by U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station in Berkeley, Calif .
Written in English
|Statement||George T. Ferrell.|
|Series||General technical report PSW -- 39.|
|Contributions||Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)|
|The Physical Object|
|Pagination||29 p. :|
|Number of Pages||29|
INTRODUCTION Risk-rating systems developed previously for California red fir (Abies magnifica A. Muff.) and white fir (A. concolor [Gord.& Glend.] Lindl.) predict the probability that a tree will die within 5 years (Ferrell ). These systems apply to mature trees at least 10 inches ( cm). Risk-rating systems for mature red fir and white fir in northern California - Free download as PDF File .pdf), Text File .txt) or read online for free. Abstract. The fir engraver beetle, Scolytus ventralis LeConte (Coleoptera: Scolytidae), was first described from two specimens collected at Vancouver, Washington, but the species has been subsequently recorded throughout the western United States and British Columbia. 20,55 Its primary hosts are true firs, Abies; specifically white fir (A. concolor), California red fir (A. Cited by: Aerial assessment of red spruce & balsam fir condition in the Adirondack region of New York, the Green Mountains of Vermont, the White Mountains of New Hampshire, and the mountains of western Maine, / (Durham, N.H.: Forest Health Protection, U.S. Dept. of Agriculture, Forest Service, [?]), by Margaret M. Miller-Weeks, United.
Ferrell, G. T., , Risk-rating systems for mature red fir and white fir in Northern California, U.S. Forest Service, General Technical Report PSW, 19 pp. (penalty-point system) Google Scholar Ferrell, G. T., and Hall, R. C., , Weather and tree growth associated with white fir mortality caused by fir engraver and roundheaded fir borer Cited by: 1. Ferrell GT () Risk-rating systems for mature red and white fir in northern California. General Technical Report PSW-GTR Berkeley, CA: USDA Forest Service Pacific Southwest. Mortality equations for individual trees in the mixed conifer zone of southwest Oregon. California black oak Mechanical thinning and the application of prescribed fire are commonly used to restore fire-adapted forest ecosystems in the Western United States. During a year period, we monitored the effects of fuel-reduction and forest-restoration treatments on levels of tree mortality in an interior ponderosa pine, Pinus ponderosa Dougl. ex Laws., forest in by:
Large Risk Alternative Rating Option, Retrospective Rating Plan Manual Effective January 1, Created Date: 6/27/ AM File Size: KB. This banner text can have markup.. web; books; video; audio; software; images; Toggle navigation. On Decem , the end of the fiscal year, California Microtech Corporation completed the sale of its. semiconductor business for $10 million. The business segment qualifies as a component of the entity according. to GAAP. The book value of the assets of the segment was $8 million. The loss from operations of the segment. Extensive bark beetle outbreaks have recently occurred in western North American forests, resulting in overstory tree mortality across millions of hectares. Annual aerial surveys are currently used to operationally monitor bark beetle induced tree mortality, though this method is subjective and can exclude some forest areas. Daily Moderate Resolution Imaging Spectroradiometer Author: Spruce, Hicke, Hargrove, Nancy Grulke, Meddens.