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UBC Theses and Dissertations
Characteristics of trees infested by Douglas-fir beetles in Kootenay Lake Forest District Kano, Tamaki
Abstract
Some characteristics of Douglas-fir trees and their immediate surroundings were assessed for their association with Douglas-fir beetle infestation in Kootenay Lake Forest District. Examination of trees in plots paired within 50 m revealed that a small crown and clumping of Douglas-fir trees were related to infestation for trees larger than 40 cm diameter at breast height (1.3 m). Relative probability of infestation between trees in plots within 50 meters can be calculated using live crown ratio and basal area occupied by Douglas-fir trees in a 0.01-ha range. Live crown ratio and average diameter of trees within a 0.01-ha plot around the tree were important. Carbon isotope ratio of wood samples from a 5-year period prior to infestation was significantly related to infestation status, possibly indicating moisture stress in infested trees previous to infestation.
Item Metadata
Title |
Characteristics of trees infested by Douglas-fir beetles in Kootenay Lake Forest District
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
2006
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Description |
Some characteristics of Douglas-fir trees and their immediate surroundings were assessed for
their association with Douglas-fir beetle infestation in Kootenay Lake Forest District. Examination
of trees in plots paired within 50 m revealed that a small crown and clumping of Douglas-fir trees
were related to infestation for trees larger than 40 cm diameter at breast height (1.3 m). Relative
probability of infestation between trees in plots within 50 meters can be calculated using live
crown ratio and basal area occupied by Douglas-fir trees in a 0.01-ha range. Live crown ratio
and average diameter of trees within a 0.01-ha plot around the tree were important. Carbon
isotope ratio of wood samples from a 5-year period prior to infestation was significantly related to
infestation status, possibly indicating moisture stress in infested trees previous to infestation.
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Genre | |
Type | |
Language |
eng
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Date Available |
2010-01-06
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0074981
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
2006-05
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.