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Gross Primary Production: aquatic ecosystems = ?

BruceRat brucerat at aol.com
Mon Apr 15 08:31:16 EST 1996

I am looking for a value for Gross Primary Productivity in aquatic
ecosystems.  Though NET Primary Productivity estimates are common (~2000 g
m-2 yr-1 for swamp and marsh) (Begon, Harper and Townsend, 1990), I am
seeking a value for total photosynthetically fixed energy, without
subtracting for respiration.  In my case, I measured not increase in
over a year, but increase in dissolved oxygen over a matter of hours.  Any
suggestions out there?
Bruce Ratcliffe, Fresno

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