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- W2015891195 abstract "Research Article| April 01, 2006 Shelf and open-ocean calcareous phytoplankton assemblages across the Paleocene-Eocene Thermal Maximum: Implications for global productivity gradients Samantha J. Gibbs; Samantha J. Gibbs 1Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Search for other works by this author on: GSW Google Scholar Timothy J. Bralower; Timothy J. Bralower 1Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Search for other works by this author on: GSW Google Scholar Paul R. Bown; Paul R. Bown 2Department of Earth Sciences, University College London, London WC1E 6BT, UK Search for other works by this author on: GSW Google Scholar James C. Zachos; James C. Zachos 3Earth Science Department, University of California–Santa Cruz, Santa Cruz, California 95064, USA Search for other works by this author on: GSW Google Scholar Laurel M. Bybell Laurel M. Bybell 4U.S. Geological Survey, 926 National Center, Reston, Virginia 20192, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Samantha J. Gibbs 1Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Timothy J. Bralower 1Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Paul R. Bown 2Department of Earth Sciences, University College London, London WC1E 6BT, UK James C. Zachos 3Earth Science Department, University of California–Santa Cruz, Santa Cruz, California 95064, USA Laurel M. Bybell 4U.S. Geological Survey, 926 National Center, Reston, Virginia 20192, USA Publisher: Geological Society of America Received: 09 Nov 2005 Revision Received: 24 Nov 2005 Accepted: 14 Dec 2005 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2006) 34 (4): 233–236. https://doi.org/10.1130/G22381.1 Article history Received: 09 Nov 2005 Revision Received: 24 Nov 2005 Accepted: 14 Dec 2005 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Samantha J. Gibbs, Timothy J. Bralower, Paul R. Bown, James C. Zachos, Laurel M. Bybell; Shelf and open-ocean calcareous phytoplankton assemblages across the Paleocene-Eocene Thermal Maximum: Implications for global productivity gradients. Geology 2006;; 34 (4): 233–236. doi: https://doi.org/10.1130/G22381.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Abrupt global warming and profound perturbation of the carbon cycle during the Paleocene-Eocene Thermal Maximum (PETM, ca. 55 Ma) have been linked to a massive release of carbon into the ocean-atmosphere system. Increased phytoplankton productivity has been invoked to cause subsequent CO2 drawdown, cooling, and environmental recovery. However, interpretations of geochemical and biotic data differ on when and where this increased productivity occurred. Here we present high-resolution nannofossil assemblage data from a shelf section (the U.S. Geological Survey [USGS] drill hole at Wilson Lake, New Jersey) and an open-ocean location (Ocean Drilling Program [ODP] Site 1209, paleoequatorial Pacific). These data combined with published biotic records indicate a transient steepening of shelf-offshelf trophic gradients across the PETM onset and peak, with a decrease in open-ocean productivity coeval with increased nutrient availability in shelf areas. Productivity levels recovered in the open ocean during the later stages of the event, which, coupled with intensified continental weathering rates, may have played an important role in carbon sequestration and CO2 drawdown. You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
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- W2015891195 title "Shelf and open-ocean calcareous phytoplankton assemblages across the Paleocene-Eocene Thermal Maximum: Implications for global productivity gradients" @default.
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