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Meter scale variation in shrub dominance and soil moisture structure Arctic arthropod communities
The Arctic is warming at twice the rate of the rest of the world. This impacts Arctic species both directly, through increased temperatures, and indirectly, through structural changes in their habitats. Species are expected to exhibit idiosyncratic responses to structural change, which calls for det...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
PeerJ Inc.
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4950568/ https://www.ncbi.nlm.nih.gov/pubmed/27478709 http://dx.doi.org/10.7717/peerj.2224 |
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author | Hansen, Rikke Reisner Hansen, Oskar Liset Pryds Bowden, Joseph J. Treier, Urs A. Normand, Signe Høye, Toke |
author_facet | Hansen, Rikke Reisner Hansen, Oskar Liset Pryds Bowden, Joseph J. Treier, Urs A. Normand, Signe Høye, Toke |
author_sort | Hansen, Rikke Reisner |
collection | PubMed |
description | The Arctic is warming at twice the rate of the rest of the world. This impacts Arctic species both directly, through increased temperatures, and indirectly, through structural changes in their habitats. Species are expected to exhibit idiosyncratic responses to structural change, which calls for detailed investigations at the species and community level. Here, we investigate how arthropod assemblages of spiders and beetles respond to variation in habitat structure at small spatial scales. We sampled transitions in shrub dominance and soil moisture between three different habitats (fen, dwarf shrub heath, and tall shrub tundra) at three different sites along a fjord gradient in southwest Greenland, using yellow pitfall cups. We identified 2,547 individuals belonging to 47 species. We used species richness estimation, indicator species analysis and latent variable modeling to examine differences in arthropod community structure in response to habitat variation at local (within site) and regional scales (between sites). We estimated species responses to the environment by fitting species-specific generalized linear models with environmental covariates. Species assemblages were segregated at the habitat and site level. Each habitat hosted significant indicator species, and species richness and diversity were significantly lower in fen habitats. Assemblage patterns were significantly linked to changes in soil moisture and vegetation height, as well as geographic location. We show that meter-scale variation among habitats affects arthropod community structure, supporting the notion that the Arctic tundra is a heterogeneous environment. To gain sufficient insight into temporal biodiversity change, we require studies of species distributions detailing species habitat preferences. |
format | Online Article Text |
id | pubmed-4950568 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | PeerJ Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-49505682016-07-29 Meter scale variation in shrub dominance and soil moisture structure Arctic arthropod communities Hansen, Rikke Reisner Hansen, Oskar Liset Pryds Bowden, Joseph J. Treier, Urs A. Normand, Signe Høye, Toke PeerJ Biodiversity The Arctic is warming at twice the rate of the rest of the world. This impacts Arctic species both directly, through increased temperatures, and indirectly, through structural changes in their habitats. Species are expected to exhibit idiosyncratic responses to structural change, which calls for detailed investigations at the species and community level. Here, we investigate how arthropod assemblages of spiders and beetles respond to variation in habitat structure at small spatial scales. We sampled transitions in shrub dominance and soil moisture between three different habitats (fen, dwarf shrub heath, and tall shrub tundra) at three different sites along a fjord gradient in southwest Greenland, using yellow pitfall cups. We identified 2,547 individuals belonging to 47 species. We used species richness estimation, indicator species analysis and latent variable modeling to examine differences in arthropod community structure in response to habitat variation at local (within site) and regional scales (between sites). We estimated species responses to the environment by fitting species-specific generalized linear models with environmental covariates. Species assemblages were segregated at the habitat and site level. Each habitat hosted significant indicator species, and species richness and diversity were significantly lower in fen habitats. Assemblage patterns were significantly linked to changes in soil moisture and vegetation height, as well as geographic location. We show that meter-scale variation among habitats affects arthropod community structure, supporting the notion that the Arctic tundra is a heterogeneous environment. To gain sufficient insight into temporal biodiversity change, we require studies of species distributions detailing species habitat preferences. PeerJ Inc. 2016-07-14 /pmc/articles/PMC4950568/ /pubmed/27478709 http://dx.doi.org/10.7717/peerj.2224 Text en © 2016 Hansen et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. |
spellingShingle | Biodiversity Hansen, Rikke Reisner Hansen, Oskar Liset Pryds Bowden, Joseph J. Treier, Urs A. Normand, Signe Høye, Toke Meter scale variation in shrub dominance and soil moisture structure Arctic arthropod communities |
title | Meter scale variation in shrub dominance and soil moisture structure Arctic arthropod communities |
title_full | Meter scale variation in shrub dominance and soil moisture structure Arctic arthropod communities |
title_fullStr | Meter scale variation in shrub dominance and soil moisture structure Arctic arthropod communities |
title_full_unstemmed | Meter scale variation in shrub dominance and soil moisture structure Arctic arthropod communities |
title_short | Meter scale variation in shrub dominance and soil moisture structure Arctic arthropod communities |
title_sort | meter scale variation in shrub dominance and soil moisture structure arctic arthropod communities |
topic | Biodiversity |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4950568/ https://www.ncbi.nlm.nih.gov/pubmed/27478709 http://dx.doi.org/10.7717/peerj.2224 |
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