Causal interactions identified in hypotheses on relationships between biodiversity, productivity, light and nutrients: dataset to construct causal networks.

The data was derived from studies in the literature that have experimentally tested the relation between plant diversity, light, nutrients and productivity. When looking at the methods and statistics of the studies, we noted down the effects that were tested (e.g., nutrient effect on biodiversity changes such as species richness, was noted down as a 1 in the matrix). This is not a meta-analysis, since we noted down the intended connections, not the effect sizes, as in most cases those were missing and the aim of the study was to collect information on hypotheses for comparison.