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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Online Access: | http://hdl.handle.net/11250/109242 https://doi.org/10.1371/journal.pone.0034924 |
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ftimr:oai:imr.brage.unit.no:11250/109242 2023-05-15T14:51:14+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 application/pdf http://hdl.handle.net/11250/109242 https://doi.org/10.1371/journal.pone.0034924 eng eng PLoS ONE urn:issn:1932-6203 http://hdl.handle.net/11250/109242 http://dx.doi.org/10.1371/journal.pone.0034924 e34924 7 PLoS ONE 4 marine ecosystems marine økosystemer demersal fish bunnfisk climate change klimaendringer VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 VDP::Social science: 200::Library and information science: 320::Knowledge retrieval and organization: 323 Journal article Peer reviewed 2012 ftimr https://doi.org/10.1371/journal.pone.0034924 2021-09-23T20:15:13Z 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). Article in Journal/Newspaper Arctic Barents Sea Climate change Global warming Novaya Zemlya Institute for Marine Research: Brage IMR Arctic Barents Sea PLoS ONE 7 4 e34924 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
marine ecosystems marine økosystemer demersal fish bunnfisk climate change klimaendringer VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 VDP::Social science: 200::Library and information science: 320::Knowledge retrieval and organization: 323 |
spellingShingle |
marine ecosystems marine økosystemer demersal fish bunnfisk climate change klimaendringer VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 VDP::Social science: 200::Library and information science: 320::Knowledge retrieval and organization: 323 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 |
topic_facet |
marine ecosystems marine økosystemer demersal fish bunnfisk climate change klimaendringer VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 VDP::Social science: 200::Library and information science: 320::Knowledge retrieval and organization: 323 |
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 |
Article in Journal/Newspaper |
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 |
PLoS ONE |
publishDate |
2012 |
url |
http://hdl.handle.net/11250/109242 https://doi.org/10.1371/journal.pone.0034924 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea Climate change Global warming Novaya Zemlya |
genre_facet |
Arctic Barents Sea Climate change Global warming Novaya Zemlya |
op_source |
e34924 7 PLoS ONE 4 |
op_relation |
urn:issn:1932-6203 http://hdl.handle.net/11250/109242 http://dx.doi.org/10.1371/journal.pone.0034924 |
op_doi |
https://doi.org/10.1371/journal.pone.0034924 |
container_title |
PLoS ONE |
container_volume |
7 |
container_issue |
4 |
container_start_page |
e34924 |
_version_ |
1766322295121379328 |