Page 34

24

Table 2.4. Cavity tree type and species used by pileated woodpeckers, compared to abundance at site, stand, and territory scales, at Hinton, Alberta, 1993â&#x20AC;&#x201C;98. Available treesa Cavity trees Site scale Stand scale Territory scale Tree n = 611 n = 2,140 n = 1,452 n = 15,330 type Tree species Proportion Conclusionb Proportion Conclusionb Proportion Proportion Conclusionb Live Trembling aspen 0.746 0.705 Use > Ab 0.399 Use > Ab 0.199 Use > Ab Balsam poplar 0.026 0.040 Use < Ab 0.040 Use < Ab 0.040 Use < Ab White spruce 0.000 0.100 Use < Ab 0.118 Use < Ab 0.316 Use < Ab Lodgepole pine 0.000 0.050 Use < Ab 0.058 Use < Ab 0.214 Use < Ab Subalpine fir 0.000 0.000 Use = Ab 0.006 Use < Ab 0.028 Use < Ab Black spruce 0.000 0.014 Use < Ab 0.012 Use < Ab 0.143 Use < Ab Snag Trembling aspen 0.059 0.039 Use > Ab 0.016 Use > Ab 0.006 Use > Ab Balsam poplar 0.005 0.003 Use < Ab 0.005 Use = Ab 0.005 Use = Ab White spruce 0.002 0.007 Use < Ab 0.011 Use < Ab 0.010 Use < Ab Lodgepole pine 0.000 0.002 Use = Ab 0.003 Use < Ab 0.015 Use < Ab Subalpine fir 0.000 0.000 Use = Ab 0.000 Use = Ab 0.000 Use = Ab Black spruce 0.000 0.000 Use = Ab 0.003 Use < Ab 0.009 Use < Ab Stub Trembling aspen 0.115 0.033 Use > Ab 0.006 Use > Ab 0.004 Use > Ab Balsam poplar 0.020 0.000 Use > Ab 0.001 Use > Ab 0.000 Use > Ab White spruce 0.015 0.002 Use > Ab 0.001 Use > Ab 0.001 Use > Ab Lodgepole pine 0.013 0.002 Use > Ab 0.001 Use > Ab 0.009 Use > Ab Subalpine fir 0.000 0.000 Use = Ab 0.000 Use = Ab 0.000 Use = Ab Black spruce 0.000 0.001 Use = Ab 0.000 Use = Ab 0.000 Use = Ab a Includes only trees >29 cm dbh and >7m height; smaller and shorter trees were rarely used by pileated woodpeckers as cavity trees. b Use versus abundance comparisons, Bailey 95% confidence intervals.

Pwp 2001 04 rpt phdthesis pileatedwoodpeckerhabitatecologyinabfoothills  

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

Read more
Read more
Similar to
Popular now
Just for you