Composition, structure of ichthyofauna and biological characteristics of fish populations of Lake Bolshoe Krasnoe (Solovetsky Archipelago, the White Sea)

• Published in: Transformat︠s︡ii︠a︡ ėkosistem Vol. 8; no. 2; pp. 212 - 224
• Main Authors: Dvoryankin G.A, Novoselov A.P., Imant E.N.
• Format: Journal Article
• Language: English
• Published: Cherepovets State University 01.06.2025
• Subjects: bolshoy solovetsky island; freshwater ichthyofauna; species diversity
• ISSN: 2619-0931
• DOI: 10.23859/estr-240320

The data of long-term studies (1965–2023) of the ichthyofauna of Lake Bolshoe Krasnoe have been summarized and systematized. Lake occupies a key position in the main lake-canal system of Bolshoy Solovetsky Island. The fish community of the lake is represented by six species, five native ones (the northern pike, burbot, the European perch, common roach, and the Eurasian ruffe) and one acclimatized (vendace). The formation of the lake ichthyofauna was influenced by abiotic and trophic characteristics of the reservoir, primarily the temperature regime, availability and amount of food. Specific responses of different fish populations to environmental factors are noted, manifested in a decrease/increase in growth rate. No fundamental differences have been found since 1965 for the fish population characteristics in Lake Bolshoe Krasnoe, which indicates the resilience of this island freshwater ecosystem to observed environmental factors.