number, ind/m~ 

 in 0-100 (bottom) 

 laver 



number. md/m~ 

 m 0-100 (bollom) 

 layer 



Chukchi Sea 



Fig. 5. Distribution of Oikopleura hihradoricnsis in the northern Bering and pjg (, 

 southern Chukchi Seas. 



Distribution of Frinlkirui horcalis in the northern Bering and southern 

 Chukchi Seas. 



number. md/m~ 

 in 0-100 (bottom) 

 layer 



Chukchi Sea 



Fig. 7. Distribution of C(i/<»iHv/i/((/)i(7in(.v in the mil Ihern Boring and southern 

 Chukchi Seas. 



The number of copepods of the outer shelf of the Gulf of 

 Anadyr reachecj 3,500 ind/ni". \n(MV\dudi\%oiEucalamisbungii 

 were also concentrated predominantly at deep-water sampling 

 stations of the northwest Bering Sea (Fig. 8). In that region, the 

 total number equaled 42,000 ind/m-, while at South and East 

 Polygons, it did not exceed 22,000 ind/nr. The number of 

 nauplial and copepodite stages of E. bungii reached only 

 16,000 indym-. 



One of the most numerous species of the southern Bering 

 Sea oceanic group — Metridia pacifica — formed high 

 conglomerations at the East Polygon (210,000 ind/m-), in 

 northwest deep-water regions of the Bering Sea 

 (130,000 ind/m-), and in the northern part of the study area of 

 the Chukchi Sea (96.000 ind/m-) (Fig. 9). 



Areas of habitation of Anadyr group species are limited to 

 the shelf regions of the Bering and Chukchi Seas. The major 

 representative of this group, Arart/fl titmida. was situated in the 

 inner part of the Gulf of Anadyr, where this species counted 

 53,000 ind/m-. At other stations, the number of A. nimida did 

 not exceed 5.000 ind/m- (Fig. 10). 



A large number of species of the northern Bering Sea 

 oceanic group was found in the outer zone of the central shelf 

 region (Fig. 1 1 ). The highest number of Calamis glacialis 

 specimens was 35,000 ind/m-; the maximum for Parathemisto 

 lihelhda was 190,000 ind/nr. Older copepodites, C. glacialis, 

 were found in the epipelagic zone of the deep-water part of the 

 Bering Sea (Polygons East and South) only occasionally. 

 Characteristic features of habitation of species of the neretic 

 group across the water are of the Bering and Chukchi Seas were 



166 



