Study area	Contribution to coupling strength				GSL trend		NPP_leaf trend		n
Study area	Intercept	Slope	R²	p-value	R²	p-value	R²	p-value	n
Ivvavik	0.1229	0.0179	0.69	0.002	0.16	0.286	0.64	0.003	11
Bathurst	0.0111	0.0361	0.62	0.011	0.07	0.509	0.89	0.0001	9
Sirmilik	0.0165	0.0123	0.83	0.002	0.91	0.0003	0.73	0.007	8
Torngat	0.0371	0.0282	0.57	0.031	0.17	0.315	0.69	0.010	8