Figure 2 | Scientific Reports

Figure 2

From: Accessible areas in ecological niche comparisons of invasive species: Recognized but still overlooked

Figure 2

Analogous environments in native and invaded areas. Top: visualization of similar overlapping environments in native (blue convex polyhedron) and invaded (red convex-polyhedron) areas for Gray Squirrels. Note the many unshared environments across the native range (gray points). Axes are the first three principal components derived from the original climate layers. Bottom: geographic areas with analogous environments in the native range of North America (blue). Note the many unshared environments across the native range (gray areas). Top figure done using NicheA 3.0 [ref. 48]. Bottom figure done using ArcGIS 10.2 (ESRI, Redlands, CA, http://www.esri.com/).

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