New data on Lake Mogilnoe (Kildin Island, Barents Sea): The results of the 2018 expeditions

Переведенное название: Новые данные об озере Могильном (о. Кильдин, Баренцево море): результаты экспедиций 2018 г.

E D Krasnova, V A Efimov, M L Fedyuk, N L Frolova, N M Kokryatskaya, V Kossenkov, S V Patsaeva, A N Vasilenko, D A Voronov, P P Strelkov

Результат исследований: Научные публикации в периодических изданияхстатья

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В работе Красновой и соавторов обобщены результаты гидрологических, гидрохимических и микробиологических исследований в оз. Могильном, проведенных в ходе экспедиций РГО 2018 г. Приводятся подробные вертикальные профили температуры, солености, содержания кислорода и неорганических сульфидов в июле, августе и октябре. В течение периода наблюдений температура воды в озере снижалась, соленость на поверхности возрастала (5.4‰ в июле, 7.1‰ в августе, 10.7‰ в октябре), глубина «сероводородного слоя» повышалась (8 м, 8.3 м, 8.5 м). Сравнение с данными предыдущих исследований показывает, что за последние 10 лет стратификация в озере существенно изменилась: сероводород поднялся, соленость на поверхности повысилась (примерно на 2 м и 2‰, соответственно). Методом спектрофлуориметрии проведен анализ бактериального сообщества «розового слоя» воды (7-8 м), пограничного между «сероводородным» и аэрированным. В спектрах поглощения проб воды наблюдали пик поглощения, ожидаемый для бактериохлорофилла зеленых серных бактерий, и не наблюдали пика поглощения, характерного для пурпурных бактерий. Пионерские исследования микробиоты «розового слоя» в оз. Могильном были выполнены в начале XX века Б.Л. Исаченко, который нашел в нем именно пурпурных бактерий. За прошедшие 100 лет бактериальное сообщество «розового слоя» радикально поменялось.
Язык оригиналаанглийский
Номер статьи012019
Число страниц9
ЖурналIOP Conference Series: Earth and Environmental Science
Том263
DOI
СостояниеОпубликовано - 2019

Отпечаток

lake
hydrogen sulfide
meromictic lake
isolated population
subspecies
sea
surface layer
mineralization
water

Предметные области Scopus

  • Науки об окружающей среде (все)

Цитировать

Krasnova, E D ; Efimov, V A ; Fedyuk, M L ; Frolova, N L ; Kokryatskaya, N M ; Kossenkov, V ; Patsaeva, S V ; Vasilenko, A N ; Voronov, D A ; Strelkov, P P . / New data on Lake Mogilnoe (Kildin Island, Barents Sea): The results of the 2018 expeditions. В: IOP Conference Series: Earth and Environmental Science. 2019 ; Том 263.
@article{71ddf05702314e359219e201c7ee4808,
title = "New data on Lake Mogilnoe (Kildin Island, Barents Sea): The results of the 2018 expeditions",
abstract = "Lake Mogilnoe (Kildin Island, the Barents Sea) is a meromictic lake located in thehigh latitudes of the Arctic. It was formed by separation from the Barents Sea and retained an underground connection with it through a rocky barrier. The first researchers of the lake mentioned the upper fresh-water layer, the middle salty layer, lower anaerobic layer containing hydrogen sulfide, and noted the existence of a layer with rose water in the redoxcline.Observations carried out during the 20th century pointed to a gradual change in the vertical structure of the lake: mineralization increase of the surface layer and the rise of the hydrogen sulfide distribution boundary. In the past 10 years, there have been signals about acceleration of these changes. This is a big concern about an isolated population of Kildin cod (G. morhua kildinensis) listed in the Red Book of the Russian Federation, an endemic to this lake subspecies of Atlantic cod. In July, August and October 2018, three expeditions were organized to Lake Mogilnoe to study the current hydrological state of the lake, seasonal variability of hydrological characteristics, and outline possible causes of the registered changes and the threat to the Kildin cod population.",
author = "Krasnova, {E D} and Efimov, {V A} and Fedyuk, {M L} and Frolova, {N L} and Kokryatskaya, {N M} and V Kossenkov and Patsaeva, {S V} and Vasilenko, {A N} and Voronov, {D A} and Strelkov, {P P}",
year = "2019",
doi = "10.1088/1755-1315/263/1/012019",
language = "English",
volume = "263",
journal = "IOP Conference Series: Earth and Environmental Science",
issn = "1755-1307",
publisher = "IOP Publishing Ltd.",

}

Krasnova, ED, Efimov, VA, Fedyuk, ML, Frolova, NL, Kokryatskaya, NM, Kossenkov, V, Patsaeva, SV, Vasilenko, AN, Voronov, DA & Strelkov, PP 2019, 'New data on Lake Mogilnoe (Kildin Island, Barents Sea): The results of the 2018 expeditions', IOP Conference Series: Earth and Environmental Science, том. 263, 012019. https://doi.org/10.1088/1755-1315/263/1/012019

New data on Lake Mogilnoe (Kildin Island, Barents Sea): The results of the 2018 expeditions. / Krasnova, E D ; Efimov, V A ; Fedyuk, M L ; Frolova, N L ; Kokryatskaya, N M ; Kossenkov, V ; Patsaeva, S V ; Vasilenko, A N ; Voronov, D A ; Strelkov, P P .

В: IOP Conference Series: Earth and Environmental Science, Том 263, 012019, 2019.

Результат исследований: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - New data on Lake Mogilnoe (Kildin Island, Barents Sea): The results of the 2018 expeditions

AU - Krasnova, E D

AU - Efimov, V A

AU - Fedyuk, M L

AU - Frolova, N L

AU - Kokryatskaya, N M

AU - Kossenkov, V

AU - Patsaeva, S V

AU - Vasilenko, A N

AU - Voronov, D A

AU - Strelkov, P P

PY - 2019

Y1 - 2019

N2 - Lake Mogilnoe (Kildin Island, the Barents Sea) is a meromictic lake located in thehigh latitudes of the Arctic. It was formed by separation from the Barents Sea and retained an underground connection with it through a rocky barrier. The first researchers of the lake mentioned the upper fresh-water layer, the middle salty layer, lower anaerobic layer containing hydrogen sulfide, and noted the existence of a layer with rose water in the redoxcline.Observations carried out during the 20th century pointed to a gradual change in the vertical structure of the lake: mineralization increase of the surface layer and the rise of the hydrogen sulfide distribution boundary. In the past 10 years, there have been signals about acceleration of these changes. This is a big concern about an isolated population of Kildin cod (G. morhua kildinensis) listed in the Red Book of the Russian Federation, an endemic to this lake subspecies of Atlantic cod. In July, August and October 2018, three expeditions were organized to Lake Mogilnoe to study the current hydrological state of the lake, seasonal variability of hydrological characteristics, and outline possible causes of the registered changes and the threat to the Kildin cod population.

AB - Lake Mogilnoe (Kildin Island, the Barents Sea) is a meromictic lake located in thehigh latitudes of the Arctic. It was formed by separation from the Barents Sea and retained an underground connection with it through a rocky barrier. The first researchers of the lake mentioned the upper fresh-water layer, the middle salty layer, lower anaerobic layer containing hydrogen sulfide, and noted the existence of a layer with rose water in the redoxcline.Observations carried out during the 20th century pointed to a gradual change in the vertical structure of the lake: mineralization increase of the surface layer and the rise of the hydrogen sulfide distribution boundary. In the past 10 years, there have been signals about acceleration of these changes. This is a big concern about an isolated population of Kildin cod (G. morhua kildinensis) listed in the Red Book of the Russian Federation, an endemic to this lake subspecies of Atlantic cod. In July, August and October 2018, three expeditions were organized to Lake Mogilnoe to study the current hydrological state of the lake, seasonal variability of hydrological characteristics, and outline possible causes of the registered changes and the threat to the Kildin cod population.

U2 - 10.1088/1755-1315/263/1/012019

DO - 10.1088/1755-1315/263/1/012019

M3 - Article

VL - 263

JO - IOP Conference Series: Earth and Environmental Science

JF - IOP Conference Series: Earth and Environmental Science

SN - 1755-1307

M1 - 012019

ER -