THREADFIN SHAD 



DELTA SMELT 



1979 



1980 



1982 



Figure 6— Capture rates of seasonal species within Suisun Marsh. 

 Mean catch per effort for each month described as percent of total 

 for each species. 



FISHERY BULLETIN: VOL. 84, NO. 1 



LONGFIN SMELT 



STAGHORN SCULPIN 



1979 



years of the study. A similar pattern was shown by 

 threespine stickleback, which also had a relatively 

 large positive loading on this component. The fourth 

 component loaded heavily on delta and longfin smelt, 

 and to a lesser extent on threadfin shad. This is the 

 winter seasonal group identified in the previous 

 analysis. 



DISCUSSION 



During the 5-yr study period, the fish assemblage 

 of Suisun Marsh had the following character- 

 istics: 



1. There was a strong seasonal pattern of total fish 



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