TY - JOUR
T1 - The planktonic foraminiferal response to the Paleocene-Eocene thermal maximum on the Atlantic coastal plain
AU - Livsey, Caitlin M.
AU - Babila, Tali L.
AU - Robinson, Marci M.
AU - Bralower, Timothy J.
N1 - Funding Information:
Research funded by NSF OCE-1416663. We acknowledge helpful discussions with James Zachos, Kate Freeman and Mark Patzkowsky. We appreciate the valuable help from Clay Kelly on foraminiferal taxonomy. We thank Ellen Thomas for providing sediment samples from the Bass River core. We thank Cheyne Hirota, Nathan Marshall, Rob Franks, Colin Carney and UCSC Stable Isotope Laboratory for technical assistance. This paper greatly benefited from the comments from two anonymous reviewers and the editorial handling by Richard Jordan. This research was supported in part by the USGS Land Change Science Program. Any use of trade, firm, or product names is for descriptive purposed only and does not imply endorsement from the U.S. Government.
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2019/1
Y1 - 2019/1
N2 - Planktonic foraminiferal assemblages in two cores from Maryland and New Jersey show evidence for significant changes in surface ocean habitats on the continental shelf during the Paleocene-Eocene Thermal Maximum (PETM). At both sites, significant assemblage shifts occur immediately before the onset of the event. These changes include the appearance of abundant triserial/biserial species as well as rare excursion taxa, which are limited to the interval of the carbon isotope excursion at deep-sea sites. The assemblage shifts signal the development of new habitats immediately prior to the onset of the PETM, likely involving warming, surface ocean acidification, increased stratification and oligotrophy. A sharp increase in diversity at the onset of the event is interpreted as a further increase in stratification and warming, as well as increased water depth and more eutrophic conditions. Finally, we observe variant morphologies of several planktonic foraminifera, which may also signal the response of the assemblage to environmental perturbation.
AB - Planktonic foraminiferal assemblages in two cores from Maryland and New Jersey show evidence for significant changes in surface ocean habitats on the continental shelf during the Paleocene-Eocene Thermal Maximum (PETM). At both sites, significant assemblage shifts occur immediately before the onset of the event. These changes include the appearance of abundant triserial/biserial species as well as rare excursion taxa, which are limited to the interval of the carbon isotope excursion at deep-sea sites. The assemblage shifts signal the development of new habitats immediately prior to the onset of the PETM, likely involving warming, surface ocean acidification, increased stratification and oligotrophy. A sharp increase in diversity at the onset of the event is interpreted as a further increase in stratification and warming, as well as increased water depth and more eutrophic conditions. Finally, we observe variant morphologies of several planktonic foraminifera, which may also signal the response of the assemblage to environmental perturbation.
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U2 - 10.1016/j.marmicro.2018.12.001
DO - 10.1016/j.marmicro.2018.12.001
M3 - Article
AN - SCOPUS:85058558936
SN - 0377-8398
VL - 146
SP - 39
EP - 50
JO - Marine Micropaleontology
JF - Marine Micropaleontology
ER -