Compiled nonstructural carbohydrates, isotopes, and respiration data for tree tissues and fungi collected in Stillberg, Switzerland

The study conducted in the Stillberg ecotone, located in the Central Swiss Alps near Davos (46°47ʹN, 9°52ʹE). We collected samples of fine roots in three size classes, branches, and needles from Larix decidua and Pinus mugo trees, and sporocarps of ectomycorhizal and saprotrophic fungi. Analyses includs: Δ14C - respired CO2 from fine roots and branche, water-soluble C and a-cellulose from all tree tissues, fungi sporocarps, tree rings and additional samples to construct local atmospheric Δ Δ14CO2. δ15N - bulk tree tissues and fungi δ13C - respired CO2 of fine roots and branches, from all tree tissues water-soluble C, starch, and bulk tissues. Annual growth rings of fine roots. Glucose, fructose, sucrose, and starch of tree tissues.