Flora and Fauna Changes During Conversion from Conventional to Organic Farming

Table 3.7.   Schematic summary of Lepidoptera densities analysed in relation to the density of flowering dicotyledonous weeds. P-values of significant factors are given (p < 0.05). The percentage of variation explained by the reduced model is given in brackets. Factor Class / Continuous Lepidoptera adults (93%) Period Class variable Year(Period) Class variable <0.0001 Crop Class variable Crop×Period Class variable Field Class variable 0.0004 Plot(Field) Class variable Density of flowering weeds Covariate 0.0053 Density of flowering weeds×Crop×Period Covariate