Table 2.

Variables included in linear mixed models developed to explain variation in the log response ratio of species richness in planted and secondary forest stands relative to old‐growth forest

	Variables in modelb
Modela	group	log10(age)	group*log10(age)	lat	trans	df	AICc	∆AICc	Marginal R 2
Null						3	94.81	20.01	0.17
1	+	+	+	+		17	74.80	0.00	0.56
2	+	+	+			16	79.70	4.90	0.54
3	+	+	+	+	+	20	80.83	6.03	0.58

^aIn addition to the null model, only models with ∆AICc < 7 are shown (i.e., those with considerable support [Burnham & Anderson 2002]).

^bAbbreviations: group, functional groups comprising lichens, ectomycorrhizal fungi, litter fungi, deadwood fungi, saproxylic beetles, and non‐saproxylic beetles in coniferous and broadleaved forest; log₁₀(age), log₁₀ of stand age in years; lat, centered latitude; trans, transition category representing the origin of the treatment stands, including clearcut planted, clearcut secondary, fire planted, and fire secondary.