Scientific publications

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Hydrophysics. Hydrology	5
N.I. Pal’shin, G.E. Zdorovennova, R.E. Zdorovennov, S.R. Bogdanov, T.V. Efremova, S.Yu. Volkov, G.G. Gavrilenko, A.Yu. Terzhevik. Solar radiation within the water column of small Karelian lakes	5
K.S. Dvoeglazova, V.A. Shelutko. Heat flow dynamics of the Northern Dvina river	15
M.V. Shmakova, S.A. Kondratyev. Some questions of estimating suspended sediment in watercourses of North-West Russia	26
Hydrochemistry and sediments	37
A.V. Leonov, M.V. Zobkova. Using long-term bod – experiments for seasonal research of organic matter components oxidation in water from different areas of Lake Onego	37
E.A. Rumyantseva, N.N. Bobrovitskaya. Automated calculation of the quality characteristics of the Lenderka river flow through the gauging station at Lenderka village	58
A.M. Belyakova, N.V. Zueva. Assessment of river water quality in the city by hydrochemical indices (the Okhta river, St. Petersburg)	72
G.T. Frumin, A.Yu. Gorelyshev, A.V. Kulinkovich. Permissible nutrient loadings on international lakes	85
Hydrobiology	92
Yu.A. Zuyev, A.V. Shatsky, A.Yu. Tamulyonis. Harvestable stock of bloodworms (chironomus: diptera) in some lakes of the Leningrad Region	92
A.N. Chernyshev, A.B. Stepanova. Spatiotemporal variability of Daphnia cristata Sars, 1862 and Diaphanosoma brachyurum (Liévin, 1848) populations in lake Leschovoye in 2016–2020	102
Research methods	114
K.B. Mikhailova, S.G. Mikhalap. Exploration of helophyte growth dynamics in the Pskovskoe lake littoral zone using remote sensing data	114
T.B. Kalinnikova, A.V. Egorova, R.R. Shagidullin. The “one health” approach as a possible mode of ecological risk assessment (example of cyanotoxins)	130
A.M. Rasulova. Calculating evapotranspiration for the Lake Ladoga catchment area	146
History of science	157
V.V. Menshutkin. The experience of computing technology application in ecological research	157
O.T. Rusinek. Half a century of hydrobiological research (celebrating 90th anniversary since the birth of O. M. Kozhova, hydrobiologist and researcher of Baikal)	163
Chronicle	174
A.V. Tolstikov, N.E. Galakhina, Z.I. Slukovskii. Polar School and Workshop (Apatity, April 11–17, 2021)	174