TO THE QUESTION OF INFLUENCE OF ABIOTIC AND ANTHROPOGENIC FACTORS ON THE DAILY VERTICAL MIGRATION ACTIVITY ON THE AQUATIC ORGANISMS OF LAKE BAIKAL

Abstract

Daily vertical migration (DVM) of aquatic organisms is a widespread phenomenon in both small and large water bodies. It is observed, including in the deepest lake in the world – Baikal. Unique Baikal amphipods and lower crustaceans (Cladocera, Copepoda, Ostracoda) are the main representatives of the nocturnal migratory complex. As part of this study, it was found that artifi cial lighting and changes in the lake water level can aff ect the nighttime migratory activity of aquatic organisms.