EN
The simultaneous recording of several photomovement parameters of algae as test-functions during biomonitoring is proposed. The green alga Dunaliella viridis Teod. was used as the test-object for the estimation of different pollutants - surface-active substances, pesticides and heavy metals. The quantitative changes of photomovement parameters as a criterion of toxicity were determined by means of the vectorial method of biomonitoring.