Contribution of Fish to the Marine Inorganic Carbon Cycle

  title={Contribution of Fish to the Marine Inorganic Carbon Cycle},
  author={R. W. Wilson and F. J. Millero and J. R. Taylor and Patrick J. Walsh and V{\"o}ge Christensen and Simon Jennings and Martin Grosell},
  pages={359 - 362}
Oceanic production of calcium carbonate is conventionally attributed to marine plankton (coccolithophores and foraminifera). Here we report that marine fish produce precipitated carbonates within their intestines and excrete these at high rates. When combined with estimates of global fish biomass, this suggests that marine fish contribute 3 to 15% of total oceanic carbonate production. Fish carbonates have a higher magnesium content and solubility than traditional sources, yielding faster… 

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