Exceptional 20th century shifts in deep-sea ecosystems are spatially heterogeneous and associated with local surface ocean variability
Traditionally, deep-sea ecosystems have been considered to be insulated from the effects of modern climate change, but with the recognition of the importance of food supply from the surface ocean and deep-sea currents to sustaining these systems, the potential for rapid response of benthic systems t...
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ftdatacite:10.5281/zenodo.5572499 2023-05-15T17:34:32+02:00 Exceptional 20th century shifts in deep-sea ecosystems are spatially heterogeneous and associated with local surface ocean variability O'Brien, Charlotte L. Spooner, Peter T. Wharton, Jack Hudak Papachristopoulou, Eirini Dutton, Nicolas Fairman, David Garratt, Rebecca Tianying Li Pallottino, Francesco Stringer, Fiona Thornalley, David J.R. 2021 https://dx.doi.org/10.5281/zenodo.5572499 https://zenodo.org/record/5572499 unknown Zenodo https://zenodo.org/communities/iatlantic-project-collection https://dx.doi.org/10.5281/zenodo.5572498 https://zenodo.org/communities/iatlantic-project-collection Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess CC-BY Text Presentation article-journal ScholarlyArticle 2021 ftdatacite https://doi.org/10.5281/zenodo.5572499 https://doi.org/10.5281/zenodo.5572498 2021-11-05T12:55:41Z Traditionally, deep-sea ecosystems have been considered to be insulated from the effects of modern climate change, but with the recognition of the importance of food supply from the surface ocean and deep-sea currents to sustaining these systems, the potential for rapid response of benthic systems to climate change is gaining increasing attention. However, very few ecological time-series exist for the deep ocean covering the twentieth century. Benthic responses to past climate change have been well-documented using marine sediment cores on glacial-interglacial timescales, and ocean sediments have also begun to reveal that planktic species assemblages are already being influenced by global warming. Here, we use benthic foraminifera found in mid-latitude and subpolar North Atlantic sediment cores to show that, in locations beneath areas of major surface water change, benthic ecosystems have also changed significantly over the last ~150 years. The maximum benthic response occurs in areas which have seen large changes in surface circulation, temperature and/or productivity. We infer that the observed surface-deep ocean coupling is due to changes in the supply of organic matter exported from the surface ocean and delivered to the seafloor. The local-to-regional scale nature of these changes highlights that accurate projections of changes in deep-sea ecosystems will require (1) increased spatial coverage of deep-sea proxy records and, (2) models capable of adequately resolving these relatively small-scale oceanographic features. Conference Object North Atlantic DataCite Metadata Store (German National Library of Science and Technology) |
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description |
Traditionally, deep-sea ecosystems have been considered to be insulated from the effects of modern climate change, but with the recognition of the importance of food supply from the surface ocean and deep-sea currents to sustaining these systems, the potential for rapid response of benthic systems to climate change is gaining increasing attention. However, very few ecological time-series exist for the deep ocean covering the twentieth century. Benthic responses to past climate change have been well-documented using marine sediment cores on glacial-interglacial timescales, and ocean sediments have also begun to reveal that planktic species assemblages are already being influenced by global warming. Here, we use benthic foraminifera found in mid-latitude and subpolar North Atlantic sediment cores to show that, in locations beneath areas of major surface water change, benthic ecosystems have also changed significantly over the last ~150 years. The maximum benthic response occurs in areas which have seen large changes in surface circulation, temperature and/or productivity. We infer that the observed surface-deep ocean coupling is due to changes in the supply of organic matter exported from the surface ocean and delivered to the seafloor. The local-to-regional scale nature of these changes highlights that accurate projections of changes in deep-sea ecosystems will require (1) increased spatial coverage of deep-sea proxy records and, (2) models capable of adequately resolving these relatively small-scale oceanographic features. |
format |
Conference Object |
author |
O'Brien, Charlotte L. Spooner, Peter T. Wharton, Jack Hudak Papachristopoulou, Eirini Dutton, Nicolas Fairman, David Garratt, Rebecca Tianying Li Pallottino, Francesco Stringer, Fiona Thornalley, David J.R. |
spellingShingle |
O'Brien, Charlotte L. Spooner, Peter T. Wharton, Jack Hudak Papachristopoulou, Eirini Dutton, Nicolas Fairman, David Garratt, Rebecca Tianying Li Pallottino, Francesco Stringer, Fiona Thornalley, David J.R. Exceptional 20th century shifts in deep-sea ecosystems are spatially heterogeneous and associated with local surface ocean variability |
author_facet |
O'Brien, Charlotte L. Spooner, Peter T. Wharton, Jack Hudak Papachristopoulou, Eirini Dutton, Nicolas Fairman, David Garratt, Rebecca Tianying Li Pallottino, Francesco Stringer, Fiona Thornalley, David J.R. |
author_sort |
O'Brien, Charlotte L. |
title |
Exceptional 20th century shifts in deep-sea ecosystems are spatially heterogeneous and associated with local surface ocean variability |
title_short |
Exceptional 20th century shifts in deep-sea ecosystems are spatially heterogeneous and associated with local surface ocean variability |
title_full |
Exceptional 20th century shifts in deep-sea ecosystems are spatially heterogeneous and associated with local surface ocean variability |
title_fullStr |
Exceptional 20th century shifts in deep-sea ecosystems are spatially heterogeneous and associated with local surface ocean variability |
title_full_unstemmed |
Exceptional 20th century shifts in deep-sea ecosystems are spatially heterogeneous and associated with local surface ocean variability |
title_sort |
exceptional 20th century shifts in deep-sea ecosystems are spatially heterogeneous and associated with local surface ocean variability |
publisher |
Zenodo |
publishDate |
2021 |
url |
https://dx.doi.org/10.5281/zenodo.5572499 https://zenodo.org/record/5572499 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://zenodo.org/communities/iatlantic-project-collection https://dx.doi.org/10.5281/zenodo.5572498 https://zenodo.org/communities/iatlantic-project-collection |
op_rights |
Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5281/zenodo.5572499 https://doi.org/10.5281/zenodo.5572498 |
_version_ |
1766133405408296960 |