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Table 2. Results of regression on distance matrices analyses on the effects of landscape variables on the genetic differentiation F _ST among the study populations of Lychnis flos-cuculi in Switzerland using different corridor widths.

Corridor width	R²	Distance	Agriculture	Forest	Ditch verges	Settlements
50 m	0.125	NS	NS	+ (**)	NS	NS
100 m	0.134	NS	NS	+ (**)	NS	NS
300 m	0.147	NS	NS	+ (**)	NS	NS
500 m	0.119	NS	NS	+ (*)	NS	NS
1000 m	0.121	+ (*)	NS	NS	NS	NS

Abbreviation: NS, nonsignificant variable.

The symbol ‘+' refers to the positive effect of a variable on pairwise genetic differentiation.

*P⩽0.05 and **P⩽0.01.

Table 2. Results of regression on distance matrices analyses on the effects of landscape variables on the genetic differentiation F ST among the study populations of Lychnis flos-cuculi in Switzerland using different corridor widths.