CALIFORNIA (Cont. ) 



National Science Foundation cooperating; Felt Lake, Stanford University 

 Campus; began February 1955, to close July 1958; Donald E. Wohlschlag, 

 Leader. 



Address inquiries to: As in No. 1 above. 



3. Seasonal Changes in Growth Rates of Bluegill Sunfish in a Fluctuating Reservoir 

 The objectives are: (1) To determine the amovmts of growth which blue- 

 gills of various sizes and ages experience during different seasons of the year. 

 (2) To deternnine, if possible, the extent to which spring and late sunnmer 

 spawned fish contribute to the larger size groups. 



National Science Foundation cooperating; Felt Lake, Stanford University 

 Campus; began February 1955, closed December 1956; Paul M. Briins, 

 Leader. 



Address inquiries to: As in No. 1 above. 



University of California 



1. Sagehen Creek Project 



Long-term ecological studies of the distribution and abundance of fish 

 populations in Sagehen Creek were started in 1951. These involve pumping 

 and draining 10 sections of stream each season to follow cycles in trout popu- 

 lations. 



Allied studies are (1) Beaver-trout relationships by Richard Card. 



(2) Creel census to determine exploitation rates of naturally propagated trout. 



(3) Studies of the effects of winter conditions on survival of trout, including 

 the factors of ground water, anchor ice, frazil ice, shelf ice, and snow. 



(4) Beaver food supplies by Joe Hall, completed in June 1956. 



Tahoe National Forest; began Jxine 1951, indefinite; $10,000; P. R. Needham 

 and Richard Card, Leaders. 



Address inquiries to: Paul R. Needham, Department of Zoology - Fisher- 

 ies, University of California, Berkeley 4, California. 



U. S. Fish and Wildlife Service, Branch of Fishery Biology 



1. Survival and Vitality of Hatchery-reared Trout in Streams 



The objectives of this project are to assess the survival and physical 

 vitality of rainbow trout hatched and reared at several hatcheries and tested 

 under a variety of controlled outdoor and laboratory conditions, and to deter- 

 mine the factor or factors in the hatcheries and in the field that limit their 

 survival. 



California Department of Fish and Game and Nevada Fish and Game 

 Commission cooperating; Convict Creek Experinnent Station; began July 1956, 

 indeifnite; $13,000; Reed S. Nielson, Leader; reports available. 



Address inquiries to: Reed S. Nielson, U. S. Fish and Wildlife Service, 

 118 West 2nd Street, Room 26, Reno, Nevada. 



2. Productivity of High Sierra Lakes 



The objective of this project is to investigate the relationship between 

 physicochemical influences and biological productivity and to develop new 

 field and laboratory methods and techniques for the assessment of lake pro- 

 ductivity. 



California Department of Fish and Game and Nevada Fish and Game 

 Commission cooperating; Convict Creek Basin; began July 1953, indefinite; 

 $13,000; Norman Reimers, Leader; reports available. 



Address inquiries to: Reed S. Nielson, as in No. 1 above. 



10 



