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Conference Paper: Climatic influences on deep-sea ostracode (Crustacea) diversity for the last three million years

TitleClimatic influences on deep-sea ostracode (Crustacea) diversity for the last three million years
Authors
KeywordsDeep sea
Macroecology
Metazoan benthos
Ostracoda
Paleoceanography
Paleoclimate
Pliocene
Productivity
Quaternary
Species diversity
Temperature
Issue Date2008
PublisherEcological Society of America. The Journal's web site is located at http://www.esajournals.org/loi/ecol
Citation
Ecology, 2008, v. 89 n. 11 SUPPL., p. S53-S65 How to Cite?
AbstractOstracodes are small, bivalved crustaceans with the finest-scale fossil resolution of any metazoan, rivaled only by the fossil record of the protistan Foraminifera. This article presents a synthesis of the patterns and possible causes of alpha species diversity variation in benthic deep-sea ostracodes at drilling sites in the North Atlantic and Arctic Oceans. Taken together, these sites represent a period of great climatic variability covering the past three million years. Sediment cores taken from the Mid-Atlantic Ridge show a positive correlation between warm temperatures and high species diversity. These Mid-Atlantic Ridge cores, at the same latitude as northern Spain, show the same positive correlation during the last two glacial-interglacial cycles (200-0 ka [thousands of years ago]) as they do during the pre-glacial Pliocene 2.85-2.4 Ma (millions of years ago). This positive correlation is also found in Pliocene cores from the Rockall Plateau, at the same latitude as Ireland. During the last 200 thousand years, however, this correlation is reversed in cores taken from both the Rockall and Iceland Plateaus. The discovery of high diversity during colder periods in recent high-latitude Rockall and Iceland cores seems to be explained by spikes in diversity caused by ice-rafting events, which would not affect the lower-latitude Mid-Atlantic Ridge. The Heinrich ice-rafting events reduce North Atlantic surface temperatures and salinity every ∼6-12 ka, dramatically decreasing surface productivity. This increase in diversity during Heinrich events may be explained either by a negative correlation between surface productivity and benthic diversity or by increase in diversity caused by moderate disturbance when ice rafted debris fall to the bottom of the ocean. © 2008 by the Ecological Society of America.
Persistent Identifierhttp://hdl.handle.net/10722/132788
ISSN
2015 Impact Factor: 4.733
2015 SCImago Journal Rankings: 3.995
ISI Accession Number ID
Funding AgencyGrant Number
JSPS (the Japan Society for the Promotion of Science) Postdoctoral Fellowship for Research Abroad
Smithsonian Postdoctoral Fellowship
Funding Information:

We thank Cliff Cunningham for inviting T. M. Cronin to participate in CORONA (Coordinating Research on the North Atlantic), which is a multidisciplinary research network to study the marine biota of the North Atlantic, and inviting us to write this paper, which benefited from stimulating discussions with many CORONA project members for enhancing our understanding of North Atlantic biogeography. We are grateful to Hisayo Okahashi for assistance in preparing the manuscript. Harry J. Dowsett, Debra A. Willard, and two anonymous reviewers provided useful comments on the manuscript. Support for M. Yasuhara was provided by JSPS (the Japan Society for the Promotion of Science) Postdoctoral Fellowship for Research Abroad and Smithsonian Postdoctoral Fellowship.

References

 

DC FieldValueLanguage
dc.contributor.authorYasuhara, Men_HK
dc.contributor.authorCronin, TMen_HK
dc.date.accessioned2011-03-28T09:29:05Z-
dc.date.available2011-03-28T09:29:05Z-
dc.date.issued2008en_HK
dc.identifier.citationEcology, 2008, v. 89 n. 11 SUPPL., p. S53-S65en_HK
dc.identifier.issn0012-9658en_HK
dc.identifier.urihttp://hdl.handle.net/10722/132788-
dc.description.abstractOstracodes are small, bivalved crustaceans with the finest-scale fossil resolution of any metazoan, rivaled only by the fossil record of the protistan Foraminifera. This article presents a synthesis of the patterns and possible causes of alpha species diversity variation in benthic deep-sea ostracodes at drilling sites in the North Atlantic and Arctic Oceans. Taken together, these sites represent a period of great climatic variability covering the past three million years. Sediment cores taken from the Mid-Atlantic Ridge show a positive correlation between warm temperatures and high species diversity. These Mid-Atlantic Ridge cores, at the same latitude as northern Spain, show the same positive correlation during the last two glacial-interglacial cycles (200-0 ka [thousands of years ago]) as they do during the pre-glacial Pliocene 2.85-2.4 Ma (millions of years ago). This positive correlation is also found in Pliocene cores from the Rockall Plateau, at the same latitude as Ireland. During the last 200 thousand years, however, this correlation is reversed in cores taken from both the Rockall and Iceland Plateaus. The discovery of high diversity during colder periods in recent high-latitude Rockall and Iceland cores seems to be explained by spikes in diversity caused by ice-rafting events, which would not affect the lower-latitude Mid-Atlantic Ridge. The Heinrich ice-rafting events reduce North Atlantic surface temperatures and salinity every ∼6-12 ka, dramatically decreasing surface productivity. This increase in diversity during Heinrich events may be explained either by a negative correlation between surface productivity and benthic diversity or by increase in diversity caused by moderate disturbance when ice rafted debris fall to the bottom of the ocean. © 2008 by the Ecological Society of America.en_HK
dc.languageengen_US
dc.publisherEcological Society of America. The Journal's web site is located at http://www.esajournals.org/loi/ecolen_HK
dc.relation.ispartofEcologyen_HK
dc.subjectDeep seaen_HK
dc.subjectMacroecologyen_HK
dc.subjectMetazoan benthosen_HK
dc.subjectOstracodaen_HK
dc.subjectPaleoceanographyen_HK
dc.subjectPaleoclimateen_HK
dc.subjectPlioceneen_HK
dc.subjectProductivityen_HK
dc.subjectQuaternaryen_HK
dc.subjectSpecies diversityen_HK
dc.subjectTemperatureen_HK
dc.titleClimatic influences on deep-sea ostracode (Crustacea) diversity for the last three million yearsen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailYasuhara, M: yasuhara@hku.hken_HK
dc.identifier.authorityYasuhara, M=rp01474en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1890/07-1021.1en_HK
dc.identifier.pmid19097484-
dc.identifier.scopuseid_2-s2.0-58949088978en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-58949088978&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume89en_HK
dc.identifier.issue11 SUPPL.en_HK
dc.identifier.spageS53en_HK
dc.identifier.epageS65en_HK
dc.identifier.isiWOS:000260719000005-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridYasuhara, M=7102069020en_HK
dc.identifier.scopusauthoridCronin, TM=7102710042en_HK

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