Download or read book An Analytical Method to Assess Spruce Beetle Impacts on White Spruce Resources Kenai Peninsula Alaska written by Willem W. S. Van Hees and published by . This book was released on 1992 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Analytical Method to Assess Spruce Beetle Impacts on White Spruce Resources Kenai Peninsula Alaska written by Willem W. S. Van Hees and published by . This book was released on 1992 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Analysis Method of Assess Spruce Beetle Impacts on White Spruce Resources Kenai Peninsula Alaska written by Willem W. S. VanHees and published by . This book was released on 1992 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Analytical Method to Assess Spruce Beetle Impacts on with Spruce Resources Kenai Peninsula Alaska written by W. W. S. van Hees and published by . This book was released on 1992 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Analytical Method to Assess Spruce Beetle Impacts on White Spruce Resources Classic Reprint written by Willem W. S. van Hees and published by Forgotten Books. This book was released on 2018-01-08 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from An Analytical Method to Assess Spruce Beetle Impacts on White Spruce Resources Uninfested - No live or dead tree on the plot showed any indication of beetle attack or injury. Potential infestation - Plots on which only live trees showed signs of beetle attack, plus plots on which live trees were attacked and trees dead more than 5 years showed signs of attack. This latter group of plots represents areas where there was potential reinfestation of an area attacked more than 5 years before the date of inventory. Ongoing infestation - Plots on which live trees and trees dead less than 5 years showed signs of beetle attack. Past infestation - Plots on which only dead trees showed signs of beetle attack. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Changes in Downed and Dead Woody Material Following a Spruce Beetle Outbreak on the Kenai Peninsula Alaska written by Bethany Schulz and published by . This book was released on 2003 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The forests of the Kenai Peninsula, Alaska, underwent a major spruce beetle(Dendroctonus rufipennis (Kirby)) outbreak in the 1990s. A repeated inventory of forest resources was designed to assess the effects of the resulting widespread mortality of spruce trees, the dominant component of the Kenai forests. Downed woody materials, fuel heights, and moss depths were recorded during each inventory. Changes in downed and dead woody materials are summarized by forest type and harvest activity, compiled by fuel timelag classes. Fuel heights, fine fuels, and sound large fuels increased between 1987 and 2000. Moss depths and rotten large fuels decreased. Harvested white spruce (Picea glauca (Moench) Voss) showed the greatest increase of fine fuel classes.

Download or read book Spruce Reproduction Dynamics on Alaska s Kenai Peninsula 1987 2000 written by Willem W. S. Van Hees and published by . This book was released on 2005 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past 30 years, spruce forests of Alaskas Kenai Peninsula have undergone dramatic changes resulting from widespread spruce bark beetle(Dendroctonus rufipennis (Kirby)) infestation. In 1987 and again in 2000, the Pacific Northwest Research Stations Forest Inventory and Analysis Program conducted initial and remeasurement inventories to assess broad-scale impacts of this infestation. Changes in regeneration of Sitka spruce(Picea sitchensis (Bong.) Carr.) and white spruce (Picea glauca (Moench) Voss) are examined by using data collected on 130 plots. Regeneration of Sitka and white spruce in terms of mean number of seedlings per plot is not significantly different from the 1987 findings. The number of plots where seedling stocking remained at previous levels or increased, slightly exceeded the number of locations where seedling stocking declined. Almost half the plots (49 percent) had decreased numbers of seedlings, and almost 72 percent of the plots fell in the less-than-fully-stocked category in both inventories. Also, the distribution of the seedlings over the plot was not uniform. No plots had seedlings on all plot cluster sample points in either inventory.

Download or read book Research Paper PNW written by and published by . This book was released on 1978 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Health Restoration in South central Alaska written by and published by . This book was released on 2001 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Winter Waterfront Year round Use in Metropolitan Toronto written by Xenia Klinger and published by . This book was released on 1991 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1992 with total page 1232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mortality of White Spruce During a Spruce Beetle Outbreak on the Kenai Peninsula in Alaska written by R. A. Werner and published by . This book was released on 1983 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Catalog of Scolytidae and Platypodidae Coleoptera written by Donald E. Bright and published by NRC Research Press. This book was released on 1997 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication supplements Wood & Bright's 1992 catalogue of the world's Scolytidae and Platypodidae (bark beetles), updating the taxonomy of these two families to nearly the end of 1995 and including all known literature references to the end of 1994 (plus references to articles missed in the earlier bibliography). References which provide new information on taxonomy, host plants, or biology of a species are also included. The format of the supplement closely follows that of the 1992 catalogue. Each genus & species is listed with its page number from that catalogue; additional information on figures, distribution, hosts, and references to other subject areas are given. The publication also includes lists of host plants, arranged by scientific name, and the beetles attacking them.

Download or read book Results of a Pilot Study to Evaluate Spruce Bark Beetle induced Tree Mortality on the Kenai Peninsula 1997 written by Vernon J. LaBau and published by . This book was released on 1998 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Technical Report PSW written by and published by . This book was released on 1978 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bark Beetles written by Fernando E. Vega and published by Academic Press. This book was released on 2014-12-29 with total page 641 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bark Beetles: Biology and Ecology of Native and Invasive Species provides a thorough discussion of these economically important pests of coniferous and broadleaf trees and their importance in agriculture. It is the first book in the market solely dedicated to this important group of insects, and contains 15 chapters on natural history and ecology, morphology, taxonomy and phylogenetics, evolution and diversity, population dynamics, resistance, symbiotic associations, natural enemies, climate change, management strategies, economics, and politics, with some chapters exclusively devoted to some of the most economically important bark beetle genera, including Dendroctonus, Ips, Tomicus, Hypothenemus, and Scolytus. This text is ideal for entomology and forestry courses, and is aimed at scientists, faculty members, forest managers, practitioners of biological control of insect pests, mycologists interested in bark beetle-fungal associations, and students in the disciplines of entomology, ecology, and forestry. Provides the only synthesis of the literature on bark beetles Features chapters exclusively devoted to some of the most economically important bark beetle genera, such as Dendroctonus, Ips, Tomicus, Hypothenemus, and Scolytus Includes copious color illustrations and photographs that further enhance the content

Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1994 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt: