DEPENDENCE OF THE OCCURRENCY RATE DIFFERENT SPECIES OF WHITEBAIT VOLGA DELTA ON THE SPAWNING GROUNDS ASTRAKHAN STATE RESERVE OF HYDROLOGICAL PARAMETERS FLOODS
The influence of the main indicators of the hydrological regime of the Volga delta to changes in the relative abundance of juvenile fish on the spawning grounds of the Astrakhan State Nature Reserve. It is shown that the reduction in annual runoff and duration drenched spawning leads to a significant reduction in the relative abundance of fish and the growth of semi-sedentary population of fish.