Sara Hallin

The paper examines winter microbial dynamics in Arctic tundra soils, showing seasonal shifts in community composition and nitrogen cycling potential.

The paper measures N2O concentrations in the rhizosphere and links them to root growth, O2 levels, and nutrient availability, showing their role in N2O formation.

The paper links diurnal N2O flux patterns in thawing arctic permafrost to microbial activity, showing that denitrifier genes are transcriptionally active and drive N2O dynamics.

The paper analyzes denitrification gene distribution across microbial genomes and biomes, finding partial denitrifiers dominate and complete denitrifiers are more metabolically flexible.

The paper shows that diverse crop rotations reduce yield-scaled nitrogen losses through denitrification by improving microbial biomass and functional guilds involved in nitrogen cycling.