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Great Basin Naturalist

Abstract

The hypothesis that temperature influences the toxicity of copper to thermophilic Cyanophyceae was tested in a laboratory study with Synechococcus lividus. This thermophile was tested at copper concentrations from 0 to 200 µg/1, and temperatures from 40.0 to 50.0 C. It was found that an interaction between increased copper and temperature significantly decreased the rate of carbon assimilation, chlorophyll content, and photosynthetic efficiency.

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