Response of deep-sea biodiversity to abrupt deglacial and Holocene climate changes in the North Atlantic Ocean
Aim Little is known about how marine biodiversity responds to oceanographic and climatic changes over the decadal to centennial time-scales which are most relevant for predicted climate changes due to greenhouse gas forcing. This paper aims to reveal decadal centennial scale deep-sea biodiversity dy...
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ftsmithonian:oai:repository.si.edu:10088/25276 2023-05-15T17:30:09+02:00 Response of deep-sea biodiversity to abrupt deglacial and Holocene climate changes in the North Atlantic Ocean Yasuhara, Moriaki Okahashi, Hisayo Cronin, Thomas M. Rasmussen, Tine L. Hunt, Gene 2014 http://hdl.handle.net/10088/25276 https://doi.org/10.1111/geb.12178 unknown Global Ecology and Biogeography Yasuhara, Moriaki, Okahashi, Hisayo, Cronin, Thomas M., Rasmussen, Tine L., and Hunt, Gene. 2014. "Response of deep-sea biodiversity to abrupt deglacial and Holocene climate changes in the North Atlantic Ocean." Global Ecology and Biogeography . 23 (9):957–967. https://doi.org/10.1111/geb.12178 1466-822X http://hdl.handle.net/10088/25276 120872 doi:10.1111/geb.12178 Journal Article 2014 ftsmithonian https://doi.org/10.1111/geb.12178 2020-09-09T18:34:33Z Aim Little is known about how marine biodiversity responds to oceanographic and climatic changes over the decadal to centennial time-scales which are most relevant for predicted climate changes due to greenhouse gas forcing. This paper aims to reveal decadal centennial scale deep-sea biodiversity dynamics for the last 20,000 years and then explore potential environmental drivers. Location The North Atlantic Ocean. Methods We investigated deep-sea benthic microfossil records to reveal biodiversity dynamics and subsequently applied comprehensive ecological modelling to test possible environmental factors (i.e. surface productivity, seasonality of productivity or deepwater circulation related to bottom-water temperature) that may have influenced deep-sea biodiversity over these time-scales. Results Deep-sea biodiversity changed synchronously with stadial interstadial climate changes over the last 20,000 years across a large area of the North Atlantic in both ostracod crustaceans and foraminiferan protozoa (in spite of their different dispersal abilities). Species diversity rapidly increased during abrupt stadial events during the last deglacial and the Holocene interglacial periods. These include the well-known Heinrich 1, the Younger Dryas and the 8.2?ka events when the strength of Atlantic Meridional Overturning Circulation (AMOC) decreased. There is also evidence for quasi-cyclic changes in biodiversity at a c. 1500-year periodicity, consistent with the well-known 1500-year climatic cycle . Statistical analyses revealed that AMOC variability (probably specifically the variability in AMOC-driven bottom-water temperature) is correlated with deep-sea biodiversity. Main conclusions Our finding of a significant AMOC diversity relationship may indicate pervasive control of the diversity of deep-sea benthic species by rapidly changing climate, specifically bottom-water temperature, over decadal to centennial time-scales. Our results, based on highly resolved fossil records, may portend pervasive, synchronous and sudden ecosystem responses to human-induced changes to climate and ocean circulation in this century. NH-Paleobiology NMNH Peer-reviewed Article in Journal/Newspaper North Atlantic Unknown Global Ecology and Biogeography 23 9 957 967 |
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Aim Little is known about how marine biodiversity responds to oceanographic and climatic changes over the decadal to centennial time-scales which are most relevant for predicted climate changes due to greenhouse gas forcing. This paper aims to reveal decadal centennial scale deep-sea biodiversity dynamics for the last 20,000 years and then explore potential environmental drivers. Location The North Atlantic Ocean. Methods We investigated deep-sea benthic microfossil records to reveal biodiversity dynamics and subsequently applied comprehensive ecological modelling to test possible environmental factors (i.e. surface productivity, seasonality of productivity or deepwater circulation related to bottom-water temperature) that may have influenced deep-sea biodiversity over these time-scales. Results Deep-sea biodiversity changed synchronously with stadial interstadial climate changes over the last 20,000 years across a large area of the North Atlantic in both ostracod crustaceans and foraminiferan protozoa (in spite of their different dispersal abilities). Species diversity rapidly increased during abrupt stadial events during the last deglacial and the Holocene interglacial periods. These include the well-known Heinrich 1, the Younger Dryas and the 8.2?ka events when the strength of Atlantic Meridional Overturning Circulation (AMOC) decreased. There is also evidence for quasi-cyclic changes in biodiversity at a c. 1500-year periodicity, consistent with the well-known 1500-year climatic cycle . Statistical analyses revealed that AMOC variability (probably specifically the variability in AMOC-driven bottom-water temperature) is correlated with deep-sea biodiversity. Main conclusions Our finding of a significant AMOC diversity relationship may indicate pervasive control of the diversity of deep-sea benthic species by rapidly changing climate, specifically bottom-water temperature, over decadal to centennial time-scales. Our results, based on highly resolved fossil records, may portend pervasive, synchronous and sudden ecosystem responses to human-induced changes to climate and ocean circulation in this century. NH-Paleobiology NMNH Peer-reviewed |
format |
Article in Journal/Newspaper |
author |
Yasuhara, Moriaki Okahashi, Hisayo Cronin, Thomas M. Rasmussen, Tine L. Hunt, Gene |
spellingShingle |
Yasuhara, Moriaki Okahashi, Hisayo Cronin, Thomas M. Rasmussen, Tine L. Hunt, Gene Response of deep-sea biodiversity to abrupt deglacial and Holocene climate changes in the North Atlantic Ocean |
author_facet |
Yasuhara, Moriaki Okahashi, Hisayo Cronin, Thomas M. Rasmussen, Tine L. Hunt, Gene |
author_sort |
Yasuhara, Moriaki |
title |
Response of deep-sea biodiversity to abrupt deglacial and Holocene climate changes in the North Atlantic Ocean |
title_short |
Response of deep-sea biodiversity to abrupt deglacial and Holocene climate changes in the North Atlantic Ocean |
title_full |
Response of deep-sea biodiversity to abrupt deglacial and Holocene climate changes in the North Atlantic Ocean |
title_fullStr |
Response of deep-sea biodiversity to abrupt deglacial and Holocene climate changes in the North Atlantic Ocean |
title_full_unstemmed |
Response of deep-sea biodiversity to abrupt deglacial and Holocene climate changes in the North Atlantic Ocean |
title_sort |
response of deep-sea biodiversity to abrupt deglacial and holocene climate changes in the north atlantic ocean |
publishDate |
2014 |
url |
http://hdl.handle.net/10088/25276 https://doi.org/10.1111/geb.12178 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Global Ecology and Biogeography Yasuhara, Moriaki, Okahashi, Hisayo, Cronin, Thomas M., Rasmussen, Tine L., and Hunt, Gene. 2014. "Response of deep-sea biodiversity to abrupt deglacial and Holocene climate changes in the North Atlantic Ocean." Global Ecology and Biogeography . 23 (9):957–967. https://doi.org/10.1111/geb.12178 1466-822X http://hdl.handle.net/10088/25276 120872 doi:10.1111/geb.12178 |
op_doi |
https://doi.org/10.1111/geb.12178 |
container_title |
Global Ecology and Biogeography |
container_volume |
23 |
container_issue |
9 |
container_start_page |
957 |
op_container_end_page |
967 |
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1766125964072321024 |