highly significantP < 0.001
Similar results were obtained with the Aster framework: The interaction between population and planting habitat was highly significant (χ 2 = 1239, df = 14, P < 0.001) in the full model, and population terms were significant in separate models by planting habitat (χ 2 = 1757, df = 14, P < 0.001 and χ 2 = 986.7, df = 14, P < 0.001 in the roadside and scrub, respectively).