“…However, this assumed pattern occurs much less often than previously expected (Sagarin & Gaines, ; Santini, Pironon, Maiorano, & Thuiller, ). Quantitative approaches have addressed this issue with evidence‐based estimates of range centre considering species biology (Schwartz, Mills, Ortega, Ruggiero, & Allendorf, ), climatic suitability (Lira‐Noriega & Manthey, ; Micheletti & Storfer, ), and genetic differences (Griffin & Willi, ); and have demonstrated that disentangling the relative effects of geographic, ecological, and historical gradients is often difficult when interpreting patterns across broad spatial scales (Pironon, Villellas, Morris, Doak, & García, ). Another means to achieve greater insight into the generality and implications of CMH would be to identify model systems that naturally conform to “abundant‐centre” assumptions and provide a test of this theory with less influence of confounding factors.…”