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Fish Populations in Relation to Dissolved Oxygen in the Wisconsin River
Author(s) -
Coble Daniel W.
Publication year - 1982
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1982)111<612:fpirtd>2.0.co;2
Subject(s) - perch , fishery , fish <actinopterygii> , environmental science , effluent , biology , environmental engineering
Fish populations were sampled with an electroshocker, fyke nets, and small‐mesh seine in a 309‐km section of the upper Wisconsin River, where average summer dissolved oxygen concentrations at various sites ranged from less than 2 to more than 8 mg/liter. Percent sport fish, percent walleyes and yellow perch, percent Centrarchidae, number of fish species, and number of species of sport fish were all greater at sites where the average summer dissolved oxygen concentration exceeded 5 mg/liter than at sites where it was less. The results indicate that reduction of biological oxygen demand in waste effluents would benefit the sport fishery.