65 



Fig. I. Scheme of location ot the polygons in iho Bering Sea in June 1981 and July 1984. 



Group 



TABLE 1 



Elements of the plankton community, their composition and characteristics. 



Caloric 

 content, 

 cal/mg wet 

 Element A""!" Assimllability weight Composition of elements 



Phytoplankton (p) Small (< I.S m), (p,) 



Large (> I-") m). IpO 

 Bacterioplankton (b) 

 Zooplankton (z) 

 Microzooplankton (a) Zooflagellates (a,) 



Infusorians (a,) 

 Mesozooplankton (m) Fine nannophage filters (0 



Small euryphages (v) 

 (0.3-3.0 mm) 



Large euryphages (g) 

 (3.0-30.0 mm) 



Predators (s) 



0.5 



0.7 



0.7 



Copepod nauplii, copepodite stages of fine calanoid 

 genera Microcalaiius. PseudocaUiiuis. Acurua. larvae 

 of mollusks, polychaetes, echinoderms; rotifers, 

 appendicularians 



Younger copepodite of calanoid genera Calanus. 

 Eiicalanus. older copepodites of calanoid genera 

 Aciirtia. Pseiuloccilaniis. cyclopods, harpaclicoids, 

 ostracods 

 Nonpredatory pteropod mollusks 



Older copepodites of calanoid genera Catamis 



Eucalainis. Euphausia 

 Decapod larvae, sideswimmers, nemertines, polychaetes 

 Predatory pteropods 

 Arrowworms 

 Siphonophorcs, medusae, ctenopores 



202 



