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Table 2 Shrub species richness model estimates with standard error and P-value for the main effects and interaction (treatment by years since treatment). Different letters depict significant differences in shrub cover at α ≤ 0.05. Numbers depict marginal significant levels 0.05 ≤ α ≥ 0.10. Significance codes: *** <0.001, ** <0.01, * <0.05, <0.1. Estimates (Est), standard errors (± SE), and P-values (P) are rounded to the nearest one hundredth. P-value of *** implies P-value <0.001.

From: Decade-Long Plant Community Responses to Shrubland Fuel Hazard Reduction

    Control Fire-fall Fire-winter Fire-spring Mastication-fall Mastication-spring
    Est ± SE P Est ± SE P Est ± SE P Est ± SE P Est ± SE P Est ± SE P
  Intercept   0.77±0.14 *** 0.61±0.09 *** 0.68±0.08 *** 0.44±0.09 *** 0.44±0.09 *** 0.44±0.09 ***
  Yr since treatment   −0.01±0.02 0.45 0.03±0.01 0.02* 0.01±0.01 0.48 0.00±0.01 0.77 0.03±0.01 0.01* 0.04±0.01 ***
Main effect Control AB1             
Fire-fall ACD −0.16±0.17 0.33           
Fire-winter A2C −0.10±0.17 0.55 0.06±0.12 0.59         
Fire-spring 2E −0.33±0.17 0.04* −0.17±0.13 0.18 −0.23±0.13 0.07       
Mastication-fall ED −0.37±0.17 0.03* −0.21±0.13 0.11 −0.27±0.12 0.03* −0.04±0.13 0.76     
Mastication-spring 1CE −0.27±0.16 0.10 −0.11±0.13 0.41 −0.17±0.12 0.17 0.06±0.13 0.60 0.10±0.12 0.39   
Slope   −0.05±0.03 0.07 −0.05±0.03 0.07 −0.05±0.03 0.07. −0.05±0.03 0.07. −0.05±0.03 0.07. −0.05±0.03 0.07.
Solar radiation index   0.03±0.03 0.34 0.03±0.03 0.34 0.03±0.03 0.34 0.03±0.03 0.34 0.03±0.03 0.34 0.03±0.03 0.34
Treatment × yr since treatment Control A1             
Fire-fall 12B 0.04±0.02 0.06.           
Fire-winter A 0.02±0.02 0.31 −0.02±0.02 0.27         
Fire-spring A2 0.01±0.02 0.67 −0.03±0.02 0.09. −0.01±0.02 0.5       
Mastication-fall B 0.04±0.02 0.04* 0.01±0.02 0.75 0.02±0.02 0.17 0.04±0.02 0.06.     
Mastication-spring B 0.05±0.02 0.01** 0.02±0.02 0.33 0.03±0.02 0.03* 0.05±0.02 0.01** 0.01±0.02 0.56