Of aquatic biological resources in the lower reaches of the Volga in 2003–2022

Abstract

Based on research materials from 2003–2022, a review of the dynamics of stocks of aquatic biological resources for an unregulated section of the Volga River below the Volga hydroelectric dam within the Astrakhan region was carried out. The reasons, mainly of anthropogenic nature, causing changes in stocks are shown. The multidirectional nature of changes in the state of populations of aquatic biological resources depending on the sensitivity of species to environmental factors and their consumer value is demonstrated. The steps aimed at improving the situation are proposed.