Influence of light and temperature on Barents sea seaweed
The review of the last 20-years investigations carried out in laboratory of algology of Murmansk Marine Biological Institute is presented. The main direction of presented investigations is disclosing of mechanisms of seaweed adaptation to Arctic seas conditions. Influence of intensity, photoperiod and spectral composition of light on morphological and physiological parameters of seaweed at different stages of ontogenetic development is shown. The mechanisms allowing seaweed to exist in the conditions of polar night in the absence of illumination and low temperatures are revealed. Results of investigations allow drawing a conclusion, that adaptation to a long period absence of illumination and low temperature promoted distribution of seaweed behind a polar circle.