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The Relation Between New Production, as Estimated by Exported Nitrogen and total Primary Production

  • J. N. Downs
  • J. W. Murray
Part of the Environmental Science Research book series (ESRH, volume 43)

Abstract

Under steady-state conditions, the f-ratio (new:total primary production), should be equivalent whether calculated with new production measured from allochthonous nitrogen uptake, or from particulate nitrogen export from the euphotic zone. In comparing several marine sites; Monterey Bay, the eastern equatorial Pacific, and the central north Pacific gyre, the f-ratios based on PON fluxes and Redfield ratio-converted 14C-uptake primary production exhibit a direct relation to primary production; in general, higher f-ratios are found with the higher primary production and vice versa. However, some data sets show significant variation. At times, (early upwelling in Monterey Bay, likely a non steady-state) this relation does not hold, and over much of the year, primary production and the f-ratio are inversely related.

Keywords

Gulf Stream Euphotic Zone Image East Total Primary Production Subsurface Chlorophyll Maximum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer Science+Business Media New York 1992

Authors and Affiliations

  • J. N. Downs
    • 1
  • J. W. Murray
    • 1
  1. 1.Monterey Bay Aquarium Research InstitutePacific GroveUSA

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