Technical Comments

Comment on “Dilution limits dissolved organic carbon utilization in the deep ocean”

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Science  18 Dec 2015:
Vol. 350, Issue 6267, pp. 1483
DOI: 10.1126/science.aab2713

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Arrieta et al. (Reports, 17 April 2015, p. 331) propose that low concentrations of labile dissolved organic carbon (DOC) preclude prokaryotic consumption of a substantial fraction of DOC in the deep ocean and that this dilution acts as an alternative mechanism to recalcitrance for long-term DOC storage. Here, we show that the authors’ data do not support their claims.

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