Antarctic phytoplankton turnover

Researchers report that over the past 15 million years diatoms in the Southern Ocean experienced five major pulses of extinction and speciation that were linked with regional cooling events, and suggest that Antarctic phytoplankton communities are resilient to baseline glacial-interglacial climatic variability but sensitive to major climatic changes stemming from the combined effects of atmospheric carbon dioxide fluctuations and changes in Earth’s orbit and tilt. - Read at PNAS.org

Article #16-00318: “Southern Ocean phytoplankton turnover in response to stepwise Antarctic cooling over the past 15 million years,” by James S. Crampton et al.