Responses of soil hexapod communities to warming are mediated by microbial carbon and nitrogen in a subarctic grassland

0573913 - ÚVGZ 2024 RIV NL eng J - Journal Article
Ferrin, M. - Penuelas, J. - Gargallo-Garriga, Albert - Iribarren, P.A. - Janssens, I. A. - Maranon Jimenez, S. - Murienne, J. - Richter, A. - Sigurdsson, B.D. - Peguero, G.
Responses of soil hexapod communities to warming are mediated by microbial carbon and nitrogen in a subarctic grassland.
European Journal of Soil Biology. Roč. 117, JUL-AUG (2023), č. článku 103513. ISSN 1164-5563. E-ISSN 1778-3615
Research Infrastructure: CzeCOS IV - 90248
Institutional support: RVO:86652079
Keywords : Climate change * Environmental DNA * Metabarcoding * Microbial communities * Community composition * DOC * DON
OECD category: Ecology
Impact factor: 4.2, year: 2022
Method of publishing: Open access
https://www.sciencedirect.com/science/article/pii/S1164556323000493?via%3Dihub

Warming in subarctic ecosystems will be two-fold higher compared to lower latitudes under current climate change projections. While the effects of warming in northern ecosystems on plants and microorganisms have been extensively studied, the responses of soil fauna have received much less attention, despite their important role in regulating key soil processes. We analyzed the response of soil hexapod communities in a subarctic grassland exposed to a natural geothermal gradient in Iceland with increases of +3 and + 6 degrees C above ambient temperature. We characterized hexapod communities using environmental DNA (eDNA) metabarcoding. We analyzed the amounts of microbial carbon (Cmic), microbial N (Nmic), dissolved organic C (DOC) and dissolved organic N (DON) and then assessed whether these variables could help to account for the compositional dissimilarity of ground hexapod communities across temperatures. The increases in soil temperature did lead to changes in the composition of hexapod communities. The compositional differences caused by +6 degrees C plots were correlated with a decrease in Cmic and Nmic, soil DOC and DON. Our results highlight the response of soil hexapods to warming, and their interaction with microbial biomass ultimately correlated with changes in the availabilities of soil C and N.
Permanent Link: https://hdl.handle.net/11104/0344292