266 



SALMON OF THE KARLUK RIVER, ALASKA 



Table 24. Results of chemical analyses of stream waters in 1036 

 [Results are stated in milligrams per liter of water, Tr.=Traee] 



' Tirue a. m e\cepl bs noted. 

 3 A hove salmon. 

 3 Time p. m. 



rather constant from year !<> year. A shortage of silica in the lake water would act 

 :is a tanking factor in the production of diatoms but. would not inhibit the production 

 of other forms of phytoplankton. 



The yearly increment of soluble phosphorus is dependent, very largely, upon the 

 number of spawning fish which enter the lake each year. There was from \% to 10 

 times the concentration of phosphorus in the water at the mouths of the streams as 



