WISCONSIN (Cont. ) 

 Fish and Wildlife Service, Branch of Fishery Biology 



1. Fluctuations, Interrelationships and Movements of Fish Populations (Projects 17 and 

 18). 



The objective of this project is to follow the fluctuations in the age, growth, size, and 

 abundance of the different species, commercial and non-connmercial; and to ascer- 

 tain through marking experiments and morphological studies whether local races 

 and stocks exist, and the extent of movements and intermingling of different seg- 

 ments of the populations. 



Lakes Huron, Superior, and Michigan; Hdqtrs. : Sturgeon Bay, Wise. ; began 1947, 



continuing; Leonards. Joeris, Leader. 

 Address correspondence to: James W. Moffett, Chief, Great Lakes Fisheries 



Investigations, 1220 E. Wash. St., Aim Arbor, Mich. 



2. Linrinology of Green Bay (Proj. 19). 



The objective of this project is to make a limnological reconnaissance with special 

 reference to physical conditions -- seiches, temperatures currents--in the 

 hydrographically complex control region in relation to the distribution and move- 

 ments of fish. 



Hdqtrs. : Sturgeon Bay, Wise. ; began May 1950, continuing; Leonard S. Joeris, 

 Leader . 



Address correspondence to: James W. Moffett, Chief, Great Lakes Fisheries Investi- 

 gations, 1220 E. Wash., St., Ann Arbor, Mich. 



WYOMING 

 Game and Fish Commission 



1. The Survival of Hatchery Reared and Wild Fish Before and After the Installation of 

 Stream Improvement Devices (FA: F-l-R in part). 



Physical and biological conditions have been determined for several trout streams in 

 their natural state. The fish population has been sampled by means of electrical 

 shocking apparatus to determine relative abundance and species composition. A 

 number of stream improvement devices are being placed in experimental sections 

 of the streams. To be considered are the changes these structures induce upon 

 the stream bottom, their resistance to high water, and their effects on the resi- 

 dent fish population. 



Trout Creek, Sweetwater County, and Granite Creek, Teton County; began August 1, 

 1952, to be completed December 31, 1954; $9,000; Grant. O. Hagen, Project Leader. 



Address correspondence to: Floyd M. Blunt, Coordinator, Wyoming Game and Fish 

 Commission, Cheyenne, Wyo. 



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