Fig. 4

Habitat suitability predicted from the gradient boosted model and spatial accuracy maps for whales displaying foraging behaviour in the South West of Western Australia (March–June, November). Shown is a continuous (0–1) relative habitat suitability, b thresholded suitable habitat (pink) and validated suitable habitat (red, suitable habitat restricted to areas with spatial AUC and spatial Kappa > 0.4) overlaid with geomorphologic features [32], c spatial distribution of model accuracy (spatial Kappa) and d spatial distribution of model accuracy (spatial AUC). Black dotted contours represent the 200 m bathymetry (indicative of shelf edge), and canyons are indicated in light grey. There is a complete overlap of validated (red) and thresholded (pink) suitable habitat north of Cape Naturalist (b) thus pink polygon is not fully visible