Although their areal coverage of Hawaiian 

 waters was much greater than that reported 

 here, King and Hida (1954, 1957) found no dif- 

 ferences in abundance of zooplankton between 

 windward and leeward areas. 



Variations in density of zooplankton around 

 Oahu are illustrated in figures 3, 4, 5, 6. and 7 

 for CHG-24 and the Smith cruises. An average 

 and a standard deviation were computed from 

 the adjusted volumes for the series of shallow- 



* m '^v\l/ * • M 



Figure 3. --Density of zooplankton around Oahu, 

 November 14-18, 1955 (CHG-24, odd-numbered 

 s tat ions) . 



Figure 4. --Density of zooplankton around Oahu, 

 February 2-7, 1956 (HMS-32, upper net). 



Table 7 . --Comparison of average volumes of zooplankton (cc. per 1,000 m.-') between wind- 

 ward and leeward areas off Oahu for the upper, middle, and lower nets of the Smith 

 cruises, 1956i' fn = number of samples; x = average volume; s = standard deviation; 

 t = statistic for testing hypothesis; P = probability] 



Cruise 



Date 



Windward 



Leeward 



— One series of tows between the surface and the top of the thermocline, during CHG-24 in Novem- 

 ber 1955, is included with the upper-net tows. 



2/ 



— Volumes from upper net were adjusted for diel variation. Volumes from middle and lower nets 



were not. 



