The datasets were obtained by Tilman et al. (2001: Tilman, D., Knops, J., Wedin, D., Reich, P., Ritchie, M. & Siemann, E. Diversity and productivity in a long-term grassland experiment. Science, 294, 843-846) and Langenheder et al. (2010: Langenheder, S., Bulling, M. T., Solan, M. & Prosser, J. I. Bacterial Biodiversity-Ecosystem functioning Relations Are Modified by Environmental Complexity. PLoS ONE, 5, e10834. doi:10.1371/journal.pone.0010834). The R-files were written by Camille Richon and Benoît Jaillard
