"Association sign";Range;Density;"Assortativity coefficient";"Assortativity degree" Positive;"Native (Spain)";0.04;0.06;0.06 Positive;"Invaded (Chile)";0.07;0.21;0.10 Negative;"Native (Spain)";0.03;0.01;0.11 Negative;"Invaded (Chile)";0.06;-0.10;0.02