C-N-P-Release Treeline

1. Chemical characteristics of litter layer sampled along elevation gradient across treeline ecotones in the Khibiny mountains (birch) and South Urals (spruce) 2. Release of C-N-P during decomposition at 5°C and 15° studied in an incubation experiment with microlysimeters 3. Data on microbial biomass C-N-P, potential activity of C-N-P requiring enzymes in the litter layer 4. Mineralization of 13C labeled glucose-6 phosphate, microbial 13C uptake, and net P immobilization of released P to identify microbial processing of labile organic P