Oligotrophy and nitrogen fixation during eastern mediterranean sapropel events

@article{Sachs1999OligotrophyAN,
  title={Oligotrophy and nitrogen fixation during eastern mediterranean sapropel events},
  author={Sachs and Repeta},
  journal={Science},
  year={1999},
  volume={286 5449},
  pages={2485-8}
}
Nitrogen isotopic measurements in fossil chlorophyll from late Pleistocene organic-rich sediments (sapropels) in the eastern Mediterranean Sea provide geochemical evidence for stratified, nutrient-depleted surface water and extensive nitrogen fixation. This evidence is reconciled with previous indications of high productivity by invoking a model of sapropel formation in which increased river discharge facilitates development of a specialized phytoplankton population whose annual mass sinking… CONTINUE READING

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