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Productivity and dissolved oxygen controls on the Southern Ocean deep‐sea benthos during the Antarctic Cold Reversal
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dc.contributor.author | Stewart, Joseph A. | |
dc.contributor.author | Li, Tao | |
dc.contributor.author | Spooner, Peter T. | |
dc.contributor.author | Burke, Andrea | |
dc.contributor.author | Chen, Tianyu | |
dc.contributor.author | Roberts, Jenny | |
dc.contributor.author | Rae, James W. B. | |
dc.contributor.author | Peck, Victoria | |
dc.contributor.author | Kender, Sev | |
dc.contributor.author | Liu, Qian | |
dc.contributor.author | Robinson, Laura F. | |
dc.date.accessioned | 2021-10-21T09:30:07Z | |
dc.date.available | 2021-10-21T09:30:07Z | |
dc.date.issued | 2021-10-19 | |
dc.identifier | 276340463 | |
dc.identifier | efd1f50e-9e8c-47a3-bbfc-2eea5b794cc1 | |
dc.identifier | 85118216649 | |
dc.identifier | 000711966000008 | |
dc.identifier.citation | Stewart , J A , Li , T , Spooner , P T , Burke , A , Chen , T , Roberts , J , Rae , J W B , Peck , V , Kender , S , Liu , Q & Robinson , L F 2021 , ' Productivity and dissolved oxygen controls on the Southern Ocean deep‐sea benthos during the Antarctic Cold Reversal ' , Paleoceanography and Paleoclimatology , vol. 36 , no. 10 , e2021PA004288 . https://doi.org/10.1029/2021pa004288 | en |
dc.identifier.issn | 2572-4517 | |
dc.identifier.other | Jisc: 171b6985a2284670b667a1ebddfddb5e | |
dc.identifier.other | ORCID: /0000-0002-3754-1498/work/101958899 | |
dc.identifier.other | ORCID: /0000-0003-3904-2526/work/101958902 | |
dc.identifier.uri | https://hdl.handle.net/10023/24176 | |
dc.description | Funding was provided by an Antarctic Bursary awarded to J.A.S., ERC and NERC grants awarded to L.F.R. (278705, NE/S001743/1, NE/R005117/1) and L.F.R. and J.W.B.R. (NE/N003861/1). | en |
dc.description.abstract | The Antarctic Cold Reversal (ACR; 14.7 to 13 thousand years ago; ka) phase of the last deglaciation saw a pause in the rise of atmospheric CO2 and Antarctic temperature, that contrasted with warming in the North. A re-expansion of sea ice and a northward shift in the position of the westerly winds in the Southern Ocean are well-documented, but the response of deep-sea biota and the primary drivers of habitat viability remain unclear. Here we present a new perspective on ecological changes in the deglacial Southern Ocean, including multi-faunal benthic assemblage (foraminifera and cold-water corals) and coral geochemical data (Ba/Ca and δ11B) from the Drake Passage. Our records show that, during the ACR, peak abundances of thick-walled benthic foraminifera Uvigerina bifurcata and corals are observed at shallow depths in the sub-Antarctic (∼300 m), while coral populations at greater depths and further south diminished. Our ecological and geochemical data indicate that habitat shifts were dictated by (i) a northward migration of food supply (primary production) into the Subantarctic Zone and (ii) poorly oxygenated seawater at depth during this Antarctic cooling interval. | |
dc.format.extent | 17 | |
dc.format.extent | 4076795 | |
dc.language.iso | eng | |
dc.relation.ispartof | Paleoceanography and Paleoclimatology | en |
dc.subject | Coral | en |
dc.subject | Foraminifera | en |
dc.subject | Drake Passage | en |
dc.subject | Deglacial | en |
dc.subject | GC Oceanography | en |
dc.subject | DAS | en |
dc.subject.lcc | GC | en |
dc.title | Productivity and dissolved oxygen controls on the Southern Ocean deep‐sea benthos during the Antarctic Cold Reversal | en |
dc.type | Journal article | en |
dc.contributor.sponsor | NERC | en |
dc.contributor.institution | University of St Andrews. School of Earth & Environmental Sciences | en |
dc.contributor.institution | University of St Andrews. St Andrews Isotope Geochemistry | en |
dc.contributor.institution | University of St Andrews. Centre for Energy Ethics | en |
dc.identifier.doi | 10.1029/2021pa004288 | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | NE/N003861/1 | en |
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