||Influence of advanced wastewater treatment on the fishery resource of Shagawa Lake, Minnesota /
Swenson, William A.,
||Wisconsin Univ.-Superior. Dept. of Biology.;Corvallis Environmental Research Lab., OR.
|| Corvallis Environmental Research Laboratory, Office of Research and Development, Environmental Research Laboratory,
Sewage disposal in rivers, lakes, etc--Minnesota--Shagawa Lake ;
Sewage--Environmental aspects ;
Limnology--Minnesota--Shagawa Lake ;
Fishes--Effect of water pollution on--Minnesota--Shagawa Lake ;
Lake restoration ;
Sewage disposal in rivers, lakes, etc--Minnesota--Lake Shagawa ;
Limnology--Minnesota--Lake Shagawa ;
Fishes--Effect of water pollution on--Minnesota--Lake Shagawa ;
Fresh water fishes ;
Sewage treatment ;
Water pollution ;
Shagawa Lake ;
Inorganic phosphates ;
Feeding habits ;
Food habits ;
Mathematical models ;
Trophic level ;
Stizostedion vitreum ;
Perca flavenscens ;
Esox lucius ;
||Region 10 Library/Seattle,WA
||Some EPA libraries have a fiche copy filed under the call number shown.
||vii, 86 pages : illustrations, figures, tables, 1 map ; 28 cm.
This project was conducted to measure the response of the warmwater fish populations in Shagawa Lake, Minnesota, to altered trophic conditions brought about by phosphate removal from sewage discharges entering the lake. The project also served to provide basic information on the mechanisms through which a lake's trophic status controls its fish species complex. Abundance, distribution, growth, and feeding interrelationships of walleye (Stizostedion vitreum), northern pike (Esox lucius), yellow perch (Perca flavenscens), and lake herring (Coregonus artedii) were described in relation to changes in prey density and other environmental factors.
"March 1980." "Project Officer: Paul D. Smith." Includes bibliographical references (pages 74-78).