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.
Riley, L. E. and Ostrofsky, M. L.
"The effect of elevated temperature on copper toxicity to the thermophilic alga Synechococcus lividus (Cyanophyceae),"
Great Basin Naturalist: Vol. 41
, Article 15.
Available at: https://scholarsarchive.byu.edu/gbn/vol41/iss2/15