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PRODUCTIVITY RELATIONS IN CARBOY MICROCOSMS 1
Author(s) -
McConnell William J.
Publication year - 1962
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1962.7.3.0335
Subject(s) - microcosm , photosynthesis , productivity , respiration , nutrient , oxygen , zoology , environmental chemistry , botany , environmental science , chemistry , biology , ecology , organic chemistry , economics , macroeconomics
Measurements of gross photosynthesis; respiration, rate of net oxygen diffusion, and organic storage are reported for 7 microcosms maintained over periods of 5 to 7 months. Average rates of gross photosynthesis ranged from 0.86 to 1.69 g O 2 /m 2 /day and were related to the amounts of inorganic nutrients added. Average final organic storage was equal to 35.6% of gross photosynthesis. Assumed photosynthetic quotients between 0.88 and 1.03 allowed the construction of oxygen budgets in which the total product of gross photosynthesis was accounted for. Some problems of establishing productive microcosms representing natural situations are also discussed.