Skip to main content

Table 10 Fixed effects and associated hypotheses (HA from Table 5) in top models of adult cerambycid activity across 11 burned sites sampled in the greater Sierra Nevada region of California, USA, during the summers of 2015 and 2016. QAICc = quasi-Akaike’s information criterion, corrected for small sample size; DOY = day of year; Neg = negative; Pos = positive; BA = basal area

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

Response Model rank Predictor Effecta ΔQAICc ΔNull HA
Adult cerambycid activity 1 Null   0.00 0.00  
Adult
Xylotrechus longitarsus activity
1 Fire age Neg** 0.00 4.66 A
Elevation Pos*** G
Ignition date Negns P
2 Elevation Pos*** 0.02 4.64 G
3 Host tree taxon = fir Pos** 0.76 3.90 H
4 Elevation Pos*** 2.04 2.62 G
Elevation2 Posns G
5 Snag BA Pos*** 2.68 1.98 M, S
Adult Monochamus species activity 1 Fire age Neg* 0.00 9.06 A
Burn severity = low Pos** S
Burn severity = moderate Pos*** S
2 Burn severity = low Pos** 1.35 7.71 S
Burn severity = moderate Pos*** S
3 Ignition date (DOY) Negns 1.56 7.50 P
DOY × DOY Negns P
Fire age Neg*** A
DOY × DOY × Fire age Pos*** P, A
4 Needles retained Pos*** 2.64 6.42 A
5 Fire age Neg* 3.16 5.90 A
Burn severity = low Pos** S
Burn severity = moderate Pos*** S
Ignition date (DOY) Negns P
DOY × DOY Negns P
  1. ans (P > 0.05), * (P < 0.05), ** (P < 0.01), *** (P < 0.001)