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Creator:: Ott, Daniel S.
Abstract:: Blue spruce (Picea pungens) and Engelmann spruce (Picea engelmannii) experience varying levels of spruce beetle (Dendroctonus rufipennis (Kirby)) colonization, yet the underlying differences and mechanisms resulting in lower colonization for blue spruce are not known. Both spruce species have important roles in subalpine ecosystems where examining changes in mortality, distribution,...
Resource Type:: Dissertation
Full Text:: . Carroll, M. Hansen, J. Hicke, and L. Joyce. 2009. Bark beetle outbreaks in western North America

Creator:: Foote, Gabriel G.
Abstract:: This work combines both applied and basic research regarding previously undescribed relationships between two ecologically and economically important insect groups in coniferous forests, bark beetles (Coleoptera: Curculionidae, Scolytinae) and wild bee (Hymenoptera: Apiformes) communities in Western North America. Across the continent, native bark beetle outbreaks are key drivers of structural...
Resource Type:: Masters Thesis
Full Text:: levels following beetle colonization (Raffa and Smalley 1995; Miller et al. 2005; Zulak and Bohlmann

Creator:: Kohler, Glenn R.
Abstract:: The hemlock woolly adelgid, Adelges tsugae, is causing widespread mortality of eastern hemlock, Tsuga canadensis, in the eastern United States. In the West, A. tsugae causes negligible damage to western hemlock, Tsuga heterophylla. Host tolerance traits and presence of endemic predators may be contributing to the relative tolerance of western...
Resource Type:: Masters Thesis
Full Text:: thank Dan Cress, Jim Hargrove, Jessica Joseph, Joyce Mobley, Dan Moeller, Dave Overhulser, Rick Quam

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