264 



DISCOVERY REPORTS 



\ 



1500 



1000- 



500- 



CTENOCALANUS VAMUS 



ESTIMATED NUMBERS 



POSSIBLE LIMITS OF LABORATORY ERROR 



HOUR 1300 



1910 



OITHONA FRIEIOA 





ESTIMATED NUMBERS 



POSSIBLE LIMITS OF LABORATORY ERROR 



HOUR 1300 



1700 



Fig. 137. Graph showing the variations in the estimated num- Y\g. 139. Graph showing the variations in the estimated num- 

 bers of Ctenocalanus vanus (expressed as an average per 50 m. bers of Oithona frigida (expressed as an average per 50 m. haul) 

 haul) taken in the columns of water from the bottom (265 m.) ta k en i n the columns of water from the bottom (265 m.) to the 

 to the surface by N 70 V nets at five different times at St. 41. surface by N 70 V nets at five different times at St. 41. 



2000- 



1000 



DREPANOPUS PECTINATUS 



• • ESTIMATED NUMBERS 



. . POSSIBLE LIMITS OF LABORATORY ERROR 



HOUR 1300 



2105 



Fig. 138. Graph showing the variations in the estimated num- Fig. 140. Graph showing the variations in the estimated num- 

 bers of Drepanopus pectinatus (expressed as an average per 50 m. bers of Oncea curvata (expressed as an average per 50 m. haul) 

 haul) taken in the columns of water from the bottom (265 m.) taken in the columns of water from the bottom (265 m.) to the 

 to the surface by N 70 V nets at five different times at St. 41. surface by N 70 V nets at five different times at St. 41. 



