486 



Fishery Bulletin 92(3). 1994 



values only in Area 3A, particularly during winter 

 (Figs. 5F and 6F). Therefore, warmer temperatures 

 may result in increased survival of eggs and/or lar- 

 vae of petrale sole in Area 3A. 



bia River plume. Although high correlations between 

 filtered YCS and the salinity index were detected for 

 winter and summer, no significant correlations were 

 observed for original series (Figs. 5G and 6G). 



Nearshore salinity index This index reflects 

 nearshore salinity variations caused by the Colum- 



O 



Ui 



BC 

 c 

 

 o 



cr 



UJ 

 Ll 

 LL 



Q 



ZZ 

 < 



IX 



CO 



< 



cr 

 < 



LJJ 



a 



Original Series 



MEAN SEA LEV CI 



CUBE OF WMD SPEED 



WINTER SPRINGSUMMER FALL 



WINTER SPRINGSUMMER FALL 



4 3 



-0-4 

 4 6 



NORTHWARD EUlh TRANSPORT SEA SURFACE TEMPERATURE 



06 



bl:--_ 



WINTER SPRINGSUMMER FALL 



NORTHWARD SVERDRUP TRANSPORT 

 06 



-02 

 -C4 

 -0 6 



i-r- 



Kl 



't. 2 



v, z 



WINTER SPRINGSUMMER FALL 



NEWSHORE SALJNrTT IWTXI 



□ « 



4 : 



-C * 



-C 6 



^^ 



WINTER SPRING SWIM EJl FALL WINTER SPRINGSUMMER FALL 



OFFSHORE EXMAN TRANSPORT SURFACE ATMOSPHERIC PRESSURE 



_«*M 



"■fe 



WINTER SPRINGSUMMER FALL 



6 

 0» 

 02 

 00 



■OS 



-04 



%:^ 



&2 



WINTER SPRING SUMMER FALL 



SEASON 



Figure 5 



Spearman's correlations between year-class strength 

 indices of petrale sole, Eopsetta jordani, and seasonal 

 averages of environmental factors lagged to the first 

 year of life (Table 2). Correlation for cohorts 1959 to 

 1977 are compared for Pacific States Marine Fish- 

 en rs Cnm mission areas 2B (dark bar) and 3A (light 

 ban. Dashed lines correspond to P = 0.05 for indi- 

 vidual correlations. 



Sea surface atmospheric pressure Nearshore trans- 

 port and water properties such as temperature, sa- 

 linity and density are greatly influenced by the North 



z 

 o 

 h- 

 < 



cr 

 EC 

 O 

 U 



u 



UJ 

 EC 



< 



cr 



03 



zz 

 < 



a 



< 



0. 



CO 



Filtered Series 



CU8E OF WIND SPEED 



WINTER SPRINGSUNNER FALL 

 NORTHWARD if.MUi TRANSPORT 



00 



-o : 



■04 



•0.6 



1 



w 



WINTERSPRJNCSUHNER FALL 

 SEA SURFACE TEMPERATURE 



B 





WINTER SPRINGSUNNER FALL 



NORTHWARD SVERDRUP TRANSPORT 



WINTER SPRINGSUNNER FALL 



NEARSHORE SALINITY INOEI 



-o : 



-0 4 



-0.6 



■M* 



WINTER SPRINCSUHHER FALL 

 OFFSHORE EKHAK TRANSPORT 



WINTER SPR1N0SUNNER FALL 

 SURFACE ATVOSPHEJUC PRESSURE 



5 



■oa 



-o * 



I 



Tod 2 ^ 



-"feH 



WINTER SPRINGSUNNER FALL 





 4X5 



-04 



4 6 



TT 



E^-^ 



WINTER SPRINGSUNNER FALL 



SEASON 



Figure 6 



Spearman's correlations between filtered year-class 

 strength indices of petrale sole, Eopsetta jordani, and 

 filtered seasonal averages of environmental factors 

 lagged to the first year of life for cohorts from 1959 

 to 1977 (Table 2). Areas compared are Pacific States 

 Marine Fisheries Commission 2B (dark bar) and 3A 

 (light bar). Significance of correlations was based on 

 original series (see analytical methods). 



