APPENDIX D 283 



APPENDIX D 



Current and Optimum Catch and 

 Escapement Estimates For Salmon 



Estimates of total production from Canadian salmon 

 stocks should account for commercial harvests by domes- 

 tic and foreign fishermen, catches in the sport and Indian 

 fisheries, and escapements. Complete data on these com- 

 ponents of production have only recently begun to 

 become available, and are not equally reliable, so are 

 inadequate for measuring long-term trends in stocks. We 



can. however, draw some inferences from the records of 

 commercial landings. Figures D-1, D-2 and D-3 show the 

 commercial landings of sockeye, chum, pink, coho and 

 Chinook salmon, since 1905. The trends in these figures 

 provide some perspective for the following commentary 

 and data on the condition of the stocks of each species. 



Figure D-1 Commercial landings of sockeye salmon since 1905 



20r 



1905 1910 1915 

 Source: See Footnote 1 . 



1920 



1925 



1930 



1935 



1940 



1945 



1950 



1955 



1960 



1965 



1970 



1975 



1980 



