ДЕГРАДАЦИЯ НЕФТИ БАКТЕРИЯМИ, ВЫДЕЛЕННЫМИ ИЗ ДОННЫХ ОСАДКОВ КАРСКОГО МОРЯ И ОЗЕРА БАЙКАЛ

The activity of microorganisms isolated from the bottom sediments of the Kara Sea shelf and Lake Baikal in the process of oil degradation was evaluated in a model experiment. Under low temperature (+10°С) and mineralization from 0 to 30 g/L (sodium chloride) the reduced conversion of n-alkanes in the cultivation of bacteria from the Kara Sea (less than 30%) and higher activity of Baikal microorganisms community (conversion up to 95%) were revealed. The response of bacterial communities to the change in the mineralization of the medium is selective: nonsignificant result of the influence on n-alkanes degradation in the cultivation of the Kara Sea strains, and a sharp acceleration of conversion of the oil alkane fraction in the cultivation of Baikal microorganisms under 7,0 to 15 g/L of sodium chloride in the medium. The effect of synergism during oil degradation under conditions of co-cultivation of the strains from Lake Baikal and the Kara Sea is inappreciable.