Jan. Feb. Mar. 

 1969 



Apr. May June July Aug. Sept. Oct. Nov. Dec. 



1968 



Month and year 



Figure 4-37. Monthly variation in density of total zooplankton and oi Acartia in estuarine waters of Louisiana 

 from April 1968 through March 1969 (Gillespie 1971). 



Polychaetes 

 Remaining infauna 



100 r 



in <n 



a. a 



W) u> 



A S N 



Month and year 



Figure 4-38. Proportion of polychaetes in the total infauna in grab samples collected in June 1973 through 

 March 1974 along the southeastern Louisiana coast (Ragan 1976). 



211 



