Skip to main content

Table 11 Fixed effects and associated hypotheses (HA from Table 5) in top models of adult buprestid or cerambycid activity across five bark beetle outbreak sites sampled in the greater Sierra Nevada region of California, USA, during the summer of 2016. QAICc = quasi-Akaike’s information criterion, corrected for small sample size; BA = basal area; Neg = negative; Pos = positive; DBH = diameter at breast height

From: Patterns of woodboring beetle activity following fires and bark beetle outbreaks in montane forests of California, USA

Response Model rank Predictor (fixed effects) Effecta ΔQAICc ΔNull HA
Adult buprestid activity 1 Live tree BA Neg*** 0.00 25.85 M, S
2 Bark beetle activity Pos** 20.97 4.88 C
3 Elevation Neg** 21.20 4.65 G
4 Longitude Neg** 21.97 3.88 G
5 Needles retained Pos** 22.36 3.49 A
Adult cerambycid activity 1 Host tree taxon = cedar Neg** 0.00 4.02 H
2 Broken-top tree = true Neg** 1.00 3.02 A
3 DBH Neg** 1.38 2.64 G
4 Host tree taxon = fir Pos* 3.46 0.56 H
5 Null   4.02 0.00  
  1. ans (P > 0.05), * (P < 0.05), ** (P < 0.01), *** (P < 0.001)