Rapid response to experimental warming of a microbial community inhabiting High Arctic patterned ground soil
Newsham, Kevin K. ORCID: https://orcid.org/0000-0002-9108-0936; Danielsen, Birgitte Kortegaard; Biersma, Elisabeth Machteld ORCID: https://orcid.org/0000-0002-9877-2177; Elberling, Bo; Hillyard, Guy; Kumari, Priyanka; Priemé, Anders; Woo, Cheolwoon; Yamamoto, Naomichi. 2022 Rapid response to experimental warming of a microbial community inhabiting High Arctic patterned ground soil [in special issue: Polar Ecosystem: Response of Organisms to Changing Climate] Biology, 11 (12), 1819. 17, pp. https://doi.org/10.3390/biology11121819
Before downloading, please read NORA policies.
|
Text (Open Access)
© 2022 by the authors. Licensee MDPI, Basel, Switzerland. biology-11-01819.pdf - Published Version Available under License Creative Commons Attribution 4.0. Download (2MB) | Preview |
Abstract/Summary
The influence of climate change on microbial communities inhabiting the sparsely vegetated patterned ground soils that are widespread across the High Arctic is poorly understood. Here, in a four-year experiment on Svalbard, we warmed patterned ground soil with open top chambers and biannually irrigated the soil to predict the responses of its microbial community to rising temperatures and precipitation. A 1 °C rise in summertime soil temperature caused 44% and 78% increases in CO2 efflux and CH4 consumption, respectively, and a 32% increase in the frequency of bacterial 16S ribosomal RNA genes. Bacterial alpha diversity was unaffected by the treatments, but, of the 40 most frequent bacterial taxa, warming caused 44–45% reductions in the relative abundances of a Sphingomonas sp. and Ferruginibacter sp. and 33–91% increases in those of a Phenylobacterium sp. and a member of the Acetobacteraceae. Warming did not influence the frequency of fungal internal transcribed spacer 2 copies, and irrigation had no effects on the measured variables. Our study suggests rapid changes to the activities and abundances of microbes, and particularly bacteria, in High Arctic patterned ground soils as they warm. At current rates of soil warming on Svalbard (0.8 °C per decade), we anticipate that similar effects to those reported here will manifest themselves in the natural environment by approximately the mid 2030s.
Item Type: | Publication - Article |
---|---|
Digital Object Identifier (DOI): | https://doi.org/10.3390/biology11121819 |
ISSN: | 2079-7737 |
Additional Keywords: | carbon dioxide (CO2); climate change; cryoturbation; frost boils; greenhouse gases; methane (CH4); non-sorted circles; soil bacteria; soil fungi; Svalbard |
Date made live: | 15 Dec 2022 12:06 +0 (UTC) |
URI: | https://nora.nerc.ac.uk/id/eprint/533294 |
Actions (login required)
View Item |
Document Downloads
Downloads for past 30 days
Downloads per month over past year