Abstract
The rate of zooplankton ammonium regeneration was measured in Great South Bay, Long Island, New York, between July 1982 and May 1984. Ammonium excretion by macrozooplankton (>200 μm) ranged from 7 μg atoms NH4 1+−N m−3 d−1 in winter to 156 μg-atoms NH4 1+−N m−3 d−1 in spring. Ammonium excretion by ctenophores was greater than or equivalent to that of macrozooplankton during the period of ctenophore biomass maximum in summer and fall. The temperature coefficient (Q10) for NH4 1+ excretion was 1.74 from 2.2 to 27.5°C for macrozooplankton and 1.63 between 17 and 26°C for the ctenophores. Ammonium nitrogen excretion by macrozooplankton and ctenophores combined, accounted for 1 to 3% of phytoplankton nitrogen requirements in summer when primary productivity was high and 39% in the spring. *** DIRECT SUPPORT *** A01BY040 00005
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Park, Y.C., Carpenter, E.J. Ammonium regeneration and biomass of macrozooplankton and ctenophores in Great South Bay, New York. Estuaries 10, 316–320 (1987). https://doi.org/10.2307/1351889
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DOI: https://doi.org/10.2307/1351889