Productivity and Dissolved Oxygen Controls on the Southern Ocean Deep‐Sea Benthos During the Antarctic Cold Reversal
dc.contributor.author | Stewart, JA | |
dc.contributor.author | Li, T | |
dc.contributor.author | Spooner, PT | |
dc.contributor.author | Burke, A | |
dc.contributor.author | Chen, T | |
dc.contributor.author | Roberts, J | |
dc.contributor.author | Rae, JWB | |
dc.contributor.author | Peck, V | |
dc.contributor.author | Kender, S | |
dc.contributor.author | Liu, Q | |
dc.contributor.author | Robinson, LF | |
dc.date.accessioned | 2021-10-25T07:30:45Z | |
dc.date.issued | 2021-10-08 | |
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 reexpansion 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 multifaunal 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 (a) a northward migration of food supply (primary production) into the sub-Antarctic Zone and (b) poorly oxygenated seawater at depth during this Antarctic cooling interval. | en_GB |
dc.description.sponsorship | European Research Council (ERC) | en_GB |
dc.identifier.citation | Vol. 36 (10), article e2021PA004288 | en_GB |
dc.identifier.doi | 10.1029/2021pa004288 | |
dc.identifier.grantnumber | 278705 | en_GB |
dc.identifier.grantnumber | NE/ S001743/1 | en_GB |
dc.identifier.grantnumber | NE/R005117/1 | en_GB |
dc.identifier.grantnumber | NE/N003861/1 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/127568 | |
dc.language.iso | en | en_GB |
dc.publisher | American Geophysical Union (AGU) / Wiley | en_GB |
dc.relation.url | https://doi.pangaea.de/10.1594/PANGAEA.924088 | en_GB |
dc.relation.url | https://doi.pangaea.de/10.1594/PANGAEA.924091 | en_GB |
dc.relation.url | https://doi.pangaea.de/10.1594/PANGAEA.924097 | en_GB |
dc.rights | © 2021. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. | en_GB |
dc.title | Productivity and Dissolved Oxygen Controls on the Southern Ocean Deep‐Sea Benthos During the Antarctic Cold Reversal | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2021-10-25T07:30:45Z | |
dc.identifier.issn | 2572-4517 | |
dc.description | This is the final version. Available on open access from Wiley via the DOI in this record | en_GB |
dc.description | Data Availability Statement: Data sets for this research are available at https://pangaea.de/ https://doi.pangaea.de/10.1594/PANGAEA.924088, https://doi.pangaea.de/10.1594/PANGAEA.924091, and https://doi.pangaea.de/10.1594/PANGAEA.924097 | en_GB |
dc.identifier.journal | Paleoceanography and Paleoclimatology | en_GB |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_GB |
dcterms.dateAccepted | 2021-09-29 | |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2021-10-08 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2021-10-25T07:28:11Z | |
refterms.versionFCD | VoR | |
refterms.dateFOA | 2021-10-25T07:30:50Z | |
refterms.panel | B | en_GB |
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Except where otherwise noted, this item's licence is described as © 2021. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.