Table 4. Probability of individual adult Sympetrum depressiusculum dispersing a given distance, estimated from regression-based models (inverse power function, IPF; negative exponential function, NEF) and observed data.

Model	Fitted function	R2	0.5 km	1.0 km
IPF	lnI = −1.98 −1.03lnD	0.61	0.2805	0.1379
NEF	lnI = −0.74 −3.77D	0.94	0.3185	0.0484
Observed			0.3421	0.0263

R² is the coefficient of determination.