The origin of soil organic matter controls its composition and bioreactivity across a mesic boreal forest latitudinal gradient

A warmer climate reduces the bioreactivity of isolated boreal forest soil horizons without increasing the temperature sensitivity of respiratory CO2 loss

Enrichment of 13C with depth in soil organic horizons is not explained by CO2 or DOC losses during decomposition

Amino acid δ15N indicates lack of N isotope fractionation during soil organic nitrogen decomposition

Soils isolated during incubation underestimate temperature sensitivity of respiration and its response to climate history

Net fluxes of CO2, but not N2O or CH4, are affected following agronomic-scale additions of urea to prairie and arable soils