OCT. 1978' 



l«lly 5 1 



r 1 



Janty 



1 

 Point 



Jtr 



__, ■tt. t^r^:' ■ , 



I [-^Xt^ <1 



tnT«r 

 Bridg.^ 



Tonqual 

 . «>oint oL 



6 8 10 12 14 16 18 20 22 24 26 28 



FORK LENGTH IN <m 



PERCENT 



i00r 



ft 



A COROPHIUM SALMONIS 



B ANISOGAMMARUS CONFE ■ VI C J'.US 



F DIGESTED FISH 



J NORTHERN ANCHOVY 



n " N NEOMYSIS MERCEDIS 



15 Empty p 6NO „ MOS pHAI«OMA OREGENSIS 



O ARCHAEOMYSIS OREBNITIAI 



, AIYLUS TRIDENS 



s CRANGON SHRIWP 



" ' I POIYCHAETA 



Z DIGESTED MATERIAL 



C CAIANOID COPEPODS 



n 36 



1 Empty 



^ f 



PERCENT I O 



Figure 5. Length and food use of Pacific tomcod captured during two surveys 

 at four Columbia River estuarine sites. 



P ACIHC STAGHORN SCULPIN 



OCT 1978 



n:ll 



4 Empty 



I" 



A CORPHIUM SALMONIS 



B ANISOGAMMARUS CONFERVICOlUS 



D CANCER MAGISTER 



F DIGESTED FISH 



■ SADURlA ENTOMON 



J NORTHERN ANCHOVY 



L LONGFIN SMELT 



S CRANGON SHRIMP 



Jotty 



A 



*"• 1 ,» ,yyk 



Intsr iot 



I far* 5 , 



■ rid B « i_ 



Tongu* 



Point L 



TlT^n Qan fT.rfe.Ja. 

 n 99 



1? 14 16 18 20 2 2 24 26 



FORK LENGTH IN cm 



tjQ n : 24 



5 Empty 



PMCfNT P O 



Figure 6. Length and food use of Pacific staghorn sculpin. 



446 



