Island	Variable	Confounding	Mantel statistic r	p-value
El Hierro	geographic	ecological	0.0469	0.253
	ecological	geographic	-0.0202	0.575
La Palma	geographic	ecological	-0.0949	0.896
	ecological	geographic	-0.0219	0.615
La Gomera	geographic	ecological	-0.1694	0.813
	ecological	geographic	0.2394	0.110
Tenerife	geographic	ecological	0.2047	0.002**
	ecological	geographic	-0.1323	0.990
Gran Canaria	geographic	ecological	0.0582	0.157
	ecological	geographic	-0.0971	0.975
Fuerteventura	geographic	ecological	-0.0232	0.478
	ecological	geographic	0.0676	0.381