SYMPOSIA PAPER Published: 01 January 1981
STP27635S

Effects of Copper on the Periphyton of a Small Calcareous Stream

Source

The effect of the continuous addition of copper to a small calcareous stream at a concentration of approximately 120 μg/litre was studied for a year. Of the parameters evaluated in this study, the species composition of the periphyton was found to be the most sensitive and informative measure of the effects of copper. Two of the dominant species of algae in the stream were eliminated from the periphyton: the diatom Cocconeis placentula var. euglypta, and the filamentous green alga, Cladophera glomerata. Cocconeis placentula, which commonly contributed 85 to 98 percent of the summer diatoms in the treated reach of the stream prior to the addition of copper, was replaced by three species of diatoms, Nitzschia palea, Navicula nigrii, and N. seminulum var. hustedtii. Other species of algae that were more abundant in the copper-treated reach than in the control reach of the stream were the filamentous blue-green alga, Schizothrix calcicola, and the desmids, Cosmarium granatum and C. subprotumidum.

Author Information

Weber, CI
Environmental Monitoring and Support Laboratory, U.S. Environmental Protection Agency, Cincinnati, Ohio
McFarland, BH
Environmental Monitoring and Support Laboratory, U.S. Environmental Protection Agency, Cincinnati, Ohio
Price: $25.00
Contact Sales
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Developed by Committee: D19
Pages: 101–131
DOI: 10.1520/STP27635S
ISBN-EB: 978-0-8031-4798-0
ISBN-13: 978-0-8031-0801-1