Figure 1.

(a) The relationship between the number of parasitoid species on each farm and the total parasitism rate per farm. (b) The relationship between total parasitoid richness per farm and coefficient of variation (CV) in parasitism rates of insect herbivores across time. (c) The relationship between CV in parasitism rates and mean parasitoid richness per time point. (d) The relationship between CV in parasitism rates and CV in the number of species per time period. The black circles and black regression line represent conventional farms and the grey squares and grey regression line represent organic farms.