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Conference Paper: Deep-Sea Biodiversity Response to Abrupt Climate Changes for the Last 20,000 Years
Title | Deep-Sea Biodiversity Response to Abrupt Climate Changes for the Last 20,000 Years |
---|---|
Authors | |
Issue Date | 2014 |
Publisher | Paleontological Society. |
Citation | The 10th North American Paleontological Convention (NAPC), Florida, USA, 15-18 February 2014. In the Paleontological Society. Papers (Special Publication), 2014, v. 13, p. 140, abstract no. Session 28-15 How to Cite? |
Abstract | High-resolution records of microfossil assemblages from
deep-sea sediment cores covering the last 20,000 years in the
North Atlantic Ocean were investigated to understand
biodiversity dynamics over decadal–centennial timescales.
The results show pervasive control of deep-sea benthic
species diversity by rapidly changing climate. Species
diversity rapidly increased during abrupt stadial events
during the last deglacial and the Holocene interglacial
periods. These included the well-known Heinrich 1, the
Younger Dryas, and the 8.2 ka events when the strength of
Atlantic Meridional Overturning Circulation (AMOC)
decreased. In addition, there is evidence for quasi-cyclic
changes in biodiversity at a 1500-year periodicity.
Statistical analyses revealed that AMOC-driven bottom-water
temperature variability is a primary influence on deep-sea
biodiversity. Our results based on the exceptionally highly
resolved fossil records highlight possible pervasive,
synchronous, and sudden ecosystem response to humaninduced
climate and ocean-circulation changes in this
century. |
Description | Session 28: Exceptional Records: Evolution and ecology of microfossils |
Persistent Identifier | http://hdl.handle.net/10722/197753 |
ISSN |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yasuhara, M | en_US |
dc.date.accessioned | 2014-05-29T08:48:56Z | - |
dc.date.available | 2014-05-29T08:48:56Z | - |
dc.date.issued | 2014 | en_US |
dc.identifier.citation | The 10th North American Paleontological Convention (NAPC), Florida, USA, 15-18 February 2014. In the Paleontological Society. Papers (Special Publication), 2014, v. 13, p. 140, abstract no. Session 28-15 | en_US |
dc.identifier.issn | 1089-3326 | - |
dc.identifier.uri | http://hdl.handle.net/10722/197753 | - |
dc.description | Session 28: Exceptional Records: Evolution and ecology of microfossils | - |
dc.description.abstract | High-resolution records of microfossil assemblages from deep-sea sediment cores covering the last 20,000 years in the North Atlantic Ocean were investigated to understand biodiversity dynamics over decadal–centennial timescales. The results show pervasive control of deep-sea benthic species diversity by rapidly changing climate. Species diversity rapidly increased during abrupt stadial events during the last deglacial and the Holocene interglacial periods. These included the well-known Heinrich 1, the Younger Dryas, and the 8.2 ka events when the strength of Atlantic Meridional Overturning Circulation (AMOC) decreased. In addition, there is evidence for quasi-cyclic changes in biodiversity at a 1500-year periodicity. Statistical analyses revealed that AMOC-driven bottom-water temperature variability is a primary influence on deep-sea biodiversity. Our results based on the exceptionally highly resolved fossil records highlight possible pervasive, synchronous, and sudden ecosystem response to humaninduced climate and ocean-circulation changes in this century. | - |
dc.language | eng | en_US |
dc.publisher | Paleontological Society. | - |
dc.relation.ispartof | The Paleontological Society. Papers | en_US |
dc.title | Deep-Sea Biodiversity Response to Abrupt Climate Changes for the Last 20,000 Years | en_US |
dc.type | Conference_Paper | en_US |
dc.identifier.email | Yasuhara, M: yasuhara@hku.hk | en_US |
dc.identifier.authority | Yasuhara, M=rp01474 | en_US |
dc.identifier.hkuros | 228853 | en_US |
dc.identifier.volume | 13 | - |
dc.identifier.spage | 140, abstract no. Session 28-15 | - |
dc.identifier.epage | 140, abstract no. Session 28-15 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 1089-3326 | - |