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Table 3.7. Habitat characteristics related to pileated woodpecker pair territory size (n = 14) with Pearson correlation and regression at Hinton, Alberta. Habitat variable Range SE x¯ r r2 Mean tree dbh 13.4–19.4 16.1 1.9 -0.35 0.13 % deciduous + mixed 6.1–68.5 35.6 19.2 -0.21 0.04 % lowland spruce 1.3–34.4 10.2 9.2 0.32 0.13 % upland coniferous 15.6–87.3 45.5 19.4 0.06 0.00 % upland 42.5–94.8 73.0 13.8 -0.54a 0.25 % pole + mature + old 63.9–99.4 84.5 10.0 -0.43 0.19 % non-forest + young 0.6–36.1 15.5 10.0 0.43 0.19 Tree density 640.3–1,154.0 824.7 151.7 0.10 0.01 % forest cover 71.7–99.4 91.3 8.0 0.06 0.00 Large dead tree density 1.3–1.7 1.8 0.6 -0.21 0.04 Potential winter foraging substrate density 4.1–14.1 8.7 2.9 -0.75a 0.56b Dead tree density 15.2–47.4 26.6 10.2 -0.12 0.01 Medium tree density 137.6–389.9 261.9 72.8 -0.24 0.06 Large tree density 55.9–161.7 111.8 32.9 -0.41 0.17 % trembling aspen 0.2–35.9 14.0 9.6 -0.03 0.00 % white spruce 2.2–46.2 26.0 14.7 -0.46 0.22 % trembling aspen + white spruce 7.2–62.5 40.0 19.3 -0.37 0.14 % tall stands 25.1–74.0 43.8 14.7 -0.25 0.06 74.2–99.4 92.9 6.8 -0.88a 0.78b % stands ≥7 m Mean stand height 10.3–20.6 14.1 3.0 -0.40 0.16 % closed stands 53.3–90.2 70.8 11.4 -0.37 0.14 Mean canopy closure 34.5–52.1 40.8 5.0 -0.26 0.07 0.0–49.5 18.9 17.1 0.16 0.05 % ≤50 years % >75 years 30.7–93.1 59.1 19.4 -0.25 0.01 % >100 years 18.2 – 80.7 47.7 20.7 -0.12 0.02 Mean stand age 64.1–124.4 85.1 18.0 -0.28 0.07 Mean cavity tree dbh 40.9–52.1 45.6 3.5 -0.07 0.00 Cavity tree density 0.2–10.6 1.8 2.7 -0.56a 0.32 Edge index 0.2–1.7 0.8 0.6 0.08 0.01 Access index 1.3–5.5 3.5 1.4 0.25 0.06 Fragmentation index 1.4–6.7 4.4 1.6 0.24 0.24 Potential cavity tree density 5.5–55.1 23.1 13.1 -0.83a 0.69b a significant correlation, P ≤ 0.05. b significant regression, P ≤ 0.05.

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Pwp 2001 04 rpt phdthesis pileatedwoodpeckerhabitatecologyinabfoothills  
Pwp 2001 04 rpt phdthesis pileatedwoodpeckerhabitatecologyinabfoothills  

http://foothillsri.ca/sites/default/files/null/PWP_2001_04_Rpt_PhDThesis_PileatedWoodpeckerHabitatEcologyinABFoothills.pdf

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