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Vergara-Diaz O, Velasco-Serrano E, Invernón-Garrido A, Katamadze A, Yoldi-Achalandabaso A, Serret MD, Vicente R. Quinoa panicles contribute to carbon assimilation and are more tolerant to salt stress than leaves. J Plant Physiol 2024; 292:154161. [PMID: 38142485 DOI: 10.1016/j.jplph.2023.154161] [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: 08/02/2023] [Revised: 11/20/2023] [Accepted: 12/08/2023] [Indexed: 12/26/2023]
Abstract
Contribution of inflorescences to seed filling have attracted great attention given the resilience of this photosynthetic organ to stressful conditions. However, studies have been almost exclusively focused to small grain cereals. In this study, we aimed to explore these responses in quinoa, as a climate resilient seed crop of elevated economic and nutritious potential. We compared the physiological and metabolic performance of panicles and leaves of two quinoa cultivars growing under contrasting salinity levels. Plant growth, photosynthetic and transpiratory gas exchange and chlorophyll fluorescence were monitored in inflorescences and leaves throughout the experiment. At flowering stage, young and mature leaves and panicles were sampled for key metabolic markers related to carbon, nitrogen and secondary metabolisms. When subjected to salt stress, panicles showed attenuated declines on photosynthesis, water use, pigments, amino acids, and protein levels as compared to leaves. In fact, the assimilation rates, together with a high hexose content evidenced an active photosynthetic role of the panicle under optimal and salt stress conditions. Moreover, we also found significant genotypic variability for physiological and metabolic traits of panicles and leaves, which emphasizes the study of genotype-dependent stress responses at the whole plant level. We conclude that quinoa panicles are less affected by salt stress than leaves, which encourages further research and exploitation of this organ for crop improvement and stress resilience considering the high natural diversity.
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Affiliation(s)
- Omar Vergara-Diaz
- Plant Ecophysiology and Metabolism Group, Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB NOVA), 2780-157, Oeiras, Portugal.
| | - Elena Velasco-Serrano
- Integrative Crop Ecophysiology Group, Section of Plant Physiology, Faculty of Biology, University of Barcelona, 08028, Barcelona, Spain; AGROTECNIO-CERCA Center, 25198, Lleida, Spain.
| | - Alicia Invernón-Garrido
- Integrative Crop Ecophysiology Group, Section of Plant Physiology, Faculty of Biology, University of Barcelona, 08028, Barcelona, Spain; AGROTECNIO-CERCA Center, 25198, Lleida, Spain.
| | - Artūrs Katamadze
- Plant Ecophysiology and Metabolism Group, Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB NOVA), 2780-157, Oeiras, Portugal.
| | - Ander Yoldi-Achalandabaso
- Plant Ecophysiology and Metabolism Group, Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB NOVA), 2780-157, Oeiras, Portugal; FisioClimaCO(2) Group, Department of Plant Biology and Ecology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), 48080, Bilbao, Spain.
| | - Maria Dolores Serret
- Integrative Crop Ecophysiology Group, Section of Plant Physiology, Faculty of Biology, University of Barcelona, 08028, Barcelona, Spain; AGROTECNIO-CERCA Center, 25198, Lleida, Spain.
| | - Rubén Vicente
- Plant Ecophysiology and Metabolism Group, Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB NOVA), 2780-157, Oeiras, Portugal.
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Morcillo L, Turrión D, Fuentes D, Vilagrosa A. Drone-based assessment of microsite-scale hydrological processes promoted by restoration actions in early post-mining ecological restoration stages. J Environ Manage 2023; 348:119468. [PMID: 37931436 DOI: 10.1016/j.jenvman.2023.119468] [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: 06/14/2023] [Revised: 10/11/2023] [Accepted: 10/24/2023] [Indexed: 11/08/2023]
Abstract
A successful choice of post-mining restoration activities in dry climates may depend on relevant features related to topographic characteristics, hydrological processes and vegetation development, which will determine functional recovery in these ecosystems. The combination of different restoration techniques to reestablish vegetation, such as sowing and plantation, implies the interspersion of bare-soil areas with vegetated areas in early plant development stages, which may result in an associated mosaic of hydrologic functioning. In this study, we conducted a drone-based assessment to disentangle the role played by microsite-scale hydrological processes (i.e., planting hole slope, sink volume capacity, individual catchment area, Flow Length Index) promoted by restoration actions in soil protection and vegetation development on the hillside scale. Based on two contrasting restoration scenarios (Steep hillside and Smooth hillside), the different applied restoration treatments conditioned the microtopographic processes on the planting hole scale and, therefore, resource redistribution. The main results showed higher planting hole functionality on the smooth hillsides than on steep hillside, which resulted in greater water availability and bigger vegetation patches. By addressing the role of hydrological processes on the microsite scale, our study contributes substantially to prior knowledge on the relevant factors for ecosystem development and post-mining restoration success. It also demonstrates that high-resolution drone images can be a very useful tool for monitoring restoration actions, especially in large, inaccessible and unstable restored areas.
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Affiliation(s)
- Luna Morcillo
- Mediterranean Center for Environmental Studies (CEAM Foundation). Joint Research Unit University of Alicante-CEAM, University of Alicante, 03690, Sant Vicent del Raspeig, Alicante, Spain.
| | - Diana Turrión
- Mediterranean Center for Environmental Studies (CEAM Foundation). Joint Research Unit University of Alicante-CEAM, University of Alicante, 03690, Sant Vicent del Raspeig, Alicante, Spain; Department of Ecology, University of Alicante, 03690, Sant Vicent del Raspeig, Alicante, Spain
| | - David Fuentes
- Department of Ecology, University of Alicante, 03690, Sant Vicent del Raspeig, Alicante, Spain; Ecodrone Works, 03550, Sant Joan d'Alacant, Alicante, Spain
| | - Alberto Vilagrosa
- Mediterranean Center for Environmental Studies (CEAM Foundation). Joint Research Unit University of Alicante-CEAM, University of Alicante, 03690, Sant Vicent del Raspeig, Alicante, Spain; Department of Ecology, University of Alicante, 03690, Sant Vicent del Raspeig, Alicante, Spain
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Whitaker BK, Giauque H, Timmerman C, Birk N, Hawkes CV. Local Plants, Not Soils, Are the Primary Source of Foliar Fungal Community Assembly in a C4 Grass. Microb Ecol 2022; 84:122-130. [PMID: 34405252 DOI: 10.1007/s00248-021-01836-2] [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: 02/25/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
Microbial communities, like their macro-organismal counterparts, assemble from multiple source populations and by processes acting at multiple spatial scales. However, the relative importance of different sources to the plant microbiome and the spatial scale at which assembly occurs remains debated. In this study, we analyzed how source contributions to the foliar fungal microbiome of a C4 grass differed between locally abundant plants and soils across an abiotic gradient at different spatial scales. Specifically, we used source-sink analysis to assess the likelihood that fungi in leaves from Panicum hallii came from three putative sources: two plant functional groups (C4 grasses and dicots) and soil. We expected that physiologically similar C4 grasses would be more important sources to P. hallii than dicots. We tested this at ten sites in central Texas spanning a steep precipitation gradient. We also examined source contributions at three spatial scales: individual sites (local), local plus adjacent sites (regional), or all sites (gradient-wide). We found that plants were substantially more important sources than soils, but contributions from the two plant functional groups were similar. Plant contributions overall declined and unexplained variation increased as mean annual precipitation increased. This source-sink analysis, combined with partitioning of beta-diversity into nestedness and turnover components, indicated high dispersal limitation and/or strong environmental filtering. Overall, our results suggest that the source-sink dynamics of foliar fungi are primarily local, that foliar fungi spread from plant-to-plant, and that the abiotic environment may affect fungal community sourcing both directly and via changes to host plant communities.
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Affiliation(s)
- Briana K Whitaker
- Department of Plant and Microbial Biology, North Carolina State University, 112 Derieux Place, Raleigh, NC, 27607, USA
- USDA, Agricultural Research Service, National Center for Agricultural Utilization Research, Mycotoxin Prevention & Applied Microbiology Unit, 1815 N University St, Peoria, IL, 61604, USA
| | - Hannah Giauque
- Department of Integrative Biology, University of Texas Austin, Austin, TX, USA
| | - Corey Timmerman
- Department of Integrative Biology, University of Texas Austin, Austin, TX, USA
| | - Nicolas Birk
- Department of Integrative Biology, University of Texas Austin, Austin, TX, USA
| | - Christine V Hawkes
- Department of Plant and Microbial Biology, North Carolina State University, 112 Derieux Place, Raleigh, NC, 27607, USA.
- Department of Integrative Biology, University of Texas Austin, Austin, TX, USA.
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McFarland K, Rumbold D, Loh AN, Haynes L, Tolley SG, Gorman P, Welch B, Goodman P, Barnes TK, Doering PH, Soudant P, Volety AK. Effects of freshwater release on oyster reef density, reproduction, and disease in a highly modified estuary. Environ Monit Assess 2022; 194:96. [PMID: 35029759 DOI: 10.1007/s10661-021-09489-x] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 09/22/2021] [Indexed: 06/14/2023]
Abstract
Few estuaries remain unaffected by water management and altered freshwater deliveries. The Caloosahatchee River Estuary is a perfect case study for assessing the impact of altered hydrology on natural oyster reef (Crassostrea virginica) populations. The watershed has been highly modified and greatly enlarged by an artificial connection to Lake Okeechobee. Accordingly, to generate data to support water management recommendations, this study monitored various oyster biometrics over 15 years along the primary salinity gradient. Oyster reef densities were significantly affected by both prolonged high volume freshwater releases creating hyposaline conditions at upstream sites and by a lack of freshwater input creating hypersaline conditions at downstream sites. Low freshwater input led to an increase in disease caused by Perkinsus marinus and predation. Moderate (< 2000 cfs) and properly timed (winter/spring) freshets benefited oysters with increased gametogenesis, good larval mixing, and a reprieve from disease. If high volume freshets occurred in the late summer, extensive mortality occurred at the upstream site due to low salinity. These findings suggest freshwater releases in the late summer, when reproductive stress is at its peak and pelagic larvae are most vulnerable, should be limited to < 2000 cfs, but that longer freshets (1-3 weeks) in the winter and early spring (e.g., December-April) benefit oysters by reducing salinity and lessening disease intensity. Similar strategies can be employed in other managed systems, and patterns regarding the timing of high volume flows are applicable to all estuaries where the management of healthy oyster reefs is a priority.
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Affiliation(s)
- Katherine McFarland
- FGCU Boulevard, Vester Marine Field Station and Coastal Watershed Institute, Florida Gulf Coast University, 10501, Fort Myers, FL, 33965, USA.
- NOAA Fisheries NEFSC, Milford Laboratory, CT, Milford, 06460, USA.
| | - Darren Rumbold
- FGCU Boulevard, Vester Marine Field Station and Coastal Watershed Institute, Florida Gulf Coast University, 10501, Fort Myers, FL, 33965, USA
| | - Ai Ning Loh
- FGCU Boulevard, Vester Marine Field Station and Coastal Watershed Institute, Florida Gulf Coast University, 10501, Fort Myers, FL, 33965, USA
- Department of Biology and Marine Biology, University of North Carolina, Wilmington 601 South College Rd, Wilmington, NC, 28403, USA
| | - Lesli Haynes
- FGCU Boulevard, Vester Marine Field Station and Coastal Watershed Institute, Florida Gulf Coast University, 10501, Fort Myers, FL, 33965, USA
- Lee County Natural Resources - Marine Services, 1500 Monroe St. Ft, Myers, FL, 33965, USA
| | - S Gregory Tolley
- FGCU Boulevard, Vester Marine Field Station and Coastal Watershed Institute, Florida Gulf Coast University, 10501, Fort Myers, FL, 33965, USA
| | - Patricia Gorman
- South Florida Water Management District, 3301 Gun Club Road, West Palm Beach, FL, 33406, USA
| | - Barbara Welch
- South Florida Water Management District, 3301 Gun Club Road, West Palm Beach, FL, 33406, USA
| | - Patricia Goodman
- FGCU Boulevard, Vester Marine Field Station and Coastal Watershed Institute, Florida Gulf Coast University, 10501, Fort Myers, FL, 33965, USA
- United States Army Installation Management Command DPW - Presidio of Monterey, B4463 Gigling Rd, Seaside, CA, 93955, USA
| | - Tomma K Barnes
- NOAA National Ocean Service National Centers for Coastal Ocean Science, 101 Pivers Island Rd, Beaufort, NC, 28516, USA
| | - Peter H Doering
- South Florida Water Management District, 3301 Gun Club Road, West Palm Beach, FL, 33406, USA
| | - Philippe Soudant
- Université de Brest, UBO, CNRS, IRD, Institut Universitaire Européen de La Mer, LEMAR, Rue Dumont d'Urville, Plouzané, France
| | - Aswani K Volety
- FGCU Boulevard, Vester Marine Field Station and Coastal Watershed Institute, Florida Gulf Coast University, 10501, Fort Myers, FL, 33965, USA
- Department of Biology and Marine Biology, University of North Carolina, Wilmington 601 South College Rd, Wilmington, NC, 28403, USA
- Elon University Alamance Building 120C, 2200 Campus Box, Elon, NC, 27244, USA
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Lewis G, Dinter A, Elston C, Marx MT, Mayer CJ, Neumann P, Pilling E, Braaker S. The Role of Source-Sink Dynamics in the Assessment of Risk to Nontarget Arthropods from the Use of Plant Protection Products. Environ Toxicol Chem 2021; 40:2667-2679. [PMID: 34111321 PMCID: PMC9291833 DOI: 10.1002/etc.5137] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/14/2021] [Accepted: 06/04/2021] [Indexed: 06/12/2023]
Abstract
The concept of source-sink dynamics as a potentially important component of metapopulation dynamics was introduced in the 1980s. The objective of the present review was to review the considerable body of work that has been developed, to consider its theoretical implications as well as to understand how source-sink dynamics may manifest under field conditions in the specific case of nontarget arthropods in the agricultural environment. Our review concludes that metapopulation dynamics based on field observations are often far more complex than existing theoretical source-sink models would indicate, because they are dependent on numerous population processes and influencing factors. The difficulty in identifying and measuring these factors likely explains why empirical studies assessing source-sink dynamics are scarce. Furthermore, we highlight the importance of considering the spatial and temporal heterogeneity of agricultural landscapes when assessing the population dynamics of nontarget arthropods in the context of the risk from the use of plant protection products. A need is identified to further develop and thoroughly validate predictive population models, which can incorporate all factors relevant to a specific system. Once reliable predictive models for a number of representative nontarget arthropod species are available, they could provide a meaningful tool for refined risk evaluations (higher tier level risk assessment), addressing specific concerns identified at the initial evaluation stages (lower tier level risk assessment). Environ Toxicol Chem 2021;40:2667-2679. © 2021 ERM, FMC, Syngenta, Bayer AG, BASF SE, Corteva agriscience. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
| | | | | | | | | | | | - Ed Pilling
- Corteva AgrisciencesAbingdonOxfordshireUnited Kingdom
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Arino J, Bajeux N, Kirkland S. Number of Source Patches Required for Population Persistence in a Source-Sink Metapopulation with Explicit Movement. Bull Math Biol 2019; 81:1916-1942. [PMID: 30847643 DOI: 10.1007/s11538-019-00593-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 02/26/2019] [Indexed: 11/27/2022]
Abstract
We consider a simple metapopulation model with explicit movement of individuals between patches, in which each patch is either a source or a sink. We prove that similarly to the case of patch occupancy metapopulations with implicit movement, there exists a threshold number of source patches such that the population potentially becomes extinct below the threshold and established above the threshold. In the case where the matrix describing the movement of populations between spatial locations is irreducible, the result is global; further, assuming a complete mobility graph with equal movement rates, we use the principle of equitable partitions to obtain an explicit expression for the threshold. Brief numerical considerations follow.
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Affiliation(s)
- Julien Arino
- Department of Mathematics, University of Manitoba, Winnipeg, MB, Canada.
| | - Nicolas Bajeux
- Department of Mathematics, University of Manitoba, Winnipeg, MB, Canada
- Université Côte d'Azur, Inria BIOCORE Team, INRA, Sophia Antipolis, France
| | - Steve Kirkland
- Department of Mathematics, University of Manitoba, Winnipeg, MB, Canada
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Topping CJ, Craig PS, de Jong F, Klein M, Laskowski R, Manachini B, Pieper S, Smith R, Sousa JP, Streissl F, Swarowsky K, Tiktak A, van der Linden T. Towards a landscape scale management of pesticides: ERA using changes in modelled occupancy and abundance to assess long-term population impacts of pesticides. Sci Total Environ 2015; 537:159-69. [PMID: 26318547 DOI: 10.1016/j.scitotenv.2015.07.152] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [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: 06/30/2015] [Revised: 07/30/2015] [Accepted: 07/30/2015] [Indexed: 05/25/2023]
Abstract
Pesticides are regulated in Europe and this process includes an environmental risk assessment (ERA) for non-target arthropods (NTA). Traditionally a non-spatial or field trial assessment is used. In this study we exemplify the introduction of a spatial context to the ERA as well as suggest a way in which the results of complex models, necessary for proper inclusion of spatial aspects in the ERA, can be presented and evaluated easily using abundance and occupancy ratios (AOR). We used an agent-based simulation system and an existing model for a widespread carabid beetle (Bembidion lampros), to evaluate the impact of a fictitious highly-toxic pesticide on population density and the distribution of beetles in time and space. Landscape structure and field margin management were evaluated by comparing scenario-based ERAs for the beetle. Source-sink dynamics led to an off-crop impact even when no pesticide was present off-crop. In addition, the impacts increased with multi-year application of the pesticide whereas current ERA considers only maximally one year. These results further indicated a complex interaction between landscape structure and pesticide effect in time, both in-crop and off-crop, indicating the need for NTA ERA to be conducted at landscape- and multi-season temporal-scales. Use of AOR indices to compare ERA outputs facilitated easy comparison of scenarios, allowing simultaneous evaluation of impacts and planning of mitigation measures. The landscape and population ERA approach also demonstrates that there is a potential to change from regulation of a pesticide in isolation, towards the consideration of pesticide management at landscape scales and provision of biodiversity benefits via inclusion and testing of mitigation measures in authorisation procedures.
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Affiliation(s)
- Chris J Topping
- Department of Bioscience, Århus University, Grenåvej 14, 8410 Rønde, Denmark
| | - Peter S Craig
- Department of Mathematical Sciences, Durham University, South Road, Durham DH1 3LE, United Kingdom
| | - Frank de Jong
- National Institute for Public Health and the Environment (RIVM), PO BOX 1, 3720 AA Bilthoven, The Netherlands
| | - Michael Klein
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Auf dem Aberg 1, 57392 Schmallenberg, Germany
| | - Ryszard Laskowski
- Institute of Environmental Sciences, Jagiellonian University, Gronostajowa 7, 30-387 Kraków, Poland
| | - Barbara Manachini
- Department STEBICEF, Palermo University, Via Archirafi, 18., 90123 Palermo, Italy
| | - Silvia Pieper
- German Federal Environment Agency (UBA), Wörlitzer Platz 1, D-06844 Dessau-Roßlau, Germany
| | - Rob Smith
- School of Applied Sciences, University of Huddersfield, Huddersfield HD1 3DH, United Kingdom
| | - José Paulo Sousa
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, P3000-456 Coimbra, Portugal
| | - Franz Streissl
- European Food Safety Agency (EFSA), Via Carlo Magno 1, 43100 Parma, Italy
| | - Klaus Swarowsky
- German Federal Environment Agency (UBA), Wörlitzer Platz 1, D-06844 Dessau-Roßlau, Germany
| | - Aaldrik Tiktak
- PBL Netherlands Environmental Assessment Agency, PO BOX 303, 3720 AH Bilthoven, The Netherlands
| | - Ton van der Linden
- National Institute for Public Health and the Environment (RIVM), PO BOX 1, 3720 AA Bilthoven, The Netherlands
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Vansteenbrugge L, Ampe B, De Troch M, Vincx M, Hostens K. On the distribution and population dynamics of the ctenophore Mnemiopsis leidyi in the Belgian part of the North Sea and Westerschelde estuary. Mar Environ Res 2015; 110:33-44. [PMID: 26263834 DOI: 10.1016/j.marenvres.2015.07.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 04/21/2015] [Revised: 07/21/2015] [Accepted: 07/22/2015] [Indexed: 06/04/2023]
Abstract
The spatio-temporal distribution and population dynamics of the non-indigenous ctenophore Mnemiopsis leidyi A. Agassiz 1865 were investigated through monthly and quarterly surveys in 2011-2012 at several locations in the Belgian part of the North Sea, the main coastal ports and the adjacent Westerschelde estuary. M. leidyi occurred from August to December, but was never found more than 30 km offshore. Densities were generally low (average 0.8 ± SD 2.8 ind m(-3)) compared to other invaded European systems. Highest densities of M. leidyi were found in the semi-enclosed basin (port of Oostende; 18.4 ind m(-3)) and Westerschelde estuary (1.9 ind m(-3)). The presence of larvae and sudden appearance of high numbers across the size distribution in August indicated that ports and estuaries may act as sources, populating the adjacent coastal area. The zero-inflated logistic regression model showed that there is a higher chance of finding M. leidyi (presence) when temperature declines from late summer onwards. Combined with a negative binomial regression, our model suggests that increasing M. leidyi densities are associated with decreasing autumn temperatures, low wave height (low energetic systems) and low dissolved oxygen concentrations Although densities remained relatively low since its first appearance in 2007, a permanent population seems to be established in Belgian waters. As population outbursts may occur with only a small change in environmental parameters, further monitoring of this notorious invasive species is recommended.
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Affiliation(s)
- Lies Vansteenbrugge
- Institute for Agricultural and Fisheries Research (ILVO), Animal Sciences Unit, Ankerstraat 1, 8400 Oostende, Belgium; Ghent University (UGent), Biology Departement, Marine Biology Section, Sterre Campus, Krijgslaan 281, S8, 9000 Gent, Belgium.
| | - Bart Ampe
- Institute for Agricultural and Fisheries Research (ILVO), Animal Sciences Unit, Scheldeweg 68, 9090 Melle, Belgium.
| | - Marleen De Troch
- Ghent University (UGent), Biology Departement, Marine Biology Section, Sterre Campus, Krijgslaan 281, S8, 9000 Gent, Belgium.
| | - Magda Vincx
- Ghent University (UGent), Biology Departement, Marine Biology Section, Sterre Campus, Krijgslaan 281, S8, 9000 Gent, Belgium.
| | - Kris Hostens
- Institute for Agricultural and Fisheries Research (ILVO), Animal Sciences Unit, Ankerstraat 1, 8400 Oostende, Belgium.
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Lax S, Hampton-Marcell JT, Gibbons SM, Colares GB, Smith D, Eisen JA, Gilbert JA. Forensic analysis of the microbiome of phones and shoes. Microbiome 2015; 3:21. [PMID: 25969737 PMCID: PMC4427962 DOI: 10.1186/s40168-015-0082-9] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 04/03/2015] [Indexed: 05/21/2023]
Abstract
BACKGROUND Microbial interaction between human-associated objects and the environments we inhabit may have forensic implications, and the extent to which microbes are shared between individuals inhabiting the same space may be relevant to human health and disease transmission. In this study, two participants sampled the front and back of their cell phones, four different locations on the soles of their shoes, and the floor beneath them every waking hour over a 2-day period. A further 89 participants took individual samples of their shoes and phones at three different scientific conferences. RESULTS Samples taken from different surface types maintained significantly different microbial community structures. The impact of the floor microbial community on that of the shoe environments was strong and immediate, as evidenced by Procrustes analysis of shoe replicates and significant correlation between shoe and floor samples taken at the same time point. Supervised learning was highly effective at determining which participant had taken a given shoe or phone sample, and a Bayesian method was able to determine which participant had taken each shoe sample based entirely on its similarity to the floor samples. Both shoe and phone samples taken by conference participants clustered into distinct groups based on location, though much more so when an unweighted distance metric was used, suggesting sharing of low-abundance microbial taxa between individuals inhabiting the same space. CONCLUSIONS Correlations between microbial community sources and sinks allow for inference of the interactions between humans and their environment.
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Affiliation(s)
- Simon Lax
- />Institute for Genomics and Systems Biology, Biosciences Department, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 USA
- />Department of Ecology and Evolution, University of Chicago, 1101 E 57th Street, Chicago, IL 60637 USA
| | - Jarrad T Hampton-Marcell
- />Institute for Genomics and Systems Biology, Biosciences Department, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 USA
| | - Sean M Gibbons
- />Institute for Genomics and Systems Biology, Biosciences Department, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 USA
- />Graduate Program in Biophysical Sciences, University of Chicago, 5801 South Ellis Avenue, Chicago, USA
| | - Geórgia Barguil Colares
- />Departamento de Biologia, Universidade Federal do Ceará, Avenida da Universidade, 2853 - Benfica, Fortaleza, CE 60440-900 Brazil
| | - Daniel Smith
- />Institute for Genomics and Systems Biology, Biosciences Department, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 USA
- />Alkek Center for Metagenomics and Microbiome Research, Department of Molecular Virology and Microbiology, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX 77030 USA
| | - Jonathan A Eisen
- />Department of Evolution and Ecology, University of California, 1544 Newton Ct, Davis, CA USA
- />Department of Medical Microbiology and Immunology, University of California, 1544 Newton Ct, Davis, CA USA
- />UC Davis Genome Center, University of California, 1 Shields Avenue, Davis, CA USA
| | - Jack A Gilbert
- />Institute for Genomics and Systems Biology, Biosciences Department, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 USA
- />Department of Ecology and Evolution, University of Chicago, 1101 E 57th Street, Chicago, IL 60637 USA
- />Graduate Program in Biophysical Sciences, University of Chicago, 5801 South Ellis Avenue, Chicago, USA
- />Marine Biological Laboratory, 7 MBL Street, Woods Hole, MA 02543 USA
- />College of Environmental and Resource Sciences, Zhejiang University, 38 Zheda Road, Hangzhou, 310058 China
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