Download or read book Insectes et maladies des arbres Qu bec 1993 written by and published by . This book was released on 1994 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce rapport présente le bilan des principaux problèmes entomologiques et pathologiques qui ont affecté la forêt québécoise pendant l'année et donne un aperçu des prévisions du comportement des principaux ravageurs pour l'avenir.
Download or read book Insectes et maladies des arbres au Canada 1993 written by and published by . This book was released on 1995 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le Relevé des insectes et des maladies des arbres (RIMA) constitue un programme national dans le cadre duquel sont exercées diverses activités par 6 centres régionaux et par un groupe de travail qui, sous la direction des centres et des instituts du Service canadien des forêts, est chargé de mettre au point des technologies destinées au RIMA. Ce document fournit des informations détaillées sur les principaux insectes et maladies affectant les arbres pour chacune des régions canadiennes ainsi qu'un résumé de la surveillance de la santé des forêts, et des descriptions des relevés spéciaux (ravageurs, syndromes), et autres.
Download or read book Forest Insect and Disease Conditions in Canada written by and published by . This book was released on 1995 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Relev des Insectes et des Maladies des Arbres Au Qu bec written by and published by . This book was released on 1993-01-01 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Information Report written by and published by . This book was released on 1985 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Insect and Disease Survey written by J. Peter Hall and published by Hull, Quebec : Canadian Forest Service, Science and Sustainable Development Directorate. This book was released on 1993 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce document présente des renseignements sur les effets des facteurs naturels et anthropiques sur l'intégrité des écosystèmes forestiers du Canada. Plus particulièrement, on y offre un relevé des insectes et des maladies des arbres pour la période allant de 1993 à 1998.
Download or read book Historical Patterns of Spruce Budworm Defoliation and Bark Beetle Outbreaks in North American Conifer Forests written by David W. Williams and published by . This book was released on 2003 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: This atlas presents maps of historical defoliation by the eastern and western spruce budworms and historical outbreaks of the mountain and southern pine beetles during the past half century. The maps encompass various regions of the conterminous United States and eastern Canada. This publication also serves as documentation for an extended set of digital maps, which are available on our website. The digital maps are useful for investigating spatial dynamics of insect populations and for providing pest disturbance inputs to spatially explicit forest simulation models.
Download or read book Microlog Canadian Research Index written by and published by . This book was released on 1994 with total page 1292 pages. Available in PDF, EPUB and Kindle. Book excerpt: An indexing, abstracting and document delivery service that covers current Canadian report literature of reference value from government and institutional sources.
Download or read book Principaux insectes et maladies des arbres dans les Maritimes la fin juin 1993 written by Service canadien des forêts. Région des Maritimes and published by . This book was released on 1994* with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Relev des insectes et des maladies des arbres dans les Maritimes en 1993 written by Laszlo P. Magasi and published by . This book was released on 1994 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Forest Research written by and published by . This book was released on 2002 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abr g Des Publications written by and published by . This book was released on 1996 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers all publications issued by the regions, institutes and headquarters of Forestry Canada.
Download or read book Quill Quire written by and published by . This book was released on 1994 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multiscale Approach to Assess Forest Vulnerability written by Giovanna Battipaglia and published by Frontiers Media SA. This book was released on 2020-07-14 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Magnesium Deficiency in Forest Ecosystems written by Reinhard F. Hüttl and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: R. F. HUTTL AND W. SCHAAF Brandenburg Technical University Cottbus, Chair of Soil Protection and Recultivation, P.O. Box 10 13 44, 03013 Cottbus, Germany The health status of forest trees and stands is determined by numerous site factors such as chemical, physical, and biological soil factors, water supply, climate, weather conditions, management history as well as atmospheric deposition impacts. In this context, the nutrient supply is an important evaluation parameter. Forest trees well supplied with nutrients are more resistant to stresses that affect the forest ecosystem than other trees. This is true for both biotic and abiotic influences. Therefore the investigation of the so-called 'new type forest damage' was aimed at the exact determination of the health status of damaged trees. When considering the complete forest ecosystem, health (=vitality) means the sustainable ability to withstand negative environmental influences and still remain stable and productive. From this viewpoint, an optimal nutritional status is a prerequisite for an optimal health status. The term 'new type forest damage' comprises a number of damage symptoms which have been observed in various tree species on very different sites since the mid-1970s, particularly in Europe and North America. However, they occurred much more intensively in the 1980s. Generally, this forest damage was thought to be related to negative impacts of air pollutants.
Download or read book The Breeding Birds of Qu bec written by Association québécoise des groupes d'ornithologues and published by L'Association québecoise des groupes d'ornithologes. This book was released on 1996 with total page 1328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
