Abstract
The effect of the film of diesel on green algae Ulva lactuca L. and Ulvaria obscura (Kützing) Gayral ex Bliding of the Barents Sea was studied. The Ulvaria obscura is widespread, the Ulva lactuca in recent years there has been a significant increase in the number and biomass in the area. The short-term (in the period of one tidal cycle) effect of the diesel fuel film on the physiological state of two species of green algae, and define the strength of adhesion of the film of diesel to the surface of the thallus were determined. Short-term exposure of algae by film of diesel in a period of one tidal cycle (1) reduced the rate of evaporation, (2) decreased the intensity of photosynthesis, (3) caused plasmolysis of the cells, especially in U. lactuca, (4) affected the development of spores and gametes and caused they mortality. The film of diesel adhered firmly to the algae surface and did not wash off even after 15 cycles. The data obtained indicate the danger of even a single spill of diesel into the littoral. In General, the damage to the population will depend on the stage of algae development and the duration of exposure.
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