100 



90 



80 



70 



30 



20 - 



10 - 



^ 



II I 



UIKIlUUjj. 



iiii^ 



1946 1949-A 1949-B I9SI 1952 AVERA6E-A AVERAGE-B 



CALENDAR YEAR 



IpREDATORS IIIgAME fish HpANFISH ^CATFISH HfORAGE FISH (IIIrOUGH FISH 



Figure l:— Percentage composition by weight of the various species groups in the standing 



crops of area B in 19h8, 19l;9, 19^1, and 1952. The 19h9-J^ and average-A columns 

 include gizzard shad collected in 19h9. The 19h9-B and Average-B columns repre- 

 sent the adjusted percentage composition when adult gizzard shad are excluded. 



18 



