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Graziosi G, Lupini C, Gobbo F, Zecchin B, Quaglia G, Pedrazzoli S, Lizzi G, Dosa G, Martini G, Terregino C, Catelli E. Genetic Diversity of Avian Influenza Viruses Detected in Waterbirds in Northeast Italy Using Two Different Sampling Strategies. Animals (Basel) 2024; 14:1018. [PMID: 38612257 PMCID: PMC11010841 DOI: 10.3390/ani14071018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 03/11/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
Avian influenza viruses (AIVs), which circulate endemically in wild aquatic birds, pose a significant threat to poultry and raise concerns for their zoonotic potential. From August 2021 to April 2022, a multi-site cross-sectional study involving active AIV epidemiological monitoring was conducted in wetlands of the Emilia-Romagna region, northern Italy, adjacent to densely populated poultry areas. A total of 129 cloacal swab samples (CSs) and 407 avian faecal droppings samples (FDs) were collected, with 7 CSs (5.4%) and 4 FDs (1%) testing positive for the AIV matrix gene through rRT-PCR. A COI-barcoding protocol was applied to recognize the species of origin of AIV-positive FDs. Multiple low-pathogenic AIV subtypes were identified, and five of these were isolated, including an H5N3, an H1N1, and three H9N2 in wild ducks. Following whole-genome sequencing, phylogenetic analyses of the hereby obtained strains showed close genetic relationships with AIVs detected in countries along the Black Sea/Mediterranean migratory flyway. Notably, none of the analyzed gene segments were genetically related to HPAI H5N1 viruses of clade 2.3.4.4b isolated from Italian poultry during the concurrent 2021-2022 epidemic. Overall, the detected AIV genetic diversity emphasizes the necessity for ongoing monitoring in wild hosts using diverse sampling strategies and whole-genome sequencing.
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Affiliation(s)
- Giulia Graziosi
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Ozzano dell’Emilia, BO, Italy; (C.L.); (G.Q.); (S.P.); (G.L.); (E.C.)
| | - Caterina Lupini
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Ozzano dell’Emilia, BO, Italy; (C.L.); (G.Q.); (S.P.); (G.L.); (E.C.)
| | - Federica Gobbo
- Comparative Biomedical Sciences Division, Istituto Zooprofilattico Sperimentale delle Venezie, 35020 Legnaro, PD, Italy; (F.G.); (B.Z.); (C.T.)
| | - Bianca Zecchin
- Comparative Biomedical Sciences Division, Istituto Zooprofilattico Sperimentale delle Venezie, 35020 Legnaro, PD, Italy; (F.G.); (B.Z.); (C.T.)
| | - Giulia Quaglia
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Ozzano dell’Emilia, BO, Italy; (C.L.); (G.Q.); (S.P.); (G.L.); (E.C.)
| | - Sara Pedrazzoli
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Ozzano dell’Emilia, BO, Italy; (C.L.); (G.Q.); (S.P.); (G.L.); (E.C.)
| | - Gabriele Lizzi
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Ozzano dell’Emilia, BO, Italy; (C.L.); (G.Q.); (S.P.); (G.L.); (E.C.)
| | - Geremia Dosa
- Veterinary Services, Local Health Unit of Imola (A.U.S.L. di Imola), 40026 Imola, BO, Italy; (G.D.); (G.M.)
| | - Gabriella Martini
- Veterinary Services, Local Health Unit of Imola (A.U.S.L. di Imola), 40026 Imola, BO, Italy; (G.D.); (G.M.)
| | - Calogero Terregino
- Comparative Biomedical Sciences Division, Istituto Zooprofilattico Sperimentale delle Venezie, 35020 Legnaro, PD, Italy; (F.G.); (B.Z.); (C.T.)
| | - Elena Catelli
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Ozzano dell’Emilia, BO, Italy; (C.L.); (G.Q.); (S.P.); (G.L.); (E.C.)
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Lynn A, Elsey-Quirk T. Salt Water Exposure Exacerbates the Negative Response of Phragmites australis Haplotypes to Sea-Level Rise. Plants (Basel) 2024; 13:906. [PMID: 38592938 PMCID: PMC10974843 DOI: 10.3390/plants13060906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/15/2024] [Accepted: 03/18/2024] [Indexed: 04/11/2024]
Abstract
The response of coastal wetlands to sea-level rise (SLR) largely depends on the tolerance of individual plant species to inundation stress and, in brackish and freshwater wetlands, exposure to higher salinities. Phragmites australis is a cosmopolitan wetland reed that grows in saline to freshwater marshes. P. australis has many genetically distinct haplotypes, some of which are invasive and the focus of considerable research and management. However, the relative response of P. australis haplotypes to SLR is not well known, despite the importance of predicting future distribution changes and understanding its role in marsh response and resilience to SLR. Here, we use a marsh organ experiment to test how factors associated with sea level rise-inundation and seawater exposure-affect the porewater chemistry and growth response of three P. australis haplotypes along the northern Gulf of Mexico coast. We planted three P. australis lineages (Delta, European, and Gulf) into marsh organs at five different elevations in channels at two locations, representing a low (Mississippi River Birdsfoot delta; 0-13 ppt) and high exposure to salinity (Mermentau basin; 6-18 ppt) for two growing seasons. Haplotypes responded differently to flooding and site conditions; the Delta haplotype was more resilient to high salinity, while the Gulf type was less susceptible to flood stress in the freshwater site. Survivorship across haplotypes after two growing seasons was 42% lower at the brackish site than at the freshwater site, associated with high salinity and sulfide concentrations. Flooding greater than 19% of the time led to lower survival across both sites linked to high concentrations of acetic acid in the porewater. Increased flood duration was negatively correlated with live aboveground biomass in the high-salinity site (χ2 = 10.37, p = 0.001), while no such relationship was detected in the low-salinity site, indicating that flood tolerance is greater under freshwater conditions. These results show that the vulnerability of all haplotypes of P. australis to rising sea levels depends on exposure to saline water and that a combination of flooding and salinity may help control invasive haplotypes.
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Ancillotto L, Amori G, Capizzi D, Cignini B, Zapparoli M, Mori E. No city for wetland species: habitat associations affect mammal persistence in urban areas. Proc Biol Sci 2024; 291:20240079. [PMID: 38471547 DOI: 10.1098/rspb.2024.0079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 02/09/2024] [Indexed: 03/14/2024] Open
Abstract
The fast rate of replacement of natural areas by expanding cities is a key threat to wildlife worldwide. Many wild species occur in cities, yet little is known on the dynamics of urban wildlife assemblages due to species' extinction and colonization that may occur in response to the rapidly evolving conditions within urban areas. Namely, species' ability to spread within urban areas, besides habitat preferences, is likely to shape the fate of species once they occur in a city. Here we use a long-term dataset on mammals occurring in one of the largest and most ancient cities in Europe to assess whether and how spatial spread and association with specific habitats drive the probability of local extinction within cities. Our analysis included mammalian records dating between years 1832 and 2023, and revealed that local extinctions in urban areas are biased towards species associated with wetlands and that were naturally rare within the city. Besides highlighting the role of wetlands within urban areas for conserving wildlife, our work also highlights the importance of long-term biodiversity monitoring in highly dynamic habitats such as cities, as a key asset to better understand wildlife trends and thus foster more sustainable and biodiversity-friendly cities.
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Affiliation(s)
- Leonardo Ancillotto
- National Research Council (CNR), Institute for the Research on Terrestrial Ecosystems (IRET), via della Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
- National Biodiversity Future Center (NBFC), Palermo, Italy
| | - Giovanni Amori
- National Research Council (CNR), Institute for the Research on Terrestrial Ecosystems (IRET), via della Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
| | - Dario Capizzi
- Latium Region Directorate for Environment, Via di Campo Romano 65, 00173 Rome, Italy
| | - Bruno Cignini
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Marzio Zapparoli
- Department for Innovation in Biological, Agro-food and Forest systems (DIBAF), Università degli Studi della Tuscia, via San Camillo de Lellis snc, 01100 Viterbo, Italy
| | - Emiliano Mori
- National Research Council (CNR), Institute for the Research on Terrestrial Ecosystems (IRET), via della Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
- National Biodiversity Future Center (NBFC), Palermo, Italy
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Donnelly JP, Collins DP, Knetter JM, Gammonley JH, Boggie MA, Grisham BA, Nowak MC, Naugle DE. Flood-irrigated agriculture mediates climate-induced wetland scarcity for summering sandhill cranes in western North America. Ecol Evol 2024; 14:e10998. [PMID: 38450315 PMCID: PMC10915483 DOI: 10.1002/ece3.10998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/14/2023] [Accepted: 12/22/2023] [Indexed: 03/08/2024] Open
Abstract
Information about species distributions is lacking in many regions of the world, forcing resource managers to answer complex ecological questions with incomplete data. Information gaps are compounded by climate change, driving ecological bottlenecks that can act as new demographic constraints on fauna. Here, we construct greater sandhill crane (Antigone canadensis tabida) summering range in western North America using movement data from 120 GPS-tagged individuals to determine how landscape composition shaped their distributions. Landscape variables developed from remotely sensed data were combined with bird locations to model distribution probabilities. Additionally, land-use and ownership were summarized within summer range as a measure of general bird use. Wetland variables identified as important predictors of bird distributions were evaluated in a post hoc analysis to measure long-term (1984-2022) effects of climate-driven surface water drying. Wetlands and associated agricultural practices accounted for 1.2% of summer range but were key predictors of occurrence. Bird distributions were structured by riparian floodplains that concentrated wetlands, and flood-irrigated agriculture in otherwise arid and semi-arid landscapes. Findings highlighted the role of private lands in greater sandhill crane ecology as they accounted for 78% of predicted distributions. Wetland drying observed in portions of the range from 1984 to 2022 represented an emerging ecological bottleneck that could limit future greater sandhill crane summer range. Study outcomes provide novel insight into the significance of ecosystem services provided by flood-irrigated agriculture that supported nearly 60% of wetland resources used by birds. Findings suggest greater sandhill cranes function as a surrogate species for agroecology and climate change adaptation strategies seeking to reduce agricultural water use through improved efficiency while also maintaining distinct flood-irrigation practices supporting greater sandhill cranes and other wetland-dependent wildlife. We make our wetland and sandhill crane summering distributions available as interactive web-based mapping tools to inform conservation design.
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Affiliation(s)
- J. Patrick Donnelly
- Intermountain West Joint Venture—U.S. Fish and Wildlife Service Migratory Bird ProgramMissoulaMontanaUSA
| | - Daniel P. Collins
- W.A. Franke College of Forestry and ConservationUniversity of MontanaMissoulaMontanaUSA
| | | | | | - Matthew A. Boggie
- Intermountain West Joint Venture—U.S. Fish and Wildlife Service Migratory Bird ProgramMissoulaMontanaUSA
| | - Blake A. Grisham
- Department of Natural Resources ManagementTexas Tech UniversityLubbockTexasUSA
| | - M. Cathy Nowak
- Oregon Department of Fish and WildlifeLadd Marsh Wildlife AreaLa GrandeOregonUSA
- U.S. Fish and Wildlife ServiceSouthwest Region Migratory Bird ProgramAlbuquerqueNew MexicoUSA
| | - David E. Naugle
- W.A. Franke College of Forestry and ConservationUniversity of MontanaMissoulaMontanaUSA
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Becker FK, Boyes RS, Wittmer HU, Inman V, Marsland S. Landscape-wide pulse events predict trait-based responses among wetland birds in perennial channels of a dryland wetland. Ecol Appl 2024; 34:e2931. [PMID: 37950629 DOI: 10.1002/eap.2931] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 08/21/2023] [Accepted: 09/15/2023] [Indexed: 11/13/2023]
Abstract
Wetlands in arid or semiarid zones are vital for maintaining biodiversity but face growing threats. Flooding regime variability is a key driver of ecological dynamism in these systems, dictating primary productivity on a large spatial scale. The functional composition or diversity of wetland-dependent bird species has been found to be sensitive to fluctuations in hydrological regimes and can thus be indicative of cascading ecosystem responses associated with climate change. In this paper, we investigate whether large-scale changes in inundation and fire-a significant additional biodiversity determinant in (semi-)arid landscapes-are reliable predictors of functional group responses of wetland-dependent birds along a perennial channel of the Okavango Delta, Botswana. We fit generalized additive models (GAMs) to 6 years of bird survey data collected along ~190-km-long annual transects and use remotely sensed landscape-level inundation estimates, as well as spatiotemporal distance to fire, to predict the responsiveness of seven trait-based functional group abundances. During the surveys, a total of 89 different wetland-dependent bird species were recorded, including 76 residents, across all years, with below-surface feeding waders consistently the most abundant functional group. Including estimated spatiotemporal variability in flooding and fire, as well as their interactions, improved model fit for all seven functional groups, explaining between 46.8% and 68.3% of variability in functional group abundances. Covariates representing longer-term variability in inundation generally performed better than shorter-term ones. For example, variability in inundation over the 5 months preceding a survey best predicted the responses of all functional groups, which also all exhibited responsiveness to the interaction between flooding and fire. We were able to interpret the responses of individual functional groups, based on the resource exploitation assumption. Overall, our results suggest that perennial waters in dryland wetlands offer functional refugia to wetland-dependent birds and highlight the indicative power of large-scale trait-based bird monitoring. Our findings demonstrate the potential utility of such a monitoring regime for dryland wetland ecosystems vulnerable to industrial-scale anthropogenic pressure and associated climate change.
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Affiliation(s)
- Frowin K Becker
- School of Biological Sciences, Victoria University of Wellington/Te Herenga Waka, Wellington, New Zealand
- National Geographic Okavango Wilderness Project, Maun, Botswana
| | | | - Heiko U Wittmer
- School of Biological Sciences, Victoria University of Wellington/Te Herenga Waka, Wellington, New Zealand
| | - Victoria Inman
- Centre for Ecosystem Science, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Stephen Marsland
- School of Mathematics and Statistics, Victoria University of Wellington/Te Herenga Waka, Wellington, New Zealand
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Londe DW, Davis CA, Loss SR, Robertson EP, Haukos DA, Hovick TJ. Climate change causes declines and greater extremes in wetland inundation in a region important for wetland birds. Ecol Appl 2024; 34:e2930. [PMID: 37941497 DOI: 10.1002/eap.2930] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 06/27/2023] [Accepted: 09/15/2023] [Indexed: 11/10/2023]
Abstract
Wetland ecosystems are vital for maintaining global biodiversity, as they provide important stopover sites for many species of migrating wetland-associated birds. However, because weather determines their hydrologic cycles, wetlands are highly vulnerable to effects of climate change. Although changes in temperature and precipitation resulting from climate change are expected to reduce inundation of wetlands, few efforts have been made to quantify how these changes will influence the availability of stopover sites for migratory wetland birds. Additionally, few studies have evaluated how climate change will influence interannual variability or the frequency of extremes in wetland availability. For spring and fall bird migration in seven ecoregions in the south-central Great Plains of North America, we developed predictive models associating abundance of inundated wetlands with a suite of weather and land cover variables. We then used these models to generate predictions of wetland inundation at the end of the century (2069-2099) under future climate change scenarios. Climate models predicted the average number of inundated wetlands will likely decline during both spring and fall migration periods, with declines being greatest in the eastern ecoregions of the southern Great Plains. However, the magnitude of predicted declines varied considerably across climate models and ecoregions, with uncertainty among climate models being greatest in the High Plains ecoregion. Most ecoregions also were predicted to experience more-frequent extremely dry years (i.e., years with extremely low wetland abundances), but the projected change in interannual variability of wetland inundation was relatively small and varied across ecoregions and seasons. Because the south-central Great Plains represents an important link along the migratory routes of many wetland-dependent avian species, future declines in wetland inundation and more frequent periods of only a few wetlands being inundated will result in an uncertain future for migratory birds as they experience reduced availability of wetland stopover habitat across their migration pathways.
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Affiliation(s)
- David W Londe
- Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Craig A Davis
- Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Scott R Loss
- Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Ellen P Robertson
- Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, Oklahoma, USA
| | - David A Haukos
- U.S. Geological Survey, Kansas Cooperative Fish and Wildlife Research Unit, Kansas State University, Manhattan, Kansas, USA
| | - Torre J Hovick
- School of Natural Resource Sciences, North Dakota State University, Fargo, North Dakota, USA
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Kouris AD, Christopoulos A, Vlachopoulos K, Christopoulou A, Dimitrakopoulos PG, Zevgolis YG. Spatiotemporal Patterns of Reptile and Amphibian Road Fatalities in a Natura 2000 Area: A 12-Year Monitoring of the Lake Karla Mediterranean Wetland. Animals (Basel) 2024; 14:708. [PMID: 38473093 DOI: 10.3390/ani14050708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 02/19/2024] [Accepted: 02/22/2024] [Indexed: 03/14/2024] Open
Abstract
The pervasive expansion of human-engineered infrastructure, particularly roads, has fundamentally reshaped landscapes, profoundly affecting wildlife interactions. Wildlife-vehicle collisions, a common consequence of this intricate interplay, frequently result in fatalities, extending their detrimental impact within Protected Areas (PAs). Among the faunal groups most susceptible to road mortality, reptiles and amphibians stand at the forefront, highlighting the urgent need for global comprehensive mitigation strategies. In Greece, where road infrastructure expansion has encroached upon a significant portion of the nation's PAs, the plight of these road-vulnerable species demands immediate attention. To address this critical issue, we present a multifaceted and holistic approach to investigating and assessing the complex phenomenon of herpetofauna road mortality within the unique ecological context of the Lake Karla plain, a rehabilitated wetland complex within a PA. To unravel the intricacies of herpetofauna road mortality in the Lake Karla plain, we conducted a comprehensive 12-year investigation from 2008 to 2019. Employing a combination of statistical modeling and spatial analysis techniques, we aimed to identify the species most susceptible to these encounters, their temporal and seasonal variations, and the ecological determinants of their roadkill patterns. We documented a total of 340 roadkill incidents involving 14 herpetofauna species in the Lake Karla's plain, with reptiles, particularly snakes, being more susceptible, accounting for over 60% of roadkill occurrences. Moreover, we found that environmental and road-related factors play a crucial role in influencing roadkill incidents, while spatial analysis techniques, including Kernel Density Estimation, the Getis-Ord Gi*, and the Kernel Density Estimation plus methods revealed critical areas, particularly in the south-eastern region of Lake Karla's plain, offering guidance for targeted interventions to address both individual and collective risks associated with roadkill incidents.
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Affiliation(s)
- Alexandros D Kouris
- Biodiversity Conservation Laboratory, Department of Environment, University of the Aegean, 81132 Mytilene, Greece
| | - Apostolos Christopoulos
- Department of Zoology and Marine Biology, Faculty of Biology, National and Kapodistrian University of Athens, 15772 Athens, Greece
| | - Konstantinos Vlachopoulos
- Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, 38446 Volos, Greece
| | | | - Panayiotis G Dimitrakopoulos
- Biodiversity Conservation Laboratory, Department of Environment, University of the Aegean, 81132 Mytilene, Greece
| | - Yiannis G Zevgolis
- Biodiversity Conservation Laboratory, Department of Environment, University of the Aegean, 81132 Mytilene, Greece
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McLoon AL, Ackaah Asante P, Anderson T, Cahill K, Cochrane D, Cohen K, German J, Hrubes CM, LaCroix I, McNamee K, Mossakowski A, Nichter AM, Pepe JL, Schofield AT. Five draft genome assemblies from Bacillaceae isolated from a degraded wetland environment. Microbiol Resour Announc 2024; 13:e0084523. [PMID: 38132715 PMCID: PMC10868232 DOI: 10.1128/mra.00845-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 11/28/2023] [Indexed: 12/23/2023] Open
Abstract
We isolated five Bacillaceae from a degraded wetland environment and sequenced their genomes using Illumina NextSeq. Here, we report draft genome sequences of Bacillus velezensus-SC119, Priestia megaterium strain SC120, Bacillus zhangzhouensis strain SC123, Bacillus pumilis strain SC124, and Bacillus idriensis strain SC127. The genomes range between 3,657,353 and 5,772,725 bp with % GC between 37.62% and 46.38%.
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Affiliation(s)
- Anna L. McLoon
- Department of Biology, Siena College, Loudonville, New York, USA
| | | | - Thomas Anderson
- Department of Biology, Siena College, Loudonville, New York, USA
| | - Kellyanne Cahill
- Department of Biology, Siena College, Loudonville, New York, USA
| | - Delana Cochrane
- Department of Biology, Siena College, Loudonville, New York, USA
| | - Keira Cohen
- Department of Biology, Siena College, Loudonville, New York, USA
| | - Jaylene German
- Department of Biology, Siena College, Loudonville, New York, USA
| | | | - Isabella LaCroix
- Department of Biology, Siena College, Loudonville, New York, USA
| | - Killian McNamee
- Department of Biology, Siena College, Loudonville, New York, USA
| | - Anna Mossakowski
- Department of Biology, Siena College, Loudonville, New York, USA
| | - Aidan M. Nichter
- Department of Biology, Siena College, Loudonville, New York, USA
| | - Jessica L. Pepe
- Department of Biology, Siena College, Loudonville, New York, USA
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Sanders E, Wassens S, Michael DR, Nimmo DG, Turner JM. Extinction risk of the world's freshwater mammals. Conserv Biol 2024; 38:e14168. [PMID: 37563953 DOI: 10.1111/cobi.14168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 07/27/2023] [Accepted: 08/03/2023] [Indexed: 08/12/2023]
Abstract
The continued loss of freshwater habitats poses a significant threat to global biodiversity. We reviewed the extinction risk of 166 freshwater aquatic and semiaquatic mammals-a group rarely documented as a collective. We used the International Union for the Conservation of Nature Red List of Threatened Species categories as of December 2021 to determine extinction risk. Extinction risk was then compared among taxonomic groups, geographic areas, and biological traits. Thirty percent of all freshwater mammals were listed as threatened. Decreasing population trends were common (44.0%), including a greater rate of decline (3.6% in 20 years) than for mammals or freshwater species as a whole. Aquatic freshwater mammals were at a greater risk of extinction than semiaquatic freshwater mammals (95% CI -7.20 to -1.11). Twenty-nine species were data deficient or not evaluated. Large species (95% CI 0.01 to 0.03) with large dispersal distances (95% CI 0.03 to 0.15) had a higher risk of extinction than small species with small dispersal distances. The number of threatening processes associated with a species compounded their risk of extinction (95% CI 0.28 to 0.77). Hunting, land clearing for logging and agriculture, pollution, residential development, and habitat modification or destruction from dams and water management posed the greatest threats to these species. The basic life-history traits of many species were poorly known, highlighting the need for more research. Conservation of freshwater mammals requires a host of management actions centered around increased protection of riparian areas and more conscientious water management to aid the recovery of threatened species.
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Affiliation(s)
- Emmalie Sanders
- School of Agricultural, Environmental and Veterinary Sciences, Charles Sturt University, Albury, New South Wales, Australia
| | - Skye Wassens
- School of Agricultural, Environmental and Veterinary Sciences, Charles Sturt University, Albury, New South Wales, Australia
- Gulbali Institute for Agriculture, Water and Environment, Charles Sturt University, Albury, New South Wales, Australia
| | - Damian R Michael
- Gulbali Institute for Agriculture, Water and Environment, Charles Sturt University, Albury, New South Wales, Australia
| | - Dale G Nimmo
- School of Agricultural, Environmental and Veterinary Sciences, Charles Sturt University, Albury, New South Wales, Australia
- Gulbali Institute for Agriculture, Water and Environment, Charles Sturt University, Albury, New South Wales, Australia
| | - James M Turner
- Institute of Biomedical and Environmental Health Research, School of Health and Life Sciences, University of the West of Scotland, South Lanarkshire, UK
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Hartman WH, Bueno de Mesquita CP, Theroux SM, Morgan-Lang C, Baldocchi DD, Tringe SG. Multiple microbial guilds mediate soil methane cycling along a wetland salinity gradient. mSystems 2024; 9:e0093623. [PMID: 38170982 PMCID: PMC10804969 DOI: 10.1128/msystems.00936-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 11/29/2023] [Indexed: 01/05/2024] Open
Abstract
Estuarine wetlands harbor considerable carbon stocks, but rising sea levels could affect their ability to sequester soil carbon as well as their potential to emit methane (CH4). While sulfate loading from seawater intrusion may reduce CH4 production due to the higher energy yield of microbial sulfate reduction, existing studies suggest other factors are likely at play. Our study of 11 wetland complexes spanning a natural salinity and productivity gradient across the San Francisco Bay and Delta found that while CH4 fluxes generally declined with salinity, they were highest in oligohaline wetlands (ca. 3-ppt salinity). Methanogens and methanogenesis genes were weakly correlated with CH4 fluxes but alone did not explain the highest rates observed. Taxonomic and functional gene data suggested that other microbial guilds that influence carbon and nitrogen cycling need to be accounted for to better predict CH4 fluxes at landscape scales. Higher methane production occurring near the freshwater boundary with slight salinization (and sulfate incursion) might result from increased sulfate-reducing fermenter and syntrophic populations, which can produce substrates used by methanogens. Moreover, higher salinities can solubilize ionically bound ammonium abundant in the lower salinity wetland soils examined here, which could inhibit methanotrophs and potentially contribute to greater CH4 fluxes observed in oligohaline sediments.IMPORTANCELow-level salinity intrusion could increase CH4 flux in tidal freshwater wetlands, while higher levels of salinization might instead decrease CH4 fluxes. High CH4 emissions in oligohaline sites are concerning because seawater intrusion will cause tidal freshwater wetlands to become oligohaline. Methanogenesis genes alone did not account for landscape patterns of CH4 fluxes, suggesting mechanisms altering methanogenesis, methanotrophy, nitrogen cycling, and ammonium release, and increasing decomposition and syntrophic bacterial populations could contribute to increases in net CH4 flux at oligohaline salinities. Improved understanding of these influences on net CH4 emissions could improve restoration efforts and accounting of carbon sequestration in estuarine wetlands. More pristine reference sites may have older and more abundant organic matter with higher carbon:nitrogen compared to wetlands impacted by agricultural activity and may present different interactions between salinity and CH4. This distinction might be critical for modeling efforts to scale up biogeochemical process interactions in estuarine wetlands.
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Affiliation(s)
| | | | | | - Connor Morgan-Lang
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Dennis D. Baldocchi
- Department of Environmental Science, Policy, and Management, University of California, Berkeley, California, USA
| | - Susannah G. Tringe
- DOE Joint Genome Institute, Berkeley, California, USA
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
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11
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Paganelli D, Bellati A, Gazzola A, Bracco F, Pellitteri-Rosa D. Impacts, Potential Benefits and Eradication Feasibility of Aquatic Alien Species in an Integral Natural State Reserve. Biology (Basel) 2024; 13:64. [PMID: 38275740 PMCID: PMC10813597 DOI: 10.3390/biology13010064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/15/2024] [Accepted: 01/19/2024] [Indexed: 01/27/2024]
Abstract
Riverine wetlands are stepping-stone environments for the protection of local biodiversity, but they are particularly vulnerable to biological invasions. In order to take action against biological invasions, it is crucial to assess the impacts of alien species. However, it is also important to assess the potential benefits on ecosystem services that alien species could have. Once it has been verified that negative impacts are higher than potential benefits, it is important to propose feasible actions to contrast them. In this study, we assessed eight freshwater alien species recorded in an integral protected wetland using the Invasive Species Effects Assessment Tool (INSEAT) to quantify their negative impacts and potential benefits on ecosystem services. Moreover, for each species, we evaluated the feasibility of the main eradication techniques currently proposed in the literature using the Non-Native Risk Management scheme (NNRM), with the final aim of suggesting effective actions for their management. The INSEAT results indicated that all the assessed species had more impacts than benefits while NNRM provided useful indications on the best practical conservation actions to use for reducing the density, and therefore, the negative impacts on ecosystem services and the local biodiversity of the assessed alien species.
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Affiliation(s)
- Daniele Paganelli
- Department of Earth and Environmental Science, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy; (D.P.); (A.G.); (F.B.)
| | - Adriana Bellati
- Department of Ecological and Biological Sciences, University of Tuscia, Largo dell’Università snc, 01100 Viterbo, Italy;
| | - Andrea Gazzola
- Department of Earth and Environmental Science, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy; (D.P.); (A.G.); (F.B.)
| | - Francesco Bracco
- Department of Earth and Environmental Science, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy; (D.P.); (A.G.); (F.B.)
| | - Daniele Pellitteri-Rosa
- Department of Earth and Environmental Science, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy; (D.P.); (A.G.); (F.B.)
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12
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Bueno de Mesquita CP, Hartman WH, Ardón M, Tringe SG. Disentangling the effects of sulfate and other seawater ions on microbial communities and greenhouse gas emissions in a coastal forested wetland. ISME Commun 2024; 4:ycae040. [PMID: 38628812 PMCID: PMC11020224 DOI: 10.1093/ismeco/ycae040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 03/19/2024] [Accepted: 03/20/2024] [Indexed: 04/19/2024]
Abstract
Seawater intrusion into freshwater wetlands causes changes in microbial communities and biogeochemistry, but the exact mechanisms driving these changes remain unclear. Here we use a manipulative laboratory microcosm experiment, combined with DNA sequencing and biogeochemical measurements, to tease apart the effects of sulfate from other seawater ions. We examined changes in microbial taxonomy and function as well as emissions of carbon dioxide, methane, and nitrous oxide in response to changes in ion concentrations. Greenhouse gas emissions and microbial richness and composition were altered by artificial seawater regardless of whether sulfate was present, whereas sulfate alone did not alter emissions or communities. Surprisingly, addition of sulfate alone did not lead to increases in the abundance of sulfate reducing bacteria or sulfur cycling genes. Similarly, genes involved in carbon, nitrogen, and phosphorus cycling responded more strongly to artificial seawater than to sulfate. These results suggest that other ions present in seawater, not sulfate, drive ecological and biogeochemical responses to seawater intrusion and may be drivers of increased methane emissions in soils that received artificial seawater addition. A better understanding of how the different components of salt water alter microbial community composition and function is necessary to forecast the consequences of coastal wetland salinization.
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Affiliation(s)
- Clifton P Bueno de Mesquita
- Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States
| | - Wyatt H Hartman
- Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States
| | - Marcelo Ardón
- Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27695, United States
| | - Susannah G Tringe
- Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States
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13
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Feron S, Malhotra A, Bansal S, Fluet-Chouinard E, McNicol G, Knox SH, Delwiche KB, Cordero RR, Ouyang Z, Zhang Z, Poulter B, Jackson RB. Recent increases in annual, seasonal, and extreme methane fluxes driven by changes in climate and vegetation in boreal and temperate wetland ecosystems. Glob Chang Biol 2024; 30:e17131. [PMID: 38273508 DOI: 10.1111/gcb.17131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 11/15/2023] [Accepted: 12/15/2023] [Indexed: 01/27/2024]
Abstract
Climate warming is expected to increase global methane (CH4 ) emissions from wetland ecosystems. Although in situ eddy covariance (EC) measurements at ecosystem scales can potentially detect CH4 flux changes, most EC systems have only a few years of data collected, so temporal trends in CH4 remain uncertain. Here, we use established drivers to hindcast changes in CH4 fluxes (FCH4 ) since the early 1980s. We trained a machine learning (ML) model on CH4 flux measurements from 22 [methane-producing sites] in wetland, upland, and lake sites of the FLUXNET-CH4 database with at least two full years of measurements across temperate and boreal biomes. The gradient boosting decision tree ML model then hindcasted daily FCH4 over 1981-2018 using meteorological reanalysis data. We found that, mainly driven by rising temperature, half of the sites (n = 11) showed significant increases in annual, seasonal, and extreme FCH4 , with increases in FCH4 of ca. 10% or higher found in the fall from 1981-1989 to 2010-2018. The annual trends were driven by increases during summer and fall, particularly at high-CH4 -emitting fen sites dominated by aerenchymatous plants. We also found that the distribution of days of extremely high FCH4 (defined according to the 95th percentile of the daily FCH4 values over a reference period) have become more frequent during the last four decades and currently account for 10-40% of the total seasonal fluxes. The share of extreme FCH4 days in the total seasonal fluxes was greatest in winter for boreal/taiga sites and in spring for temperate sites, which highlights the increasing importance of the non-growing seasons in annual budgets. Our results shed light on the effects of climate warming on wetlands, which appears to be extending the CH4 emission seasons and boosting extreme emissions.
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Affiliation(s)
- Sarah Feron
- Knowledge Infrastructures, Campus Fryslân, University of Groningen, Groningen, The Netherlands
- Department of Earth System Science, Stanford University, Stanford, California, USA
- Department of Physics, Universidad de Santiago, Santiago, Chile
| | - Avni Malhotra
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington, USA
| | - Sheel Bansal
- U.S. Geological Survey, Northern Prairie Wildlife Research Center, Jamestown, North Dakota, USA
| | - Etienne Fluet-Chouinard
- Earth Systems Science Division, Pacific Northwest National Laboratory, Richland, Washington, USA
| | - Gavin McNicol
- Department of Earth System Science, Stanford University, Stanford, California, USA
- Department of Earth and Environmental Sciences, University of Illinois Chicago, Chicago, Illinois, USA
| | - Sara H Knox
- Department of Geography, The University of British Columbia, Vancouver, British Columbia, Canada
- Department of Geography, McGill University, Montreal, Quebec, Canada
| | - Kyle B Delwiche
- Department of Earth System Science, Stanford University, Stanford, California, USA
- Department of Environmental Science, Policy, and Management, University of California, Berkeley, California, USA
| | - Raul R Cordero
- Department of Physics, Universidad de Santiago, Santiago, Chile
| | - Zutao Ouyang
- Department of Earth System Science, Stanford University, Stanford, California, USA
| | - Zhen Zhang
- Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China
| | - Benjamin Poulter
- Biospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA
| | - Robert B Jackson
- Department of Earth System Science, Stanford University, Stanford, California, USA
- Woods Institute for the Environment, Stanford University, Stanford, California, USA
- Precourt Institute for Energy, Stanford, California, USA
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14
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Hoppenreijs JHT, Marker J, Maliao RJ, Hansen HH, Juhász E, Lõhmus A, Altanov VY, Horká P, Larsen A, Malm-Renöfält B, Runnel K, Piccolo JJ, Magurran AE. Three major steps toward the conservation of freshwater and riparian biodiversity. Conserv Biol 2023:e14226. [PMID: 38111958 DOI: 10.1111/cobi.14226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 11/24/2023] [Accepted: 11/28/2023] [Indexed: 12/20/2023]
Abstract
Freshwater ecosystems and their bordering wetlands and riparian zones are vital for human society and biological diversity. Yet, they are among the most degraded ecosystems, where sharp declines in biodiversity are driven by human activities, such as hydropower development, agriculture, forestry, and fisheries. Because freshwater ecosystems are characterized by strongly reciprocal linkages with surrounding landscapes, human activities that encroach on or degrade riparian zones ultimately lead to declines in freshwater-riparian ecosystem functioning. We synthesized results of a symposium on freshwater, riparian, and wetland processes and interactions and analyzed some of the major problems associated with improving freshwater and riparian research and management. Three distinct barriers are the lack of involvement of local people in conservation research and management, absence of adequate measurement of biodiversity in freshwater and riparian ecosystems, and separate legislation and policy on riparian and freshwater management. Based on our findings, we argue that freshwater and riparian research and conservation efforts should be integrated more explicitly. Best practices for overcoming the 3 major barriers to improved conservation include more and sustainable use of traditional and other forms of local ecological knowledge, choosing appropriate metrics for ecological research and monitoring of restoration efforts, and mirroring the close links between riparian and freshwater ecosystems in legislation and policy. Integrating these 3 angles in conservation science and practice will provide substantial benefits in addressing the freshwater biodiversity crisis.
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Affiliation(s)
| | - Jeffery Marker
- Department of Environmental and Life Sciences, Karlstad University, Karlstad, Sweden
| | - Ronald J Maliao
- Pál Juhász-Nagy Doctoral School of Biology and Environmental Sciences, University of Debrecen, Debrecen, Hungary
- Community Resiliency and Environmental Education Development (CREED) Foundation, Iloilo, Philippines
| | - Henry H Hansen
- Department of Environmental and Life Sciences, Karlstad University, Karlstad, Sweden
| | - Erika Juhász
- Institute of Ecology and Botany, Centre for Ecological Research, Vácrátót, Hungary
- National Laboratory for Health Security', Centre for Ecological Research, Vácrátót, Hungary
| | - Asko Lõhmus
- Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia
| | - Vassil Y Altanov
- Department of Community and Ecosystem Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany
| | - Petra Horká
- Institute for Environmental Studies, Faculty of Science, Charles University, Prague, Czech Republic
| | - Annegret Larsen
- Department of Soil Geography and Landscape, Wageningen University & Research, Wageningen, The Netherlands
| | | | - Kadri Runnel
- Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia
| | - John J Piccolo
- Department of Environmental and Life Sciences, Karlstad University, Karlstad, Sweden
| | - Anne E Magurran
- Centre for Biological Diversity, School of Biology, University of St Andrews, St Andrews, UK
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15
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Hubbard LE, Givens CE, Stelzer EA, Killian ML, Kolpin DW, Szablewski CM, Poulson RL. Environmental Surveillance and Detection of Infectious Highly Pathogenic Avian Influenza Virus in Iowa Wetlands. Environ Sci Technol Lett 2023; 10:1181-1187. [PMID: 38106530 PMCID: PMC10720465 DOI: 10.1021/acs.estlett.3c00668] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/18/2023] [Accepted: 10/19/2023] [Indexed: 12/19/2023]
Abstract
Avian influenza viruses (AIVs) infect both wild birds and domestic poultry, resulting in economically costly outbreaks that have the potential to impact public health. Currently, a knowledge gap exists regarding the detection of infectious AIVs in the aquatic environment. In response to the 2021-2022 Eurasian strain highly pathogenic avian influenza (HPAI) A/goose/Guangdong/1/1996 clade 2.3.4.4 lineage H5 outbreak, an AIV environmental outbreak response study was conducted using a One Health approach. An optimized method was used to temporally sample (April and May 2022) and analyze (culture and molecular methods) surface water from five water bodies (four wetlands and one lake used as a comparison location) in areas near confirmed HPAI detections in wild bird or poultry operations. Avian influenza viruses were isolated from water samples collected in April from all four wetlands (not from the comparison lake sample); HPAI H5N1 was isolated from one wetland. No virus was isolated from the May samples. Several factors, including increased water temperatures, precipitation, biotic and abiotic factors, and absence of AIV-contaminated fecal material due to fewer waterfowl present, may have contributed to the lack of virus isolation from May samples. Results demonstrate surface water as a plausible medium for transmission of AIVs, including the HPAI virus.
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Affiliation(s)
- Laura E. Hubbard
- U.S.
Geological Survey, Upper Midwest Water Science
Center, 1 Gifford Pinchot
Drive, Madison, Wisconsin 53726, United States
| | - Carrie E. Givens
- U.S.
Geological Survey, Upper Midwest Water Science
Center, 5840 Enterprise
Drive, Lansing, Michigan 48911 United States
| | - Erin A. Stelzer
- U.S.
Geological Survey, Ohio-Kentucky-Indiana
Water Science Center, 6460 Busch Blvd, Ste 100, Columbus, Ohio 43229 United States
| | - Mary L. Killian
- U.S.
Department of Agriculture, Animal and Plant Health Inspection Service, National Veterinary Services Laboratories, 1920 Dayton Avenue, Ames, Iowa 50010 United States
| | - Dana W. Kolpin
- U.S.
Geological Survey, Central Midwest Water
Science Center, 400 S.
Clinton Street, Rm 269, Iowa City, Iowa 52240, United States
| | - Christine M. Szablewski
- Influenza
Division, Centers for Disease Control and
Prevention, Atlanta, Georgia 30329 United States
| | - Rebecca L. Poulson
- Southeastern
Cooperative Wildlife Disease Study, Department of Population Health,
College of Veterinary Medicine, University
of Georgia, 589 D.W.
Brooks Drive, Athens, Georgia 30602, United States
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16
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Vahsen ML, Kleiner HS, Kodak H, Summers JL, Vahsen WL, Blum MJ, Megonigal JP, McLachlan JS. Complex eco-evolutionary responses of a foundational coastal marsh plant to global change. New Phytol 2023; 240:2121-2136. [PMID: 37452486 DOI: 10.1111/nph.19117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 06/06/2023] [Indexed: 07/18/2023]
Abstract
Predicting the fate of coastal marshes requires understanding how plants respond to rapid environmental change. Environmental change can elicit shifts in trait variation attributable to phenotypic plasticity and act as selective agents to shift trait means, resulting in rapid evolution. Comparably, less is known about the potential for responses to reflect the evolution of trait plasticity. Here, we assessed the relative magnitude of eco-evolutionary responses to interacting global change factors using a multifactorial experiment. We exposed replicates of 32 Schoenoplectus americanus genotypes 'resurrected' from century-long, soil-stored seed banks to ambient or elevated CO2 , varying levels of inundation, and the presence of a competing marsh grass, across two sites with different salinities. Comparisons of responses to global change factors among age cohorts and across provenances indicated that plasticity has evolved in five of the seven traits measured. Accounting for evolutionary factors (i.e. evolution and sources of heritable variation) in statistical models explained an additional 9-31% of trait variation. Our findings indicate that evolutionary factors mediate ecological responses to environmental change. The magnitude of evolutionary change in plant traits over the last century suggests that evolution could play a role in pacing future ecosystem response to environmental change.
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Affiliation(s)
- Megan L Vahsen
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Helena S Kleiner
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, 46556, USA
- Smithsonian Environmental Research Center, Edgewater, MD, 21037, USA
| | - Haley Kodak
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Jennifer L Summers
- Department of Ecology & Evolutionary Biology, University of Tennessee Knoxville, Knoxville, TN, 37996, USA
| | - Wendy L Vahsen
- Smithsonian Environmental Research Center, Edgewater, MD, 21037, USA
| | - Michael J Blum
- Department of Ecology & Evolutionary Biology, University of Tennessee Knoxville, Knoxville, TN, 37996, USA
| | | | - Jason S McLachlan
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, 46556, USA
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17
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Kottler E. Seed resurrection study unearths evolution of phenotypic plasticity. New Phytol 2023; 240:1714-1716. [PMID: 37697636 DOI: 10.1111/nph.19240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
This article is a Commentary on Vahsen et al. (2023b), 240: 2121–2136.
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Affiliation(s)
- Ezra Kottler
- University of Colorado Boulder, 1900 Pleasant Street, 334 UCB, Rm N122 Ramaley Bldg, Boulder, CO, 80309, USA
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18
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Musungu PC, Kengara FO, Ongeri DMK, Abdullah MMS, Ravindran B. Influence of agricultural activities and seasonality on levels of selected physico-chemical parameters and heavy metals along River Yala in Lake Victoria Basin. Environ Monit Assess 2023; 195:1467. [PMID: 37962670 DOI: 10.1007/s10661-023-11991-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 10/12/2023] [Indexed: 11/15/2023]
Abstract
The aim of the work was to establish the effect of anthropogenic activities and seasonality on physico-chemical parameters and heavy metal levels of River Yala (RY) within RY Basin of Lake Victoria (LV), as well as the associated ecological risks. Analyses were done on the collected samples in order to establish the levels of EC, pH, DO, temperature, conductivity, turbidity, acidity, alkalinity, BOD, COD, DOC, TOC and heavy metals (Cu, Fe, Pb, Mn, Zn, Cr and Cd) in RY water and sediments adjacent to Agricultural Farms during dry and wet seasons. The levels in terms of μg/mL, μS/cm (EC), NTU (turbidity) of analyzed parameters in the Agricultural Farms in water ranged from 0.01±0.00 to 121.75±15.23 (Upstream pristine sources of RY - S), 0.02±0.01 to 184.83±23.43 (Nandi Tea Estate and Kaimosi Agricultural Farms - N), 0.02±0.01 to 149.67±22.77 (Subsistence Farms - Sub), 0.02±0.01 to 209.33±18.09 (Lake Agro Limited Agricutural Farms and Yala Swamp - D) and 0.01±0.00 to 164.25±30.33 (Terminal of RY - T). The levels in μg/g of analyzed parameters in sediments ranged from 7.2±1.46 to 3342.8±538.7 (S), 9.12±0.2 to 4063.2±90.4 (N), 3.15±1.14 to 5998.5±588.4 (Sub), 2.03±0.76 to 4519.8±194.9 (D) and 2.13±0.75 to 5514.4±201.4 (T). The significant differences in the levels of analyzed parameters in water between dry and wet seasons were computed as; EC (+20.54 μS/cm), alkalinity (-2.85 μg/mL), DOC (+0.24 μg/mL), Fe (+0.58 μg/mL), Pb (+0.11 μg/mL), Zn (+0.07 μg/mL) and Cd (+0.01 μg/mL) while that for Mn in sediment samples was +163.8937 μg/g. The significantly (p ≤ 0.05) positive values indicated that wet season had more impact on the levels than dry season. There was positive correlation of zinc in water and sediments during dry and wet season. Chromium correlated positively in water and sediments during wet season. Copper and cadmium correlated negatively during dry and wet season while Mn only wet season. Results of geostatistical indices (CF, Cd, mCd, PLI, Er and RI) indicated that sediments located at regions N, D and T were highly contaminated with the heavy metals. However, a wetland at the mouth of Lake Victoria cleaned the water before it drained into the lake. Therefore, despite contamination of RY through anthropogenic activities, wetland mitigation protects LV from pollution by the river, indicating the important ecological and restorative functions played by wetlands.
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Affiliation(s)
| | - Fredrick Orori Kengara
- School of Pure and Applied Sciences, Bomet University College, P.O. Box 701-20400, Bomet, Kenya.
| | - David M K Ongeri
- Department of Chemistry, Maseno University, P.O. Box 333, Maseno, 40105, Kenya
| | - Mahmood M S Abdullah
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Balasubramani Ravindran
- Department of Environmental Energy and Engineering, Kyonggi University Yeongtong-Gu, Suwon, Gyeonggi-Do, 16227, South Korea
- Department of Medical Biotechnology and Integrative Physiology, Institute of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Thandalam, Chennai, Tamil Nadu, 602105, India
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19
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Xing Z, Li X, Mao D, Luo L, Wang Z. Heterogeneous responses of wetland vegetation to climate change in the Amur River basin characterized by normalized difference vegetation index from 1982 to 2020. Front Plant Sci 2023; 14:1290843. [PMID: 38023903 PMCID: PMC10646443 DOI: 10.3389/fpls.2023.1290843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 10/12/2023] [Indexed: 12/01/2023]
Abstract
Climate change affects wetland vegetation dramatically in mid- and high- latitudes, especially in the Amur River basin (ARB), straddling three countries and distributing abundance wetlands. In this study, spatiotemporal changes in average normalized difference vegetation index (NDVI) of wetland during the annual growing season were examined in the ARB from 1982 to 2020, and the responses of wetland vegetation to climatic change (temperature and precipitation) in different countries, geographic gradients, and time periods were analyzed by correlation analysis. The NDVI of wetland in the ARB increased significantly (p < 0.01) at the rate of 0.023 per decade from 1982 to 2020, and the NDVI on the Russian side (0.03 per decade) increased faster than that on the Chinese side (0.02 per decade). The NDVI of wetland was significantly positively correlated with daily mean temperature (p < 0.05, r = 0.701) and negatively correlated with precipitation, although the correlation was not significant (p > 0.05, r = -0.12). However, the asymmetric effects of diurnal warming on wetland vegetation were weak in the ARB. Correlations between the NDVI of wetland and climatic factors were zonal in latitudinal and longitudinal directions, and 49°N and 130°E were the points for a shift between increasing and decreasing correlation coefficients, closely related to the climatic zone. Under climate warming scenarios, the NDVI of wetland is predicted to continue to increase until 2080. The findings of this study are expected to deepen the understanding on response of wetland ecosystem to global change and promote regional wetland ecological protection.
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Affiliation(s)
- Zihan Xing
- College of Earth Sciences, Jilin University, Changchun, China
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
| | - Xiaoyan Li
- College of Earth Sciences, Jilin University, Changchun, China
| | - Dehua Mao
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
| | - Ling Luo
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
| | - Zongming Wang
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
- National Earth System Science Data Center, Beijing, China
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20
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Buczyńska E, Tarkowski A, Sugier P, Płaska W, Zawal A, Janicka A, Buczyński P. Caddisflies (Trichoptera) of Protected Calcareous Fen Habitats: Assemblages, Environmental Drivers, Indicator Species, and Conservation Issues. Insects 2023; 14:850. [PMID: 37999048 PMCID: PMC10671576 DOI: 10.3390/insects14110850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 10/27/2023] [Accepted: 10/29/2023] [Indexed: 11/25/2023]
Abstract
The caddisflies (Trichoptera) of calcareous fen habitats, in contrast to those of other peatland types, have been poorly researched. We thus conducted a two-year study in south-eastern Poland encompassing four types of such habitats-drained and undrained fens and water bodies (pools and ditches) located within the fens-in order to define trichopteran reference assemblages (PCoA), indicator species (IndVal analysis), and the drivers (both natural and those associated with landscape management, including area protection) responsible for caddisfly species distribution (CCA). The most important environmental driver was habitat persistence. Distance-based RDA analysis revealed a distinct pattern in the distribution of species with or without diapause along the persistence gradient. Environmental drivers associated with plants were also crucial for both fens and water bodies. The key factor influencing the caddisfly assemblages of pools and ditches was the use and management of the surrounding land, whereas in the fens, it was the level of area protection. Physical and chemical water parameters had no statistically significant impact on the assemblages. Some factors can be modified by humans (e.g., water level regulation, vegetation, and landscape management) to maintain healthy ecosystems for aquatic insects.
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Affiliation(s)
- Edyta Buczyńska
- Department of Zoology and Animal Ecology, University of Life Sciences in Lublin, Akademicka 13, 20-033 Lublin, Poland;
| | - Adam Tarkowski
- The University Centre for Environmental Studies and Sustainable Development, University of Warsaw, Żwirki i Wigury 93, 02-089 Warsaw, Poland;
| | - Piotr Sugier
- Department of Botany, Mycology and Ecology, Institute of Biological Sciences, Maria Curie-Sklodowska University, Akademicka 19, 20-033 Lublin, Poland;
| | - Wojciech Płaska
- Department of Hydrobiology and Protection of Ecosystems, University of Life Sciences, Dobrzańskiego 37, 20-262 Lublin, Poland;
| | - Andrzej Zawal
- Centre of Molecular Biology and Biotechnology, Institute of Marine and Environmental Sciences, University of Szczecin, Wąska 13, 71-415 Szczecin, Poland;
| | - Anna Janicka
- Department of Zoology and Nature Protection, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland;
| | - Paweł Buczyński
- Department of Zoology and Nature Protection, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland;
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21
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Mengistu SG, Golden HE, Lane CR, Christensen JC, Wine ML, D’Amico E, Prues A, Leibowitz SG, Compton JE, Weber MH, Hill RA. Wetland Flowpaths Mediate Nitrogen and Phosphorus Concentrations across the Upper Mississippi River Basin. J Am Water Resour Assoc 2023; 59:1162-1179. [PMID: 38152418 PMCID: PMC10750867 DOI: 10.1111/1752-1688.12885] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 09/21/2020] [Indexed: 12/29/2023]
Abstract
Eutrophication, harmful algal blooms, and human health impacts are critical environmental challenges resulting from excess nitrogen and phosphorus in surface waters. Yet we have limited information regarding how wetland characteristics mediate water quality across watershed scales. We developed a large, novel set of spatial variables characterizing hydrological flowpaths from wetlands to streams, that is, "wetland hydrological transport variables," to explore how wetlands statistically explain the variability in total nitrogen (TN) and total phosphorus (TP) concentrations across the Upper Mississippi River Basin (UMRB) in the United States. We found that wetland flowpath variables improved landscape-to-aquatic nutrient multilinear regression models (from R2 = 0.89 to 0.91 for TN; R2 = 0.53 to 0.84 for TP) and provided insights into potential processes governing how wetlands influence watershed-scale TN and TP concentrations. Specifically, flowpath variables describing flow-attenuating environments, for example, subsurface transport compared to overland flowpaths, were related to lower TN and TP concentrations. Frequent hydrological connections from wetlands to streams were also linked to low TP concentrations, which likely suggests a nutrient source limitation in some areas of the UMRB. Consideration of wetland flowpaths could inform management and conservation activities designed to reduce nutrient export to downstream waters.
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Affiliation(s)
- Samson G. Mengistu
- National Research Council, National Academy of Science @ US Environmental Protection Agency (USEPA), Office of Research and Development, Cincinnati, Ohio USA
| | - Heather E. Golden
- USEPA, Office of Research and Development, National Center for Measurement and Modeling, Cincinnati, Ohio, USA
| | - Charles R. Lane
- USEPA, Office of Research and Development, National Center for Measurement and Modeling, Cincinnati, Ohio, USA
| | - Jay C. Christensen
- USEPA, Office of Research and Development, National Center for Measurement and Modeling, Cincinnati, Ohio, USA
| | - Michael L. Wine
- Oak Ridge Institute for Science and Education @ US Environmental Protection Agency (USEPA), Office of Research and Development, Cincinnati, Ohio USA
| | - Ellen D’Amico
- Pegasus Technical Services, Inc., Cincinnati, Ohio, USA
| | - Amy Prues
- Pegasus Technical Services, Inc., Cincinnati, Ohio, USA
| | - Scott G. Leibowitz
- USEPA, Office of Research and Development, National Center for Public Health and Environmental Assessment, Corvallis, Oregon, USA
| | - Jana E. Compton
- USEPA, Office of Research and Development, National Center for Public Health and Environmental Assessment, Corvallis, Oregon, USA
| | - Marc H. Weber
- USEPA, Office of Research and Development, National Center for Public Health and Environmental Assessment, Corvallis, Oregon, USA
| | - Ryan A. Hill
- USEPA, Office of Research and Development, National Center for Public Health and Environmental Assessment, Corvallis, Oregon, USA
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22
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Åhlén D, Peacock M, Brodin Y, Hambäck PA. Wetland productivity determines trade-off between biodiversity support and greenhouse gas production. Ecol Evol 2023; 13:e10619. [PMID: 37869431 PMCID: PMC10587742 DOI: 10.1002/ece3.10619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 09/13/2023] [Accepted: 10/04/2023] [Indexed: 10/24/2023] Open
Abstract
Establishing wetlands for nutrient capture and biodiversity support may introduce trade-offs between environmentally beneficial functions and detrimental greenhouse gas emissions. Investigating the interaction of nutrient capture, primary production, greenhouse gas production and biodiversity support is imperative to understanding the overall function of wetlands and determining possible beneficial synergistic effects and trade-offs. Here, we present temporally replicated data from 17 wetlands in hemi-boreal Sweden. We explored the relationship between nutrient load, primary producing algae, production of methane and nitrous oxide, and emergence rates of chironomids to determine what factors affected each and how they related to each other. Chironomid emergence rates correlated positively with methane production and negatively with nitrous oxide production, where water temperature was the main driving factor. Increasing nutrient loads reduced methanogenesis through elevated nitrogen concentrations, while simultaneously enhancing nitrous oxide production. Nutrient loads only indirectly increased chironomid emergence rates through increased chlorophyll-a concentration, via increased phosphorus concentrations, with certain taxa and food preference functional groups benefitting from increased chlorophyll-a concentrations. However, water temperature seemed to be the main driving factor for chironomid emergence rates, community composition and diversity, as well as for greenhouse gas production. These findings increase our understanding of the governing relationships between biodiversity support and greenhouse gas production, and should inform future management when constructing wetlands.
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Affiliation(s)
- David Åhlén
- Department of Ecology, Environment and Plant SciencesStockholm UniversityStockholmSweden
| | - Mike Peacock
- Department of Aquatic Sciences and AssessmentSwedish University of Agricultural SciencesUppsalaSweden
- Department of Geography and Planning, School of Environmental SciencesUniversity of LiverpoolLiverpoolUK
| | - Yngve Brodin
- Department of ZoologyThe Swedish Museum of Natural HistoryStockholmSweden
| | - Peter A. Hambäck
- Department of Ecology, Environment and Plant SciencesStockholm UniversityStockholmSweden
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23
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Candry P, Abrahamson B, Stahl DA, Winkler MKH. Microbially mediated climate feedbacks from wetland ecosystems. Glob Chang Biol 2023; 29:5169-5183. [PMID: 37386740 DOI: 10.1111/gcb.16850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 06/15/2023] [Indexed: 07/01/2023]
Abstract
Wetlands are crucial nodes in the carbon cycle, emitting approximately 20% of global CH4 while also sequestering 20%-30% of all soil carbon. Both greenhouse gas fluxes and carbon storage are driven by microbial communities in wetland soils. However, these key players are often overlooked or overly simplified in current global climate models. Here, we first integrate microbial metabolisms with biological, chemical, and physical processes occurring at scales from individual microbial cells to ecosystems. This conceptual scale-bridging framework guides the development of feedback loops describing how wetland-specific climate impacts (i.e., sea level rise in estuarine wetlands, droughts and floods in inland wetlands) will affect future climate trajectories. These feedback loops highlight knowledge gaps that need to be addressed to develop predictive models of future climates capturing microbial contributions. We propose a roadmap connecting environmental scientific disciplines to address these knowledge gaps and improve the representation of microbial processes in climate models. Together, this paves the way to understand how microbially mediated climate feedbacks from wetlands will impact future climate change.
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Affiliation(s)
- Pieter Candry
- Civil and Environmental Engineering, University of Washington, Seattle, Washington, USA
| | - Britt Abrahamson
- Civil and Environmental Engineering, University of Washington, Seattle, Washington, USA
| | - David Allan Stahl
- Civil and Environmental Engineering, University of Washington, Seattle, Washington, USA
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24
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Hamer AJ, Czeglédi I, Gál B, Sály P, Szalóky Z, Preiszner B, Erős T. Hydrology is a major influence on amphibian abundance in a large European floodplain. Freshw Biol 2023; 68:1303-1318. [PMID: 38516301 PMCID: PMC10952816 DOI: 10.1111/fwb.14104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 04/16/2023] [Accepted: 04/26/2023] [Indexed: 03/23/2024]
Abstract
River-floodplain ecosystems play a crucial role in connecting landscape patches through hydrological connectivity, but they are among the most threatened ecosystems. Floodplains provide important habitat for amphibians by connecting aquatic and terrestrial habitats. Modifications to floodplain hydrology can impact amphibian communities, yet few studies have examined amphibian metacommunities in floodplain wetlands.In this study, we assessed patterns in amphibian breeding abundance in one of the largest floodplains of the Danube River, Hungary, relative to hydrological connectivity and multi-scale variables at 30 waterbody sites. Our aim was to determine whether these patterns aligned with the pond-permanence gradient hypothesis, where breeding amphibian abundance is predicted to be highest in ephemeral ponds without large predatory fish. We used Bayesian hierarchical modelling to estimate multi-species abundance from repeated survey (count) data collected over one breeding season.We detected the eggs and larvae of four amphibian species. The best model of abundance included covariates describing two principal component axes associated with waterbody hydrology and landscape composition within a 500-m radius of a site. There was a positive relationship between mean community abundance at a site and hydrological disconnection from the main river channel; however, the common toad (Bufo bufo) was associated with hydrologically connected waterbodies. There was a positive relationship between mean community abundance and a high proportion of forest cover and low cover of agricultural land within a 500-m radius around a site, although this relationship was clear for only two species. There was no support for models containing the number of large predatory fish species detected at a site.Although our results showed that amphibian abundance declined with hydrological connectivity, based on model selection we could not ascribe this relationship to an increased number of large predatory fish species detected in waterbodies close to the main river channel. Differences in life history and habitat requirements are likely to have explained interspecific responses to hydrological connectivity. Our results underscore the importance of addressing amphibian abundance at multiple spatial scales in floodplain wetlands, as landscape composition partly explained patterns in abundance.Application of multi-species abundance modelling allowed us to investigate environmental relationships for common and infrequently detected species. Habitat restoration programmes in floodplains should provide waterbodies disconnected from main river channels as potential amphibian breeding sites and protect or restore forest as terrestrial habitat.
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Affiliation(s)
- Andrew J. Hamer
- Balaton Limnological Research InstituteEötvös Loránd Research Network (ELKH)TihanyHungary
- Institute of Aquatic Ecology, Centre for Ecological ResearchBudapestHungary
| | - István Czeglédi
- Balaton Limnological Research InstituteEötvös Loránd Research Network (ELKH)TihanyHungary
- National Laboratory for Water Science and Water SecurityBalaton Limnological Research InstituteTihanyHungary
| | - Blanka Gál
- Balaton Limnological Research InstituteEötvös Loránd Research Network (ELKH)TihanyHungary
- National Laboratory for Water Science and Water SecurityBalaton Limnological Research InstituteTihanyHungary
| | - Péter Sály
- Institute of Aquatic Ecology, Centre for Ecological ResearchBudapestHungary
- National Laboratory for Water Science and Water SecurityWater Ecological InstituteBudapestHungary
| | - Zoltán Szalóky
- Institute of Aquatic Ecology, Centre for Ecological ResearchBudapestHungary
- National Laboratory for Water Science and Water SecurityWater Ecological InstituteBudapestHungary
| | - Bálint Preiszner
- Balaton Limnological Research InstituteEötvös Loránd Research Network (ELKH)TihanyHungary
- National Laboratory for Water Science and Water SecurityBalaton Limnological Research InstituteTihanyHungary
| | - Tibor Erős
- Balaton Limnological Research InstituteEötvös Loránd Research Network (ELKH)TihanyHungary
- National Laboratory for Water Science and Water SecurityBalaton Limnological Research InstituteTihanyHungary
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25
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Kim Y, Flinkstrom Z, Candry P, Winkler MKH, Myung J. Resource availability governs polyhydroxyalkanoate (PHA) accumulation and diversity of methanotrophic enrichments from wetlands. Front Bioeng Biotechnol 2023; 11:1210392. [PMID: 37588137 PMCID: PMC10425282 DOI: 10.3389/fbioe.2023.1210392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 07/12/2023] [Indexed: 08/18/2023] Open
Abstract
Aquatic environments account for half of global CH4 emissions, with freshwater wetlands being the most significant contributors. These CH4 fluxes can be partially offset by aerobic CH4 oxidation driven by methanotrophs. Additionally, some methanotrophs can convert CH4 into polyhydroxyalkanoate (PHA), an energy storage molecule as well as a promising bioplastic polymer. In this study, we investigate how PHA-accumulating methanotrophic communities enriched from wetlands were shaped by varying resource availability (i.e., C and N concentrations) at a fixed C/N ratio. Cell yields, PHA accumulation, and community composition were evaluated in high (20% CH4 and 10 mM NH4 +) and low resource (0.2% CH4 and 0.1 mM NH4 +) conditions simulating engineered and environmental settings, respectively. High resource availability decreased C-based cell yields, while N-based cell yields remained stable, suggesting nutrient exchange patterns differed between methanotrophic communities at different resource concentrations. PHA accumulation was only observed in high resource enrichments, producing approximately 12.6% ± 2.4% (m/m) PHA, while PHA in low resource enrichments remained below detection. High resource enrichments were dominated by Methylocystis methanotrophs, while low resource enrichments remained significantly more diverse and contained only a minor population of methanotrophs. This study demonstrates that resource concentration shapes PHA-accumulating methanotrophic communities. Together, this provides useful information to leverage such communities in engineering settings as well as to begin understanding their role in the environment.
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Affiliation(s)
- Yujin Kim
- Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Zachary Flinkstrom
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, United States
| | - Pieter Candry
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, United States
| | - Mari-Karoliina H. Winkler
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, United States
| | - Jaewook Myung
- Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
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26
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Baustian MM, Liu B, Moss LC, Dausman A, Pahl JW. Climate change mitigation potential of Louisiana's coastal area: Current estimates and future projections. Ecol Appl 2023; 33:e2847. [PMID: 36932861 DOI: 10.1002/eap.2847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 12/01/2022] [Accepted: 12/20/2022] [Indexed: 06/02/2023]
Abstract
Coastal habitats can play an important role in climate change mitigation. As Louisiana implements its climate action plan and the restoration and risk-reduction projects outlined in its 2017 Louisiana Coastal Master Plan, it is critical to consider potential greenhouse gas (GHG) fluxes in coastal habitats. This study estimated the potential climate mitigation role of existing, converted, and restored coastal habitats for years 2005, 2020, 2025, 2030, and 2050, which align with the Governor of Louisiana's GHG reduction targets. An analytical framework was developed that considered (1) available scientific data on net ecosystem carbon balance fluxes per habitat and (2) habitat areas projected from modeling efforts used for the 2017 Louisiana Coastal Master Plan to estimate the net GHG flux of coastal area. The coastal area was estimated as net GHG sinks of -38.4 ± 10.6 and -43.2 ± 12.0 Tg CO2 equivalents (CO2 e) in 2005 and 2020, respectively. The coastal area was projected to remain a net GHG sink in 2025 and 2030, both with and without the implementation of Coastal Master Plan projects (means ranged from -25.3 to -34.2 Tg CO2 e). By 2050, with model-projected wetland loss and conversion of coastal habitats to open water due to coastal erosion and relative sea level rise, Louisiana's coastal area was projected to become a net source of GHG emissions both with and without the Coastal Master Plan projects. However, in the year 2050, the Louisiana Coastal Master Plan project implementation was projected to avoid the release of +8.8 ± 1.3 Tg CO2 e compared with an alternative with no action. Reduction in current and future stressors to coastal habitats, including impacts from sea level rise, as well as the implementation of restoration projects could help to ensure coastal areas remain a natural climate solution.
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Affiliation(s)
- Melissa M Baustian
- The Water Institute of the Gulf, 1110 River Road South, Suite 200, Baton Rouge, Louisiana, 70802, USA
- U.S. Geological Survey, Wetland and Aquatic Research Center, Baton Rouge, Louisiana, 70808, USA
| | - Bingqing Liu
- The Water Institute of the Gulf, 1110 River Road South, Suite 200, Baton Rouge, Louisiana, 70802, USA
| | - Leland C Moss
- Abt Associates, 6130 Executive Boulevard, Rockville, Maryland, 20852, USA
| | - Alyssa Dausman
- The Water Institute of the Gulf, 1110 River Road South, Suite 200, Baton Rouge, Louisiana, 70802, USA
| | - James W Pahl
- Louisiana Coastal Protection and Restoration Authority, 150 Terrace Avenue, Baton Rouge, Louisiana, 70802, USA
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27
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Chiani YT, Jacob P, Mayora G, Aquino DS, Quintana RD, Mesa L. Presence of Leptospira spp. in a Mosaic of Wetlands Used for Livestock Raising under Differing Hydroclimatic Conditions. Appl Environ Microbiol 2023:e0197122. [PMID: 37212703 DOI: 10.1128/aem.01971-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2023] Open
Abstract
Knowledge about the life cycle and survival mechanisms of leptospires in the environment is scarce, particularly regarding the environmental factors associated with their presence in ecosystems subject to livestock farming, where precipitation, seasonal floods, and river overflows could act as facilitators of leptospire dispersion. This study aimed to identify and study the presence of Leptospira spp. in the Lower Delta of the Paraná River and describe the physical, chemical, and hydrometeorological conditions associated with their presence in wetland ecosystems impaired by livestock raising intensification. Here, we show that the presence of Leptospira was determined mainly by water availability. We detected the species Leptospira kmetyi, L. mayottensis, and L. fainei and successfully cultured the saprophytic species L. meyeri from bottom sediment, suggesting the association of leptospires with microbial communities of the sediment's biofilm to enhance its survival and persistence in aquatic environments and adapt to changing environmental conditions. Knowledge of Leptospira sp. diversity in wetlands and the impact of climate variability on the transmission of these organisms is crucial for predicting and preventing leptospirosis outbreaks in the context of human health. IMPORTANCE Wetlands are environments that are often conducive to the survival and transmission of Leptospira because they provide a suitable habitat for the bacteria and are often home to many animal species that can act as reservoirs for leptospirosis. Bringing humans and animals into closer contact with contaminated water and soil and increased frequency and intensity of extreme weather events may further exacerbate the risk of leptospirosis outbreaks, which is mostly relevant in the context of climate change and a widespread intensification of productive activities, particularly in the Lower Delta of the Paraná River. The detection of leptospiral species in wetland ecosystems impaired by livestock raising intensification can help to identify propitious environmental factors and potential sources of infection, develop preventive measures, and plan for appropriate responses to outbreaks, ultimately improving public health outcomes.
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Affiliation(s)
- Yosena T Chiani
- Laboratorio Nacional de Referencia de Leptospirosis, Instituto Nacional de Enfermedades Respiratorias Dr. E. Coni, Administración Nacional de Laboratorios e Institutos de Salud (ANLIS Dr. C.G. Malbran), Santa Fe, Argentina
| | - Paulina Jacob
- Laboratorio Nacional de Referencia de Leptospirosis, Instituto Nacional de Enfermedades Respiratorias Dr. E. Coni, Administración Nacional de Laboratorios e Institutos de Salud (ANLIS Dr. C.G. Malbran), Santa Fe, Argentina
- Laboratorio de Leptospirosis, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Gisela Mayora
- Instituto Nacional de Limnología (INALI-CONICET-UNL), Ciudad Universitaria, Santa Fe, Argentina
| | - Diego S Aquino
- IIIA-UNSAM-CONICET, Instituto de Investigación e Ingeniería Ambiental, Escuela de Hábitat y Sostenibilidad, Buenos Aires, Argentina
- Consejo Nacional de Investigación en Ciencia y Tecnología, Buenos Aires, Argentina
| | - Rubén D Quintana
- IIIA-UNSAM-CONICET, Instituto de Investigación e Ingeniería Ambiental, Escuela de Hábitat y Sostenibilidad, Buenos Aires, Argentina
- Consejo Nacional de Investigación en Ciencia y Tecnología, Buenos Aires, Argentina
| | - Leticia Mesa
- Instituto Nacional de Limnología (INALI-CONICET-UNL), Ciudad Universitaria, Santa Fe, Argentina
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28
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Beranek CT, Clulow J, Mahony M. Life stage dependent predator-prey reversal between a frog (Litoria aurea) and a dragonfly (Anax papuensis). Ecology 2023:e4108. [PMID: 37212489 DOI: 10.1002/ecy.4108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 05/03/2023] [Accepted: 05/10/2023] [Indexed: 05/23/2023]
Affiliation(s)
- Chad T Beranek
- Conservation Science Research Group, School of Environmental and life Sciences, Biology Building, University of Newcastle, Callaghan, NSW, Australia
- FAUNA Research Alliance, Kahibah, NSW, Australia
| | - John Clulow
- Conservation Science Research Group, School of Environmental and life Sciences, Biology Building, University of Newcastle, Callaghan, NSW, Australia
- FAUNA Research Alliance, Kahibah, NSW, Australia
| | - Michael Mahony
- Conservation Science Research Group, School of Environmental and life Sciences, Biology Building, University of Newcastle, Callaghan, NSW, Australia
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29
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Lei J, Zhang X, Yan W, Chen X, Li Z, Dan P, Dan Q, Jiang W, Liu Q, Li Y. Urban Microplastic Pollution Revealed by a Large-Scale Wetland Soil Survey. Environ Sci Technol 2023; 57:8035-8043. [PMID: 37200099 DOI: 10.1021/acs.est.2c08567] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Microplastics (MPs), as a new persistent pollutant, can be emitted and accumulated in urban environments, but there is no detailed information on the driving factors of MP pollution. In this study, through a large-scale wetland soil survey, the features of MPs were characterized in each urban area. The results showed an average abundance to be 379 n/kg in wetland soil. Polypropylene, fiber or fragment, and black color were common composition, shape, and color, respectively. The spatial distribution information showed that MP abundance was significantly relevant to the distance from the urban economic center. Furthermore, the correlation and regression analysis revealed that MP abundance was related to soil heavy metal and atmospheric particle (PM10 and PM2.5) concentrations (P < 0.05), while the promotion of socioeconomic activities (urbanization level, population density, etc.) may aggravate the pollution degree. Additionally, by using structural equation modeling, it was found that the urbanization level was the dominant factor driving the MP pollution degree, with a total effect coefficient of 0.49. Overall, this work provides multi-sided environmental information regarding MP pollution in urban ecosystems, which is significant for follow-up studies of MP pollution control and restoration.
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Affiliation(s)
- Junjie Lei
- National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Laboratory of Urban Forest Ecology of Hunan Province, College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Xuyuan Zhang
- National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Laboratory of Urban Forest Ecology of Hunan Province, College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Wende Yan
- National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Laboratory of Urban Forest Ecology of Hunan Province, College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Xiaoyong Chen
- College of Arts and Sciences, Governors State University, University Park, Illinois 60484, United States
| | - Ziqian Li
- National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Laboratory of Urban Forest Ecology of Hunan Province, College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Peipei Dan
- National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Laboratory of Urban Forest Ecology of Hunan Province, College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Qing Dan
- National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Laboratory of Urban Forest Ecology of Hunan Province, College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Wenxi Jiang
- National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Laboratory of Urban Forest Ecology of Hunan Province, College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Qian Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yong Li
- National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Laboratory of Urban Forest Ecology of Hunan Province, College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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30
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Weil M, Wang H, Zak D, Urich T. Spatial and temporal niche separation of methanomassiliicoccales phylotypes in temperate fens. FEMS Microbiol Ecol 2023:7160450. [PMID: 37169886 DOI: 10.1093/femsec/fiad049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023] Open
Abstract
The hydrogen-dependent and methylotrophic order Methanomassiliicoccales consists of the families Methanomethylophilaceae and Methanomassiliicoccaceae. While Methanomethylophilaceae are comparatively well studied, there is a lack of knowledge on Methanomassiliicoccaceae. In this 16S rRNA gene amplicon sequencing based study we investigated the temporal and spatial dynamics of the Methanomassiliicoccales in drained and rewetted sites of three common temperate fen peatlands. A 2.5-year-monitoring of the fen microbiome composition in three peat depths revealed a dynamic methanogen and Methanomassiliicoccales composition across space and time. Four Methanomassiliicoccales phylotypes were found and they were differentially distributed between the fen types. The wetland cluster phylotype was omnipresent and dominant in abundance in all sites along all depths. The Methanomassiliicoccales phylotype was highly abundant in topsoil while the AB364942 phylotype was exclusively found in deeper regions of the rewetted percolation fen. The phylotype affiliated with Methanomassiliicoccales strain U3.2.1 was only detected in the rewetted percolation fen. We discussed the distribution of the four phylotypes with implications to their ecophysiology, where oxygen tolerance and substrate spectrum might play major roles. In conclusion, the Methanomassiliicoccales are widespread and do account for a significant proportion of methanogens, which might suggest their importance for methane emissions from peatlands.
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Affiliation(s)
- Micha Weil
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Str. 8, 17487 Greifswald, Germany
- Greifswald Mire Center, Soldmannstraße 15, 17487 Greifswald, Germany
| | - Haitao Wang
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Str. 8, 17487 Greifswald, Germany
| | - Dominik Zak
- Aarhus University, Department of Bioscience, F. Møllers Allé 3, 8000 Aarhus C, Denmark
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Department of Ecohydrology and Biogeochemistry, Müggelseedamm 301, 12587 Berlin, Germany
| | - Tim Urich
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Str. 8, 17487 Greifswald, Germany
- Greifswald Mire Center, Soldmannstraße 15, 17487 Greifswald, Germany
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Herath M, Jayathilaka T, Azamathulla HM, Mandala V, Rathnayake N, Rathnayake U. Sensitivity Analysis of Parameters Affecting Wetland Water Levels: A Study of Flood Detention Basin, Colombo, Sri Lanka. Sensors (Basel) 2023; 23:3680. [PMID: 37050741 PMCID: PMC10098969 DOI: 10.3390/s23073680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 03/25/2023] [Accepted: 03/31/2023] [Indexed: 06/19/2023]
Abstract
Wetlands play a vital role in ecosystems. They help in flood accumulation, water purification, groundwater recharge, shoreline stabilization, provision of habitats for flora and fauna, and facilitation of recreation activities. Although wetlands are hot spots of biodiversity, they are one of the most endangered ecosystems on the Earth. This is not only due to anthropogenic activities but also due to changing climate. Many studies can be found in the literature to understand the water levels of wetlands with respect to the climate; however, there is a lack of identification of the major meteorological parameters affecting the water levels, which are much localized. Therefore, this study, for the first time in Sri Lanka, was carried out to understand the most important parameters affecting the water depth of the Colombo flood detention basin. The temporal behavior of water level fluctuations was tested among various combinations of hydro-meteorological parameters with the help of Artificial Neural Networks (ANN). As expected, rainfall was found to be the most impacting parameter; however, apart from that, some interesting combinations of meteorological parameters were found as the second layer of impacting parameters. The rainfall-nighttime relative humidity, rainfall-evaporation, daytime relative humidity-evaporation, and rainfall-nighttime relative humidity-evaporation combinations were highly impactful toward the water level fluctuations. The findings of this study help to sustainably manage the available wetlands in Colombo, Sri Lanka. In addition, the study emphasizes the importance of high-resolution on-site data availability for higher prediction accuracy.
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Affiliation(s)
- Madhawa Herath
- Department of Mechanical Engineering, Faculty of Engineering, Sri Lanka Institute of Information Technology, Malabe 10115, Sri Lanka
| | - Tharaka Jayathilaka
- Department of Civil Engineering, Faculty of Engineering, Sri Lanka Institute of Information Technology, Malabe 10115, Sri Lanka
| | - Hazi Mohammad Azamathulla
- Department of Civil Engineering, Faculty of Engineering, University of the West Indies, St. Augustine P.O. Box 331310, Trinidad and Tobago
| | | | - Namal Rathnayake
- School of Systems Engineering, Kochi University of Technology, Tosayamada 782-8502, Japan
| | - Upaka Rathnayake
- Department of Civil Engineering and Construction, Faculty of Engineering and Design, Atlantic Technological University, F91 YW50 Sligo, Ireland
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Rahman NEB, Smith SW, Lam WN, Chong KY, Chua MSE, Teo PY, Lee DWJ, Phua SY, Aw CY, Lee JSH, Wardle DA. Leaf decomposition and flammability are largely decoupled across species in a tropical swamp forest despite sharing some predictive leaf functional traits. New Phytol 2023; 238:598-611. [PMID: 36651117 DOI: 10.1111/nph.18742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 01/09/2023] [Indexed: 06/17/2023]
Abstract
Decomposition and fire are major carbon pathways in many ecosystems, yet potential linkages between these processes are poorly understood. We test whether variability in decomposability and flammability across species are related to each other and to key plant functional traits in tropical swamp forests, where habitat degradation is elevating decomposition and fire regimes. Using senesced and fresh leaves of 22 swamp tree species in Singapore, we conducted an in situ decomposition experiment and a laboratory flammability experiment. We analysed 16 leaf physical and biochemical traits as predictors of decomposability and components of flammability: combustibility, ignitability and sustainability. Decomposability and flammability were largely decoupled across species, despite some shared predictive traits such as specific leaf area (SLA). Physical traits predicted that thicker leaves with a smaller SLA and volume decomposed faster, while various cation concentrations predicted flammability components, particularly ignitability. We show that flammability and decomposability of swamp forest leaves are decoupled because flammability is mostly driven by biochemical traits, while decomposition is driven by physical traits. Our approach identifies species that are slow to decompose and burn (e.g. Calophyllum tetrapterum and Xanthophyllum flavescens), which could be planted to mitigate carbon losses in tropical swamp reforestation.
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Affiliation(s)
- Nur E B Rahman
- Asian School of the Environment, Nanyang Technological University, 62 Nanyang Drive, Singapore City, 637459, Singapore
| | - Stuart W Smith
- Asian School of the Environment, Nanyang Technological University, 62 Nanyang Drive, Singapore City, 637459, Singapore
- Ecology, Conservation and Zoonosis Research and Enterprise Group, School of Applied Sciences, University of Brighton, Lewes Road, Brighton, BN2 4GJ, UK
| | - Weng Ngai Lam
- Asian School of the Environment, Nanyang Technological University, 62 Nanyang Drive, Singapore City, 637459, Singapore
| | - Kwek Yan Chong
- Department of Biological Sciences, National University of Singapore, Science Drive 4, Singapore City, 117558, Singapore
- Singapore Botanic Gardens, National Parks Board, 1 Cluny Road, Singapore City, 259 569, Singapore
| | - Matthias S E Chua
- Asian School of the Environment, Nanyang Technological University, 62 Nanyang Drive, Singapore City, 637459, Singapore
- Department of Biological Sciences, National University of Singapore, Science Drive 4, Singapore City, 117558, Singapore
| | - Pei Yun Teo
- Asian School of the Environment, Nanyang Technological University, 62 Nanyang Drive, Singapore City, 637459, Singapore
| | - Daniel W J Lee
- Asian School of the Environment, Nanyang Technological University, 62 Nanyang Drive, Singapore City, 637459, Singapore
| | - Shi Yu Phua
- Asian School of the Environment, Nanyang Technological University, 62 Nanyang Drive, Singapore City, 637459, Singapore
| | - Cheryl Y Aw
- Asian School of the Environment, Nanyang Technological University, 62 Nanyang Drive, Singapore City, 637459, Singapore
| | - Janice S H Lee
- Asian School of the Environment, Nanyang Technological University, 62 Nanyang Drive, Singapore City, 637459, Singapore
| | - David A Wardle
- Asian School of the Environment, Nanyang Technological University, 62 Nanyang Drive, Singapore City, 637459, Singapore
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Chen HM, Shi FX, Wang XW, Zhang XH, Mao R. Conversion of drylands to paddy fields on former wetlands restores soil organic carbon by accumulating labile carbon fractions in the Sanjiang Plain, northeast China. J Sci Food Agric 2023; 103:599-605. [PMID: 36468612 DOI: 10.1002/jsfa.12171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 07/30/2022] [Accepted: 08/09/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Since the 1990s, drylands have been extensively converted to rice paddy fields on the former wetlands in the Sanjiang Plain of northeast China. However, the influence of this successiveland-use change from native wetlands to drylands to rice paddy fields on soil organic carbon (C) dynamics remains unexplored. Here, we compared the difference in soil organic C stock among native wetlands, drylands, and paddy fields, and then used a two-step acid hydrolysis approach to examine the effect of this land-use change on labile C I (LPI-C), labile C II (LPII-C), and recalcitrant C (RP-C) fractions at depths of 0-15 cm, 15-30 cm, and 30-50 cm. RESULTS Soil organic C stock at a depth of 0-50 cm was reduced by 79% after the conversion of wetlands to drylands but increased by 24% when drylands were converted to paddy fields. Compared with wetlands, paddy fields had 74% lower soil organic C stock at a depth of 0-50 cm. The conversion of wetlands to drylands reduced the concentrations of LPI-C, LPII-C, and RP-C fractions at each soil depth. However, land-use change from drylands to paddy fields only increased the concentrations of LPI-C and LPII-C fractions at the 0-15 cm and 30-50 cm depths. CONCLUSION The conversion of drylands to paddy lands on former wetlands enhances the soil organic C stock by promoting labile C fraction accumulation, and labile C fractions are more sensitive to this successive land-use change than recalcitrant C fractions in the Sanjiang Plain of northeast China. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Hui-Min Chen
- Key Laboratory of National Forestry and Grassland Administration on Forest Ecosystem Protection and Restoration of Poyang Lake Watershed, College of Forestry, Jiangxi Agricultural University, Nanchang, China
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
| | - Fu-Xi Shi
- Key Laboratory of National Forestry and Grassland Administration on Forest Ecosystem Protection and Restoration of Poyang Lake Watershed, College of Forestry, Jiangxi Agricultural University, Nanchang, China
| | - Xian-Wei Wang
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
| | - Xin-Hou Zhang
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
- School of Environment, Nanjing Normal University, Nanjing, China
| | - Rong Mao
- Key Laboratory of National Forestry and Grassland Administration on Forest Ecosystem Protection and Restoration of Poyang Lake Watershed, College of Forestry, Jiangxi Agricultural University, Nanchang, China
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
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Troia A. Macrophytes in Inland Waters: From Knowledge to Management. Plants (Basel) 2023; 12:582. [PMID: 36771666 PMCID: PMC9921133 DOI: 10.3390/plants12030582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
The huge biodiversity of inland waters and the many different aquatic habitats or ecosystems occurring there are particularly threatened by human impacts. In this Special Issue, ten articles have been collected that show new data on the distribution and ecology of some rare aquatic macrophytes, including both vascular plants and charophytes, but also on the use of these organisms for the monitoring, management, and restoration of wetlands.
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Affiliation(s)
- Angelo Troia
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STeBiCeF), Università degli Studi di Palermo, 90123 Palermo, Italy
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Oliveira IF, Baccaro FB, Werneck FP, Haugaasen T. Seasonal flooding decreases fruit-feeding butterfly species dominance and increases spatial turnover in floodplain forests of central Amazonia. Ecol Evol 2023; 13:e9718. [PMID: 36620401 PMCID: PMC9817189 DOI: 10.1002/ece3.9718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 12/12/2022] [Accepted: 12/19/2022] [Indexed: 01/09/2023] Open
Abstract
The seasonal flood pulse in Amazonia can be considered a primary driver of community structure in floodplain environments. Although this natural periodic disturbance is part of the landscape dynamics, the seasonal inundation presents a considerable challenge to organisms that inhabit floodplain forests. The present study investigated the effect of seasonal flooding on fruit-feeding butterfly assemblages in different forest types and strata in central Amazonia. We sampled fruit-feeding butterflies in the canopy and the understory using baited traps in adjacent upland (unflooded forests-terra firme), white and blackwater floodplain forests (várzea and igapó, respectively) during the low- and high-water seasons. Butterfly abundance decreased in the high-water season, especially of dominant species in várzea, but the number of species was similar between seasons in the three forest types. Species composition differed between strata in all forest types. However, the flood pulse only affected butterfly assemblages in várzea forest. The β-diversity components also differed only in várzea. Species replacement (turnover) dominated the spatial β-diversity in igapó and terra firme in both seasons and várzea in the high-water season. Nonetheless, nestedness was relatively higher in várzea forests during the low-water season, mainly due to the effect of dominant species. These results emphasize the importance of seasonal flooding to structure butterfly assemblages in floodplain forests and reveal the idiosyncrasy of butterfly community responses to flooding in different forest types. Our results also suggest that any major and rapid changes to the hydrological regime could severely affect floodplain communities adapted to this natural seasonal hydrological cycle, threatening the existence of these unique environments.
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Affiliation(s)
- Isabela Freitas Oliveira
- Programa de Pós‐Graduação em EcologiaInstituto Nacional de Pesquisas da Amazônia – INPAManausBrazil,Ecosystem Modeling, Center for Computational and Theoretical Biology (CCTB)University of WürzburgWürzburgGermany,Faculty of Environmental Sciences and Natural Resource ManagementNorwegian University of Life Sciences – NMBUÅsNorway
| | | | - Fernanda P. Werneck
- Coordenação de Biodiversidade, Programa de Coleções Científicas BiológicasInstituto Nacional de Pesquisas da Amazônia – INPAManausBrazil
| | - Torbjørn Haugaasen
- Faculty of Environmental Sciences and Natural Resource ManagementNorwegian University of Life Sciences – NMBUÅsNorway
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Millikin AR, Davis DR, Brown DJ, Woodley SK, Coster S, Welsh A, Kerby JL, Anderson JT. PREVALENCE OF RANAVIRUS IN SPOTTED SALAMANDER (AMBYSTOMA MACULATUM) LARVAE FROM CREATED VERNAL POOLS IN WEST VIRGINIA, USA. J Wildl Dis 2023. [PMID: 36584341 DOI: 10.7589/JWD-D-22-00032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 07/18/2022] [Indexed: 01/01/2023]
Abstract
Ranavirosis is a disease of high concern for amphibians due to widespread documentation of its lethal and sublethal impacts and its high transmission potential across populations and species. We investigated whether spotted salamander (Ambystoma maculatum) ranavirus prevalence and viral load were associated with habitat characteristics, genetic diversity, corticosterone levels, and body size. In 2015 and 2016, we sampled 34 recently created vernal pools in the Monongahela National Forest, West Virginia, USA. We collected tail clippings from 1,128 spotted salamander larvae and waterborne hormone samples from 436 of those larvae, along with eight environmental characteristics of the pools. Over the 2-yr period, we detected ranavirus in 62% of pools, with prevalence ranging from 0% to 63% (mean, 7.68%). Spotted salamander size was positively correlated with ranavirus presence and viral load; however, we did not find associations between ranavirus prevalence or viral load and habitat characteristics, spotted salamander genetic diversity, relatedness, effective number of breeders, or corticosterone levels. The widespread occurrence of ranavirus in the vernal pools illustrates the potential for rapid natural introduction of the pathogen to created wetlands. Managers could consider monitoring local distributions of ranavirus before creation of new vernal pools to guide strategic placement of the wetlands to minimize occurrence and prevalence of this pathogen.
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Desai AR, Murphy BA, Wiesner S, Thom J, Butterworth BJ, Koupaei‐Abyazani N, Muttaqin A, Paleri S, Talib A, Turner J, Mineau J, Merrelli A, Stoy P, Davis K. Drivers of Decadal Carbon Fluxes Across Temperate Ecosystems. J Geophys Res Biogeosci 2022; 127:e2022JG007014. [PMID: 37502709 PMCID: PMC10369927 DOI: 10.1029/2022jg007014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 11/18/2022] [Accepted: 11/21/2022] [Indexed: 07/29/2023]
Abstract
Long-running eddy covariance flux towers provide insights into how the terrestrial carbon cycle operates over multiple timescales. Here, we evaluated variation in net ecosystem exchange (NEE) of carbon dioxide (CO2) across the Chequamegon Ecosystem-Atmosphere Study AmeriFlux core site cluster in the upper Great Lakes region of the USA from 1997 to 2020. The tower network included two mature hardwood forests with differing management regimes (US-WCr and US-Syv), two fen wetlands with varying levels of canopy sheltering and vegetation (US-Los and US-ALQ), and a very tall (400 m) landscape-level tower (US-PFa). Together, they provided over 70 site-years of observations. The 19-tower Chequamegon Heterogenous Ecosystem Energy-balance Study Enabled by a High-density Extensive Array of Detectors 2019 campaign centered around US-PFa provided additional information on the spatial variation of NEE. Decadal variability was present in all long-term sites, but cross-site coherence in interannual NEE in the earlier part of the record became weaker with time as non-climatic factors such as local disturbances likely dominated flux time series. Average decadal NEE at the tall tower transitioned from carbon source to sink to near neutral over 24 years. Respiration had a greater effect than photosynthesis on driving variations in NEE at all sites. Declining snowfall offset potential increases in assimilation from warmer springs, as less-insulated soils delayed start of spring green-up. Higher CO2 increased maximum net assimilation parameters but not total gross primary productivity. Stand-scale sites were larger net sinks than the landscape tower. Clustered, long-term carbon flux observations provide value for understanding the diverse links between carbon and climate and the challenges of upscaling these responses across space.
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Affiliation(s)
- Ankur R. Desai
- Department of Atmospheric and Oceanic SciencesUniversity of Wisconsin–MadisonMadisonWIUSA
| | - Bailey A. Murphy
- Department of Atmospheric and Oceanic SciencesUniversity of Wisconsin–MadisonMadisonWIUSA
| | - Susanne Wiesner
- Department of Plant and Earth ScienceUniversity of Wisconsin–River FallsRiver FallsWIUSA
| | - Jonathan Thom
- Space Science and Engineering CenterUniversity of Wisconsin–MadisonMadisonWIUSA
| | - Brian J. Butterworth
- Cooperative Institute for Research in Environmental SciencesCU BoulderBoulderCOUSA
- NOAA Physical Sciences LaboratoryBoulderCOUSA
| | | | - Andi Muttaqin
- Department of Atmospheric and Oceanic SciencesUniversity of Wisconsin–MadisonMadisonWIUSA
| | - Sreenath Paleri
- Department of Atmospheric and Oceanic SciencesUniversity of Wisconsin–MadisonMadisonWIUSA
| | - Ammara Talib
- Department of Civil and Environmental EngineeringUniversity of Wisconsin–MadisonMadisonWIUSA
| | - Jess Turner
- Freshwater & Marine SciencesUniversity of Wisconsin–MadisonMadisonWIUSA
| | - James Mineau
- Department of Atmospheric and Oceanic SciencesUniversity of Wisconsin–MadisonMadisonWIUSA
| | - Aronne Merrelli
- Department of Climate and Space Sciences and EngineeringUniversity of MichiganAnn ArborMIUSA
| | - Paul Stoy
- Department of Plant and Earth ScienceUniversity of Wisconsin–River FallsRiver FallsWIUSA
| | - Ken Davis
- Department of MeteorologyPennsylvania State UniversityUniversity ParkPAUSA
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Booth EG, Loheide SP, Bart D. Fen ecohydrologic trajectories in response to groundwater drawdown with an edaphic feedback. Ecohydrology 2022; 15:e2471. [PMID: 37034387 PMCID: PMC10078336 DOI: 10.1002/eco.2471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 05/13/2022] [Accepted: 08/15/2022] [Indexed: 06/19/2023]
Abstract
Fens are high conservation value ecosystems that depend on consistent discharge of groundwater that saturates the near surface for most of the growing season. Reduced groundwater inputs can result in losses of native diversity, decreases in rare-species abundance and increased invasion by non-native species. As such, fen ecosystems are known to be particularly susceptible to changes in groundwater conditions including reduction in water levels due to nearby groundwater pumping. However, research is lacking on whether floristic degradation is influenced by feedbacks between hydrology and soil properties. We present a model of an archetype hillslope fen that couples a hydrological niche model with a variably saturated groundwater flow model to predict changes in vegetation composition in response to different groundwater drawdown scenarios. The model explores a potential edaphic feedback through the use of an observed relationship between fen floristic quality and soil/peat water retention characteristics that is attenuated with separate edaphic and floristic memory terms representing lags in biophysical responses to dewatering. Model parameters were determined based on data collected from six fens in Wisconsin under various states of degradation. We observed different water retention characteristics between sites that were minimally impacted versus degraded that are likely due to peat decomposition, oxidation and compaction at the degraded sites. These characteristics were also correlated with floristic quality. The results reveal a complex response to drawdown where changes in peat hydraulic properties following dewatering lead to even drier conditions and further shifts away from typical fen species.
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Affiliation(s)
- Eric G. Booth
- Department of Agronomy and Department of Civil and Environmental EngineeringUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - Steven P. Loheide
- Department of Civil and Environmental EngineeringUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - David Bart
- Department of Planning and Landscape ArchitectureUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
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Judah A, Hu B. An Advanced Data Fusion Method to Improve Wetland Classification Using Multi-Source Remotely Sensed Data. Sensors (Basel) 2022; 22:8942. [PMID: 36433540 PMCID: PMC9697073 DOI: 10.3390/s22228942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/09/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
The goal of this research was to improve wetland classification by fully exploiting multi-source remotely sensed data. Three distinct classifiers were designed to distinguish individual or compound wetland categories using random forest (RF) classification. They were determined, in part, to best use the available remotely sensed features in order to maximize that information and to maximize classification accuracy. The results from these classifiers were integrated according to Dempster−Shafer theory (D−S theory). The developed method was tested on data collected from a study area in Northern Alberta, Canada. The data utilized were Landsat-8 and Sentinel-2 (multi-spectral), Sentinel-1 (synthetic aperture radar—SAR), and digital elevation model (DEM). Classification of fen, bog, marsh, swamps, and upland resulted in an overall accuracy of 0.93 using the proposed methodology, an improvement of 5% when compared to a traditional classification method based on the aggregated features from these data sources. It was noted that, with the traditional method, some pixels were misclassified with a high level of confidence (>85%). Such misclassification was significantly reduced (by ~10%) by the proposed method. Results also showed that some features important in separating compound wetland classes were not considered important using the traditional method based on the RF feature selection mechanism. When used in the proposed method, these features increased the classification accuracy, which demonstrated that the proposed method provided an effective means to fully employ available data to improve wetland classification.
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Pérez-Méndez N, Alcaraz C, Bertolero A, Català-Forner M, Garibaldi LA, González-Varo JP, Rivaes S, Martínez-Eixarch M. Agricultural policies against invasive species generate contrasting outcomes for climate change mitigation and biodiversity conservation. Proc Biol Sci 2022; 289:20221081. [PMID: 36259205 PMCID: PMC9579768 DOI: 10.1098/rspb.2022.1081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 09/27/2022] [Indexed: 11/12/2022] Open
Abstract
Direct consequences of biological invasions on biodiversity and the environment have been largely documented. Yet collateral indirect effects mediated by changes in agri-environmental policies aimed at combating invasions remain little explored. Here we assessed the effects of recent changes in water management in rice farming, which are aimed at buffering the impact of the invasive apple snail (Pomacea maculata, Lamarck) on greenhouse gas emissions and diversity of waterbird communities. We used observational data from a 2-year field monitoring (2015-2016) performed at the Ebro Delta regional scale. We found that drying rice fields reduced methane emission rates by 82% (2015) and 51% (2016), thereby reflecting the contribution of rice farming to climate change. However, there was a marked reduction (75% in 2015 and 57% in 2016) in waterbird diversity in dry fields compared with flooded fields, thus suggesting that post-invasion policies might hinder biodiversity conservation. Our results highlight the need for accounting for potential collateral effects during the policy decision-making process to design efficient agricultural management plans that lessen undesirable agri-environmental outcomes.
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Affiliation(s)
- N. Pérez-Méndez
- Sustainable Field Crops Program, IRTA-Amposta, Tarragona, Spain
| | - C. Alcaraz
- Marine and Continental Waters Program, IRTA-La Ràpita, Tarragona, Spain
| | - A. Bertolero
- Associació Ornitológica Picampall de les Terres de l'Ebre, Tarragona, Spain
| | | | - L. A. Garibaldi
- Universidad Nacional de Río Negro, Instituto de Investigaciones en Recursos Naturales, Agroecología y Desarrollo Rural, San Carlos de Bariloche, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Investigaciones en Recursos Naturales, Agroecología y Desarrollo Rural, San Carlos de Bariloche, Argentina
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Xin Y, Ji L, Wang Z, Li K, Xu X, Guo D. Functional Diversity and CO 2 Emission Characteristics of Soil Bacteria during the Succession of Halophyte Vegetation in the Yellow River Delta. Int J Environ Res Public Health 2022; 19:12919. [PMID: 36232219 PMCID: PMC9564505 DOI: 10.3390/ijerph191912919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 10/04/2022] [Accepted: 10/05/2022] [Indexed: 06/17/2023]
Abstract
Carbon dioxide (CO2) is the most important greenhouse gas in the atmosphere, which is mainly derived from microbial respiration in soil. Soil bacteria are an important part of the soil ecosystem and play an important role in the process of plant growth, mineralization, and decomposition of organic matter. In this paper, we discuss a laboratory incubation experiment that we conducted to investigate the CO2 emissions and the underlying bacterial communities under the natural succession of halophyte vegetation in the Yellow River Delta by using high-throughput sequencing technology and PICRUSt functional prediction. The results showed that the bacterial abundance and diversity increased significantly along with the succession of halophyte vegetation. Metabolic function is the dominant function of soil bacteria in the study area. With the succession of halophyte vegetation, the rate of CO2 emissions gradually increased, and were significantly higher in soil covered with vegetation than that of the bare land without vegetation coverage. These results helped to better understand the relationships of soil bacterial communities under the background of halophyte vegetation succession, which can help to make efficient strategies to mitigate CO2 emissions and enhance carbon sequestration.
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France JL, Lunt MF, Andrade M, Moreno I, Ganesan AL, Lachlan-Cope T, Fisher RE, Lowry D, Parker RJ, Nisbet EG, Jones AE. Very large fluxes of methane measured above Bolivian seasonal wetlands. Proc Natl Acad Sci U S A 2022; 119:e2206345119. [PMID: 35914152 DOI: 10.1073/pnas.2206345119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Methane (CH4) mole fractions from the large semiseasonal Llanos de Moxos wetlands (∼70,000 km2) in northern Bolivia were measured by aircraft flights and ground sampling during early March 2019 (late wet season). Daily fluxes of CH4 determined from the measurements using box models and inverse modeling were between 168 (± 50) and 456 (± 145) mg CH4⋅m−2⋅d−1 for the areas overflown, very high compared with those of previous Amazon basin studies. If the seasonality of the CH4 emissions is comparable to other parts of the Amazon Basin, the region could contribute as much as 8% of annual Amazonian CH4 emissions.
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Rey‐Sanchez C, Arias‐Ortiz A, Kasak K, Chu H, Szutu D, Verfaillie J, Baldocchi D. Detecting Hot Spots of Methane Flux Using Footprint-Weighted Flux Maps. J Geophys Res Biogeosci 2022; 127:e2022JG006977. [PMID: 36248720 PMCID: PMC9542288 DOI: 10.1029/2022jg006977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 07/04/2022] [Accepted: 07/05/2022] [Indexed: 05/28/2023]
Abstract
In this study, we propose a new technique for mapping the spatial heterogeneity in gas exchange around flux towers using flux footprint modeling and focusing on detecting hot spots of methane (CH4) flux. In the first part of the study, we used a CH4 release experiment to evaluate three common flux footprint models: the Hsieh model (Hsieh et al., 2000), the Kljun model (Kljun et al., 2015), and the K & M model (Kormann and Meixner, 2001), finding that the K & M model was the most accurate under these conditions. In the second part of the study, we introduce the Footprint-Weighted Flux Map, a new technique to map spatial heterogeneity in fluxes. Using artificial CH4 release experiments, natural tracer approaches and flux chambers we mapped the spatial flux heterogeneity, and detected and validated a hot spot of CH4 flux in a oligohaline restored marsh. Through chamber measurements during the months of April and May, we found that fluxes at the hot spot were on average as high as 6589 ± 7889 nmol m-2 s-1 whereas background flux from the open water were on average 15.2 ± 7.5 nmol m-2 s-1. This study provides a novel tool to evaluate the spatial heterogeneity of fluxes around eddy-covariance towers and creates important insights for the interpretation of hot spots of CH4 flux, paving the way for future studies aiming to understand subsurface biogeochemical processes and the microbiological conditions that lead to the occurrence of hot spots and hot moments of CH4 flux.
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Affiliation(s)
- Camilo Rey‐Sanchez
- Department of Environmental Science Policy and ManagementUniversity of California BerkeleyBerkeleyCAUSA
- Department of Marine, Earth and Atmospheric SciencesNorth Carolina State UniversityRaleighNCUSA
| | - Ariane Arias‐Ortiz
- Department of Environmental Science Policy and ManagementUniversity of California BerkeleyBerkeleyCAUSA
- Institute of Marine SciencesUniversity of CaliforniaSanta CruzCAUSA
| | - Kuno Kasak
- Department of GeographyUniversity of TartuTartuEstonia
| | - Housen Chu
- Earth & Environmental Sciences AreaLawrence Berkeley National LaboratoryBerkeleyCAUSA
| | - Daphne Szutu
- Department of Environmental Science Policy and ManagementUniversity of California BerkeleyBerkeleyCAUSA
| | - Joseph Verfaillie
- Department of Environmental Science Policy and ManagementUniversity of California BerkeleyBerkeleyCAUSA
| | - Dennis Baldocchi
- Department of Environmental Science Policy and ManagementUniversity of California BerkeleyBerkeleyCAUSA
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Bussan DD, Douvris C, Cizdziel JV. Mercury Methylation Potentials in Sediments of an Ancient Cypress Wetland Using Species-Specific Isotope Dilution GC-ICP-MS. Molecules 2022; 27. [PMID: 35956861 DOI: 10.3390/molecules27154911] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 07/26/2022] [Accepted: 07/28/2022] [Indexed: 11/17/2022] Open
Abstract
Wetlands are of a considerable environmental value as they provide food and habitat for plants and animals. Several important chemical transformations take place in wetland media, including the conversion of inorganic mercury (Hg) to monomethylmercury (MeHg), a toxic compound with a strong tendency for bioconcentration. Considering the fact that wetlands are hotspots for Hg methylation, we investigated, for the first time, Hg methylation and demethylation rates in an old growth cypress wetland at Sky Lake in the Mississippi Delta. The Sky Lake ecosystem undergoes large-scale water level fluctuations causing alternating periods of oxic and anoxic conditions in the sediment. These oscillating redox conditions, in turn, can influence the transformation, speciation, and bioavailability of Hg. In the present study, sediment cores from the wetland and Sky Lake itself were spiked with enriched stable isotope tracers of inorganic Hg and MeHg and allowed to incubate (in-situ) before freezing, sectioning, and analysis. Methylation rates (day−1) ranged from 0.012 ± 0.003 to 0.054 ± 0.019, with the lowest rate in the winter and the highest in the summer. Demethylation rates were about two orders of magnitude higher, and also greater in the warmer seasons (e.g., 1.84 ± 0.78 and 4.63 ± 0.51 for wetland sediment in the winter and summer, respectively). Methylation rates were generally higher in the open water sediment compared to wetland sediment, with the latter shaded and cooler. Both methylation (r = 0.76, p = 0.034) and demethylation (0.97, p = 0.016) rates (day−1) were positively correlated with temperature, but not with most other water quality parameters. MeHg concentration in the water was correlated with pH (r = 0.80, p < 0.05), but methylation rates were only marginally correlated (r = 0.71). Environmental factors driving microbial production of MeHg in the system include warm temperatures, high levels of labile natural organic matter, and to a lesser extent the relatively low pH and the residence time of the water. This study also provides baseline data that can be used to quantify the impacts of modifying the natural flow of water to the system on Hg methylation and demethylation rates.
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Satjarak A, Graham LE, Trest MT, Zedler J, Knack JJ, Arancibia-Avila P. Nitrogen fixation and other biogeochemically important features of Atacama Desert giant horsetail plant microbiomes inferred from metagenomic contig analysis. Ann Bot 2022; 130:65-75. [PMID: 35533355 PMCID: PMC9295926 DOI: 10.1093/aob/mcac060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 05/05/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND AND AIMS Canyon stream beds in the hyperarid Atacama Desert surprisingly harbour magnificent groves of endemic giant horsetail wetland plants, Equisetum xylochaetum. Our previous metagenomic study of eukaryotes closely associated with this plant indicated that the microbiome included prokaryotes that might likewise influence host success and environment. We explored this possibility by using the metagenomic sequence to characterize prokaryote taxa and functional genes present in the microbiome of E. xylochaetum sampled from remote sites differing in the degree of anthropogenic disturbance. We focused on biogeochemical functions known to be important in wetland ecosystems. METHODS To ensure that analyses were conducted on microbes most closely associated with plants, we extracted DNA from well-washed plant organs whose microbial biofilms were revealed with scanning electron microscopy. To assess the benefits of longer sequences for taxonomic and gene classifications, results of analyses performed using contigs were compared with those obtained with unassembled reads. We employed methods widely used to estimate genomic coverage of single taxa for genomic analysis to infer relative abundances of taxa and functional genes. KEY RESULTS Key functional bacterial genera (e.g. Hydrogenophaga, Sulfuritalea and Rhodoferax) inferred from taxonomic and functional gene analysis of contigs - but not unassembled reads - to occur on surfaces of (or within) plants at relatively high abundance (>50× genomic coverage) indicated roles in nitrogen, sulfur and other mineral cycling processes. Comparison between sites revealed impacts on biogeochemical functions, e.g. reduced levels of the nifH gene marker under disturbance. Vanadium nitrogenases were more important than molybdenum nitrogenases, indicated by both functional genes and taxa such as Rhodomicrobium and Phaeospirillum inferred from contigs but not unassembled reads. CONCLUSIONS Our contig-based metagenomic analyses revealed that microbes performing key wetland biogeochemical functions occur as tightly adherent biofilms on the plant body, not just in water or sediments, and that disturbance reduces such functions, providing arguments for conservation efforts.
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Affiliation(s)
| | - Linda E Graham
- Department of Botany, University of Wisconsin-Madison, Madison, WI, USA
| | - Marie T Trest
- Department of Botany, University of Wisconsin-Madison, Madison, WI, USA
| | - Joy Zedler
- Department of Botany, University of Wisconsin-Madison, Madison, WI, USA
| | - Jennifer J Knack
- Department of Botany, University of Wisconsin-Madison, Madison, WI, USA
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Bernardino AF, Mazzuco ACA, Souza FM, Santos TMT, Sanders CJ, Massone CG, Costa RF, Silva AEB, Ferreira TO, Nóbrega GN, Silva TSF, Kauffman JB. The novel mangrove environment and composition of the Amazon Delta. Curr Biol 2022; 32:3636-3640.e2. [PMID: 35863350 DOI: 10.1016/j.cub.2022.06.071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/21/2022] [Accepted: 06/22/2022] [Indexed: 11/25/2022]
Abstract
Both freshwater floodplain (várzeas and igapós) forests and brackish-saline mangroves are abundant and well-described ecosystems in Brazil.1 However, an interesting and unique wetland forest exists in the Amazon Delta where extensive mangroves occur in essentially freshwater tidal environments. Unlike the floodplain forests found upriver, the hydrology of these ecosystems is driven largely by large macro-tides of 4-8 m coupled with the significant freshwater discharge from the Amazon River. We explored these mangroves on the Amazon Delta (00°52' N to 01°41' N) and found surface water salinity to be consistently <5; soil pore water salinity in these mangrove forests ranged from 0 nearest the Amazon mouth to only 5-11 at the coastal margins to the north (01°41' N, 49°55' W). We also recorded a unique mix of mangrove-obligate (Avicennia sp., Rhizophora mangle) and facultative-wetland species (Mauritia flexuosa, Pterocarpus sp.) dominating these forests. This unique mix of plant species and soil porewater chemistry exists even along the coastal strands and active coastlines of the Atlantic Ocean. Part of these unique mangroves have escaped current global satellite mapping efforts, and we estimate that they may add over 180 km2 (20% increase in mangrove area) within the Amazon Delta. Despite having a unique structure and function, these freshwater-brackish ecosystems likely provide similar ecosystem services to most mangroves worldwide, such as sequestering large quantities of organic carbon, protection of shoreline ecosystems from erosion, and habitats to many terrestrial and aquatic species (monkeys, birds, crabs, and fish).
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Affiliation(s)
- Angelo F Bernardino
- Departamento de Oceanografia, Universidade Federal do Espirito Santo, Av. Fernando Ferrari, 514, Vitória, Espirito Santo 29075910, Brazil.
| | - Ana Carolina A Mazzuco
- Departamento de Oceanografia, Universidade Federal do Espirito Santo, Av. Fernando Ferrari, 514, Vitória, Espirito Santo 29075910, Brazil
| | - Fernanda M Souza
- Departamento de Oceanografia, Universidade Federal do Espirito Santo, Av. Fernando Ferrari, 514, Vitória, Espirito Santo 29075910, Brazil
| | - Thuareag M T Santos
- Departamento de Oceanografia, Universidade Federal do Espirito Santo, Av. Fernando Ferrari, 514, Vitória, Espirito Santo 29075910, Brazil
| | - Christian J Sanders
- National Marine Science Centre, Southern Cross University, Coffs Harbour, NSW 2450, Australia
| | - Carlos G Massone
- Departamento de Química, PUC-Rio, Rua Marquês de São Vicente, 225, Gávea, Rio de Janeiro 22451-900, Brazil
| | - Rodolfo F Costa
- Departamento de Ciência do Solo, Universidade de São Paulo, Av. Pádua Dias, 11, Piracicaba 13418-900, Brazil
| | - Antônio Elves B Silva
- Departamento de Ciência do Solo, Universidade de São Paulo, Av. Pádua Dias, 11, Piracicaba 13418-900, Brazil
| | - Tiago O Ferreira
- Departamento de Ciência do Solo, Universidade de São Paulo, Av. Pádua Dias, 11, Piracicaba 13418-900, Brazil
| | - Gabriel N Nóbrega
- Departamento de Geoquímica, Universidade Federal Fluminense, Outeiro São João Batista, S/N, Centro, Niterói 24020-141, Brazil
| | - Thiago S F Silva
- Faculty of Natural Sciences, University of Stirling, Stirling FK9 4LA, Scotland, UK
| | - J Boone Kauffman
- Department of Fisheries, Wildlife, and Conservation Sciences, Oregon State University, 104 Nash Hall, Corvallis, OR 97331, USA
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Zamora S, Zitácuaro-Contreras I, Betanzo-Torres EA, Herazo LCS, Sandoval-Herazo M, Vidal-Álvarez M, Marín-Muñiz JL. Carbon Pool in Mexican Wetland Soils: Importance of the Environmental Service. Life (Basel) 2022; 12:life12071032. [PMID: 35888120 PMCID: PMC9322611 DOI: 10.3390/life12071032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 07/07/2022] [Accepted: 07/07/2022] [Indexed: 12/03/2022] Open
Abstract
Mexican wetlands are not included in Earth system models around the world, despite being an important carbon store in the wetland soils in the tropics. In this review, five different types of wetlands were observed (marshes, swamps, flooded grasslands, flooded palms and mangroves) in which their carbon pool/carbon sequestrations in Mexican zones were studied. In addition, it was shown that swamps (forested freshwater wetlands) sequestered more carbon in the soil (86.17 ± 35.9 Kg C m−2) than other types of wetlands (p = 0.011); however, these ecosystems are not taken into consideration by the Mexican laws on protection compared with mangroves (34.1 ± 5.2 Kg C m−2). The carbon pool detected for mangrove was statistically similar (p > 0.05) to data of carbon observed in marshes (34.1 ± 5.2 Kg C m−2) and flooded grassland (28.57 ± 1.04 Kg C m−2) ecosystems. The value of carbon in flooded palms (8.0 ± 4.2 Kg C m−2) was lower compared to the other wetland types, but no significant differences were found compared with flooded grasslands (p = 0.99). Thus, the carbon deposits detected in the different wetland types should be taken into account by policy makers and agents of change when making laws for environmental protection, as systematic data on carbon dynamics in tropical wetlands is needed in order to allow their incorporation into global carbon budgets.
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Affiliation(s)
- Sergio Zamora
- Facultad de Ingeniería, Construcción y Habitad, Universidad Veracruzana, Bv. Adolfo Ruíz Cortines 455, Costa Verde, Boca del Rio 94294, Veracruz, Mexico;
| | - Irma Zitácuaro-Contreras
- Academy of Sustainable Regional Development, El Colegio de Veracruz, Xalapa 91000, Veracruz, Mexico;
| | - Erick Arturo Betanzo-Torres
- Wetlands and Environmental Sustainability Laboratory, Division of Graduate Studies and Research, Tecnológico Nacional de México/Instituto Tecnológico de Misantla, Veracruz, Km 1.8 Carretera a Loma del Cojolite, Misantla 93821, Veracruz, Mexico; (E.A.B.-T.); (L.C.S.H.)
| | - Luis Carlos Sandoval Herazo
- Wetlands and Environmental Sustainability Laboratory, Division of Graduate Studies and Research, Tecnológico Nacional de México/Instituto Tecnológico de Misantla, Veracruz, Km 1.8 Carretera a Loma del Cojolite, Misantla 93821, Veracruz, Mexico; (E.A.B.-T.); (L.C.S.H.)
| | - Mayerlin Sandoval-Herazo
- Department of Business Management Engineering, Tecnológico Nacional de México/Instituto Tecnológico de Misantla, Veracruz, Km 1.8 Carretera a Loma del Cojolite, Misantla 93821, Veracruz, Mexico;
| | - Monserrat Vidal-Álvarez
- Academy of Sustainable Regional Development, El Colegio de Veracruz, Xalapa 91000, Veracruz, Mexico;
- Correspondence: (M.V.-Á.); (J.L.M.-M.); Tel.: +52-2-281-261-814 (M.V.-Á.); +52-2-281-624-680 (J.L.M.-M.)
| | - José Luis Marín-Muñiz
- Academy of Sustainable Regional Development, El Colegio de Veracruz, Xalapa 91000, Veracruz, Mexico;
- Correspondence: (M.V.-Á.); (J.L.M.-M.); Tel.: +52-2-281-261-814 (M.V.-Á.); +52-2-281-624-680 (J.L.M.-M.)
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Conlisk EE, Golet GH, Reynolds MD, Barbaree BA, Sesser KA, Byrd KB, Veloz S, Reiter ME. Both real-time and long-term environmental data perform well in predicting shorebird distributions in managed habitat. Ecol Appl 2022; 32:e2510. [PMID: 34870360 PMCID: PMC9286402 DOI: 10.1002/eap.2510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 05/05/2021] [Accepted: 07/09/2021] [Indexed: 06/13/2023]
Abstract
Highly mobile species, such as migratory birds, respond to seasonal and interannual variability in resource availability by moving to better habitats. Despite the recognized importance of resource thresholds, species-distribution models typically rely on long-term average habitat conditions, mostly because large-extent, temporally resolved, environmental data are difficult to obtain. Recent advances in remote sensing make it possible to incorporate more frequent measurements of changing landscapes; however, there is often a cost in terms of model building and processing and the added value of such efforts is unknown. Our study tests whether incorporating real-time environmental data increases the predictive ability of distribution models, relative to using long-term average data. We developed and compared distribution models for shorebirds in California's Central Valley based on high temporal resolution (every 16 days), and 17-year long-term average surface water data. Using abundance-weighted boosted regression trees, we modeled monthly shorebird occurrence as a function of surface water availability, crop type, wetland type, road density, temperature, and bird data source. Although modeling with both real-time and long-term average data provided good fit to withheld validation data (the area under the receiver operating characteristic curve, or AUC, averaged between 0.79 and 0.89 for all taxa), there were small differences in model performance. The best models incorporated long-term average conditions and spatial pattern information for real-time flooding (e.g., perimeter-area ratio of real-time water bodies). There was not a substantial difference in the performance of real-time and long-term average data models within time periods when real-time surface water differed substantially from the long-term average (specifically during drought years 2013-2016) and in intermittently flooded months or locations. Spatial predictions resulting from the models differed most in the southern region of the study area where there is lower water availability, fewer birds, and lower sampling density. Prediction uncertainty in the southern region of the study area highlights the need for increased sampling in this area. Because both sets of data performed similarly, the choice of which data to use may depend on the management context. Real-time data may ultimately be best for guiding dynamic, adaptive conservation actions, whereas models based on long-term averages may be more helpful for guiding permanent wetland protection and restoration.
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Affiliation(s)
| | | | | | | | | | - Kristin B. Byrd
- U.S. Geological Survey, Western Geographic Science CenterMoffett FieldCaliforniaUSA
| | - Sam Veloz
- Point Blue Conservation SciencePetalumaCaliforniaUSA
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Müller-Theissen ML, Azziz-Baumgartner E, Ortiz L, Szablewski CM, Alvarez D, Gonzalez-Reiche AS, Jara J, Davis CT, Cordon-Rosales C. Influenza A virus circulation in backyard animals in the Pacific coast of Guatemala, 2013-2014. Zoonoses Public Health 2022; 69:826-834. [PMID: 35611690 DOI: 10.1111/zph.12972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 03/18/2022] [Accepted: 04/30/2022] [Indexed: 11/30/2022]
Abstract
Due to their documented epidemiological relevance as hosts for influenza A viruses (IAV), humans, poultry and pigs in backyard production systems (BPS) within wetlands could be key to the emergence of novel IAV variants able to transmit between humans or animals. To better understand the circulation of IAV at the human-animal interface of BPS within wetlands, we studied IAV in backyard duck flocks and pig herds in the Pacific Coast of Guatemala. From April 2013 to October 2014, we estimated the monthly IAV per cent seropositive and viral positive flocks and herds in two resource-limited communities. We detected antibodies in sera against the IAV nucleoprotein through ELISA. We also detected IAV viral RNA in respiratory (ducks and pigs) and cloacal (ducks) swabs through rRT-PCR directed at the matrix gene. We attempted viral isolation in eggs or MDCK cells followed by sequencing from swabs positive for IAV. During our study period, IAV seropositivity in duck flocks was 38%, and viral positivity was 23% (n = 86 BPS sampled). IAV seropositivity in pig herds was 42%, and viral positivity was 20% (n = 90 BPS sampled). Both flocks and herds had detectable antibodies against IAV mostly year-round, and IAV was detected in several months. We isolated an H3N2 virus from one pig sampled at the end of 2013. Standard nucleotide BLAST searches indicate that the isolated virus was similar to seasonal viruses circulating in humans, suggesting human-to-pig transmission. Our data show concurrent circulation of IAV in multiple species of poultry and pigs that were commingled in rudimentary conditions in proximity to humans, but no significant risk factors could be identified.
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Affiliation(s)
| | - Eduardo Azziz-Baumgartner
- Influenza Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Lucia Ortiz
- Centro de Estudios en Salud, Universidad del Valle de Guatemala, Guatemala, Guatemala
| | - Christine M Szablewski
- Influenza Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Danilo Alvarez
- Centro de Estudios en Salud, Universidad del Valle de Guatemala, Guatemala, Guatemala
| | - Ana S Gonzalez-Reiche
- Centro de Estudios en Salud, Universidad del Valle de Guatemala, Guatemala, Guatemala
| | - Jorge Jara
- Centro de Estudios en Salud, Universidad del Valle de Guatemala, Guatemala, Guatemala
| | - C Todd Davis
- Influenza Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Celia Cordon-Rosales
- Centro de Estudios en Salud, Universidad del Valle de Guatemala, Guatemala, Guatemala
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50
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Brullo S, Brullo C, Sciandrello S, Tavilla G, Cambria S, Tomaselli V, Ilardi V, Giusso del Galdo G, Minissale P. The Plant Communities of the Class Isoëto-Nanojuncetea in Sicily. Plants (Basel) 2022; 11:plants11091214. [PMID: 35567216 PMCID: PMC9104982 DOI: 10.3390/plants11091214] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 04/21/2022] [Accepted: 04/26/2022] [Indexed: 05/27/2023]
Abstract
A syntaxonomical revision of the Isoëto-Nanojuncetea class for the Sicilian territory is provided. This syntaxon gathers the ephemeral herbaceous hygrophilous plant communities linked to periodically submerged soils, widely distributed in the European, circum-Mediterranean and Macaronesian territories. Within this class, two orders are recognized, lsoëtetalia, with a prevalently Mediterranean distribution, and Nanocyperetalia chiefly occurring in the central-European and Atlantic territories, with scattered and marginal occurrence in the Mediterranean area. The order Isoëtetalia in Sicily is represented by four alliances, i.e., Isoëtion, Preslion cervinae, Cicendio-Solenopsion laurentiae and Agrostion salmanticae, while within Nanocyperetalia three alliances can be recognized, namely Nanocyperion, Verbenion supinae and Lythrion tribracteati. Overall, 32 plant communities are recognized, 11 of which are described for the first time. Each higher rank syntaxa and related associations are examined from a nomenclatural, floristic, ecological and chorological point of view. In particular, the associations were processed using cluster analysis in order to highlight the correlations between them. Regarding the floristic aspects, a checklist of the species occurring in the phytosociological relevés is provided, as well as a new combination concerning Solenopsis gasparrinii, a critical species of the Sicilian flora, is proposed.
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Affiliation(s)
- Salvatore Brullo
- Department of Biological, Geological and Environmental Sciences, University of Catania, Via A. Longo 19, 95125 Catania, Italy; (S.B.); (C.B.); (S.S.); (G.T.); (S.C.); (G.G.d.G.)
| | - Cristian Brullo
- Department of Biological, Geological and Environmental Sciences, University of Catania, Via A. Longo 19, 95125 Catania, Italy; (S.B.); (C.B.); (S.S.); (G.T.); (S.C.); (G.G.d.G.)
| | - Saverio Sciandrello
- Department of Biological, Geological and Environmental Sciences, University of Catania, Via A. Longo 19, 95125 Catania, Italy; (S.B.); (C.B.); (S.S.); (G.T.); (S.C.); (G.G.d.G.)
| | - Gianmarco Tavilla
- Department of Biological, Geological and Environmental Sciences, University of Catania, Via A. Longo 19, 95125 Catania, Italy; (S.B.); (C.B.); (S.S.); (G.T.); (S.C.); (G.G.d.G.)
| | - Salvatore Cambria
- Department of Biological, Geological and Environmental Sciences, University of Catania, Via A. Longo 19, 95125 Catania, Italy; (S.B.); (C.B.); (S.S.); (G.T.); (S.C.); (G.G.d.G.)
| | - Valeria Tomaselli
- Department of Biology, University of Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy;
| | - Vincenzo Ilardi
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale Delle Scienze, ed. 17, 90128 Palermo, Italy;
| | - Gianpietro Giusso del Galdo
- Department of Biological, Geological and Environmental Sciences, University of Catania, Via A. Longo 19, 95125 Catania, Italy; (S.B.); (C.B.); (S.S.); (G.T.); (S.C.); (G.G.d.G.)
| | - Pietro Minissale
- Department of Biological, Geological and Environmental Sciences, University of Catania, Via A. Longo 19, 95125 Catania, Italy; (S.B.); (C.B.); (S.S.); (G.T.); (S.C.); (G.G.d.G.)
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