Фитопланктон Желоба Св. Анны: Влияние Абиотических Факторов

Сергеева, В. М.; Суханова, И. Н.; Флинт, М. В.; Полухин, А. А.; Кременецкий, В. В.; Федоров, А. В.; Сахарова, Е. Г.; Георгиева, Е. Ю.; Ланге, Е. К.; Щука, С. А.

doi:10.31857/s0030157420040218

Океанология

2020

DOI: 10.31857/s0030157420040218

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Фитопланктон Желоба Св. Анны: Влияние Абиотических Факторов

В. М. Сергеева¹,

И. Н. Суханова²,

М. В. Флинт³

et al.

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Water Structure and Carbon Dioxide Flux Over the Laptev Sea Continental Slope and in the Vilkitsky Strait in the Autumn Season

Polukhin,

Kazakova,

Gusak

et al. 2023

Okeanologiâ

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In the frameworks of the program “Ecosystems of the Siberian Arctic seas”, carried out by Shirshov Institute of Oceanology RAS since 2007, studies of the structure of waters, spatial variability of the carbonate system parameters have been performed, and the intensity and direction of the carbon dioxide flux over the continental slope of the Laptev Sea and in the Vilkitsky Strait in September 2018 have been calculated. The presence of several main water masses that determine the structure of waters in the study area is shown. A strong spatial variability of the parameters of the carbonate system of sea waters, determined by the complexes of physical and chemical-biological processes, has been revealed. The intensity and direction of the carbon dioxide flux at the water–atmosphere boundary were calculated, ranging from –12 to +4 mmol m–2 day–1. It was revealed that the investigated area of the outer shelf of the sea and the continental slope of the Laptev Sea is an emitter of carbon dioxide into the atmosphere as of September 2018. The area of the Vilkitsky Strait, on the contrary, is an area of absorption of CO2.

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Water Structure and Carbon Dioxide Flux Over the Laptev Sea Continental Slope and in the Vilkitsky Strait in the Autumn Season

Polukhin,

Kazakova,

Gusak

et al. 2023

Okeanologiâ

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show abstract

Organic Carbon Content in Dissolved and Particulated Forms in the Kara Sea Water

Belyaev,

Fedulov,

Kravchishina

et al. 2024

Okeanologiâ

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Data of suspended matter content, concentrations of dissolved and particulate organic carbon in the Kara Sea water for 2007-2022 are summarized. A difference in the distributions of dissolved (DOC) and particulate (POC) organic carbon in the water column during the autumn (September) and spring-summer (July-August) periods was revealed. An increase of concentrations of dissolved organic carbon was recorded both on the surface and in the water column in the summer. Analysis of the dependences of DOC concentrations on salinity showed that the increase in these concentrations is not associated with an increase in DOC concentrations in river runoff waters. There was also a significant increase in DOC and POC concentrations in phytoplankton bloom zones throughout the water column. Thus, a connection has been identified between seasonal increases of organic matter concentrations in the open part of the sea and the processes of phytoplankton blooming.

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Фитопланктон Желоба Св. Анны: Влияние Абиотических Факторов

Cited by 2 publications

References 0 publications

Water Structure and Carbon Dioxide Flux Over the Laptev Sea Continental Slope and in the Vilkitsky Strait in the Autumn Season

Water Structure and Carbon Dioxide Flux Over the Laptev Sea Continental Slope and in the Vilkitsky Strait in the Autumn Season

Organic Carbon Content in Dissolved and Particulated Forms in the Kara Sea Water

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