Portland State University. Department of Biology
Date of Award
Master of Science (M.S.) in Biology
1 online resource (44 pages)
Plants -- Effect of copper on, Selenastrum capricornutum, Copper sulfate
The green alga, Selenastrum capricornutum Printz, was used in an algal bioassay to determine the toxic properties of copper in various natural lake waters of Oregon. Lake water was collected and brought back to the laboratory where it was treated with various copper concentrations and inoculated with a cell suspension of the test alga. Growth of the alga was determined by direct cell counts. The copper ion activity, pH, and absorbance of the test cultures were also determined. The growth of the alga was ·found to depend upon the water tested and also upon the copper concentration used.
Schulz, Gerald Eugene, "Growth of Selenastrum capricornutum Printz in Natural Waters Treated with Copper Sulfate" (1973). Dissertations and Theses. Paper 1587.