Skip to main content

Table 3 Generalized linear mixed model predicting first-year survival of resprouting plants (n =3 22) following 13 prescribed fires, from 2006 to 2010, at Archbold Biological Station, Venus, Florida, USA, where the effect of prescribed fire on resprouting Florida vegetation was examined. Plants within transects were not independent so transect was evaluated as a random effect (variance < 0.001) in the model. Variables included maximum fire temperature, residence time in seconds (log), burn season, habitat, and species groups. Reference categories for burn season were “Fire,” “Scrubby Flatwoods” for habitat, and “Oaks” for species groups. For each variable, the estimated coefficient (β ± standard error [SE]) shows the relationship and magnitude of change with the probability of survival. Sample size (n) and mean first-year survival is provided for each group. Marginal predictors are in italics (P < 0.1). The random effects of transect were also highly significant (P < 0.001)

From: Are fire temperatures and residence times good predictors of survival and regrowth for resprouters in Florida, USA, scrub?

Fixed effects β (SE) P-value R2 n First-year survival (%)
Intercept 2.92 (1.848) 0.114 0.039   91.0
Maximum temperature <0.01 (0.001) 0.757 <0.001 322  
Residence time (log) −0.26 (0.744) 0.727 0.001 322  
Burn season Fire     167 89.2
Wet 0.63 (0.634) 0.323 <0.001 85 94.1
Dry 0.93 (0.736) 0.204 0.001 70 91.4
Habitat Scrubby flatwoods     143 93.7
Sandhill 0.39 (0.678) 0.565 <0.001 72 94.4
Sand pine–oak scrub 1.13 (0.673) 0.094 0.004 36 83.3
Flatwoods −0.84 (0.559) 0.131 0.004 71 85.9
Species group Oaks     97 93.8
Palms 1.11 (1.101) 0.313 0.007 48 97.9
Ericads −0.32 (0.653) 0.620 0.001 70 91.4
Graminoids −0.65 (0.723) 0.368 0.002 32 87.5
Shrubs −0.92 (0.564) 0.101 0.008 75 84.0