Drivers of inter-annual variation and long-term change in High-Arctic spider species abundances
Understanding how species abundances vary in space and time is a central theme in ecology, yet there are few long-term field studies of terrestrial invertebrate abundances and the determinants of their dynamics. This is particularly relevant in the context of rapid climate change occurring in the Ar...
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ftuniaarhuspubl:oai:pure.atira.dk:publications/835a2c99-1049-4a9b-8dbb-c73117d03f9f 2024-02-11T09:59:31+01:00 Drivers of inter-annual variation and long-term change in High-Arctic spider species abundances Bowden, Joseph J. Hansen, Oskar L. P. Olsen, Kent Schmidt, Niels M. Høye, Toke T. 2018 https://pure.au.dk/portal/en/publications/835a2c99-1049-4a9b-8dbb-c73117d03f9f https://doi.org/10.1007/s00300-018-2351-0 eng eng https://pure.au.dk/portal/en/publications/835a2c99-1049-4a9b-8dbb-c73117d03f9f info:eu-repo/semantics/restrictedAccess Bowden , J J , Hansen , O L P , Olsen , K , Schmidt , N M & Høye , T T 2018 , ' Drivers of inter-annual variation and long-term change in High-Arctic spider species abundances ' , Polar Biology , vol. 41 , no. 8 , pp. 1635-1649 . https://doi.org/10.1007/s00300-018-2351-0 Araneae Assemblage Population Tundra Zackenberg article 2018 ftuniaarhuspubl https://doi.org/10.1007/s00300-018-2351-0 2024-01-17T23:59:56Z Understanding how species abundances vary in space and time is a central theme in ecology, yet there are few long-term field studies of terrestrial invertebrate abundances and the determinants of their dynamics. This is particularly relevant in the context of rapid climate change occurring in the Arctic. Arthropods can serve as strong indicators of ecosystem change due to their sensitivity to increasing temperatures and other environmental variables. We used spider samples collected by pitfall trapping from three different habitats (fen, mesic and arid heath) in High-Arctic Greenland to assess changes in individual species abundances over an 18-year period (1996–2014). We calculated annual abundances of each species using a conventional method and compared this to a technique that corrected for the influence of short-term weather variation on arthropod activity. The latter method used the area under the curve of a fitted generalized additive model to measure annual change in abundance of each species. Abundances calculated using each of the two methods did not differ greatly over time nor in direction of climate effects, suggesting that short-term weather-driven activity does not influence interpretation of long-term trends. We used model selection to determine which climatic variables and/or previous years’ abundance best explained annual variation in species abundances over this period. We identified and used 28 566 adult spiders that comprised eight species. Most notably, the abundances of some species (Collinsia thulensis and Erigone psychrophila) have declined during this 18-year period, in response to rising temperatures and snow depth dynamics, which affected snowmelt timing and moisture availability. No species increased in abundance through the study period. Since some species showed no trend in abundance through time and climatic effects were habitat-specific, continued climate change may also affect local species interactions. Long-term monitoring programmes are an extremely valuable means through ... Article in Journal/Newspaper Arctic Arctic Climate change Greenland Polar Biology Tundra Zackenberg Aarhus University: Research Arctic Greenland Polar Biology 41 8 1635 1649 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Araneae Assemblage Population Tundra Zackenberg |
spellingShingle |
Araneae Assemblage Population Tundra Zackenberg Bowden, Joseph J. Hansen, Oskar L. P. Olsen, Kent Schmidt, Niels M. Høye, Toke T. Drivers of inter-annual variation and long-term change in High-Arctic spider species abundances |
topic_facet |
Araneae Assemblage Population Tundra Zackenberg |
description |
Understanding how species abundances vary in space and time is a central theme in ecology, yet there are few long-term field studies of terrestrial invertebrate abundances and the determinants of their dynamics. This is particularly relevant in the context of rapid climate change occurring in the Arctic. Arthropods can serve as strong indicators of ecosystem change due to their sensitivity to increasing temperatures and other environmental variables. We used spider samples collected by pitfall trapping from three different habitats (fen, mesic and arid heath) in High-Arctic Greenland to assess changes in individual species abundances over an 18-year period (1996–2014). We calculated annual abundances of each species using a conventional method and compared this to a technique that corrected for the influence of short-term weather variation on arthropod activity. The latter method used the area under the curve of a fitted generalized additive model to measure annual change in abundance of each species. Abundances calculated using each of the two methods did not differ greatly over time nor in direction of climate effects, suggesting that short-term weather-driven activity does not influence interpretation of long-term trends. We used model selection to determine which climatic variables and/or previous years’ abundance best explained annual variation in species abundances over this period. We identified and used 28 566 adult spiders that comprised eight species. Most notably, the abundances of some species (Collinsia thulensis and Erigone psychrophila) have declined during this 18-year period, in response to rising temperatures and snow depth dynamics, which affected snowmelt timing and moisture availability. No species increased in abundance through the study period. Since some species showed no trend in abundance through time and climatic effects were habitat-specific, continued climate change may also affect local species interactions. Long-term monitoring programmes are an extremely valuable means through ... |
format |
Article in Journal/Newspaper |
author |
Bowden, Joseph J. Hansen, Oskar L. P. Olsen, Kent Schmidt, Niels M. Høye, Toke T. |
author_facet |
Bowden, Joseph J. Hansen, Oskar L. P. Olsen, Kent Schmidt, Niels M. Høye, Toke T. |
author_sort |
Bowden, Joseph J. |
title |
Drivers of inter-annual variation and long-term change in High-Arctic spider species abundances |
title_short |
Drivers of inter-annual variation and long-term change in High-Arctic spider species abundances |
title_full |
Drivers of inter-annual variation and long-term change in High-Arctic spider species abundances |
title_fullStr |
Drivers of inter-annual variation and long-term change in High-Arctic spider species abundances |
title_full_unstemmed |
Drivers of inter-annual variation and long-term change in High-Arctic spider species abundances |
title_sort |
drivers of inter-annual variation and long-term change in high-arctic spider species abundances |
publishDate |
2018 |
url |
https://pure.au.dk/portal/en/publications/835a2c99-1049-4a9b-8dbb-c73117d03f9f https://doi.org/10.1007/s00300-018-2351-0 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Arctic Climate change Greenland Polar Biology Tundra Zackenberg |
genre_facet |
Arctic Arctic Climate change Greenland Polar Biology Tundra Zackenberg |
op_source |
Bowden , J J , Hansen , O L P , Olsen , K , Schmidt , N M & Høye , T T 2018 , ' Drivers of inter-annual variation and long-term change in High-Arctic spider species abundances ' , Polar Biology , vol. 41 , no. 8 , pp. 1635-1649 . https://doi.org/10.1007/s00300-018-2351-0 |
op_relation |
https://pure.au.dk/portal/en/publications/835a2c99-1049-4a9b-8dbb-c73117d03f9f |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s00300-018-2351-0 |
container_title |
Polar Biology |
container_volume |
41 |
container_issue |
8 |
container_start_page |
1635 |
op_container_end_page |
1649 |
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1790595389536075776 |