Diurnal Methane Dynamics in the Cyanobacterial Community of Soda Lake Bitter 1 (Kulunda Steppe, Altai Krai)

Мұқаба

Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

Abstract—The diurnal dynamics of methane content in the near-bottom phototrophic biomass of the shallow soda Lake Bitter 1 (Gorchina 1) with a salinity of 30 g/L during the study period was investigated. The community was dominated by filamentous cyanobacteria, although no layered mat was formed. The maximum value of methane content up to 202.4 nmol CH4/cm3 was revealed in the morning hours, which significantly exceeded the night values (28.9–42.8 nmol CH4/cm3). Comparison of data on the content of methane with the relative abundance of cyanobacteria, methanogenic archaea, and methanotrophic bacteria during the twenty-four hours indicated that active processes of the methane cycle in soda lakes occurred not only in the sediments, but also in the near-bottom cyanobacterial communities. Methane content in the biomass of such a community is the result of a balance between the processes of its release by methanogens, consumption by methanotrophic bacteria, and natural degassing. It is assumed that the morning peak of methane content is associated with the release of hydrogen by diazotrophic cyanobacteria, which stimulates the development and activity of hydrogenotrophic methanogens of the genus Methanocalculus.

Авторлар туралы

O. Samylina

Winogradsky Institute of Microbiology, Researsch Center of Biotechnology, Russian Academy of Sciences

Хат алмасуға жауапты Автор.
Email: olga.samylina@gmail.com
Russia, 119071, Moscow

A. Merkel

Winogradsky Institute of Microbiology, Researsch Center of Biotechnology, Russian Academy of Sciences

Email: olga.samylina@gmail.com
Russia, 119071, Moscow

N. Pimenov

Winogradsky Institute of Microbiology, Researsch Center of Biotechnology, Russian Academy of Sciences

Email: olga.samylina@gmail.com
Russia, 119071, Moscow

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© О.С. Самылина, А.Ю. Меркель, Н.В. Пименов, 2023

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