期刊
ECOLOGY LETTERS
卷 25, 期 1, 页码 52-64出版社
WILEY
DOI: 10.1111/ele.13903
关键词
alpine vegetation; belowground ecosystem functioning; biogeochemical cycles; ericaceous; microbial community; snow cover; soil microbiome; winter climate change
类别
资金
- Natural Environment Research Council [NE/N009452/1]
- Biotechnology and Biological Sciences Research Council [BB/S010661/1]
- BBSRC [BB/S010661/1] Funding Source: UKRI
- NERC [NE/N009452/1] Funding Source: UKRI
Climate change disproportionately affects mountain ecosystems, leading to reductions in winter snow cover and earlier snowmelt, with shrub expansion exacerbating these impacts on soil properties. Despite seasonal changes, shifts in vegetation can modulate belowground effects of future alpine climate change.
Climate change is disproportionately impacting mountain ecosystems, leading to large reductions in winter snow cover, earlier spring snowmelt and widespread shrub expansion into alpine grasslands. Yet, the combined effects of shrub expansion and changing snow conditions on abiotic and biotic soil properties remains poorly understood. We used complementary field experiments to show that reduced snow cover and earlier snowmelt have effects on soil microbial communities and functioning that persist into summer. However, ericaceous shrub expansion modulates a number of these impacts and has stronger belowground effects than changing snow conditions. Ericaceous shrub expansion did not alter snow depth or snowmelt timing but did increase the abundance of ericoid mycorrhizal fungi and oligotrophic bacteria, which was linked to decreased soil respiration and nitrogen availability. Our findings suggest that changing winter snow conditions have cross-seasonal impacts on soil properties, but shifts in vegetation can modulate belowground effects of future alpine climate change.
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