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    Author(s): Barbara Bentz; Elizabeth Campbell; Ken Gibson; Sandra Kegley; Jesse Logan; Diana Six
    Date: 2011
    Source: In: Keane, Robert E.; Tomback, Diana F.; Murray, Michael P.; Smith, Cyndi M., eds. The future of high-elevation, five-needle white pines in Western North America: Proceedings of the High Five Symposium. 28-30 June 2010; Missoula, MT. Proceedings RMRS-P-63. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 78-84.
    Publication Series: Proceedings (P)
    Station: Rocky Mountain Research Station
    PDF: View PDF  (430.87 KB)

    Description

    Across western North America mountain pine beetle, Dendroctonus ponderosae (Coleoptera: Curculionidae, Scolytinae), populations are growing at exponential rates in pine ecosystems that span a wide range of elevations. As temperature increased over the past several decades, the flexible, thermally-regulated life-history strategies of mountain pine beetle have allowed for increased population success in numerous habitats. Of particular concern are the high-elevation five-needle white pines that are currently being infested. In a recent study of high-elevation whitebark pine forests, mountain pine beetles from multiple generations were found killing pines within a single summer. These generations included parent beetles that overwintered and emerged to attack new host trees, adult beetles that developed in a single year (univoltine), and adult beetles that required two years for life-cycle completion (semivoltine).

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    Citation

    Bentz, Barbara; Campbell, Elizabeth; Gibson, Ken; Kegley, Sandra; Logan, Jesse; Six, Diana. 2011. Mountain pine beetle in high-elevation five-needle white pine ecosystems. In: Keane, Robert E.; Tomback, Diana F.; Murray, Michael P.; Smith, Cyndi M., eds. The future of high-elevation, five-needle white pines in Western North America: Proceedings of the High Five Symposium. 28-30 June 2010; Missoula, MT. Proceedings RMRS-P-63. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 78-84.

    Keywords

    high elevation five-needle pines, threats, whitebark, Pinus albicaulis, limber, Pinus flexilis, southwestern white, Pinus strobiformis, foxtail, Pinus balfouriana, Great Basin bristlecone, Pinus longaeva, Rocky Mountain bristlecone pine, Pinus aristata

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https://www.fs.usda.gov/treesearch/pubs/38203