WILLASON ET. AL.: ZOOPLANKTON IN CALIFORNIA CURRENT 



Table 6. — Calanus pacificus. Mean abundance and laminarinase activity (LA) of stage V copepodites 

 and females from each region. Numbers in parentheses are one standard deviation. Log values were 

 used for statistical comparisons. 



indicates value(s) significantly greater than those of other regions (P < 0.05, r-test). 



41/ 



Figure 9— Calanus pacificus Stage V 

 copepodites, abundance Expressed 

 as number of copepods per m 3 . 



Calanus pacificus V 



Abundance - 



copepods/m3 



San 

 Diego 



38 c 



36' 



34 c 



32 c 



124 c 



122 c 



120 c 



118 c 



stations to 3,855 at the station adjacent to Point Con- 

 ception. LA of replicate groups of 50 copepods from 

 the same station were very similar indicating that 

 the variability was due to differences between sta- 

 tions (P < 0.05, ANOVA). 



Calanus pacificus LA also showed large differ- 

 ences among the four hydrographic regions. Both 

 females and stage V copepodites from the northern 

 nearshore region (II) had significantly higher levels 



of LA than copepods from the other regions (Table 

 6). Copepods in the southern offshore region had the 

 lowest levels. The contour maps of C. pacificus LA 

 show patches of copepods with high LA located ad- 

 jacent to and just south of Point Conception and off 

 Monterey Bay (Figs. 10, 11). These areas were 

 located near the regions of highest E. pacifica LA 

 (Fig. 6) and close to the regions of highest chloro- 

 phyll a (Fig. 3). There were significant positive cor- 



167 



