Climate impacts
Moss and organic soil keep permafrost closer to the surface
Open access · cc by · source: Europe PMC
Across four Canadian boreal sites, moss and organic-matter thickness lowered active-layer thickness; the tobit model explained 73% of ALT variation.
Study at a glance
- Design
- Cross-sectional — Field survey of active-layer thickness vs moss/OM and canopy LAI in burned and unburned black spruce
- N
- N=108 · 108 plots across four Canadian boreal sites
- Population
- Burned and unburned black-spruce stands in Canadian boreal forest
- Outcome
- Active-layer thickness predicted by moss, organic matter, moisture, slope, and LAI
Structured fields used in claim comparison tables when every cited study has a complete layer.
Key findings
Thicker moss reduced ALT exponentially. Thicker OM also reduced ALT, interacting with slope. Tree LAI and moisture interactions mattered. Combined predictors explained 73% of ALT (pseudo R² = 0.734).
Methodology
Researchers measured ALT, moss/OM thickness, soil moisture, slope, and tree/understory LAI in burned and unburned black-spruce stands, then fit tobit regressions and SEM because some ALTs exceeded the 150 cm probe.
Limitations
Four sites in one region cannot map pan-Arctic carbon release; 150 cm censoring and a single season limit inference about long-term thaw trajectories.
How this study connects
Role on claims
Each row is a claim on a concept or method page where this paper supports, challenges, or qualifies the statement. Roles are hand-checked — not a model guess.
This library holds 13 empirical papers on climate impacts with measured outcomes rather than reviews.
Evidence for the claim as stated.
Across four Canadian boreal sites, moss and organic-matter thickness lowered active-layer thickness; the tobit model explained 73% of ALT variation.
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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