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Microbial Biomass Governs Enzyme Activity Decay during Aging of Worm-Worked Substrates through Vermicomposting

Departamento de Ecoloxía e Biología Animal, Universidade de Vigo, Vigo E-36310, Spain

View larger version (14K): [in this window] [in a new window]   Fig. 1. Changes in (a) microbial biomass N (mean ± S.E.) and (b) basal respiration during incubation of vermicompost (n = 5). Different letters indicate significant differences at p < 0.05 (Tukey HSD) (dry wt. = dry weight; om = organic matter).

View larger version (28K): [in this window] [in a new window]   Fig. 2. Changes in (a) ß-glucosidase (mean ± S.E.), (b) cellulase, (c) protease, and (d) alkaline phosphatase during incubation of vermicompost (n = 5). Different letters indicate significant differences at p < 0.05 (Tukey HSD) (dry wt. = dry weight).