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Article: Temporal latitudinal-gradient dynamics and tropical instability of deep-sea species diversity

TitleTemporal latitudinal-gradient dynamics and tropical instability of deep-sea species diversity
Authors
KeywordsDeep-sea Ostracoda
Global climate change
Latitudinal species diversity gradients
Macroecology
Quaternary paleoceanography
Issue Date2009
PublisherNational Academy of Sciences. The Journal's web site is located at http://www.pnas.org
Citation
Proceedings Of The National Academy Of Sciences Of The United States Of America, 2009, v. 106 n. 51, p. 21717-21720 How to Cite?
AbstractA benthic microfaunal record from the equatorial Atlantic Ocean over the past four glacial-interglacial cycles was investigated to understand temporal dynamics of deep-sea latitudinal species diversity gradients (LSDGs). The results demonstrate unexpected instability and high amplitude fluctuations of species diversity in the tropical deep ocean that are correlated with orbital-scale oscillations in global climate: Species diversity is low during glacial and high during interglacial periods. This implies that climate severely influences deep-sea diversity, even at tropical latitudes, and that deep-sea LSDGs, while generally present for the last 36 million years, were weakened or absent during glacial periods. Temporally dynamic LSDGs and unstable tropical diversity require reconsideration of current ecological hypotheses about the generation and maintenance of biodiversity as they apply to the deep sea, and underscore the potential vulnerability and conservation importance of tropical deep-sea ecosystems.
Persistent Identifierhttp://hdl.handle.net/10722/132785
ISSN
2015 Impact Factor: 9.423
2015 SCImago Journal Rankings: 6.883
PubMed Central ID
ISI Accession Number ID
Funding AgencyGrant Number
Smithsonian Postdoctoral Fellowship
Smithsonian Marine Science Network Postdoctoral Fellowship
Japan Society for the Promotion of Science Postdoctoral Fellowships for Research Abroad
Funding Information:

We thank H. J. Dowsett, D. A. Willard, and two anonymous referees for constructively critical reviews, J. Dyszynski for sample processing, and W. B. Curry for ODP 925 isotope and composite data. This research used samples provided by the Integrated Ocean Drilling Program (IODP). This work was supported by a Smithsonian Postdoctoral Fellowship, a Smithsonian Marine Science Network Postdoctoral Fellowship, and Japan Society for the Promotion of Science Postdoctoral Fellowships for Research Abroad (to M.Y.).

References

 

DC FieldValueLanguage
dc.contributor.authorYasuhara, Men_HK
dc.contributor.authorHunt, Gen_HK
dc.contributor.authorCronin, TMen_HK
dc.contributor.authorOkahashi, Hen_HK
dc.date.accessioned2011-03-28T09:29:04Z-
dc.date.available2011-03-28T09:29:04Z-
dc.date.issued2009en_HK
dc.identifier.citationProceedings Of The National Academy Of Sciences Of The United States Of America, 2009, v. 106 n. 51, p. 21717-21720en_HK
dc.identifier.issn0027-8424en_HK
dc.identifier.urihttp://hdl.handle.net/10722/132785-
dc.description.abstractA benthic microfaunal record from the equatorial Atlantic Ocean over the past four glacial-interglacial cycles was investigated to understand temporal dynamics of deep-sea latitudinal species diversity gradients (LSDGs). The results demonstrate unexpected instability and high amplitude fluctuations of species diversity in the tropical deep ocean that are correlated with orbital-scale oscillations in global climate: Species diversity is low during glacial and high during interglacial periods. This implies that climate severely influences deep-sea diversity, even at tropical latitudes, and that deep-sea LSDGs, while generally present for the last 36 million years, were weakened or absent during glacial periods. Temporally dynamic LSDGs and unstable tropical diversity require reconsideration of current ecological hypotheses about the generation and maintenance of biodiversity as they apply to the deep sea, and underscore the potential vulnerability and conservation importance of tropical deep-sea ecosystems.en_HK
dc.languageengen_US
dc.publisherNational Academy of Sciences. The Journal's web site is located at http://www.pnas.orgen_HK
dc.relation.ispartofProceedings of the National Academy of Sciences of the United States of Americaen_HK
dc.subjectDeep-sea Ostracodaen_HK
dc.subjectGlobal climate changeen_HK
dc.subjectLatitudinal species diversity gradientsen_HK
dc.subjectMacroecologyen_HK
dc.subjectQuaternary paleoceanographyen_HK
dc.titleTemporal latitudinal-gradient dynamics and tropical instability of deep-sea species diversityen_HK
dc.typeArticleen_HK
dc.identifier.emailYasuhara, M: yasuhara@hku.hken_HK
dc.identifier.authorityYasuhara, M=rp01474en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1073/pnas.0910935106en_HK
dc.identifier.pmid20018702-
dc.identifier.pmcidPMC2799869-
dc.identifier.scopuseid_2-s2.0-76049093133en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-76049093133&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume106en_HK
dc.identifier.issue51en_HK
dc.identifier.spage21717en_HK
dc.identifier.epage21720en_HK
dc.identifier.eissn1091-6490-
dc.identifier.isiWOS:000272994200047-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridYasuhara, M=7102069020en_HK
dc.identifier.scopusauthoridHunt, G=8502893500en_HK
dc.identifier.scopusauthoridCronin, TM=7102710042en_HK
dc.identifier.scopusauthoridOkahashi, H=23971420100en_HK

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