CHAO and MUSICK: LIFE HISTORY OF JUVENILE SCIAENID FISHES 

 2 0- 



N 2 ' °' 



o 



0.0- 



JHL 



C " r D~ 



F ' G ' 



GRAND 

 MEAN 



1.5- 



Wll o 0.5- 



_Q 



NO 

 SAMPLE 



i — I r 



F G 



GRAND 

 MEAN 



 1.5 



s - 



§ 0.5- 



T 



n n 



_d 



D E 



APRIL 1973 



GRAND 

 MEAN 



- 20 ~ 



N 2 i.o- 



3 0.0 — 



oJ] 



GRAND 

 MEAN 



2.0- 



Ch^ i.o- 



o.o- 





-P- 



rm 



_ _ ftDAMh 



f "^T -1 " 



GRAND 

 MEAN 



- 2.0- 



S 2 ,.o- IS 



o _ O 



0.0- 



fcj 



i ra r 



J rn I 



£ 



D E 



JULY 1973 



ill , rM . E JJ 



1 ~ G 



GRAND 

 MEAN 



N 



2.5- 



x 1.5- 



o 



o 0.5- 



II 



B 



M 



^ 



GRAND 

 MEAN 



- 2.0- 



Chs I -o- 



o - 



- 1 0.0— 



^ 1 1 B0 



,-.i ^ 



p- i ^r f 



GRAND 

 MEAN 



--. 2.0- 



S 2 ,.o- 



3 o.o- 



_E3_ 



P - 



ri 



Lp_ 



F*?^ 



C D E 



OCT. 1973 



GRAND 

 MEAN 



FIGURE 3. — Seasonal abundance of four juvenile sciaenids with depth and distance upstream in the York 

 River. Mean numerical catch per tow of each substratum expressed as log (x + 1). Strata: A-G; substrata: N 

 = north shoal, Ch = channel, and S = south shoal. 



663 



