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  1. Nest trees of northern flying squirrels in the Sierra Nevada

    We examined the nest-tree preferences of northern flying squirrels (Glaucomys sabrinus) in an old-growth, mixed-conifer and red fir (Abies magnifica) forest of the southern Sierra Nevada of California. We tracked 27 individuals to 122 nest trees during 3 summers. Flying squirrels selected nest trees that were larger in diameter and...

    Author(s):
    Marc D. Meyer; Douglas A. Kelt; Malcolm P. North
    Year:
    2005
    Keywords:
    Glaucomys sabrinus, nest trees, radiotelemetry, riparian habitat, Sierra Nevada, snags
    Source:
    Journal of Mammalogy, Vol. 86(2): 275-280

  2. Effects of diterpene acids on components of a conifer bark beetle–fungal interaction: tolerance by Ips pini and sensitivity by its associate Ophiostoma ips

    Conifer resin and phloem tissue contain several phytochemical groups,composed primarily of monoterpenes,diterpene acids, and stilbene phenolics. The effects of monoterpenes and phenolics on stem-colonizing bark beetles and their associated microorganisms have been studied to some extent, but the roles of diterpene acids are largely unknown. Diterpene acids are known to...

    Author(s):
    Brian J. Kopper; Barbara L. Illman; Philip J. Kersten; Kier D. Klepzig; Kenneth F. Raffa
    Year:
    2005
    Keywords:
    host defense, conifer, diterpene acids, bark beetles, Ips Ophiostoma
    Source:
    Environ. Entomology 34(2): 486-493 (2005)

  3. Effects of diterpene acids on components of a conifer bark beetle-fungal interaction : tolerance by Ips pini and sensitivity by its associate Ophiostoma ips

    Conifer resin and phloem tissue contain several phytochemical groups, composed primarily of monoterpenes, diterpene acids, and stilbene phenolics. The effects of monoterpenes and phenolics on stem-colonizing bark beetles and their associated microorganisms have been studied to some extent, but the roles of diterpene acids are largely unknown. Diterpene acids are known...

    Author(s):
    Brian J. Kopper; Barbara L. Illman; Philip J. Kersten; Kier D. Klepzig; Kenneth F. Raffa
    Year:
    2005
    Keywords:
    Host defense, conifer, diterpene acids, bark beetles, Ips, Ophiostoma
    Source:
    Environmental entomology. Vol. 34, no. 2 (2005): pages 486-493.

  4. Influence of fire and El Niño on tree recruitment by Sierran mixed conifer

    The influence of fire and climate events on age structure of different species was examined in old-growth mixed conifer in the southern Sierra Nevada. Within a 48-ha stem-mapped sample area, after a mechanical thinning, all stumps were examined for fire scars and 526 stumps were cut to ground level and aged. Before 1865, which was the last widespread fire event, the...

    Author(s):
    Malcolm North; Matthew Hurteau; Robert Fiegener; Michael Barbour
    Year:
    2005
    Keywords:
    Abies concolor, Abies magnifica, Calocedrus decurrens, climate, microclimate, old-growth, Palmer Drought Severity Index, Pinus jeffreyi, Pinus lambertiana, Sierra Nevada, Teakettle Experimental Forest
    Source:
    Forest Science, Vol. 51(3): 187-197

  5. Dynamics of Municipal Wastewater Renovation in a Young Conifer-Hardwood Plantation in Michigan

    Since the pioneering work of investigators at The Pennsylvania State University who introduced the "living filter" concept in the 196Os, numeious studies have examined the impact of wastewater irrigation upon forest communities. Some industries had undertaken wastewater recycling measures earlier (Rudolph, 1957; Little et al., 1959). but these met with...

    Author(s):
    Dale G. Brockway; Gary Schneider; Donald P. White
    Year:
    1979
    Keywords:
    Source:
    Ch.7 In: Utilization of Municipal Sewage Effluent and Sludge on Forest and Disturbed Land, William E. Sopper and Sonja N. Kerr Eds.

  6. Patterns of mortality in an old-growth mixed-conifer forest of the Southern Sierra Nevada, California

    Mortality patterns in an old-growth, mixed-conifer forest, in the absence of wildfire, were investigated at the Teakettle Experimental Forest from 2000 to 2002. We tested the hypothesis that after a century of fire suppression, pathogen- and insect-associated mortality (between episodic droughts) would be significantly greater on ingrowth trees (i.e., smaller-diameter...

    Author(s):
    Thomas F. Smith; David M. Rizzo; Malcolm North
    Year:
    2005
    Keywords:
    canopy gaps, density-dependent mortality, dwarf mistletoe, bark beetles, root rot
    Source:
    Forest Science, Vol. 51(3): 266-275
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