6 
Fishery Bulletin 108(1 ) 
Sea surface height anomaly (cm) 
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Chlorophyll-a concentrations (mg/m 3 ) 
Figure 4 
The total fishing effort measured in days (d) for Ommastrephes bartramii in the Northwest Pacific Ocean by the 
Chinese squid jigging fleets in relation to (A) sea surface temperature, (B) sea surface salinity, (C) sea surface height 
anomaly, and (D) chlorophyll-a concentrations during September 1999-2004. 
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Sea surface temperature (°C) 
Sea surface salinity (psu) 
Sea surface height anomaly (cm) 
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Chlorophyll-a concentrations (mg/m 3 ) 
Figure 5 
The total fishing effort measured in days for Ommastrephes bartramii in the Northwest Pacific Ocean by the Chi- 
nese squid jigging fleets in relation to (A) sea surface temperature, (B) sea surface salinity, (C) sea surface height 
anomaly, and (D) chlorophyll-a concentrations during October 1999-2004. 
