10.1371/journal.pone.0213426.g003 Rachel B. Anderson Rachel B. Anderson Partial dependence plots for the nine most influential variables in the boosted regression tree (BRT) model predicting probability of American Bullfrog (BF; <i>Lithobates catesbeianus</i>) presence in ponds. Public Library of Science 2019 amphibian Invasive species habitat California Red-legged Frog regression tree approach pond surface area American Bullfrog California Red-legged Frogs predictor 2019-03-07 18:35:45 Figure https://plos.figshare.com/articles/figure/Partial_dependence_plots_for_the_nine_most_influential_variables_in_the_boosted_regression_tree_BRT_model_predicting_probability_of_American_Bullfrog_BF_i_Lithobates_catesbeianus_i_presence_in_ponds_/7815089 <p>Predictors were measured during a field study of California Red-legged Frogs (<i>Rana draytonii</i>) in Central California. Relative importance is depicted for each predictor, holding all other predictors at their mean. See <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0213426#pone.0213426.t001" target="_blank">Table 1</a> for units and explanations of each predictor.</p>