Productivity and Populations 



283 



should be cautioned against looking upon these inverse ratios as 

 ends in themselves. They are merely the manifestation of popula- 

 tion mechanics. 



If density of population should prove to be instrumental in setting 

 the stage for catastrophic losses, prevention of such densities might 



150 



^100 



Low breeding populations 

 foUowed by high recovery rate 



i 



S 



50 



Low breeding populations 

 with low recovery rate 



High breeding populations 

 followed by low recovery rate 



100 200 



NUMBER OF GROUSE IN BREEDING SEASON 



300 



Fig. 12. Correlation of Grouse Recovery Rate with Breeding Density 

 Connecticut Hill, N.Y., 1930-1937 

 (Based on data from New York State Cons. Deft Ann. Reports and Edminster, 

 1938.) 



conceivably prevent these losses. Then the recovery rate might be 

 maintained at a consistently high level. Because of these possibilities 

 this subject received particular attention in the New York studies. 

 (Edminster, 1938; N. Y. S. Cons. Dept. Ann. Reports, 1935-37). 

 Two coverts (apart from the regular work area on Connecticut 



