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Climatic effects on spruce beetle and mountain pine beetle disturbances in western North America

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Title: Climatic effects on spruce beetle and mountain pine beetle disturbances in western North America
Author: Coe, Janelle
Subject Keywords Climate change;mountain pine beetle;natural disturbance;spruce beetle
Issue Date: 2011
Publicly Available in cIRcle 2011-08-02
Series/Report no. University of British Columbia, Forestry Undergraduate Essays/Theses, 2010 winter session, FRST 497
Abstract: Spruce beetle (Dendroctonus rufipennis) and mountain pine beetle (Dendroctonus ponderosae) are both primary bark beetles native to the forests of western North America. Both species have experienced extensive outbreaks in the past two decades, which are partially attributed to climate change. Although both species are affected by climate change, the manner in which they are affected differs. Mountain pine beetles disturbance levels are predominately influenced by climate change through range expansion as more pine-dominated areas become climatically suitable for their life cycles. Spruce beetles however are already found throughout the entire range of their host spruce trees and are affected through a change in development time rather than range expansion. In either case, regardless of the mechanism, climate change provides opportunities for increased disturbance levels from both spruce beetles and mountain pine beetles in western forests, creating future forest management challenges.
Affiliation: Forest Resources Management, Dept of
URI: http://hdl.handle.net/2429/36456
Peer Review Status: Unreviewed
Scholarly Level: Undergraduate

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