Longleaf pine proximity effects on air temperatures and hardwood top-kill from prescribed fire

Fire Ecology

Table 3 Model comparison for prediction of time over 60 °C during prescribed fires in longleaf pine forest in southwest Georgia, USA, during May 2016. Bold font indicates best model

Model	K^a	L	R²	AICc	Δ_i
Intercept-only (null)	2	−160.43	0.00	327.11	49.51
NE^b	4	−137.43	0.29	283.37	5.77
NE + wiregrass	5	−136.39	0.30	283.82	6.22
NE + wiregrass + NE ∙ wiregrass	6	−137.13	0.29	286.92	9.32
NE + wiregrass moisture	5	−133.57	0.33	277.60	0.00

^aK = number of parameters, L = log-likelihood, R² = adjusted R², AICc = sample-size-corrected Akaike’s Information Criterion, and Δ_i indicates strength of support from the data in comparison to the best model (Δ_i < 2 = substantial support, 4 < Δ_i < 7 = considerably less support, and Δ_i > 10 = essentially no support; Burnham and Anderson 2002)
^bNE is a neighborhood model based on dbh and distance of nearby longleaf pine trees