Vol. 14, Special Issue 1: 1st Student Workshop on Ecology and Optics of the White Sea, 55-62, 2015
Hydrological and spectrophotometry research on Kislo-Sladkoye Lake
Dmitrii Vinogradov, Sergei Varlamov, Nadezda Volovich, Vladislav Kuznetsov, Anastasia Grigoryeva, Maria Mardashova, and Elena Krasnova
Phytoplankton is dominated by cryptophyte flagellates Rhodomonas sp. and green-coloured cocci. In the coloured layers, the following pigments were detected by spectrophotometry: chlorophyll a, chlorophyll b, bacteriochlorophyll c or g, and phycoerythrin. Therefore, the presence of cryptophytae algae (genus Rhodomonas), unicellular phototrophic organisms containing chlorophyll b, and green sulfur bacteria is shown. The distribution of the layers: 0 - 1.7 m: organisms are virtually absent; 1.7- 2.2 m: cyanobacteria; 2.2 - 2.4 m: light absorption peaks corresponding to phycoerythrin and chlorophyll a and b appear, a large number of cryptophytae algae (genus Rhodomonas) and unicellular green algae. 2.4 - 2.7 m: concentration of pigments decline, a small amount of cells with chlorophyll b and cryptophytae algae; 2.7 - 4 m: green sulfur bacteria.
For the first time, a theoretical explanation of changes in the lake Kislo-Sladkoye following a spring tide is given. Densities of seawater and lake water were calculated and the results show that seawater penetrated the lake at a depth of 1.55 m during the spring tide.
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Submitted: 21 Oct 2014
Revised: 08 June 2015
Accepted: 31 July 2015
Published: 02 Sept 2015
Responsible editor: Svetlana Patsaeva
Vinogradov D, S Varlamov, N Volovich, V Kuznetsov, A Grigoryeva, M Mardashova & E Krasnova, 2015. Hydrological and spectrophotometry research on Kislo-Sladkoye Lake. EARSeL eProceedings, 14(S1): 55-62