MDS analysis showing variation in A. glycines (CAD) and natural enemies among sites, variation and cluster among A. glycines (CAD) and natural enemies, and explanatory variables: year, plant nutrients, and landscape parameters. The length and direction of vectors indicates the strength and direction of the correlation, and only explanatory variables significant at P < 0.05 are shown. Axis one and two explained 23.2 and 64.8% of the variation in these data, respectively.