The significance of nitrification for oceanic new production

@article{Yool2007TheSO,
  title={The significance of nitrification for oceanic new production},
  author={Andrew Yool and Adrian P. Martin and Camila Fern{\'a}ndez and Darren R. Clark},
  journal={Nature},
  year={2007},
  volume={447},
  pages={999-1002}
}
The flux of organic material sinking to depth is a major control on the inventory of carbon in the ocean. To first order, the oceanic system is at equilibrium such that what goes down must come up. Because the export flux is difficult to measure directly, it is routinely estimated indirectly by quantifying the amount of phytoplankton growth, or primary production, fuelled by the upward flux of nitrate. To do so it is necessary to take into account other sources of biologically available… 

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