Reports

Biological Nitrogen Fixation in Lake Erie

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Science  03 Jul 1970:
Vol. 169, Issue 3940, pp. 61-62
DOI: 10.1126/science.169.3940.61

Abstract

Biological nitrogen fixation, as determined by acetylene reduction, occurs in Lake Erie. Fixation potential by blue-green algae in situ in water and by bacteria in collected sediments was demonstrated. Nitrogen-fixing activity occurred from June through November suggesting that it is significant over the extremes of seasonal variation in light, temperature, and nutrients.

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