Carbon and Oxygen Gas Exchange in Woody Debris: The Process and Climate-Related Drivers

The carbon-to-oxygen relationship and gas exchange balance, organic carbon to CO2 conversion intensity efficiency, their relevance climate parameters wood decay fungi were investigated for birch woody debris (WD) in the Mid-Urals mixed pine forests. It was shown that, within range of temperatures from 10 40 °C relative moisture (RM) 40% 70%, aerobic observed WD, encompassing physiologically entwined processes emission O2 uptake. Their volumetric ratio (0.9) confirmed that (1) WD represents a globally significant source appropriate consumer (2) oxidative is highly efficient with an average released consumed equal 90%. balance oxidizing efficiency not affected by either fungal species tested or temperature. However, unique each fungi, it could be treated as climate-reliant parameter driven temperature (Q10 = 2.0–2.1) (the latter induced corresponding trend value changes uptake). Depending on direction degree change moisture, combined effect led its strengthening weakening; otherwise, stabilized. Aerobic respiration Basidiomycetes essential prerequisite major biotic factor exchange, while are climatic controllers only.