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Recent studies of the ocean nitrogen cycleThe nitrogen cycle in the ocean is dominated by the activities of organisms. External nitrogen inputs from land and from the atmosphere are small compared with rates of consumption and production by organisms and with rates of internal rearrangements of nitrogen pools within the ocean. The chief reservoirs of nitrogen are, in decreasing order of size: nitrogen in sediments, dissolved N2, nitrate, dissolved organic nitrogen (DON), particulate organic nitrogen (PON) (mostly organisms and their by-products). The biogenic fluxes of nitrogen were reviewed. The rate of PON decomposition in the surface layer must be comparable to the rate of ammonium consumption; and at the same time the nitrate consumption rate will be similar to the rates of: (1) sinking of PON out of the surface layer and its decompositon at depth, (2) the rate of nitrification at depth, and (3) the rate of nitrate return to the surface layer by upwelling.
Document ID
19850005884
Document Type
Other
Authors
Eppley, R. W. (Scripps Institution of Oceanography San Diego, CA, United States)
Date Acquired
August 12, 2013
Publication Date
January 15, 1984
Publication Information
Publication: JPL The interaction of Global Biochemical Cycles
Subject Category
OCEANOGRAPHY
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19850005874Analytic PrimaryThe Interaction of Global Biochemical Cycles