Fig. 1. Effect of biosolids type on mineralization of organic N in soils amended with biosolids during 26 weeks of incubation (the means across two soils and two temperatures, % of initial organic N). Error bars are 95% confidence intervals. AnM, anaerobically digested municipal biosolids; AeM, aerobically digested municipal biosolids; PP1 and PP2, two pulp and paper industrial biosolids from two aerated wastewater stabilization lagoons.