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Description: |
24 pages : illustrations, map ; 26 cm. |
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Supported by Fish Control Laboratory contract no. 14-16-0008-13679. |
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With Note: |
With: Effects of antimycin A and rotenone on macrobenthos in ponds / by Larry I. Houf and Robert S. Campbell. (No. 80). |
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Bibliography Note: |
Includes bibliographical references (pages 23-24). |
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Summary, Etc. Note: |
Abstract: Benthos and benthic drift were sampled periodically in Seas Branch Creek (Vernon County, Wisconsin) for 5 months before and for 2 years after the stream was treated with antimycin, and over the same period in nearby untreated Maple Dale Creek. During treatment on 4 October 1972, antimycin concentrations varied from 17 to 44 microgram/liter at the last two sampling stations in Seas Branch Creek. Populations of macroinvertebrates were drastically reduced 2 days after treatment, but all common taxa identified before treatment were present in the stream 1 year later. After 1 year, and continuing into the second year, total benthic biomass approached or exceeded that before treatment. |