Figure 2
From: Alien plant invasions of protected areas in Java, Indonesia
PCA ordination of the plot by alien species matrix (excluding plots with no alien species). Plots in mountain parks are represented by triangles, from the lowland parks by circles, from closed forest by filled symbols, and from open habitats by unfilled symbols. The vectors show the predictors (altitude, slope, total N, potassium, clay, silt, trail width, and native shrub cover) significantly related to the ordination space at p < 0.05. UK = Ujung Kulon; GP = Gunung Gede Pangrango; MRP = Gunung Merapi; MRB = Gunung Merbabu; BTS = Bromo Tengger Semeru; MB = Meru Betiri; AP = Alas Purwo; BAL = Baluran.
