Janubiy Orolbo‘yi mintaqasidagi tabiiy suv havzalarida tarqalgan bentos organizmlarning tur tarkibi va bioekologik rivojlanish xususiyatlari

Abstract

This thesis analyzes the species composition, ecological groups, living conditions and bioecological development characteristics of benthic organisms distributed in natural water bodies of the South Aral Sea region. Benthic organisms are a complex of organisms living at the bottom of water bodies, among aquatic plants, on muddy, sandy and other substrates, and play an important role in the food chain and material turnover of aquatic ecosystems. In the conditions of the South Aral Sea, a decrease in water level, an increase in mineralization and salinity, changes in water exchange and anthropogenic impact have a significant impact on the structure of benthic biocenoses. Studies show that some mollusks, crustaceans, annelids and larvae of dipterans, resistant to environmental conditions, are preserved in the Aral Sea water bodies. In particular, the species composition and quantitative indicators of zoobenthos can be used as important bioindicators in assessing the ecological state of the water body.