ABUNDANCE 



ZONE 1 



ZONE 2 — 

 ZONE 3 ■■•• 



o 



X 



LU 



> 



en 



F MAM 



1973 



Figure 5. Total zooplankton densities averaged for each zone in San Antonio 

 Bay, Texas, during 1973, along with the 10-day average river flow rates for 

 each sampling date. 



522 



