| Summary: | The paper presents the results of a study regarding the observation and the control of the pollution impact over the animate being community in the Someş basin. Within the study there have been comparative analyzed, at different time elements, the main aquatic biocenoza components in different collecting points on the rivers, up and down the pollution sources. The investigations comprised chemical analysis of the sediments and vegetal and animal tissues, bacteriologic water analysis, the determination of the development and the primary productivity dynamics of the phytoplankton, the taxonomic and ecologic evaluation of the ihtiofauna and of the macrofite.
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