Spectrophotometric determination of the distribution of phototrophic microorganisms in meromictic reservoirs of the White Sea in 2025
Yulia G. Sokolovskaya1, Daria A. Ivanova1, Elena A. Labunskaya1, Elena D. Krasnova1, Dmitry A. Voronov2, Svetlana V. Patsaeva1; 1Lomonosov Moscow State University, Leninskie Gory, Moscow, Russia; 2Kharkevich Institute for Information Transmission Problems, Russian Academy of Sciences, Moscow, Russia
Abstract
On the coast of the White Sea there are some reservoirs that are gradually becoming isolated from the sea. In such reservoirs, fresh water enters from the surface while seawater remains below. Due to the lack of mixing between water layers caused by differences in water density, distinct stratification occurs. An oxygen-rich upper layer adjoins an anaerobic lower zone enriched with hydrogen sulfide. The distribution of phototrophic microorganisms (such as phytoplankton, cyanobacteria, and sulfur bacteria) varies depending on water properties and changes with increasing depth within the reservoir. Herein we present the findings obtained through spectrophotometric analysis of microbial photosynthetic pigments conducted during summer field campaigns in 2025 in the meromictic reservoirs located along the Kandalaksha Bay of the White Sea.
Speaker
Yulia G. Sokolovskaya
Lomonosov Moscow State University
Russia
Report
File with report
Discussion
Ask question
