Diversity dynamics of marine planktonic diatoms across the Cenozoic
DL Rabosky, U Sorhannus - Nature, 2009 - nature.com
Diatoms are the dominant group of phytoplankton in the modern ocean. They account for
approximately 40% of oceanic primary productivity and over 50% of organic carbon burial in
marine sediments 1. Owing to their role as a biological carbon pump 2 and effects on
atmospheric CO 2 levels 3, 4, 5, there is great interest in elucidating factors that influenced
the rapid rise in diatom diversity during the past 40 million years 6, 7. Two biotic controls on
diversification have been proposed to explain this diversity increase:(1) geochemical …
approximately 40% of oceanic primary productivity and over 50% of organic carbon burial in
marine sediments 1. Owing to their role as a biological carbon pump 2 and effects on
atmospheric CO 2 levels 3, 4, 5, there is great interest in elucidating factors that influenced
the rapid rise in diatom diversity during the past 40 million years 6, 7. Two biotic controls on
diversification have been proposed to explain this diversity increase:(1) geochemical …
