The effects of locality type (field experiment) and soil type (i.e. cultivating species in the feedback experiment) on aboveground biomass of A) Anthericum ramosum, B) Brachypodium pinnatum, C) Bromus erectus and D) Inula salicina.
The data from the field experiment are estimates of biomass (number of leaves x length of the longest leaf) and were put on a scale comparable to biomass in grams from the feedback experiment. Columns within a panel sharing the same letter are not significantly different (p > 0.05). Black columns represent dominant species on its locality/soil type. As the patterns of the feedback in the two soil origins were largely similar, they were combined in the graphs for simplicity.