Ecological and toxicological state of the volkhov bay of ladoga lake

The article deals with the issue of ecological and toxicological state Volkhov Bay Ladoga Lake — one most polluted water areas reservoir, which is important fisheries importance has a significant impact on quality Neva River in winter. Biological chemical-analytical studies conducted summer this year showed mass lesions fish chronic toxicosis. study bottom sediments did not reveal pronounced deposits from norm, associated hydrological features area nature presence currents, contributes to removal pollutants outside lip into lake. Fish turned out be informative indicators their habitat. various species caught these waters that toxicosis, regardless type, massive nature, proceeds chronically, mainly mild moderate injuries gill tissue parenchymal organs. It shown lesion more gravitating sources pollution mouth river stock Syasky Central Bank. Assessing at present time comparison results past studies, some improvement should noted.