Fig. 3From: Chinook salmon depth distributions on the continental shelf are shaped by interactions between location, season, and individual conditionRelative importance of explanatory variables in random forest regression model predicting Chinook salmon mean bathymetric depth ratio. Importance is quantified as the difference (mean among trees) in root mean square error when a given variable is excluded during out-of-bag prediction. An uncorrelated random variable will have a difference of zero. Colors represent categories of explanatory variablesBack to article page