georefid:2013-048210SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2013-07-08T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.1126/science.1223646<gco:CharacterString>Reorganization of Southern Ocean plankton ecosystem at the onset of Antarctic glaciation</gco:CharacterString>2013-01-01publicationgeorefid:2013-048210doi:10.1126/science.1223646Houben, Alexander J. P.Utrecht University, Department of Earth Sciences, Utrecht, NetherlandsauthorBijl, Peter K.Goethe University Frankfurt, GermanyauthorPross, JoergUniversity of Southampton, United KingdomauthorBohaty, Steven M.Montclair State University, United StatesauthorPasschier, SandraUniversity of Tromso, NorwayauthorStickley, Catherine E.University of Bremen, GermanyauthorRoehl, UrsulaScripps Institution of Oceanography, United StatesauthorSugisaki, SaikoImperial College London, United KingdomauthorTauxe, LisaUniversity of South Florida, United Statesauthorvan de Flierdt, TinaInstituto Andaluz de Ciencias de la Terra, SpainauthorOlney, MatthewauthorSangiorgi, FrancescaauthorSluijs, AppyauthorEscutia, CarlotaauthorBrinkhuis, HenkauthorAmerican Association for the Advancement of Science, Washington, DC, United StatespublisherdocumentDigitalScience340 (6130)341-344The circum-Antarctic Southern Ocean is an important region for global marine food webs and carbon cycling because of sea-ice formation and its unique plankton ecosystem. However, the mechanisms underlying the installation of this distinct ecosystem and the geological timing of its development remain unknown. Here, we show, on the basis of fossil marine dinoflagellate cyst records, that a major restructuring of the Southern Ocean plankton ecosystem occurred abruptly and concomitant with the first major Antarctic glaciation in the earliest Oligocene ( approximately 33.6 million years ago). This turnover marks a regime shift in zooplankton-phytoplankton interactions and community structure, which indicates the appearance of eutrophic and seasonally productive environments on the Antarctic margin. We conclude that earliest Oligocene cooling, ice-sheet expansion, and subsequent sea-ice formation were important drivers of biotic evolution in the Southern Ocean.completedStratigraphyAntarcticaCenozoicclimate changeExpedition 318glaciationiceIntegrated Ocean Drilling ProgramIODP Site U1356IODP Site U1360lower OligoceneOligocenepaleo-oceanographypaleoenvironmentPaleogeneplanktonsea iceSouthern OceanTertiaryurn:org.iodp:exp:318urnlargerWorkCitationcampaignurn:org.iodp:exp:318:site:U1356urnlargerWorkCitationstudyurn:org.iodp:exp:318urnlargerWorkCitationcampaignurn:org.iodp:exp:318:site:U1360urnlargerWorkCitationstudyurn:org.iodp:exp:318urnlargerWorkCitationcampaignEnglishgeoscientificInformation135.4500144.0000-66.3000-63.1500application/pdfunknownSEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContacthttp://www.sciencemag.org/content/340/6130/341.full.pdfdownload