Dilution limits dissolved organic carbon utilization in the deep ocean

  title={Dilution limits dissolved organic carbon utilization in the deep ocean},
  author={Jes{\'u}s M Arrieta and Eva Mayol and Roberta L. Hansman and Gerhard J Herndl and Thorsten Dittmar and Carlos M Duarte},
Oceanic dissolved organic carbon (DOC) is the second largest reservoir of organic carbon in the biosphere. About 72% of the global DOC inventory is stored in deep oceanic layers for years to centuries, supporting the current view that it consists of materials resistant to microbial degradation. An alternative hypothesis is that deep-water DOC consists of many different, intrinsically labile compounds at concentrations too low to compensate for the metabolic costs associated to their utilization… CONTINUE READING
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