From the lagoon to the meromictic lake: a case study of lake-bottom sediments of Lake Kislo-Sladkoe (the Karelian Coast of White Sea, Russia)

Shilova, Olga; Leontiev, P.; Vakhrameeva, Elena; Losyuk, Galina; Grigoriev, Vasiliy; Krasnova, E. D.; Repkina, T. Yu.; Kublitskiy, U.

doi:10.31951/2658-3518-2020-a-4-490

Cited by 5 publications

(2 citation statements)

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“…If the lake has a smaller depth, it may immediately turn into a freshwater body with traces of salinization of near-bottom water in bottom holes. At a depth of about 1 m a separating water body is degenerated into a marsh (Lisitzin et al, 2013; Pantyulin and Krasnova, 2011; Shilova et al, 2020). Meromictic Lake Pervoe Starushechye could evolve when its level was at least 19 m. At that time ancient people could have lived there.…”

Section: Discussionmentioning

confidence: 99%

Paleogeographic conditions of human habitation on the Karelian coast of the White Sea in the Late-Holocene (Chupa Town, Karelia, Russia)

Тs

et al. 2021

The Holocene

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Bottom sediments from Lake Pervoe Starushechye, on the White Sea shore, near Korabelnaya Bay, Chupa Town, 500 m from an archaeological site, were analyzed. The aim of our studies was to determine the position of the sea shoreline, to correlate archaeological sites relative to it, to date ancient settlements, and to reconstruct the paleoclimatic conditions and habitats of ancient people. Spore and pollen, diatom, and radiocarbon (14C) analyses were done. New evidence for the time of retreat of the seashore, the isolation of Lake Pervoe Starushechye from it and the time of the possible invasion of the area by ancient people was obtained. People were shown to inhabit the area from 3970 ± 120 to 3250 ± 120 14С y.a., when the sea shoreline reached modern levels of 19–22 m. The lake was then a ~8 m deep White Sea bay, in which marine gyttja was deposited. These events are reflected in the stratigraphy of the sequence and supported by the results of diatom and spore and pollen analyses. About 3500 y.a., mean annual temperatures in North Karelia were 2°С and annual precipitation ~50 mm/year higher than modern values. Spruce and pine-spruce forests with aspen and alder patches grew on the shore. A favorable climate and exuberant vegetation attracted people. Therefore, it is at the Atlantic-Subboreal boundary that the archaeological sites located at the above altitudes could arise. The lake separated from the White Sea 3020 ± 90 14С y.a. Freshwater sapropel was deposited in the isolated lake, as indicated by the composition of diatom flora and spore and pollen spectra. The sea shoreline declined to 17–16 m. Light-coniferous pine lichen-green moss forests with light-loving oligotrophic grasses were spreading actively throughout the study area.

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Section: Discussionmentioning

confidence: 99%

Paleogeographic conditions of human habitation on the Karelian coast of the White Sea in the Late-Holocene (Chupa Town, Karelia, Russia)

Тs

et al. 2021

The Holocene

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“…Lake Kislo-Sladkoe, spanning an area of approximately 12,600 m 2 with a maximum depth of roughly 4 m, is separated from the White Sea by a wide rocky sill [24,27]. Unlike Trekhtzvetnoe Lake, seawater enters Lake Kislo-Sladkoe during spring tides and strong wind surges, while freshwater runoff remains negligible.…”

Section: Study Areamentioning

confidence: 99%

Heavy Metals in Sediments of Subarctic Meromictic Lakes of the White Sea as Possible Tracers of Environmental Changes

Budko,

Demina,

Krasnova

et al. 2023

JMSE

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Meromictic lakes of the marine coast, quite widely distributed in the northern hemisphere, are the result of climate changes and glacier retreat. The bottom sediments of these lakes serve as a geological chronicle of the history of marine basin’s development with the geochemical occurrence forms of elements indicate various processes of their accumulation. This paper presents research results concerning the occurrence of forms of heavy metals in lake sediments along the coast of the White Sea. These results are based on a sequential seven step leaching procedure, followed by ICP-MS analysis and subsequent statistical data processing. To determine differences among the examined geochemical parameters, Pearson’s correlation analysis and Ward’s cluster analysis were utilized. The total content of Cr, Mn, Fe, Co, Ni, Zn, V, and Pb in the sediments did not exhibit significant differences based on their degree of isolation from the sea. The major contribution to deposition of these metals in sediments of the meromictic lakes studied is the residual form, encompassing the mineral matrix of the sediment. At the same time, the elevation of mobile forms for all the metals examined corresponds to an increase in the isolation of lakes from the White Sea. In the meromictic lake sediments, concentrations of Cu, Mo, and U demonstrated significant increases in forms tightly bound to organic matter, while Cd exhibited an association with Fe-Mn oxyhydroxides. Notably, a significant difference in the occurrence forms of Cu, Cd, Mo, and U was evident in the reduced sediments of meromictic lakes when compared to those of open sea bays. The meromictic lakes along the White Sea coast, positioned at various stages of isolation, hold promise for investigating the migration of metals in response to environmental changes.

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From a large basin to a small lake: Siliceous microfossils stratigraphy of the isolation basins on Big Solovetskiy Island (the White Sea, NW Russia) and its implication for paleoreconstructions

Ludikova

Subetto

Кузнецов

et al. 2023

Quaternary International

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From the lagoon to the meromictic lake: a case study of lake-bottom sediments of Lake Kislo-Sladkoe (the Karelian Coast of White Sea, Russia)

Cited by 5 publications

References 0 publications

Paleogeographic conditions of human habitation on the Karelian coast of the White Sea in the Late-Holocene (Chupa Town, Karelia, Russia)

Paleogeographic conditions of human habitation on the Karelian coast of the White Sea in the Late-Holocene (Chupa Town, Karelia, Russia)

Heavy Metals in Sediments of Subarctic Meromictic Lakes of the White Sea as Possible Tracers of Environmental Changes

From a large basin to a small lake: Siliceous microfossils stratigraphy of the isolation basins on Big Solovetskiy Island (the White Sea, NW Russia) and its implication for paleoreconstructions

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