Global carbon cycle (communication arising): Metabolic balance of the open sea

@article{Karl2003GlobalCC,
  title={Global carbon cycle (communication arising): Metabolic balance of the open sea},
  author={David M. Karl and Edward A Laws and Paul Morris and Peter J. leB. Williams and Steven Emerson},
  journal={Nature},
  year={2003},
  volume={426},
  pages={32-32}
}
The rise of oxygenic photosynthesis nearly three billion years ago led to the accumulation of free oxygen and to the subsequent diversification of life on Earth; today, nearly half of all oxygen production derives from the photosynthetic activities of marine phytoplankton. The conclusion that the open sea –– and therefore much of our planet's surface –– is in a net heterotrophic metabolic state is enigmatic and is a first-order question in the global carbon cycle, as discussed by del Giorgio… CONTINUE READING
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