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Biotic interactions mediate patterns of herbivore diversity in the Arctic

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dc.contributor Háskóli Íslands
dc.contributor University of Iceland
dc.contributor Landbúnaðarháskóli Íslands
dc.contributor Agricultural University of Iceland
dc.contributor.author Barrio, Isabel C
dc.contributor.author Bueno, C. Guillermo
dc.contributor.author Gartzia, M
dc.contributor.author Soininen, E.M.
dc.contributor.author Christie, K.S.
dc.contributor.author Speed, J.D.M.
dc.contributor.author Ravolainen, V.T.
dc.contributor.author Forbes, B.C.
dc.contributor.author Gauthier, G.
dc.contributor.author Horstkotte, T.
dc.contributor.author Hoset, K.S.
dc.contributor.author Hoye, T.T.
dc.contributor.author Jónsdóttir, Ingibjörg Svala
dc.contributor.author Lévesque, E.
dc.contributor.author Mörsdorf, M.A.
dc.contributor.author Olofsson, J.
dc.contributor.author Wookey, P.A.
dc.contributor.author Hik, D.S.
dc.date.accessioned 2018-05-29T14:01:19Z
dc.date.available 2018-05-29T14:01:19Z
dc.date.issued 2016
dc.identifier.citation I. C. Barrio, C. G. Bueno, M. Gartzia, E. M. Soininen, K. S. Christie, J. D. M. Speed, V. T. Ravolainen, B. C. Forbes, G. Gauthier, T. Horstkotte, K. S. Hoset, T. T. Høye, I. S. Jónsdóttir, E. Lévesque, M. A. Mörsdorf, J. Olofsson, P. A. Wookey, D. S. Hik (2016). Biotic interactions mediate patterns of herbivore diversity in the Arctic. Global Ecology and Biogeography, 25(9), 1108-1118. doi:doi:10.1111/geb.12470
dc.identifier.issn 1466-822X,
dc.identifier.issn 1466-8238 (eISSN)
dc.identifier.uri https://hdl.handle.net/20.500.11815/735
dc.description.abstract Aim. Understanding the forces shaping biodiversity patterns, particularly for groups of organisms with key functional roles, will help predict ecosystem responses to environmental changes. Our aim was to evaluate the relative role of different drivers in shaping diversity patterns of vertebrate herbivores, a group of organisms exerting a strong trophic influence in terrestrial Arctic ecosystems. This biome, traditionally perceived as homogeneous and low in biodiversity, includes wide variation in biotic and physical conditions and is currently undergoing major environmental change. Location. Arctic (including High Arctic, Low Arctic and Subarctic) Methods. We compiled available data on vertebrate (bird and mammal) herbivore distribution at a pan-Arctic scale, and used eight variables that represent the most relevant hypotheses to explain patterns of species richness. We used range maps rasterized on a 100 x 100 km equal-area grid to analyse richness patterns of all vertebrate herbivore species combined, and birds and mammalian herbivores separately. Results. Overall, patterns of herbivore species richness in the Arctic were positively related to plant productivity (measured with Normalized Difference Vegetation Index) and to the species richness of predators. Greater species richness of herbivores was also linked to areas with higher mean annual temperature. Species richness of bird and mammalian herbivores were related to the distance from the coast, with highest bird richness in coastal areas and mammal richness peaking further inland. Main conclusions. Herbivore richness in the Arctic is most strongly linked to primary productivity and the species richness of predators. Our results suggest that biotic interactions, with either higher or lower trophic levels or both, can drive patterns of species richness at a biome-wide scale. Rapid ongoing environmental changes in the Arctic are likely to affect herbivore diversity through both impacts on primary productivity and changes in predator communities via range expansion of predators from lower latitudes.
dc.description.sponsorship Birdlife International and NatureServe. I.C.B. was supported bya post-doctoral fellowship funded by the Icelandic ResearchFund (Rannsóknasjóður, grant no. 152468-051), E.M.S. and V.T.R. by the Fram Centre through the Climate-EcologicalObservatory for Arctic Tundra (COAT). Funding was also avail-able through the Natural Sciences and Engineering ResearchCouncil (Canada) to D.S.H
dc.format.extent 1108-1118
dc.language.iso en
dc.publisher John Wiley & Sons Ltd
dc.relation.ispartofseries Global Ecology and Biogeography;25(9)
dc.rights info:eu-repo/semantics/openAccess
dc.subject Biodiversity
dc.subject Biotic interactions
dc.subject Predator–prey
dc.subject Species richness
dc.subject Trophic interactions
dc.subject Tundra
dc.subject Líffræðileg fjölbreytni
dc.subject Tegundafjölbreytni
dc.subject Grasbítar
dc.subject Mataræði
dc.subject Túndrur
dc.title Biotic interactions mediate patterns of herbivore diversity in the Arctic
dc.type info:eu-repo/semantics/article
dc.description.version final submission
dc.identifier.journal Global Ecology and Biogeography
dc.identifier.doi 10.1111/geb.12470
dc.contributor.department Líf- og umhverfisvísindastofnun (HÍ)
dc.contributor.department Institute of Life and Environmental Sciences (UI)
dc.contributor.school Verkfræði- og náttúruvísindasvið (HÍ)
dc.contributor.school School of Engineering and Natural Sciences (UI)

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