TY - JOUR

T1 - ОСОБЕННОСТИ ФОРМИРОВАНИЯ МИКРОБИОТЫ В ЗОНЕ ДЕГЛЯЦИАЦИИ (ЛЕДНИК ВОСТОЧНЫЙ МУГУР, ЮГО-ВОСТОЧНЫЙ АЛТАЙ)

AU - Власов, Дмитрий Юрьевич

AU - Ганюшкин, Дмитрий Анатольевич

AU - Копица, Г.П.

AU - Горшкова, Юлия

AU - Платонова, Наталия Владимировна

AU - Тихомирова, И.Ю.

AU - Панкратова, Любовь Александровна

AU - Лесовая, Софья Николаевна

PY - 2025/4/30

Y1 - 2025/4/30

N2 - An analysis of samples of cryoconite and moraine material collected on the surface of the Eastern Mugur Glacier (Mongun-Taiga Ridge, southeastern Altai) was carried out. The results of metagenomic analysis indicate significant differences in the microbiota of cryoconites at different altitudes of the glacier: at the maximum altitude, the absolute dominance of actinobacteria from the Kineosporiaceae family was noted; closer to the edge, actinobacteria from the Microbacteriaceae family predominated. Representatives with a wide ecological amplitude, as well as psychrophilic and extremophilic bacteria (representatives of the Kineosporiaceae and Geodermatophilaceae families) were found in the cryoconites, which probably indicates different pathways for the microorganisms to enter the cryoconites and possible differences in the time of their presence in these habitats. Actinobacteria are most adapted to the extreme conditions that develop in the cryoconites of the Eastern Mugur Glacier, which contributes to the accumulation of primary biomass and the formation of organomineral substances in cryoconite holes. As one approaches the edge of the glacier, the taxonomic diversity and proportion of microorganisms with a wide ecological amplitude increase, which is probably explained by the airborne transport of particles of moraine material settling in the cryoconites. In the surface moraine material at the edge of the glacier, proteobacteria (representatives of the Sphingomonadaceae family) turned out to be superdominants, which may be associated with the processes of initial soil formation.

AB - An analysis of samples of cryoconite and moraine material collected on the surface of the Eastern Mugur Glacier (Mongun-Taiga Ridge, southeastern Altai) was carried out. The results of metagenomic analysis indicate significant differences in the microbiota of cryoconites at different altitudes of the glacier: at the maximum altitude, the absolute dominance of actinobacteria from the Kineosporiaceae family was noted; closer to the edge, actinobacteria from the Microbacteriaceae family predominated. Representatives with a wide ecological amplitude, as well as psychrophilic and extremophilic bacteria (representatives of the Kineosporiaceae and Geodermatophilaceae families) were found in the cryoconites, which probably indicates different pathways for the microorganisms to enter the cryoconites and possible differences in the time of their presence in these habitats. Actinobacteria are most adapted to the extreme conditions that develop in the cryoconites of the Eastern Mugur Glacier, which contributes to the accumulation of primary biomass and the formation of organomineral substances in cryoconite holes. As one approaches the edge of the glacier, the taxonomic diversity and proportion of microorganisms with a wide ecological amplitude increase, which is probably explained by the airborne transport of particles of moraine material settling in the cryoconites. In the surface moraine material at the edge of the glacier, proteobacteria (representatives of the Sphingomonadaceae family) turned out to be superdominants, which may be associated with the processes of initial soil formation.

KW - cryoconites

KW - microbiota

KW - mountain glaciers

KW - the Altai Mountains

UR - http://Elibrary.ru/RKGPCK

UR - https://www.mendeley.com/catalogue/651c32dd-8123-312c-9f7b-142ab15e1550/

U2 - 10.15372/kz20250203

DO - 10.15372/kz20250203

M3 - статья

VL - 29

SP - 28

EP - 42

JO - КРИОСФЕРА ЗЕМЛИ

JF - КРИОСФЕРА ЗЕМЛИ

SN - 1560-7496

IS - 2

ER -