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Effects of some inorganic elements on nitrogen-fixation in blue-green algae and some ecological aspects of pollution

✍ Scribed by Dr. L. E. Henriksson; Dr. E. J. Dasilva

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
441 KB
Volume
18
Category
Article
ISSN
0233-111X

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✦ Synopsis

Abstract

Nitrogen‐fixation by two species of Nostoc, one of them a lichen phycobiont, was generally stimulated by low concentrations of arsenic, cadmium, nickel, lead, palladium, and zinc. Higher concentrations (0.025 to 0.125 ppm) of arsenic, nickel, and palladium were also stimulatory; however, higher concentrations of cadmium, lead, and zinc tended to inhibit fixation. With the exception of palladium and zinc at low concentrations these six tested elements tended to inhibit nitrogen‐fixation in Chlorogloea fritschii and Westiellopsis sp.

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