Data from a greenhouse experiment to test the effects of the heterogeneity and availability of water and nutrientes on plant community attributes

Data from a greenhouse microcosm experiment. The experiment had four treatments: nutrient availability (three levels: 40, 80 and 120 mg of N added as organic material), nutrient heterogeneity (two levels: organic material added homogeneously or as a patch), water availability (three levels: 125, 250 and 375 mL of water added per week) and water heterogeneity (two levels: watering five times a week or watering once a week). Microcosm contained assemblages formed by the grasses Lolium perenne L., Anthoxantum odoratum L. and Holcus lanatus L., the forb Plantago lanceolata L. and the legume Trifolium repens L. The following data were collected at the end of the experiment: total above- and belowground biomass (0-15 and 15-30 cm depth) at the assemblage level, aboveground biomass at the species level, root foraging precision at the assemblage level.