Nannoplankton extinction and origination across the Paleocene-Eocene thermal maximum

Gibbs, Samantha J., Bown, Paul R., Sessa, Jocelyn A., Bralower, Timothy J. and Wilson, Paul A. (2006) Nannoplankton extinction and origination across the Paleocene-Eocene thermal maximum. Science, 314, (5806), 1770-1773. (doi:10.1126/science.1133902).


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The Paleocene-Eocene Thermal Maximum (PETM, 55 million years ago) was an interval of global warming and ocean acidification attributed to rapid release and oxidation of buried carbon. We show that the onset of the PETM coincided with a prominent increase in the origination and extinction of calcareous phytoplankton. Yet major perturbation of the surface-water saturation state across the PETM was not detrimental to the survival of most calcareous nannoplankton taxa and did not impart a calcification or ecological bias to the pattern of evolutionary turnover. Instead, the rate of environmental change appears to have driven turnover, preferentially affecting rare taxa living close to their viable limits.

Item Type: Article
ISSNs: 0036-8075 (print)
Related URLs:
Subjects: Q Science > QE Geology
G Geography. Anthropology. Recreation > GC Oceanography
Divisions: University Structure - Pre August 2011 > School of Ocean & Earth Science (SOC/SOES)
ePrint ID: 43923
Date Deposited: 02 Feb 2007
Last Modified: 06 Aug 2015 02:36

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