156 



BIOLOGY OF THE SEAS OF THE U.S.S.R. 



В 



- v A 



-2°-1° 0° 1° 2° 3° 4° 5° 6° 7° С 



35,00 33,50 34,00 34,50 35, CO %, 



Fig. 59. Distribution of starfish Asterias lincki in Barents Sea (A) and its adaptation 



to different factors of the medium (B) (Schorygin, 1928). /Bathopathy; //Edapho- 



pathy; /// Thermopathy; IV Halopathy. 



used the frequency of occurrence while Brotzkaya and Zenkevitch used the 

 biomass (Fig. 61). Ecological habitats show a quantitative adaptability of a 

 form to a combination of two factors of the habitat, in this case to tempera- 

 ture and depth. 



Table 67 



