Available nutrients (TN, TC, NH4, NO3, PO4); enzymatic activity(BG, CB, XYL, NAG, LAP, PHOS, AG); root litter decomposition, mineral bound C loss and gains; moisture; PLFA microbial community data and ITS sequencing-derived arbuscular mycorrizal fungi, ectomycorrhizal fungi, saprotrophic fungi and not identified fungi proportions; for ambient and elevated CO2 conditions of mesh bags of different mesh opening sizes (1,25,1000um) containing different substrates (root litter and mineral bound C) incubated over a year in an Australian P-limited Eucalyptus forest