The Eocene Arctic Azolla bloom: environmental conditions, productivity and carbon drawdown.

@article{Speelman2009TheEA,
  title={The Eocene Arctic Azolla bloom: environmental conditions, productivity and carbon drawdown.},
  author={E. Speelman and M. L. V. van Kempen and J. Barke and H. Brinkhuis and G. Reichart and A. Smolders and J. Roelofs and F. Sangiorgi and J. W. de Leeuw and A. Lotter and J. S. Sinninghe Damst{\'e}},
  journal={Geobiology},
  year={2009},
  volume={7 2},
  pages={
          155-70
        }
}
Enormous quantities of the free-floating freshwater fern Azolla grew and reproduced in situ in the Arctic Ocean during the middle Eocene, as was demonstrated by microscopic analysis of microlaminated sediments recovered from the Lomonosov Ridge during Integrated Ocean Drilling Program (IODP) Expedition 302. The timing of the Azolla phase (approximately 48.5 Ma) coincides with the earliest signs of onset of the transition from a greenhouse towards the modern icehouse Earth. The sustained growth… Expand
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