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A Case Study Of A Douglas Fir Tussock Moth Outbreak And Stand Conditions 10 Years Later
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Book Synopsis A Case Study of a Douglas-fir Tussock Moth Outbreak and Stand Conditions 10 Years Later by : Boyd E. Wickman
Download or read book A Case Study of a Douglas-fir Tussock Moth Outbreak and Stand Conditions 10 Years Later written by Boyd E. Wickman and published by . This book was released on 1978 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tree damage occurring immediately after an outbreak of Douglas-fir tussock moth, Orgyia Pseudotsugata McD., and stand conditions 10 years later are described. Because of increased radial growth and ingrowth in the 10-year postoutbreak period, good evidence indicates that tree damage caused by the tussock moth may not be as severe in the overall stand dynamics as previously pictured. The insect probably plays a key role as a phytophagous regulator of primary production in some second-growth white fir stands in California and elsewhere.
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1979 with total page 1282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Natural Regeneration 10 Years After a Douglas-fir Tussock Moth Outbreak in Northeastern Oregon by : Boyd E. Wickman
Download or read book Natural Regeneration 10 Years After a Douglas-fir Tussock Moth Outbreak in Northeastern Oregon written by Boyd E. Wickman and published by . This book was released on 1986 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Pacific Northwest Forest and Range Experiment Station (Portland, Or.). Publisher : ISBN 13 : Total Pages :36 pages Book Rating :4.:/5 (319 download)
Book Synopsis Annotated List of Publications of the Pacific Northwest Forest and Range Experiment Station by : Pacific Northwest Forest and Range Experiment Station (Portland, Or.).
Download or read book Annotated List of Publications of the Pacific Northwest Forest and Range Experiment Station written by Pacific Northwest Forest and Range Experiment Station (Portland, Or.). and published by . This book was released on 1979 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalogue, United States Public Documents by :
Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1979 with total page 1136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by : United States. Superintendent of Documents
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1968 with total page 1122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agriculture Handbook written by and published by . This book was released on 1949 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Set includes revised editions of some issues.
Book Synopsis Using Pheromone Traps to Detect and Evaluate Populations of the Gypsy Moth by : Boyd E. Wickman
Download or read book Using Pheromone Traps to Detect and Evaluate Populations of the Gypsy Moth written by Boyd E. Wickman and published by . This book was released on 1978 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hazard-rating Systems in Forest Insect Pest Management by :
Download or read book Hazard-rating Systems in Forest Insect Pest Management written by and published by . This book was released on 1981 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report PNW. written by and published by . This book was released on 1978 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Note PNW written by and published by . This book was released on 1988 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Forest Entomology by : Robert N. Coulson
Download or read book Forest Entomology written by Robert N. Coulson and published by John Wiley & Sons. This book was released on 1984-05-14 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text considers forest insects occurring in forest ecosystems, specialized forestry settings, and urban forests, with an approach and coverage that make it suitable for use in both undergraduate and graduate courses in forest entomology and forest protection. Early chapters introduce entomology, middle chapters provide the first comprehensive treatment of the principles of Integrated Pest Management (IPM) of forest insects, and later chapters discuss the pest insects according to their feeding group.
Book Synopsis Documentation of the Douglas-fir Tussock Moth Outbreak-population Model by : J. J. Colbert
Download or read book Documentation of the Douglas-fir Tussock Moth Outbreak-population Model written by J. J. Colbert and published by . This book was released on 1979 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamics of Forest Insect Populations by : Alan A. Berryman
Download or read book Dynamics of Forest Insect Populations written by Alan A. Berryman and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Insects multiply. Destruction reigns. There is dismay, followed by outcry, and demands to Authority. Authority remembers its experts or appoints some: they ought to know. The experts advise a Cure. The Cure can be almost anything: holy water from Mecca, a Government Commis sion, a culture of bacteria, poison, prayers denunciatory or tactful, a new god, a trap, a Pied Piper. The Cures have only one thing in common: with a little patience they always work. They have never been known entirely to fail. Likewise they have never been known to prevent the next outbreak. For the cycle of abundance and scarcity has a rhythm of its own, and the Cures are applied just when the plague of insects is going to abate through its own loss of momentum. -Abridged, with insects in place of voles, from C. Elton, 1924, Voles, Mice and Lemmings, with permission of Oxford University Press This book is an enquiry into the "natural rhythms" of insect abundance in forested ecosystems and into the forces that give rise to these rhythms. Forests form unique environ ments for such studies because one can find them growing under relatively natural (pri meval) conditions as well as under the domination of human actions. Also, the slow growth and turnover rates of forested ecosystems enable us to investigate insect popula tion dynamics in a plant environment that remains relatively constant or changes only slowly, this in contrast to agricultural systems, where change is often drastic and frequent.
Author :Fritz Hans Schweingruber Publisher :Springer Science & Business Media ISBN 13 :9400912730 Total Pages :290 pages Book Rating :4.4/5 (9 download)
Book Synopsis Tree Rings by : Fritz Hans Schweingruber
Download or read book Tree Rings written by Fritz Hans Schweingruber and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: At a meeting of dendrochronologists an American colleague described the effects of volcanic eruptions on annual ring formation in bristlecone pines. I knew very little about either volcanoes or American pines! At the same meeting European scientists spoke on the dendrochronological dating of lakeshore settlements and the effects of larch bud moth attack on trees in the Alps. It is possible that American participants were not in a position to fully appreciate these papers either. In other words, dendrochronology is an extremely interdisciplinary science; its facets range from modern statistics on wood anatomy to the history of art. It is difficult even for dendrochronol ogists to keep in touch with the whole spectrum, and even more difficult for the layman to obtain an overall view of the many methods and fields of application. In recent times specialisation has begun to hinder communication be tween the various sectors. Archaeologists, for instance, set up their own dendrochronological laboratories and construct independent chronologies to serve their particular interests. The scientific institutions which previously carried out such work are now turning more and more to strongly statistically or biologically-oriented questions. The full wealth of information contained in tree rings, however, will be revealed only when dendrochronologists make a concerted effort to relate the findings of the different fields. In spite of inevitable specialisation, it is necessary that the expert concern himself with the work of his colleagues.
Book Synopsis Silviculture of Mixed Conifer Forests in Eastern Oregon and Washington by : Kenneth W. Seidel
Download or read book Silviculture of Mixed Conifer Forests in Eastern Oregon and Washington written by Kenneth W. Seidel and published by . This book was released on 1981 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The silviculture of mixed conifer forests in eastern Oregon and Washington is described. Topics discussed include ecological setting, damaging agents, silviculture, and management. The relevant literature is presented, along with unpublished research, experience, and observations. Research needs are also proposed.
Download or read book Research Paper PNW. written by and published by . This book was released on 1978 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt:
