The dried wood blocks were reweighed to determine moisture content and dry wood biomass. The process of drilling, weighing and drying was also carried out for 12 additional wood blocks (3 of each species), not incubated in the microcosms, to calculate the average initial concentration of C and nitrogen (N) in wood in each species. Sawdustwas ball-milled to a fine powder and analyzed for C and N concentration using an ECS 4010 Elemental Analyzer