Contrasting stability of fungal and bacterial communities during long-term decomposition of fungal necromass in Arctic tundra

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F25%3A00638882" target="_blank" >RIV/60077344:_____/25:00638882 - isvavai.cz</a>

Alternative codes found

RIV/61388971:_____/25:00638882 RIV/00216208:11310/25:10509458

Result on the web

<a href="https://environmentalmicrobiome.biomedcentral.com/articles/10.1186/s40793-025-00730-5" target="_blank" >https://environmentalmicrobiome.biomedcentral.com/articles/10.1186/s40793-025-00730-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1186/s40793-025-00730-5" target="_blank" >10.1186/s40793-025-00730-5</a>

Result language

angličtina

Original language name

Contrasting stability of fungal and bacterial communities during long-term decomposition of fungal necromass in Arctic tundra

Original language description

Decomposition is a crucial process in terrestrial ecosystems, driving nutrient cycling and carbon storage dynamics. Considering the amount of fungal necromass produced in soils annually, its decomposition represents an important nutrient recycling process. Understanding the decomposition dynamics and associated microbial communities of fungal necromass is essential for elucidating ecosystem functioning, especially in environmentally sensitive regions such as the Arctic tundra, which remain under-explored. In a three-year field experiment conducted in the Svalbard archipelago, we investigated the decomposition of two types of fungal necromass with differing biochemical properties. We studied the decomposition rate, changes in chemical composition, and the succession of fungal and bacterial communities associated with the decaying fungal necromass. We discovered that up to 20% of fungal necromass remained even after three years of decomposition, indicating that the decomposition process was incomplete. Our results indicate the crucial role of Pseudogymnoascus in decomposing low-quality, highly melanized necromass with a high C:N ratio in Arctic soils, underscoring its importance in carbon cycling in the Arctic tundra. Notably, we observed dynamic changes in bacterial communities, with increasing richness over time and a shift from copiotrophic to oligotrophic species specializing in decomposing recalcitrant material. Our study indicates the strong potential that fungal necromass can play in carbon sequestration of arctic soils and reveals the distinct dynamics between rather stable fungal and rapidly changing bacterial communities associated with the decomposing fungal necromass in the Arctic tundra. These findings enhance our understanding of microbial succession during decomposition in extreme environments and highlight the potentially differing roles of fungi and bacteria in these processes.

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

—

OECD FORD branch

10606 - Microbiology

Project

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

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Environmental Microbiome

ISSN

2524-6372

e-ISSN

2524-6372

Volume of the periodical

20

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

75

UT code for WoS article

001512307600001

EID of the result in the Scopus database

2-s2.0-105008739384