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VIR
- L. Deng
BAM
- N. Segata (Italy)
MEM: Mycorrhizal Fungal Niches and Vulnerability to Climate Change
- S. Kivlin (United States of America)
Abstract
Background and Aims
Climate change is affecting every organism on the planet. Yet, some organisms, in particular mycorrhizal fungi have the potential to both be impact by climate change and feedback to accelerate or dampening future warming via their key role in the carbon cycle. Determining fungal environmental tolerances and responses to climate change for unobservable and unculturable taxa belowground, such as arbuscular mycorrhizal (AM) and ectomycorrhizal (EM) fungi, remains one of the largest challenges in microbial ecology.
Species distribution models (SDMs) can provide hypotheses for drivers of mycorrhizal fungal niches and therefore vulnerability to climate change.
Using SDMs, AM fungi had up to 10x larger spatial ranges and 12x larger niches than EM fungi. Both AM and EM fungal niches were largely structured via climatic axes such as mean annual temperature or potential evapotranspiration with some influence of soil properties, disturbance regime and plant cover.
Because EM fungi have smaller niches and smaller geographic extents while also occurring in colder and drier habitats, they may be more susceptible to climate change compared to AM fungi.