Supplement 1. Complete data set of all measured variables of 2011 and 2012.

File List data.txt (MD5: 425b0832b1d6aa48ae879c9b3044ba68) Description The data.txt file is a tab-separated file. It contains the raw data on soil microbial biomass and functions. Column definitions Plotcode Year (2011/2012) Plant species richness (1, 4, 16) Temperature (ambient, + 1.5°C, + 3°C) Plant functional groups: Legumes (0,1) Plant functional groups: Forbs (0,1) Plant functional groups: Woddy species (0,1) Plant functional groups: C3-grasses (0,1) Plant functional groups: C4-grasses (0,1) Water content % Microbial biomass Cmic Microbial Growth after addition of C Microbial Growth after addition of CN Microbial Growth after addition of CP Microbial Growth after addition of CNP Enzyme activity: ß-1,4-glucosidase Enzyme activity: Cellobiohydrolase Enzyme activity: ß-1,4-N-acetylglucosaminidase Enzyme activity: Acid phosphatase Enzyme activity: Phenol oxidase Enzyme activity: Peroxidase Enzyme activity: Urease Mass specific enzyme activity: ß-1,4-glucosidase Mass specific enzyme activity: Cellobiohydrolase Mass specific enzyme activity: ß-1,4-N-acetylglucosaminidase Mass specific enzyme activity: Acid phosphatase Mass specific enzyme activity: Phenol oxidase Mass specific enzyme activity: Peroxidase Mass specific enzyme activity: Urease