abstract: There are no less than 100 producers of toxic and biologically active/biocidal substances among 1100 cyanobacterial and microalgal species in the Black Sea. Our investigations include two aspects: (1) evaluation of ecological and biochemical connections between cyanobacteria and microalgae and herbivorous organisms ("grazers"), and (2) formation of new approaches to the using of hydrobionts and their metabolites in human affairs. Experimental data confirm that biological and ecological construct
journal: Turkish Journal of Fisheries and Aquatic Sciences