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Table 6 Comparisons of raw data from 11 burned sites and five bark beetle outbreak sites sampled in the greater Sierra Nevada region of California, USA, during the summers of 2015 and 2016, summarized by transect as count ratios or mean ± standard error. BBO = bark beetle outbreak, BA = basal area, DBH = diameter at breast height

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

Featurea Burned sites BBO sites
Dominant tree taxon (count ratio) Yellow pine (2.71:1) White fir (1.48:1)
BA (m2 ha−1)** 31.69 ± 1.27 39.28 ± 2.59
Snag BA (m2 ha−1)** 14.87 ± 1.31 11.20 ± 1.20
Mean DBH (cm) ns 46.17 ± 1.22 45.42 ± 1.52
Snag mean DBH (cm)ns 42.38 ± 1.26 44.45 ± 2.27
Larval sampling snag DBH (cm)** 36.55 ± 1.23 40.54 ± 1.50
Bark beetle presence per quadrat*** 0.61 ± 0.04 1.46 ± 0.05
Larval woodborer activity per quadratns 1.99 ± 0.08 1.74 ± 0.12
Adult buprestids captured (n)ns 1.00 ± 0.12 0.88 ± 0.11
Adult cerambycids captured (n)ns 0.72 ± 0.07 0.90 ± 0.11
  1. ans (P > 0.05), * (P < 0.05), ** (P < 0.01), *** (P < 0.001)