Seasonal dynamics of oxygen consumption and of heterotrophic bacterioplankton number in the region of the Ukrainian antarctic station Academician Vernadskiy

The percentage of psychrophilic forms to mesophilic due to casual ingress of allochthonic microflora, mainly from warm-blooded animals andhuman, was changing in a wide range.

Its annual average in a relatively pure zone reached 32%, whereas it has reached 5,9 and 19,7% in two points near the station. Daily consumption of oxygen fluctuated within limits of 0,21–0,97 mg/l and it correlated more vastly with ofpsychrophilic microflora number (+0,835). It is shown experimentally, that the temperature factor influences rates of using oxygen more, than additional enrichment of the water environment by organic matter in areas of increased antropogenic pressure.