Arid
DOI10.1007/s00300-018-2351-0
Drivers of inter-annual variation and long-term change in High-Arctic spider species abundances
Bowden, Joseph J.1,2,5; Hansen, Oskar L. P.1,2,3; Olsen, Kent2; Schmidt, Niels M.4; Hoye, Toke T.1,3
通讯作者Bowden, Joseph J.
来源期刊POLAR BIOLOGY
ISSN0722-4060
EISSN1432-2056
出版年2018
卷号41期号:8页码:1635-1649
英文摘要

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 which to generate empirical data about changes in populations and communities; this is especially pertinent in the Arctic, where climate change is occurring at a rapid rate.


英文关键词Araneae Assemblage Population Tundra Zackenberg
类型Article
语种英语
国家Denmark ; Canada
收录类别SCI-E
WOS记录号WOS:000441514400010
WOS关键词INTRAGUILD PREDATION ; YUKON-TERRITORY ; ARANEAE ; SCALE ; AVAILABILITY ; BIODIVERSITY ; ARTHROPODS ; COLLEMBOLA ; LYCOSIDAE ; CLIMATE
WOS类目Biodiversity Conservation ; Ecology
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/212341
作者单位1.Aarhus Univ, Arctic Res Ctr, Ny Munkegade 114,Bldg 1540, DK-8000 Aarhus C, Denmark;
2.Nat Hist Museum Aarhus, Wilhelm Meyers Alle 210, DK-8000 Aarhus C, Denmark;
3.Aarhus Univ, Dept Biosci, Grenavej 14, DK-8410 Ronde, Denmark;
4.Aarhus Univ, Arctic Res Ctr, Dept Biosci, Frederiksborgvej 399, DK-4000 Roskilde, Denmark;
5.Atlantic Forestry Ctr, Canadian Forest Serv, 26 Univ Dr,POB 960, Corner Brook, NF A2H 6J3, Canada
推荐引用方式
GB/T 7714
Bowden, Joseph J.,Hansen, Oskar L. P.,Olsen, Kent,et al. Drivers of inter-annual variation and long-term change in High-Arctic spider species abundances[J],2018,41(8):1635-1649.
APA Bowden, Joseph J.,Hansen, Oskar L. P.,Olsen, Kent,Schmidt, Niels M.,&Hoye, Toke T..(2018).Drivers of inter-annual variation and long-term change in High-Arctic spider species abundances.POLAR BIOLOGY,41(8),1635-1649.
MLA Bowden, Joseph J.,et al."Drivers of inter-annual variation and long-term change in High-Arctic spider species abundances".POLAR BIOLOGY 41.8(2018):1635-1649.
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