IMIS | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Printer-friendly version

Mid Pleistocene foraminiferal mass extinction coupled with phytoplankton evolution
Kender, S.; McClymont, E.L.; Elmore, A.C.; Emanuele, D.; Leng, M.J.; Elderfield, H. (2016). Mid Pleistocene foraminiferal mass extinction coupled with phytoplankton evolution. Nature Comm. 7(11970): 8 pp. hdl.handle.net/10.1038/ncomms11970
In: Nature Communications. Nature Publishing Group: London. ISSN 2041-1723, more
Peer reviewed article  

Available in  Authors 

Keyword
    Marine

Authors  Top 
  • Kender, S.
  • McClymont, E.L.
  • Elmore, A.C.
  • Emanuele, D.
  • Leng, M.J.
  • Elderfield, H.

Abstract
    Understanding the interaction between climate and biotic evolution is crucial for deciphering the sensitivity of life. An enigmatic mass extinction occurred in the deep oceans during the Mid Pleistocene, with a loss of over 100 species (20%) of sea floor calcareous foraminifera. An evolutionarily conservative group, benthic foraminifera often comprise >50% of eukaryote biomass on the deep-ocean floor. Here we test extinction hypotheses (temperature, corrosiveness and productivity) in the Tasman Sea, using geochemistry and micropalaeontology, and find evidence from several globally distributed sites that the extinction was caused by a change in phytoplankton food source. Coccolithophore evolution may have enhanced the seasonal ‘bloom’ nature of primary productivity and fundamentally shifted it towards a more intra-annually variable state at ~0.8?Ma. Our results highlight intra-annual variability as a potential new consideration for Mid Pleistocene global biogeochemical climate models, and imply that deep-sea biota may be sensitive to future changes in productivity.

All data in IMIS is subject to the VLIZ privacy policy Top | Authors