Preliminary Report on the Zooplankton Collected on WEBSEC-70 



Bruce L. Wing 



During WEBSEC-70 zooplankton were col- 

 lected by three methods. Seventy-seven quan- 

 titative samples were taken by vertical tows 

 with a 0.5-m diameter, 0.57-mm mesh, Norpac 

 standard net, and four qualitative surface 

 samples were taken with a 12-cm diameter, 

 0.16-mm mesh, Wisconsin phytoplankton net 

 (fig. 1 and table 1). Additional qualitative 

 zooplankton samples were obtained as inci- 

 dental catch in an Isaacs-Kidd midwater trawl 

 used for capturing small fishes (Qua.st, else- 

 where in this Oceanographic Report). 



' National Marine Fishery Service, Auke Bay Bio- 

 logical Lahoratory, Auke Bay, Alaska 99821. 



The qualitative samples of macroplankton 

 from the Isaacs-Kidd midwater trawl catches 

 are being held as source material for future 

 taxonomic investigations on amphipods and 

 mysids. 



Sixty-two categories of marine zooplankton, 

 including species and distinctive life history 

 stages, have been identified from the quantita- 

 tive samples (figs. 2 and 3, and table 2). A 

 manuscript on the relationship of zooplankton 

 distributions to oceanographic conditions is in 

 preparation. 



196 



