MICHIGAN (Cont. ) 



11. Movements of Lake Trout in Lake Superior (Proj. 10). 



Through the tagging of both legal- sized and under -sized lake trout in different 

 regions of Lake Superior to determine the extent of migrations with special 

 reference to the possible presence of local races and movements across inter- 

 state and international boundaries. 



Hdqtrs. : Ann Arbor , Mich. ; began June 1950, continuing; Pa\il H. Eschmeyer, Ldr. 

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

 Investigations, 1220 E. Washington St. , Ann Arbor, Mich. 



12. Linruiological Studies of Lake Michigan (Proj. 11). 



This project is aimed at accumulating information on the physical, chemical, and 

 biological limnology of the Lake for the purpose of establishing typical condi- 

 tions and their seasonal changes and of defining major limnological problems 

 and determining the best approach to obtain solutions to them, through a series 

 of transects and repeated occupancy of established stations. 



Operations of research vessel Cisco; began summer 1951, continuing. 

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

 Investigations, 1220 E. Washington St. , Ann Arbor, Mich. 



13. Experimental Fishing in Lake Michigan (Proj. 12). 



The objective is to test various types of experimental gear (as specially constructed 

 gill nets, bottom trawls, mid-water trawls) to learn their efficiency and limita- 

 tions in various situations and to obtain information on the distribution and abun- 

 dance of various species with special reference to the smaller parasitic stages 

 of the sea lamprey, small stages of commercially important species, and small 

 species not sampled by commercial gear. 



Operations of research vessel C sco; began July 1952, continuing. 

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

 Investigations, 1220 E. Washington St. , Ann Arbor, Mich. 



14. Food Relations of Lake Trout (Proj. 14). 



The objective of this project is to determine from stomach contents the food rela- 

 tionships and the utilization of the potential foods, including the amount, fre- 

 quency of occurrence, and variation as related to size of trout, seasons, locali- 

 ties and depths of water. 



Hdqtrs. : Marquette, Mich. ; began January 1950, to be completed in December 1954; 



Leo F. Erkkila, Leader. 

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



Investigations, 1220 E. Washington St. , Ann Arbor, Mich. 



15. Life History Studies of Lake Superior Fishes (Proj. 15). 



The objectives of this project are to obtain fundamental information on the life histories 

 of commercially important species in such matters as identity of populations, 

 movements, seasonal and local abundance, fluctuations in growth and strength 

 of year classes. 



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