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Journal Article

Suppression of Nitrogen Fixation by Blue-Green Algae in a Eutrophic Lake with Trace Additions of Copper

Alexander J. Horne and Charles R. Goldman
Science
New Series, Vol. 183, No. 4123 (Feb. 1, 1974), pp. 409-411
Stable URL: http://www.jstor.org/stable/1737069
Page Count: 3
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Suppression of Nitrogen Fixation by Blue-Green Algae in a Eutrophic Lake with Trace Additions of Copper
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Abstract

Nitrogen fixation by blue-green algae in highly eutrophic Clear Lake, California, was severely inhibited by trace amounts of copper. The chelation capacity of the lake is probably saturated by indigenous copper. Additions were only 1/200 of those normally used in algal control. Since nitrogen fixation provides half of the lake's annual nitrogen budget, economical eutrophication control appears possible.

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