{"NOAAStudyId":"11926","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","constraints":"Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"2011-08-22","dataPublisher":"NOAA","dataType":"PALEOCEANOGRAPHY","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/paleoceanography","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-ocean-11926.xml","doi":null,"earliestYearBP":55000000,"earliestYearCE":-54998050,"entryId":"noaa-ocean-11926","funding":[],"investigators":"Schneider, L.J.; Bralower, T.J.; Kump, L.R.","mostRecentYearBP":39000000,"mostRecentYearCE":-38998050,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/11926","originalSource":null,"publication":[{"abstract":"Nannoplankton play a significant role in the global carbon cycle; changes in the composition of the assemblage can influence primary productivity, carbon burial, and ultimately climate. Here counts of nannofossils in Eocene samples document one of the largest nannoplankton assemblage turnovers of the Cenozoic Era. This event is marked by the global expansion of Reticulofenestra at the termination of the early Eocene climatic optimum (EECO), and continues through the progressive cooling to the earliest Oligocene glaciation. To understand the mechanisms driving this assemblage shift we use multivariate statistical techniques and carbon and oxygen isotope records from localities worldwide. We find that the turnover in the global nannofossil assemblage is tied to thermal destratification of the ocean and a coincident decrease in the efficiency of the oceanic biologic pump at the height of the EECO. We propose that increased vertical mixing and increased nutrient supply to surface waters during the EECO caused a shift in the trophic structure towards enhanced productivity, influencing the global nannoplankton population.","author":{"name":"Leah J.Schneider, Timothy J.Bralower, Lee R.Kump"},"citation":"Leah J.Schneider, Timothy J.Bralower, Lee R.Kump. 2011. Response of nannoplankton to early Eocene ocean destratification. Palaeogeography, Palaeoclimatology, Palaeoecology, 310(3-4), 152-162. doi: 10.1016/j.palaeo.2011.06.018","edition":null,"identifier":{"id":"10.1016/j.palaeo.2011.06.018","type":"doi","url":"http://dx.doi.org/10.1016/j.palaeo.2011.06.018"},"issue":"3-4","journal":"Palaeogeography, Palaeoclimatology, Palaeoecology","pages":"152-162","pubRank":"1","pubYear":2011,"reportNumber":null,"title":"Response of nannoplankton to early Eocene ocean destratification","type":"publication","volume":"310"}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"19260","geo":{"geoType":"Feature","geometry":{"coordinates":["-65.16","1.2"],"type":"POINT"},"properties":{"easternmostLongitude":"1.2","maxElevationMeters":"-2914","minElevationMeters":"-2914","northernmostLatitude":"-65.16","southernmostLatitude":"-65.16","westernmostLongitude":"1.2"}},"locationName":"Ocean>Atlantic Ocean>South Atlantic 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