Climate change and permafrost

Intertwined degradation of plant diversity and permafrost in sub-Arctic palsa mires

This study quantifies how permafrost degradation affects plant biodiversity in sub-Arctic palsa mires, showing significant biodiversity loss in completely thawed mires and highlighting lichen loss and vascular plant shifts.

Immediate methane and carbon dioxide release from exposed permafrost at an active retrogressive thaw slump in the Canadian Arctic

The paper quantifies methane and carbon dioxide emissions from an active retrogressive thaw slump in the Canadian Arctic, showing significant greenhouse gas release from thawing permafrost.

Biotic versus environmental controls on microbial degradation of permafrost organic matter

This study investigates how biotic and environmental factors influence microbial degradation of permafrost organic matter using an in situ thaw experiment.

Growth Optimization Predicts Microbial Success in a Permafrost Thaw Experiment

The paper develops a genomic index to predict microbial success in permafrost thaw by analyzing growth optimization and validates it with incubation experiments.

Shrub and Sedge Rhizosphere Communities Display Distinct Affinities Toward Exudates and Soil Organic Matter Degradation: a Quantitative Stable Isotope Probing Analysis

This study compares microbial community responses to exudates and soil organic matter degradation in shrub and sedge rhizosphere soils using stable isotope probing.

Exploring Volatile Sulfur Production by Arctic Soil Bacteria and Emissions from Thawing Permafrost

This study measures volatile sulfur compound emissions from thawing permafrost and bacterial strains, showing similar VSCs are produced by both and linked to specific metabolic pathways.

Inferences about phenological shifts in an Arctic community vary with time-windows

This study shows that phenological shifts in an Arctic community vary with time-windows, revealing moderate warming trends and species-specific responses.

Nitrous Oxide Formation and Consumption in Thawing Permafrost: A Microcosm Study

This study investigates N2O formation and consumption in thawing permafrost using microcosms, finding that N2O formation exceeds consumption, likely driven by non-denitrifying bacteria.

The methane-cycling microbiome in intact and degraded permafrost soils of the pan-Arctic

This study identifies methanogen and methanotroph phylotypes in pan-Arctic permafrost soils and shows their spatial distribution and functional shifts after permafrost degradation.

Microbial Resuscitation and Growth Rates in Deep Permafrost: Lipid Stable Isotope Probing Results from the Permafrost Research Tunnel in Fox, Alaska

This study measures microbial resuscitation and growth rates in deep permafrost using lipid-SIP, finding extremely slow initial growth and community restructuring within six months of thaw.

Consistent microorganisms respond during aerobic thaw of Alaskan permafrost soils

This study identifies consistent microbial responses to permafrost thaw across different soil types in Alaska, showing increased biomass and specific taxa abundance linked to carbon flux.

Microbial community composition explains wintertime greenhouse gas fluxes in an oroarctic tundra ecosystem

The paper examines microbial community composition and its impact on wintertime greenhouse gas fluxes in an oroarctic tundra ecosystem, showing that microbial activity explains GHG emissions beyond abiotic factors.

Increases in Arctic extreme climatic events are linked to negative fitness effects on the local biota

This study links increased Arctic extreme climatic events to negative fitness effects on local biota, showing significant impacts on angiosperms and chordates.

Complex nitrogen redox couplings control methane emissions from Arctic upland yedoma taliks

This study examines methane and nitrogen oxide emissions from thawing Arctic yedoma permafrost, revealing seasonal microbial processes that influence greenhouse gas release.