Climate change alters the structure of arctic marine food webs due to poleward shifts of boreal generalists
Climate-driven poleward shifts, leading to changes in species composition and relative abundances, have been recently documented in the Arctic. Among the fastest moving species are boreal generalist fish which are expected to affect arctic marine food web structure and ecosystem functioning substant...
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ftpubmed:oai:pubmedcentral.nih.gov:4571709 2023-05-15T14:33:29+02:00 Climate change alters the structure of arctic marine food webs due to poleward shifts of boreal generalists Kortsch, Susanne Primicerio, Raul Fossheim, Maria Dolgov, Andrey V. Aschan, Michaela 2015-09-07 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4571709/ http://www.ncbi.nlm.nih.gov/pubmed/26336179 https://doi.org/10.1098/rspb.2015.1546 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4571709/ http://www.ncbi.nlm.nih.gov/pubmed/26336179 http://dx.doi.org/10.1098/rspb.2015.1546 © 2015 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. CC-BY Research Articles Text 2015 ftpubmed https://doi.org/10.1098/rspb.2015.1546 2015-10-04T00:23:36Z Climate-driven poleward shifts, leading to changes in species composition and relative abundances, have been recently documented in the Arctic. Among the fastest moving species are boreal generalist fish which are expected to affect arctic marine food web structure and ecosystem functioning substantially. Here, we address structural changes at the food web level induced by poleward shifts via topological network analysis of highly resolved boreal and arctic food webs of the Barents Sea. We detected considerable differences in structural properties and link configuration between the boreal and the arctic food webs, the latter being more modular and less connected. We found that a main characteristic of the boreal fish moving poleward into the arctic region of the Barents Sea is high generalism, a property that increases connectance and reduces modularity in the arctic marine food web. Our results reveal that habitats form natural boundaries for food web modules, and that generalists play an important functional role in coupling pelagic and benthic modules. We posit that these habitat couplers have the potential to promote the transfer of energy and matter between habitats, but also the spread of pertubations, thereby changing arctic marine food web structure considerably with implications for ecosystem dynamics and functioning. Text Arctic Barents Sea Climate change PubMed Central (PMC) Arctic Barents Sea Proceedings of the Royal Society B: Biological Sciences 282 1814 20151546 |
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Research Articles |
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Research Articles Kortsch, Susanne Primicerio, Raul Fossheim, Maria Dolgov, Andrey V. Aschan, Michaela Climate change alters the structure of arctic marine food webs due to poleward shifts of boreal generalists |
topic_facet |
Research Articles |
description |
Climate-driven poleward shifts, leading to changes in species composition and relative abundances, have been recently documented in the Arctic. Among the fastest moving species are boreal generalist fish which are expected to affect arctic marine food web structure and ecosystem functioning substantially. Here, we address structural changes at the food web level induced by poleward shifts via topological network analysis of highly resolved boreal and arctic food webs of the Barents Sea. We detected considerable differences in structural properties and link configuration between the boreal and the arctic food webs, the latter being more modular and less connected. We found that a main characteristic of the boreal fish moving poleward into the arctic region of the Barents Sea is high generalism, a property that increases connectance and reduces modularity in the arctic marine food web. Our results reveal that habitats form natural boundaries for food web modules, and that generalists play an important functional role in coupling pelagic and benthic modules. We posit that these habitat couplers have the potential to promote the transfer of energy and matter between habitats, but also the spread of pertubations, thereby changing arctic marine food web structure considerably with implications for ecosystem dynamics and functioning. |
format |
Text |
author |
Kortsch, Susanne Primicerio, Raul Fossheim, Maria Dolgov, Andrey V. Aschan, Michaela |
author_facet |
Kortsch, Susanne Primicerio, Raul Fossheim, Maria Dolgov, Andrey V. Aschan, Michaela |
author_sort |
Kortsch, Susanne |
title |
Climate change alters the structure of arctic marine food webs due to poleward shifts of boreal generalists |
title_short |
Climate change alters the structure of arctic marine food webs due to poleward shifts of boreal generalists |
title_full |
Climate change alters the structure of arctic marine food webs due to poleward shifts of boreal generalists |
title_fullStr |
Climate change alters the structure of arctic marine food webs due to poleward shifts of boreal generalists |
title_full_unstemmed |
Climate change alters the structure of arctic marine food webs due to poleward shifts of boreal generalists |
title_sort |
climate change alters the structure of arctic marine food webs due to poleward shifts of boreal generalists |
publisher |
The Royal Society |
publishDate |
2015 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4571709/ http://www.ncbi.nlm.nih.gov/pubmed/26336179 https://doi.org/10.1098/rspb.2015.1546 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea Climate change |
genre_facet |
Arctic Barents Sea Climate change |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4571709/ http://www.ncbi.nlm.nih.gov/pubmed/26336179 http://dx.doi.org/10.1098/rspb.2015.1546 |
op_rights |
© 2015 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1098/rspb.2015.1546 |
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Proceedings of the Royal Society B: Biological Sciences |
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282 |
container_issue |
1814 |
container_start_page |
20151546 |
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1766306723341008896 |