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Patterns and controlling factors of species diversity in the Arctic Ocean

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dc.contributor.author Yasuhara, Moriaki en
dc.contributor.author Hunt, Gene en
dc.contributor.author van Dijken, Gert en
dc.contributor.author Arrigo, Kevin R. en
dc.contributor.author Cronin, Thomas M. en
dc.contributor.author Wollenburg, Jutta E. en
dc.date.accessioned 2012-12-13T19:10:15Z
dc.date.available 2012-12-13T19:10:15Z
dc.date.issued 2012
dc.identifier.citation Yasuhara, Moriaki, Hunt, Gene, van Dijken, Gert, Arrigo, Kevin R., Cronin, Thomas M., and Wollenburg, Jutta E. 2012. "<a href="https%3A%2F%2Frepository.si.edu%2Fhandle%2F10088%2F19395">Patterns and controlling factors of species diversity in the Arctic Ocean</a>." <em>Journal of Biogeography</em>. 39 (11):2081&ndash;2088. <a href="https://doi.org/10.1111/j.1365-2699.2012.02758.x">https://doi.org/10.1111/j.1365-2699.2012.02758.x</a> en
dc.identifier.issn 1365-2699
dc.identifier.uri http://hdl.handle.net/10088/19395
dc.description.abstract Aim The Arctic Ocean is one of the last near-pristine regions on Earth, and, although human activities are expected to impact on Arctic ecosystems, we know very little about baseline patterns of Arctic Ocean biodiversity. This paper aims to describe Arctic Ocean-wide patterns of benthic biodiversity and to explore factors related to the large-scale species diversity patterns.Location Arctic Ocean.Methods We used large ostracode and foraminiferal datasets to describe the biodiversity patterns and applied comprehensive ecological modelling to test the degree to which these patterns are potentially governed by environmental factors, such as temperature, productivity, seasonality, ice cover and others. To test environmental control of the observed diversity patterns, subsets of samples for which all environmental parameters were available were analysed with multiple regression and model averaging.Results Well-known negative latitudinal species diversity gradients (LSDGs) were found in metazoan Ostracoda, but the LSDGs were unimodal with an intermediate maximum with respect to latitude in protozoan foraminifera. Depth species diversity gradients were unimodal, with peaks in diversity shallower than those in other oceans. Our modelling results showed that several factors are significant predictors of diversity, but the significant predictors were different among shallow marine ostracodes, deep-sea ostracodes and deep-sea foraminifera.Main conclusions On the basis of these Arctic Ocean-wide comprehensive datasets, we document large-scale diversity patterns with respect to latitude and depth. Our modelling results suggest that the underlying mechanisms causing these species diversity patterns are unexpectedly complex. The environmental parameters of temperature, surface productivity, seasonality of productivity, salinity and ice cover can all play a role in shaping large-scale diversity patterns, but their relative importance may depend on the ecological preferences of taxa and the oceanographic context of regions. These results suggest that a multiplicity of variables appear to be related to community structure in this system. en
dc.relation.ispartof Journal of Biogeography en
dc.title Patterns and controlling factors of species diversity in the Arctic Ocean en
dc.type Journal Article en
dc.identifier.srbnumber 112607
dc.identifier.doi 10.1111/j.1365-2699.2012.02758.x
rft.jtitle Journal of Biogeography
rft.volume 39
rft.issue 11
rft.spage 2081
rft.epage 2088
dc.description.SIUnit NH-Paleobiology en
dc.description.SIUnit NMNH en
dc.description.SIUnit Peer-reviewed en
dc.citation.spage 2081
dc.citation.epage 2088


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