Growth rate of Fucales on the Murman Coast, the Barents Sea

Fucales are among the key algae on coast of Northern Hemisphere and being actively studied, although minor attention is paid for age structure, since there no reliable signs determining algae. Direct observations thallus growth evidence a variation this trait under different conditions. We assess rate linear number formed dichotomous branching per year in Fucus vesiculosus distichus Murman Coast Barents Sea. These parameters differ plants sampled from biotopes. The annual F. two times higher more branches environment characterized by low water movement intensity pronounced salinity fluctuations than growing weakly protected area coast. In Sea, depend regime particular biotope. depends also already dichotomies, i.e., physiological thallus. It necessary to modify equation calculating these species using correction factors salinity, movement, dichotomies.