Demersal Fish Assemblages and Spatial Diversity Patterns in the Arctic-Atlantic Transition Zone in the Barents Sea
Direct and indirect effects of global warming are expected to be pronounced and fast in the Arctic, impacting terrestrial, freshwater and marine ecosystems. The Barents Sea is a high latitude shelf Sea and a boundary area between arctic and boreal faunas. These faunas are likely to respond different...
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ftpubmed:oai:pubmedcentral.nih.gov:3328492 2023-05-15T14:48:27+02:00 Demersal Fish Assemblages and Spatial Diversity Patterns in the Arctic-Atlantic Transition Zone in the Barents Sea Johannesen, Edda Høines, Åge S. Dolgov, Andrey V. Fossheim, Maria 2012-04-17 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3328492 http://www.ncbi.nlm.nih.gov/pubmed/22545093 https://doi.org/10.1371/journal.pone.0034924 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3328492 http://www.ncbi.nlm.nih.gov/pubmed/22545093 http://dx.doi.org/10.1371/journal.pone.0034924 Johannesen et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2012 ftpubmed https://doi.org/10.1371/journal.pone.0034924 2013-09-04T05:44:35Z Direct and indirect effects of global warming are expected to be pronounced and fast in the Arctic, impacting terrestrial, freshwater and marine ecosystems. The Barents Sea is a high latitude shelf Sea and a boundary area between arctic and boreal faunas. These faunas are likely to respond differently to changes in climate. In addition, the Barents Sea is highly impacted by fisheries and other human activities. This strong human presence places great demands on scientific investigation and advisory capacity. In order to identify basic community structures against which future climate related or other human induced changes could be evaluated, we analyzed species composition and diversity of demersal fish in the Barents Sea. We found six main assemblages that were separated along depth and temperature gradients. There are indications that climate driven changes have already taken place, since boreal species were found in large parts of the Barents Sea shelf, including also the northern Arctic area. When modelling diversity as a function of depth and temperature, we found that two of the assemblages in the eastern Barents Sea showed lower diversity than expected from their depth and temperature. This is probably caused by low habitat complexity and the distance to the pool of boreal species in the western Barents Sea. In contrast coastal assemblages in south western Barents Sea and along Novaya Zemlya archipelago in the Eastern Barents Sea can be described as diversity “hotspots”; the South-western area had high density of species, abundance and biomass, and here some species have their northern distribution limit, whereas the Novaya Zemlya area has unique fauna of Arctic, coastal demersal fish. (see Information S1 for abstract in Russian). Text Arctic Barents Sea Global warming Novaya Zemlya PubMed Central (PMC) Arctic Barents Sea PLoS ONE 7 4 e34924 |
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Research Article Johannesen, Edda Høines, Åge S. Dolgov, Andrey V. Fossheim, Maria Demersal Fish Assemblages and Spatial Diversity Patterns in the Arctic-Atlantic Transition Zone in the Barents Sea |
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Research Article |
description |
Direct and indirect effects of global warming are expected to be pronounced and fast in the Arctic, impacting terrestrial, freshwater and marine ecosystems. The Barents Sea is a high latitude shelf Sea and a boundary area between arctic and boreal faunas. These faunas are likely to respond differently to changes in climate. In addition, the Barents Sea is highly impacted by fisheries and other human activities. This strong human presence places great demands on scientific investigation and advisory capacity. In order to identify basic community structures against which future climate related or other human induced changes could be evaluated, we analyzed species composition and diversity of demersal fish in the Barents Sea. We found six main assemblages that were separated along depth and temperature gradients. There are indications that climate driven changes have already taken place, since boreal species were found in large parts of the Barents Sea shelf, including also the northern Arctic area. When modelling diversity as a function of depth and temperature, we found that two of the assemblages in the eastern Barents Sea showed lower diversity than expected from their depth and temperature. This is probably caused by low habitat complexity and the distance to the pool of boreal species in the western Barents Sea. In contrast coastal assemblages in south western Barents Sea and along Novaya Zemlya archipelago in the Eastern Barents Sea can be described as diversity “hotspots”; the South-western area had high density of species, abundance and biomass, and here some species have their northern distribution limit, whereas the Novaya Zemlya area has unique fauna of Arctic, coastal demersal fish. (see Information S1 for abstract in Russian). |
format |
Text |
author |
Johannesen, Edda Høines, Åge S. Dolgov, Andrey V. Fossheim, Maria |
author_facet |
Johannesen, Edda Høines, Åge S. Dolgov, Andrey V. Fossheim, Maria |
author_sort |
Johannesen, Edda |
title |
Demersal Fish Assemblages and Spatial Diversity Patterns in the Arctic-Atlantic Transition Zone in the Barents Sea |
title_short |
Demersal Fish Assemblages and Spatial Diversity Patterns in the Arctic-Atlantic Transition Zone in the Barents Sea |
title_full |
Demersal Fish Assemblages and Spatial Diversity Patterns in the Arctic-Atlantic Transition Zone in the Barents Sea |
title_fullStr |
Demersal Fish Assemblages and Spatial Diversity Patterns in the Arctic-Atlantic Transition Zone in the Barents Sea |
title_full_unstemmed |
Demersal Fish Assemblages and Spatial Diversity Patterns in the Arctic-Atlantic Transition Zone in the Barents Sea |
title_sort |
demersal fish assemblages and spatial diversity patterns in the arctic-atlantic transition zone in the barents sea |
publisher |
Public Library of Science |
publishDate |
2012 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3328492 http://www.ncbi.nlm.nih.gov/pubmed/22545093 https://doi.org/10.1371/journal.pone.0034924 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea Global warming Novaya Zemlya |
genre_facet |
Arctic Barents Sea Global warming Novaya Zemlya |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3328492 http://www.ncbi.nlm.nih.gov/pubmed/22545093 http://dx.doi.org/10.1371/journal.pone.0034924 |
op_rights |
Johannesen et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0034924 |
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PLoS ONE |
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7 |
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e34924 |
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