Census of below-ground biota associated with permafrost affected soils of western Greenland, with a focus on trophic structure

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F24%3A43908841" target="_blank" >RIV/60076658:12310/24:43908841 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S1164556324000293?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1164556324000293?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ejsobi.2024.103623" target="_blank" >10.1016/j.ejsobi.2024.103623</a>

Result language

angličtina

Original language name

Census of below-ground biota associated with permafrost affected soils of western Greenland, with a focus on trophic structure

Original language description

Large amounts of terrestrial organic carbon (OC) are stored in Arctic permafrost-affected soils. Through processes of cryoturbation and solifluction, the subsoils can contain subducted topsoil material, which largely contribute to the large OC storage in these soils. While the bacterial, archaeal, and fungal communities in such soils have been studied to some degree, information about protists and meso- and macrofauna is scarce, although these groups might substantially contribute to OC processing, through e.g., food web interactions. Different organic and mineral horizons, including subducted topsoil material, of Arctic soils were investigated using a metatranscriptomics three-domain community profiling approach. Soil horizons were compared in regards to their total microbial community composition including all three domains of life. Furthermore, abundances of different pro- and eukaryotic micropredators were examined and a variety of functional groups involved in the carbon (C) and the nitrogen (N) cycle were analyzed in relation to specific taxonomic groups and abiotic soil parameters. Our study showed that RNA yields positively correlated with the OC content of the horizon and that the composition of the microbial community in subducted topsoil material rather matched that of mineral subsoils instead of organic top horizons. Horizon-resolved profiling revealed heterogeneity in the associated microbiomes and showed major differences in microbiomes of topsoil and subducted topsoil. The abundance of protist and nematode micropredators decreased in subducted topsoil, while predatory myxobacteria remained remarkably constant and comprised high proportions of the total communities in all horizons. Correlations analysis between functional guilds and biotic and abiotic parameters suggest a major impact of predatory myxobacteria on carbon and nitrogen cycles of subducted topsoils. The study adds urgently needed information about the total biota structure in permafrost soils and first insights into the associated soil microbial food webs.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

40104 - Soil science

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

European Journal of Soil Biology

ISSN

1164-5563

e-ISSN

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Volume of the periodical

121

Issue of the periodical within the volume

JUN 2024

Country of publishing house

FR - FRANCE

Number of pages

10

Pages from-to

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UT code for WoS article

001242385600001

EID of the result in the Scopus database

2-s2.0-85193033042