Climate impacts
Arctic warming halves moist-tundra mycorrhizae
Open access · cc by · source: Europe PMC
Open-top chamber warming cut moist tussock ECM OTU richness from 138 to 71, but dry tundra fungal communities showed no significant treatment effect.
Study at a glance
- Design
- Other — ITEX open-top chamber warming vs controls with ECM ITS2 sequencing near Toolik, Alaska
- N
- N=20 · 20 plots (moist tussock and dry tundra, warmed vs control)
- Population
- Ectomycorrhizal basidiomycetes in Alaskan moist tussock and dry tundra
- Outcome
- ECM OTU richness and community composition under experimental summer warming
Structured fields used in claim comparison tables when every cited study has a complete layer.
Key findings
343 ECM OTUs; four genera held ~82% of richness. Moist tussock plot richness fell from 59±21 to 20±18 OTUs with warming (P=0.013). Dry tundra composition was uncorrelated with treatment (P=0.4288).
Methodology
ITS2 Ion Torrent sequencing of ectomycorrhizal basidiomycetes from ITEX open-top chambers versus controls in moist tussock and dry tundra near Toolik, Alaska.
Limitations
Sequence presence/absence is not proven function or carbon-flux change; OTCs also alter humidity and snow, so temperature is not fully isolated.
How this study connects
Role on claims
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This library holds 13 empirical papers on climate impacts with measured outcomes rather than reviews.
Evidence for the claim as stated.
Open-top chamber warming cut moist tussock ECM OTU richness from 138 to 71, but dry tundra fungal communities showed no significant treatment effect.
Evidence for the claim as stated.
A hotspot, a forest plot or a paleo assemblage does not fix global climate sensitivity.
Evidence for the claim as stated.
Open questions
Tensions this paper is part of
From concept pages' “where studies disagree.” Disagreement means the same question; scope means different assays, populations, or outcomes.
A hotspot, a forest plot or a paleo assemblage does not fix global climate sensitivity.
Related papers in this topic
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