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Coulson SJ, Convey P, Schuuring S, Lang SI. Interactions between winter temperatures and duration of exposure may structure Arctic microarthropod communities. J Therm Biol 2023. [DOI: 10.1016/j.jtherbio.2023.103499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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2
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Krab EJ, Lundin EJ, Coulson SJ, Dorrepaal E, Cooper EJ. Experimentally increased snow depth affects high Arctic microarthropods inconsistently over two consecutive winters. Sci Rep 2022; 12:18049. [PMID: 36302819 PMCID: PMC9613649 DOI: 10.1038/s41598-022-22591-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 10/17/2022] [Indexed: 01/24/2023] Open
Abstract
Climate change induced alterations to winter conditions may affect decomposer organisms controlling the vast carbon stores in northern soils. Soil microarthropods are particularly abundant decomposers in Arctic ecosystems. We studied whether increased snow depth affected microarthropods, and if effects were consistent over two consecutive winters. We sampled Collembola and soil mites from a snow accumulation experiment at Svalbard in early summer and used soil microclimatic data to explore to which aspects of winter climate microarthropods are most sensitive. Community densities differed substantially between years and increased snow depth had inconsistent effects. Deeper snow hardly affected microarthropods in 2015, but decreased densities and altered relative abundances of microarthropods and Collembola species after a milder winter in 2016. Although increased snow depth increased soil temperatures by 3.2 °C throughout the snow cover periods, the best microclimatic predictors of microarthropod density changes were spring soil temperature and snowmelt day. Our study shows that extrapolation of observations of decomposer responses to altered winter climate conditions to future scenarios should be avoided when communities are only sampled on a single occasion, since effects of longer-term gradual changes in winter climate may be obscured by inter-annual weather variability and natural variability in population sizes.
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Affiliation(s)
- Eveline J. Krab
- grid.6341.00000 0000 8578 2742Department of Soil and Environment, Swedish University of Agricultural Sciences, 75007 Uppsala, Sweden ,grid.12650.300000 0001 1034 3451Department of Ecology and Environmental Science, Climate Impacts Research Centre, Umeå University, 98107 Abisko, Sweden
| | - Erik J. Lundin
- grid.417583.c0000 0001 1287 0220Swedish Polar Research Secretariat, Abisko Scientific Research Station, 98107 Abisko, Sweden
| | - Stephen J. Coulson
- grid.6341.00000 0000 8578 2742SLU Swedish Species Information Centre, Swedish University of Agricultural Sciences, 75007 Uppsala, Sweden ,grid.20898.3b0000 0004 0428 2244Department of Arctic Biology, University Centre in Svalbard, PO Box 156, 9171 Longyearbyen, Norway
| | - Ellen Dorrepaal
- grid.12650.300000 0001 1034 3451Department of Ecology and Environmental Science, Climate Impacts Research Centre, Umeå University, 98107 Abisko, Sweden
| | - Elisabeth J. Cooper
- grid.10919.300000000122595234Department of Arctic and Marine Biology, Faculty of Biosciences Fisheries and Economics, UiT-The Arctic University of Norway, 9037 Tromsø, Norway
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3
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Koltz AM, Gough L, McLaren JR. Herbivores in Arctic ecosystems: Effects of climate change and implications for carbon and nutrient cycling. Ann N Y Acad Sci 2022; 1516:28-47. [PMID: 35881516 PMCID: PMC9796801 DOI: 10.1111/nyas.14863] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Arctic terrestrial herbivores influence tundra carbon and nutrient dynamics through their consumption of resources, waste production, and habitat-modifying behaviors. The strength of these effects is likely to change spatially and temporally as climate change drives shifts in herbivore abundance, distribution, and activity timing. Here, we review how herbivores influence tundra carbon and nutrient dynamics through their consumptive and nonconsumptive effects. We also present evidence for herbivore responses to climate change and discuss how these responses may alter the spatial and temporal distribution of herbivore impacts. Several current knowledge gaps limit our understanding of the changing functional roles of herbivores; these include limited characterization of the spatial and temporal variability in herbivore impacts and of how herbivore activities influence the cycling of elements beyond carbon. We conclude by highlighting approaches that will promote better understanding of herbivore effects on tundra ecosystems, including their integration into existing biogeochemical models, new applications of remote sensing techniques, and the continued use of distributed experiments.
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Affiliation(s)
- Amanda M. Koltz
- Department of BiologyWashington University in St. LouisSt. LouisMissouriUSA,The Arctic InstituteCenter for Circumpolar Security StudiesWashingtonDCUSA,Department of Integrative BiologyUniversity of Texas at AustinAustinTexasUSA
| | - Laura Gough
- Department of Biological SciencesTowson UniversityTowsonMarylandUSA
| | - Jennie R. McLaren
- Department of Biological SciencesUniversity of Texas El PasoEl PasoTexasUSA
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4
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Grames EM, Montgomery GA, Boyes DH, Dicks LV, Forister ML, Matson TA, Nakagawa S, Prendergast KS, Taylor NG, Tingley MW, Wagner DL, White TE, Woodcock P, Elphick CS. A framework and case study to systematically identify long‐term insect abundance and diversity datasets. CONSERVATION SCIENCE AND PRACTICE 2022. [DOI: 10.1111/csp2.12687] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Eliza M. Grames
- Ecology and Evolutionary Biology University of Connecticut Storrs Connecticut USA
- Department of Biology University of Nevada Reno Reno Nevada USA
| | - Graham A. Montgomery
- Ecology and Evolutionary Biology University of California Los Angeles Los Angeles California USA
| | | | - Lynn V. Dicks
- Department of Zoology University of Cambridge Cambridge Cambridgeshire UK
| | | | - Tanner A. Matson
- Ecology and Evolutionary Biology University of Connecticut Storrs Connecticut USA
| | - Shinichi Nakagawa
- Evolution & Ecology Research Centre and School of Biological, Earth and Environmental Sciences University of New South Wales Sydney New South Wales Australia
| | | | - Nigel G. Taylor
- Department of Zoology University of Cambridge Cambridge Cambridgeshire UK
| | - Morgan W. Tingley
- Ecology and Evolutionary Biology University of California Los Angeles Los Angeles California USA
| | - David L. Wagner
- Ecology and Evolutionary Biology University of Connecticut Storrs Connecticut USA
| | - Thomas E. White
- School of Life and Environmental Sciences The University of Sydney Sydney New South Wales Australia
| | - Paul Woodcock
- Joint Nature Conservation Committee Peterborough Cambridgeshire UK
| | - Chris S. Elphick
- Ecology and Evolutionary Biology University of Connecticut Storrs Connecticut USA
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5
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Pinto J, Magni PA, O’Brien RC, Dadour IR. Domestic Filth Flies in New Haven, Connecticut: A Case Study on the Effects of Urbanization and Climate Change by Comparing Fly Populations after 78 Years. INSECTS 2021; 12:insects12110972. [PMID: 34821773 PMCID: PMC8623608 DOI: 10.3390/insects12110972] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/19/2021] [Accepted: 10/20/2021] [Indexed: 12/04/2022]
Abstract
Simple Summary Domestic filth fly population data were collected in the summers of 1942–1944 in the urban city of New Haven, Connecticut, during a polio epidemic. The current survey was completed 78 years later by setting out a weekly trap in the same region during June–September over a two-year period. Results indicate that the fly population has changed in the city, with 16 fewer species trapped overall, and there have been changes in the fly species trapped. Some species have increased in abundance, notably Lucilia coeruleiviridis, while numbers of the common Lucilia sericata have decreased, and Lucilia illustris was absent. Changes in land cover and climate were also assessed to show that the trap site has experienced significant habitat change, together with an increase in the average temperature and rainfall. Fly numbers were significantly affected by temperature and rainfall in both the 1940s and the current survey. The results of this study suggest the prolonged period of urbanization of the region is influencing the domestic filth fly population. Abstract Changes in common and widespread insect populations such as the domestic filth fly in urban cities are useful and relevant bioindicators for overall changes in the insect biomass. The current study surveyed necrophagous flies by placing a weekly trap from June–September over a two-year period in the city of New Haven, Connecticut, to compare data on fly abundance and diversity with data collected 78 years earlier. Climate and land cover changes were also assessed in combination with the fly population for each period. The survey results suggest the domestic filth fly population is now less diverse with decreased species richness and changes in the relative abundance of species. In both surveys, 95–96% of the population was composed of only three species. The current survey data indicate the numerical dominance of Lucilia sericata has decreased, the abundance of several species, notably Lucilia coeruleiviridis, has increased, and Lucilia illustris is absent. Species that showed a significant interaction with temperature in the 1940s survey have now increased in abundance, with several of the trapped species continuing to show an interaction with temperature and rainfall. Analysis of the land cover and climate data characterizes the trap site as a region exposed to a prolonged period of industrialization and urbanization, with only 7% of the land cover remaining undeveloped and over 50% impervious, coupled with an increase in temperature and rainfall. This study serves as a model for changes in domestic filth fly populations and other insects in similarly highly urbanized established cities.
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Affiliation(s)
- Julie Pinto
- Discipline of Medical, Molecular & Forensic Sciences, Murdoch University, 90 South Street, Murdoch, WA 6150, Australia;
- Correspondence:
| | - Paola A. Magni
- Discipline of Medical, Molecular & Forensic Sciences, Murdoch University, 90 South Street, Murdoch, WA 6150, Australia;
- Murdoch University Singapore, King’s Centre, 390 Havelock Road, Singapore 169662, Singapore
| | - R. Christopher O’Brien
- Criminal Justice and Forensic Sciences Department, Henry C. Lee College of Criminal Justice and Forensic Sciences, University of New Haven, West Haven, CT 06516, USA;
| | - Ian R. Dadour
- Source Certain International Pty Ltd., P.O. Box 1570, Wangara DC, WA 6947, Australia;
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6
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Koltz AM, Culler LE. Biting insects in a rapidly changing Arctic. CURRENT OPINION IN INSECT SCIENCE 2021; 47:75-81. [PMID: 34004377 DOI: 10.1016/j.cois.2021.04.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 03/25/2021] [Accepted: 04/30/2021] [Indexed: 06/12/2023]
Abstract
Biting insects have a long-standing reputation for being an extreme presence in the Arctic, but it is unclear how they are responding to the rapid environmental changes currently taking place in the region. We review recent advances in our understanding of climate change responses by several key groups of biting insects, including mosquitoes, blackflies, and warble/botflies, and we highlight the significant knowledge gaps on this topic. We also discuss how changes in biting insect populations could impact humans and wildlife, including disease transmission and the disruption of culturally and economically important activities. Future work should integrate scientific with local and traditional ecological knowledge to better understand global change responses by biting insects in the Arctic and the associated consequences for the environmental security of Arctic communities.
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Affiliation(s)
- Amanda M Koltz
- Department of Biology, Washington University in St. Louis, One Brookings Drive, St. Louis, MO 63130, USA; The Arctic Institute, Center for Circumpolar Security Studies, P.O. Box 21194, Washington, DC 20009, USA.
| | - Lauren E Culler
- Department of Environmental Studies, Dartmouth College, 6182 Steele Hall, Hanover, NH 03755, USA; Institute of Arctic Studies, Dickey Center for International Understanding, Dartmouth College, 6048 Haldeman Center, Hanover, NH 03755, USA
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Bjorkman AD, Wulff A. A reflection on four impactful Ambio papers: The biotic perspective : This article belongs to Ambio's 50th Anniversary Collection. Theme: Climate change impacts. AMBIO 2021; 50:1145-1149. [PMID: 33650069 PMCID: PMC8068746 DOI: 10.1007/s13280-020-01442-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 09/22/2020] [Accepted: 11/11/2020] [Indexed: 06/12/2023]
Abstract
Climate change represents one of the most pressing societal and scientific challenges of our time. While much of the current research on climate change focuses on future prediction, some of the strongest signals of warming can already be seen in Arctic and alpine areas, where temperatures are rising faster than the global average, and in the oceans, where the combination of rising temperatures and acidification due to increased CO2 concentrations has had catastrophic consequences for sensitive marine organisms inhabiting coral reefs. The scientific papers highlighted as part of this anniversary issue represent some of the most impactful advances in our understanding of the consequences of anthropogenic climate change. Here, we reflect on the legacy of these papers from the biotic perspective.
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Affiliation(s)
- Anne D. Bjorkman
- Department of Biological and Environmental Sciences, University of Gothenburg, Carl Skottsbergs gata 22B, 413 19 Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, Carl Skottsbergs gata 22B, 413 19 Gothenburg, Sweden
| | - Angela Wulff
- Department of Biological and Environmental Sciences, University of Gothenburg, Carl Skottsbergs gata 22B, 413 19 Gothenburg, Sweden
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8
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Insect Decline-A Forensic Issue? INSECTS 2021; 12:insects12040324. [PMID: 33917358 PMCID: PMC8067358 DOI: 10.3390/insects12040324] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 03/30/2021] [Accepted: 04/01/2021] [Indexed: 11/23/2022]
Abstract
Simple Summary Numerous studies report a decline in insect biodiversity and biomass on a global scale. Since forensic entomology relies on the presence of insects, the question of whether this discipline will be or already is affected by such a decrease is not only posed to investigative authorities and the public, but also to the scientific community. While the data does indeed provide overwhelming evidence of insect decline, even if the methods of evaluation and data pooling are occasionally questioned, only a few studies deal with forensically relevant insects. These few data do hardly prove a decrease in forensically relevant insect species so far. However, one factor driving insect decline is likely to have also a strong influence on necrophagous insects in the future: climate change. Abstract Recent reports have shown a dramatic loss in insect species and biomass. Since forensic entomology relies on the presence of insects, the question is whether this decline effects the discipline. The present review confirms that numerous studies document insect population declines or even extinction, despite the fact that the rates of decline and the methods used to demonstrate it are still much debated. However, with regard to a decline in necrophagous insects, there is little or only anecdotal data available. A hypothetical decrease in species diversity and population density in necrophagous insects could lead to a delayed colonization of dead bodies and a modified succession pattern due to the disappearance or new occurrence of species or their altered seasonality. Climate change as one of the drivers of insect decline will probably also have an impact on necrophagous insects and forensic entomology, leading to reduced flight and oviposition activity, modified growth rates and, therefore, an over- or underestimation of a minimum postmortem interval. Global warming with increased temperature and extreme weather requires a better understanding about necrophagous insect responses to environmental variations. Here, transgeneration effects in particular should be analysed in greater depth as this will help to understand rapid adaptation and plasticity in insects of forensic importance.
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Robinson SI, Mikola J, Ovaskainen O, O'Gorman EJ. Temperature effects on the temporal dynamics of a subarctic invertebrate community. J Anim Ecol 2021; 90:1217-1227. [PMID: 33625727 DOI: 10.1111/1365-2656.13448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 01/12/2021] [Indexed: 11/28/2022]
Abstract
Climate warming is predicted to have major impacts on the structure of terrestrial communities, particularly in high latitude ecosystems where growing seasons are short. Higher temperatures may dampen seasonal dynamics in community composition as a consequence of earlier snowmelt, with potentially cascading effects across all levels of biological organisation. Here, we examined changes in community assembly and structure along a natural soil temperature gradient in the Hengill geothermal valley, Iceland, during the summer of 2015. Sample collection over several time points within a season allowed us to assess whether temperature alters temporal variance in terrestrial communities and compositional turnover. We found that seasonal fluctuations in species richness, diversity and evenness were dampened as soil temperature increased, whereas invertebrate biomass varied more. Body mass was found to be a good predictor of species occurrence, with smaller species found at higher soil temperatures and emerging earlier in the season. Our results provide more in-depth understanding of the temporal nature of community and population-level responses to temperature, and indicate that climate warming will likely dampen the seasonal turnover of community structure that is characteristic of high latitude invertebrate communities.
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Affiliation(s)
- Sinikka I Robinson
- Ecosystems and Environment Research Programme, University of Helsinki, Lahti, Finland
| | - Juha Mikola
- Ecosystems and Environment Research Programme, University of Helsinki, Lahti, Finland
| | - Otso Ovaskainen
- Organismal and Evolutionary Biology Research Programme, University of Helsinki, Helsinki, Finland.,Centre for Biodiversity Dynamics, Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Eoin J O'Gorman
- School of Life Sciences, University of Essex, Colchester, UK
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Høye TT, Loboda S, Koltz AM, Gillespie MAK, Bowden JJ, Schmidt NM. Nonlinear trends in abundance and diversity and complex responses to climate change in Arctic arthropods. Proc Natl Acad Sci U S A 2021; 118:e2002557117. [PMID: 33431570 PMCID: PMC7812779 DOI: 10.1073/pnas.2002557117] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Time series data on arthropod populations are critical for understanding the magnitude, direction, and drivers of change. However, most arthropod monitoring programs are short-lived and restricted in taxonomic resolution. Monitoring data from the Arctic are especially underrepresented, yet critical to uncovering and understanding some of the earliest biological responses to rapid environmental change. Clear imprints of climate on the behavior and life history of some Arctic arthropods have been demonstrated, but a synthesis of population-level abundance changes across taxa is lacking. We utilized 24 y of abundance data from Zackenberg in High-Arctic Greenland to assess trends in abundance and diversity and identify potential climatic drivers of abundance changes. Unlike findings from temperate systems, we found a nonlinear pattern, with total arthropod abundance gradually declining during 1996 to 2014, followed by a sharp increase. Family-level diversity showed the opposite pattern, suggesting increasing dominance of a small number of taxa. Total abundance masked more complicated trajectories of family-level abundance, which also frequently varied among habitats. Contrary to expectation in this extreme polar environment, winter and fall conditions and positive density-dependent feedbacks were more common determinants of arthropod dynamics than summer temperature. Together, these data highlight the complexity of characterizing climate change responses even in relatively simple Arctic food webs. Our results underscore the need for data reporting beyond overall trends in biomass or abundance and for including basic research on life history and ecology to achieve a more nuanced understanding of the sensitivity of Arctic and other arthropods to global changes.
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Affiliation(s)
- Toke T Høye
- Arctic Research Centre, Aarhus University, DK-8410 Rønde, Denmark;
- Department of Bioscience, Aarhus University, DK-8410 Rønde, Denmark
| | - Sarah Loboda
- Department of Natural Resource Sciences, McGill University, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada
| | - Amanda M Koltz
- Department of Biology, Washington University in St. Louis, St. Louis, MO 63130
- The Arctic Institute, Washington, DC 20009
| | - Mark A K Gillespie
- Department of Environmental Sciences, Western Norway University of Applied Sciences, 6851 Sogndal, Norway
| | - Joseph J Bowden
- Atlantic Forestry Centre, Canadian Forest Service, Natural Resources Canada, Corner Brook, NL A2H 5G4, Canada
| | - Niels M Schmidt
- Arctic Research Centre, Aarhus University, DK-4000 Roskilde, Denmark
- Department of Bioscience, Aarhus University, DK-4000 Roskilde, Denmark
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Butler A, Davis CA, Fuhlendorf SD, Wilder SM. Effects of fire on ground-dwelling arthropods in a shrub-dominated grassland. Ecol Evol 2021; 11:427-442. [PMID: 33437440 PMCID: PMC7790617 DOI: 10.1002/ece3.7063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/28/2020] [Accepted: 10/30/2020] [Indexed: 11/16/2022] Open
Abstract
Arthropods are abundant and diverse animals in many terrestrial food webs. In western Oklahoma, some shrublands are interspersed with discrete, dense thickets of tall, woody vegetation, known as mottes. Some of these shrublands are managed with prescribed burning. The goal of this study was to examine whether prescribed burning interacted with habitat type (i.e., shrubland versus mottes) to affect ground-dwelling arthropod communities. Arthropods were collected in pitfall traps at four sampling locations in relation to mottes; in the center of mottes, and three plot location in shrublands; 1 m, 15 m, and 50 m away from the edge of the motte. There were three treatment levels for burning: one year postburn (burned in dormant months of 2017), two years postburn (burned in dormant months of 2016), and unburned (burned in dormant season of 2014 and prior). There were no significant interactions between prescribed burning and habitat type. Mottes had a different community of arthropods compared with the surrounding shrubland. Mottes also had lower overall abundance, but a higher diversity of arthropods. In terms of fires, arthropod communities one year after burning were different from those two or more years after burning. There was no effect of burning on overall arthropod abundance, but plots that were one year since burning had significantly lower diversity compared with plots that were two or more years postburn. The results of this study suggest that both fire and mottes can independently facilitate heterogeneity in arthropod communities, but they do not appear to interact with one another.
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Affiliation(s)
- Anna Butler
- Department of Integrative BiologyOklahoma State UniversityStillwaterOKUSA
| | - Craig A. Davis
- Department of Natural Resource Ecology and ManagementOklahoma State UniversityStillwaterOKUSA
| | - Samuel D. Fuhlendorf
- Department of Natural Resource Ecology and ManagementOklahoma State UniversityStillwaterOKUSA
| | - Shawn M. Wilder
- Department of Integrative BiologyOklahoma State UniversityStillwaterOKUSA
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12
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Tiusanen M, Kankaanpää T, Schmidt NM, Roslin T. Heated rivalries: Phenological variation modifies competition for pollinators among arctic plants. GLOBAL CHANGE BIOLOGY 2020; 26:6313-6325. [PMID: 32914477 PMCID: PMC7693037 DOI: 10.1111/gcb.15303] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 07/21/2020] [Accepted: 07/21/2020] [Indexed: 06/11/2023]
Abstract
When plant species compete for pollinators, climate warming may cause directional change in flowering overlap, thereby shifting the strength of pollinator-mediated plant-plant interactions. Such shifts are likely accentuated in the rapidly warming Arctic. Targeting a plant community in Northeast Greenland, we asked (a) whether the relative phenology of plants is shifting with spatial variation in temperature, (b) whether local plants compete for pollination, and (c) whether shifts in climatic conditions are likely to affect this competition. We first searched for climatic imprints on relative species phenology along an elevational gradient. We then tested for signs of competition with increasing flower densities: reduced pollinator visits, reduced representation of plant species in pollen loads, and reduced seed production. Finally, we evaluated how climate change may affect this competition. Compared to a dominant species, Dryas integrifolia × octopetala, the relative timing of other species shifted along the environmental gradient, with Silene acaulis and Papaver radicatum flowering earlier toward higher elevation. This shift resulted in larger niche overlap, allowing for an increased potential for competition for pollination. Meanwhile, Dryas emerged as a superior competitor by attracting 97.2% of flower visits. Higher Dryas density resulted in reduced insect visits and less pollen of S. acaulis being carried by pollinators, causing reduced seed set by S. acaulis. Our results show that current variation in climate shifts the timing and flowering overlap between dominant and less-competitive plant species. With climate warming, such shifts in phenology within trophic levels may ultimately affect interactions between them, changing the strength of competition among plants.
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Affiliation(s)
- Mikko Tiusanen
- Spatial Foodweb Ecology GroupDepartment of Agricultural SciencesUniversity of HelsinkiHelsinkiFinland
| | - Tuomas Kankaanpää
- Spatial Foodweb Ecology GroupDepartment of Agricultural SciencesUniversity of HelsinkiHelsinkiFinland
| | - Niels M. Schmidt
- Department of BioscienceAarhus UniversityRoskildeDenmark
- Arctic Research CentreAarhus UniversityAarhus CDenmark
| | - Tomas Roslin
- Spatial Foodweb Ecology GroupDepartment of Agricultural SciencesUniversity of HelsinkiHelsinkiFinland
- Department of EcologySwedish University of Agricultural SciencesUppsalaSweden
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13
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Kankaanpää T, Vesterinen E, Hardwick B, Schmidt NM, Andersson T, Aspholm PE, Barrio IC, Beckers N, Bêty J, Birkemoe T, DeSiervo M, Drotos KHI, Ehrich D, Gilg O, Gilg V, Hein N, Høye TT, Jakobsen KM, Jodouin C, Jorna J, Kozlov MV, Kresse J, Leandri‐Breton D, Lecomte N, Loonen M, Marr P, Monckton SK, Olsen M, Otis J, Pyle M, Roos RE, Raundrup K, Rozhkova D, Sabard B, Sokolov A, Sokolova N, Solecki AM, Urbanowicz C, Villeneuve C, Vyguzova E, Zverev V, Roslin T. Parasitoids indicate major climate-induced shifts in arctic communities. GLOBAL CHANGE BIOLOGY 2020; 26:6276-6295. [PMID: 32914511 PMCID: PMC7692897 DOI: 10.1111/gcb.15297] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 10/26/2019] [Accepted: 06/05/2020] [Indexed: 06/11/2023]
Abstract
Climatic impacts are especially pronounced in the Arctic, which as a region is warming twice as fast as the rest of the globe. Here, we investigate how mean climatic conditions and rates of climatic change impact parasitoid insect communities in 16 localities across the Arctic. We focus on parasitoids in a widespread habitat, Dryas heathlands, and describe parasitoid community composition in terms of larval host use (i.e., parasitoid use of herbivorous Lepidoptera vs. pollinating Diptera) and functional groups differing in their closeness of host associations (koinobionts vs. idiobionts). Of the latter, we expect idiobionts-as being less fine-tuned to host development-to be generally less tolerant to cold temperatures, since they are confined to attacking hosts pupating and overwintering in relatively exposed locations. To further test our findings, we assess whether similar climatic variables are associated with host abundances in a 22 year time series from Northeast Greenland. We find sites which have experienced a temperature rise in summer while retaining cold winters to be dominated by parasitoids of Lepidoptera, with the reverse being true for the parasitoids of Diptera. The rate of summer temperature rise is further associated with higher levels of herbivory, suggesting higher availability of lepidopteran hosts and changes in ecosystem functioning. We also detect a matching signal over time, as higher summer temperatures, coupled with cold early winter soils, are related to high herbivory by lepidopteran larvae, and to declines in the abundance of dipteran pollinators. Collectively, our results suggest that in parts of the warming Arctic, Dryas is being simultaneously exposed to increased herbivory and reduced pollination. Our findings point to potential drastic and rapid consequences of climate change on multitrophic-level community structure and on ecosystem functioning and highlight the value of collaborative, systematic sampling effort.
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14
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Høye TT. Arthropods and climate change - arctic challenges and opportunities. CURRENT OPINION IN INSECT SCIENCE 2020; 41:40-45. [PMID: 32674064 DOI: 10.1016/j.cois.2020.06.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 05/29/2020] [Accepted: 06/09/2020] [Indexed: 06/11/2023]
Abstract
The harsh climate, limited human infrastructures, and basic autecological knowledge gaps represent substantial challenges for studying arthropods in the Arctic. At the same time, rapid climate change, low species diversity, and strong collaborative networks provide unique and underexploited Arctic opportunities for understanding species responses to environmental change and testing ecological theory. Here, I provide an overview of individual, population, and ecosystem level responses to climate change in Arctic arthropods. I focus on thermal performance, life history variation, population dynamics, community composition, diversity, and biotic interactions. The species-poor Arctic represents a unique opportunity for testing novel, automated arthropod monitoring methods. The Arctic can also potentially provide insights to further understand and mitigate the effects of climate change on arthropods worldwide.
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Affiliation(s)
- Toke T Høye
- Department of Bioscience and Arctic Research Centre, Aarhus University, Grenåvej 14, DK-8410 Rønde, Denmark.
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15
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Koltz AM, Wright JP. Impacts of female body size on cannibalism and juvenile abundance in a dominant arctic spider. J Anim Ecol 2020; 89:1788-1798. [DOI: 10.1111/1365-2656.13230] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 03/16/2020] [Indexed: 12/23/2022]
Affiliation(s)
- Amanda M. Koltz
- Department of Biology Washington University in St. Louis St. Louis MO USA
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16
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Gillespie MAK, Alfredsson M, Barrio IC, Bowden J, Convey P, Coulson SJ, Culler LE, Dahl MT, Daly KM, Koponen S, Loboda S, Marusik Y, Sandström JP, Sikes DS, Slowik J, Høye TT. Circumpolar terrestrial arthropod monitoring: A review of ongoing activities, opportunities and challenges, with a focus on spiders. AMBIO 2020; 49:704-717. [PMID: 31030417 PMCID: PMC6989709 DOI: 10.1007/s13280-019-01185-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 02/15/2019] [Accepted: 04/05/2019] [Indexed: 05/26/2023]
Abstract
The terrestrial chapter of the Circumpolar Biodiversity Monitoring Programme (CBMP) has the potential to bring international multi-taxon, long-term monitoring together, but detailed fundamental species information for Arctic arthropods lags far behind that for vertebrates and plants. In this paper, we demonstrate this major challenge to the CBMP by focussing on spiders (Order: Araneae) as an example group. We collate available circumpolar data on the distribution of spiders and highlight the current monitoring opportunities and identify the key knowledge gaps to address before monitoring can become efficient. We found spider data to be more complete than data for other taxa, but still variable in quality and availability between Arctic regions, highlighting the need for greater international co-operation for baseline studies and data sharing. There is also a dearth of long-term datasets for spiders and other arthropod groups from which to assess status and trends of biodiversity. Therefore, baseline studies should be conducted at all monitoring stations and we make recommendations for the development of the CBMP in relation to terrestrial arthropods more generally.
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Affiliation(s)
- Mark A. K. Gillespie
- Department of Environmental Science, Western Norway University of Applied Sciences, Sogndal Campus, 6851 Sogndal, Norway
| | - Matthias Alfredsson
- The Icelandic Institute of Natural History, Urridaholtsstraeti 6–8, 210 Gardabaer, Iceland
| | - Isabel C. Barrio
- Department of Life and Environmental Sciences, University of Iceland, Sturlugata 7, 101 Reykjavík, Iceland
- Department of Natural Resources and Environmental Sciences, Agricultural University of Iceland, Árleyni 22, Keldnaholt, 112 Reykjavík, Iceland
| | - Joe Bowden
- Arctic Research Centre, Aarhus University, Ny Munkegade 114, Bldg. 1540, 8000 Aarhus C, Denmark
- Present Address: Canadian Forest Service – Atlantic Forestry Centre, 26 University Drive, PO Box 960, Corner Brook, NL A2H 6J3 Canada
| | - Peter Convey
- British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge, CB3 0ET UK
| | - Stephen J. Coulson
- Swedish Species Information Centre, Swedish University of Agricultural Sciences, 750 07 Uppsala, Sweden
| | - Lauren E. Culler
- Environmental Studies Program, Dartmouth College, 113 Steele Hall, Hanover, NH 03755 USA
- Institute of Arctic Studies, Dartmouth College, 6214 Haldeman Center, Hanover, NH 03755 USA
| | | | - Kathryn M. Daly
- University of Alaska Museum, University of Alaska Fairbanks, Fairbanks, AK 99775-6960 USA
| | - Seppo Koponen
- Zoological Museum, Biodiversity Unit, University of Turku, 20014 Turku, Finland
| | - Sarah Loboda
- Department of Natural Resource Sciences, McGill University, Ste-Anne-de-Bellevue, QC Canada
| | - Yuri Marusik
- Institute for Biological Problems of the North RAS, Portovaya Str. 18, Magadan, Russia 685000
- Department of Zoology & Entomology, University of the Free State, Bloemfontein, 9300 South Africa
| | - Jonas P. Sandström
- Swedish Species Information Centre, Swedish University of Agricultural Sciences, 750 07 Uppsala, Sweden
| | - Derek S. Sikes
- University of Alaska Museum, University of Alaska Fairbanks, Fairbanks, AK 99775-6960 USA
| | - Jozef Slowik
- University of Alaska Museum, University of Alaska Fairbanks, Fairbanks, AK 99775-6960 USA
| | - Toke T. Høye
- Arctic Research Centre, Aarhus University, Ny Munkegade 114, Bldg. 1540, 8000 Aarhus C, Denmark
- Department of Bioscience, Aarhus University, Grenåvej 14, 8410 Rønde, Denmark
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Taylor JJ, Lawler JP, Aronsson M, Barry T, Bjorkman AD, Christensen T, Coulson SJ, Cuyler C, Ehrich D, Falk K, Franke A, Fuglei E, Gillespie MA, Heiðmarsson S, Høye T, Jenkins LK, Ravolainen V, Smith PA, Wasowicz P, Schmidt NM. Arctic terrestrial biodiversity status and trends: A synopsis of science supporting the CBMP State of Arctic Terrestrial Biodiversity Report. AMBIO 2020; 49:833-847. [PMID: 31955399 PMCID: PMC6989707 DOI: 10.1007/s13280-019-01303-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
This review provides a synopsis of the main findings of individual papers in the special issue Terrestrial Biodiversity in a Rapidly Changing Arctic. The special issue was developed to inform the State of the Arctic Terrestrial Biodiversity Report developed by the Circumpolar Biodiversity Monitoring Program (CBMP) of the Conservation of Arctic Flora and Fauna (CAFF), Arctic Council working group. Salient points about the status and trends of Arctic biodiversity and biodiversity monitoring are organized by taxonomic groups: (1) vegetation, (2) invertebrates, (3) mammals, and (4) birds. This is followed by a discussion about commonalities across the collection of papers, for example, that heterogeneity was a predominant pattern of change particularly when assessing global trends for Arctic terrestrial biodiversity. Finally, the need for a comprehensive, integrated, ecosystem-based monitoring program, coupled with targeted research projects deciphering causal patterns, is discussed.
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Affiliation(s)
- Jason J. Taylor
- U.S. National Park Service, PO Box 517, Skagway, AK 99840 USA
| | - James P. Lawler
- U.S. National Park Service, 240 West 5th Ave, Anchorage, AK 99501 USA
| | - Mora Aronsson
- Swedish Species Information Centre, Swedish University of Agricultural Sciences, P.O. Box 7007, 750 07 Uppsala, Sweden
| | - Tom Barry
- CAFF Secretariat Borgir, Nordurslod 600, Akureyri, Iceland
- Department of the Environment and Natural Resources, University of Iceland, Sæmundargata 2, 102 Reykjavík, Iceland
| | - Anne D. Bjorkman
- Department of Biological and Environmental Sciences, University of Gothenburg, Carl Skottsbergs gata 22B, 405 30 Göteborg, Sweden
| | - Tom Christensen
- Arctic Research Centre, Department of Bioscience, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
| | - Stephen J. Coulson
- Swedish Species Information Centre, Swedish University of Agricultural Sciences, P.O. Box 7007, 750 07 Uppsala, Sweden
| | - Christine Cuyler
- Greenland Institute of Natural Resources, P.O. Box 570, 3900 Nuuk, Greenland
| | - Dorothee Ehrich
- UiT The Arctic University of Norway, Framstredet 39, 9037 Tromsø, Norway
| | | | - Alastair Franke
- Department of Biological Sciences, University of Alberta, Biological Sciences Bldg., CW 405, Edmonton, AB T6G 2E9 UK
- Arctic Raptor Project, P.O. Box 626, Rankin Inlet, NT X0C 0G0 Canada
| | - Eva Fuglei
- Norwegian Polar Institute, Fram Centre, Postbox 6606, Langnes, 9296 Tromsø Norway
| | - Mark A. Gillespie
- Department of Engineering and Natural Science, Western Norway University of Applied Sciences, Sogndal Campus, 6851 Sogndal, Norway
| | - Starri Heiðmarsson
- Icelandic Institute of Natural History, Borgir Nordurslod, 600 Akureyri, Iceland
| | - Toke Høye
- Department of Bioscience, Aarhus University, Grenåvej 14, 8410 Rønde, Denmark
| | - Liza K. Jenkins
- Michigan Tech Research Institute (MTRI), Michigan Technological University, 3600 Green Court, Suite 100, Ann Arbor, MI 48105 USA
| | - Virve Ravolainen
- Norwegian Polar Institute, Fram Centre, Postbox 6606, Langnes, 9296 Tromsø Norway
| | - Paul A. Smith
- Environment and Climate Change Canada, 1125 Colonel By Drive, Ottawa, ON K1A 0H3 Canada
| | - Pawel Wasowicz
- Icelandic Institute of Natural History, Borgir Nordurslod, 600 Akureyri, Iceland
| | - Niels Martin Schmidt
- Arctic Research Centre, Department of Bioscience, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
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Abstract
Insect declines are being reported worldwide for flying, ground, and aquatic lineages. Most reports come from western and northern Europe, where the insect fauna is well-studied and there are considerable demographic data for many taxonomically disparate lineages. Additional cases of faunal losses have been noted from Asia, North America, the Arctic, the Neotropics, and elsewhere. While this review addresses both species loss and population declines, its emphasis is on the latter. Declines of abundant species can be especially worrisome, given that they anchor trophic interactions and shoulder many of the essential ecosystem services of their respective communities. A review of the factors believed to be responsible for observed collapses and those perceived to be especially threatening to insects form the core of this treatment. In addition to widely recognized threats to insect biodiversity, e.g., habitat destruction, agricultural intensification (including pesticide use), climate change, and invasive species, this assessment highlights a few less commonly considered factors such as atmospheric nitrification from the burning of fossil fuels and the effects of droughts and changing precipitation patterns. Because the geographic extent and magnitude of insect declines are largely unknown, there is an urgent need for monitoring efforts, especially across ecological gradients, which will help to identify important causal factors in declines. This review also considers the status of vertebrate insectivores, reporting bias, challenges inherent in collecting and interpreting insect demographic data, and cases of increasing insect abundance.
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Affiliation(s)
- David L Wagner
- Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, Connecticut 06269, USA;
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Rheubottom SI, Barrio IC, Kozlov MV, Alatalo JM, Andersson T, Asmus AL, Baubin C, Brearley FQ, Egelkraut DD, Ehrich D, Gauthier G, Jónsdóttir IS, Konieczka S, Lévesque E, Olofsson J, Prevéy JS, Slevan-Tremblay G, Sokolov A, Sokolova N, Sokovnina S, Speed JDM, Suominen O, Zverev V, Hik DS. Hiding in the background: community-level patterns in invertebrate herbivory across the tundra biome. Polar Biol 2019. [DOI: 10.1007/s00300-019-02568-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Zawierucha K, Zmudczyńska-Skarbek K, Guil N, Bogdziewicz M. Seabirds modify trophic groups, while altitude promotes xeric-tolerant species of Tardigrada in the high Arctic tundra (Svalbard archipelago). ACTA OECOLOGICA 2019. [DOI: 10.1016/j.actao.2019.05.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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21
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The terrestrial invertebrate fauna of Edgeøya, Svalbard: Arctic landscape community composition reflects biogeography patterns. Polar Biol 2019. [DOI: 10.1007/s00300-019-02471-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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