ILLINOIS (Cont. ) 



3. Interspecific Competition Among Pond Fishes. 



The two ponds used in this experiment (2. 5 and 14 acres) are subjected to 

 moderate fishing pressures. At 2-year intervals, the ponds are drained and 

 the fish populations of several species of warm-water fishes are artificially 

 adjusted with the objective of studying various degrees of interspecific competi- 

 tion. 



University of Illinois cooperating; State 4-H Club Camp at Monticello, Piatt 

 County; began 1947, indefinite; $1,500; George W. Bennett, Leader. 



Address inquiries to: George W. Bennett, as in No. 1 above. 



4. The Value of Pond Fertilization as a Means of Improving Fishing. 



Six ponds (three fertilized and three controls) are being tested through con- 

 trolled fishing to determine the amount of improvement attributable to the addi- 

 tion of inorganic fertilizer. 



University of Illinois Agriculture Experiment Station cooperating; Dixon 

 Springs Station, Pike County; began 1946, indefinite; $1,000; Donald F. Hansen, 

 Leader. 



Address inquiries to: Dr. Donald F. Hansen, Assistant Aquatic Biologist, 

 Natural Resources Building, Urbana, 111. 



5. Fish Management in Reservoirs on Forest Soils. 



Techniques are being developed for the management of the bass-bluegill 

 combination in an impoundment built over clay and rock land of poor quality in 

 Lake Glendale in the Shawnee National Forest. 



Pope County; began 1941, indefinite; $2,000; Donald F. Hansen, Leader; 

 reports available. 



Address inquiries to: Donald F. Hansen, as in No. 4 above. 



6. Abundance and Distribution of Native Lampreys. 



The species of lampreys native to Illinois Rivers are being studied to de- 

 termine their abundance and distribution, also the locations of potential spawn- 

 ing streams, should the sea lamprey invade the State's rivers from Lake Michigan. 



Departnnent of Conservation cooperating; statewide; began 1951, indefinite; 

 $1,000; William C. Starrett, Leader. 



Address inquiries to: Dr. William C. Starrett, Associate Aquatic Biologist, 

 Natural History Survey Laboratory, Havana, 111. 



7. Collection of Connnnercial Fisheries Statistics. 



An annual inventory is being made of the commercial fish taken from the 

 larger rivers of the State. 



Department of Conservation cooperating; statewide; began 1948, indefinite; 

 $5,000; William C. Starrett, Leader; reports available. 



Address inquiries to: William C. Starrett, as in No. 6 above. 



8. An Investigation of the Sport and Commercial Fisheries of Some Flood Plain Lakes 

 of the Illinois River: Chautauqua, Quiver, and Matanzas Lakes. 



The values of sport and contimercial fisheries of the Illinois River bottomland 

 lakes will be determined while management practices designed to increase the 

 yield of sport and commercial fishes are being developed. The biology of the 

 fishes in the lakes is being studied and the dynamics of the fish populations are 

 being estimated. 



Department of Conservation and the U. S. Fish and Wildlife Service cooper- 

 ating; Mason County; began 1949. indefinite; $10,000; William C. Starrett, Leader; 

 reports available. 



Address inquiries to: William C. Starrett, as in No. 6 above. 



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