Table 2.

Summary of an ANOVA showing the results of a Poisson regression (GLM) of seedling recruitment (survival to the second growing season) in response to disturbance, sown species and environmental gradient

Variable	df	Explained deviance	Residual deviance	AIC	Cross-validated r 2
Intercept	1
Disturbance	1	672	1270	1274	0.168
+ Species	11	254	1016	1042	0.245
+ NMS-1	1	100	916	944	0.297
+Species × NMS-1	11	112	804	854	0.287
+Species × disturbance	11	28	888	938	0.293
+NMS-1 × disturbance	1	7	909	939	0.296

The effects of the interaction terms were evaluated individually, one at a time, in the basic model. The consumed degrees of freedom (df), the explained deviance, the residual deviance after adding the variable, and the cross-validated r ² from a correlation between cross-validated predictions and observed recruitment are provided