Proxies for use in biochar decay models: Hydropyrolysis, electric conductivity, and H/Corgmolar ratio. - Hagemann, Nikolas; Schmidt, Hans-Peter; Bucheli, Thomas D.; Grafmüller, Jannis; Vosswinkel, Silvio; Herdegen, Volker; Meredith, William; Uguna, Clement N.; Snape, Colin E. (PLoS ONE, 2025)