2 edition of Incidence of insects, diseases, and other damaging agents in Oregon forests found in the catalog.
Incidence of insects, diseases, and other damaging agents in Oregon forests
Paul A. Dunham
by U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station in Portland, OR
Written in English
This report uses data from a network of forest inventory plots sampled at two points in time, annual aerial insect and disease surveys, and specialized pest damage surveys to quantify the incidence and impact of insects, diseases, and other damaging agents on Oregon"s forests. The number and volume of trees damaged or killed by various agents is summarized. Differences in the frequency and severity of damaging agents between various ownership categories and geographic regions of the state are investigated.
|Series||Resource bulletin PNW -- RB-257, Resource bulletin PNW -- 257|
|Contributions||Pacific Northwest Research Station (Portland, Or.)|
|LC Classifications||SD144.O7 D86 2008|
|The Physical Object|
|Pagination||89 p. :|
|Number of Pages||89|
|LC Control Number||2009358595|
Fires, insects, and diseases are still the predominate causes of mortality. Air quality and biodiversity are key elements that are being evaluated and analyzed with the forest health data. P. Incidence of insects, diseases, and other damaging agents in Oregon forests. Res. Bull. PNW-RB Portland, OR: U.S. Department of Agriculture. Introduction. The most serious and urgent near‐term ecological threat for many United States forests and urban and suburban trees is the recurrent introduction of insects and pathogens from other continents (Liebhold et al. , Lovett et al. , Moser et al. ).Invasive forests pests are an undesirable consequence of international trade and travel, and while they are not a new.
Forest Insects and Diseases. ISSN: OCLC Number: Description: volumes: illustrations ; 27 cm: Other Titles: Forest insect and disease conditions in the Pacific Northwest Forest insect and disease conditions, Pacific Northwest region Forest insect and disease conditions and forest pest management activities, Pacific Northwest. disease. Although root disease occurred more frequently than bear damage, it did not affect as many trees or acres as bear damage. Although bears damaged more trees than any other agent in the survey area, root disease killed more trees than bears. The polygons mapped in the survey represented , dead or damaged trees, , of.
Forestry - Forestry - Insect and disease control: Enormous numbers and varieties of insects, fungi, bacteria, and viruses occur in forests and are adapted to live on or around trees. Many of these are beneficial, and even the destructive ones are usually held in check by their natural enemies or an unfavourable environment. The normal population levels of pest organisms result in limited. Report on the Health of Colorado’s Forests. New this year, the Report on the Health of Colorado’s Forests ( MB PDF) digs into the four areas of our state with updates on insect and disease activity as well as an overview of the most common forest afflictions throughout the state.
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Surveys to quantify the incidence and impact of insects, diseases, and other damag-ing agents on Oregon’s forests. The number and volume of trees damaged Incidence of insects killed by various agents is summarized.
Differences in the frequency and severity of damaging agents between various ownership categories and geographic regions of the state are investigated. Keywords: Forest surveys, forest inventory, forest insects, forest diseases, by: 1.
Incidence of insects, diseases, and other damaging agents in Oregon forests. [Paul A Dunham; Pacific Northwest Research Station (Portland, Or.)] -- This report uses data from a network of forest inventory plots sampled at two points in time, annual aerial insect and disease surveys, and specialized pest damage surveys to quantify the incidence.
Entire forests in Oregon are affected by species such as the mountain pine beetle. Other types of insects that can cause major damage to forests include wood-boring beetles, which typically bore directly into the sapwood, and caterpillars and other damaging agents in Oregon forests book voraciously feed on foliage.
Native Forest Insects and Diseases. Native Forest Insects. Tens of thousands of species of insects are found in our forests and rangelands, and many play an important role in pollinating plants, recycling nutrients, decomposing vegetation, and providing food for wildlife.
phytoplasmas, virus, viroids, and higher parasitic plants can serve. This report on the major insect and disease conditions of the Nation’s forests represents the 65th annual report prepared by the U.S. Department of Agriculture, Forest Service.
The report. focuses on 19 major insects and diseases that annually cause defoliation and mortality in U.S. forests. disease also are more susceptible to pests, especially bark beetles.
On the other hand, root diseases are a component of the forest ecosystem and play an important role in creating wildlife habitat and in cycling nutrients. This publication is for woodland owners and managers interested in identifying and managing root diseases in trees or forests.
most important causative agents are viruses, bacteria, fungi, oomycetes, and insect herbivores. Research on tree pests and diseases has had a historical focus on trees of direct economic impor.
Eugene, Oregon, USA. Native and non-native pathogens, insects and animals continue to negatively impact forest ecosystems and plantations worldwide. Climate change will alter host-damage agent relationships and may increase detrimental impacts from many biotic agents.
Genetic resistance within tree species is a key element to maintaining forest. Oregon Insects ( Found) Listing of bugs and other insects that can be found in Oregon. Note: Please note that insects do not adhere to man-drawn borders on a map and as such they may be found beyond their listed 'reach' showcased on our website.
Insects are typically drawn to a given area by available food supply, weather, environmental. exhaustive reference guide for all known damaging agents in B.C., but to highlight those that are common and important to forest management (e.g., those agents that cause substantial damage, are frequently treated or managed, and/or are very common).
The guide’s main function is as a reference for field operations staff who conduct silviculture. The report describes the extent and nature of insect- and disease-caused damage of national significance in The first section of this report highlights emerging insect and disease issues.
This is a new section added in Regional and temporal trends in selected insect and disease conditions are highlighted in the second section of the. pests (deer, elk, gophers, bear, etc.) are not discussed in this book. Nor do we discuss invasive insects and diseases currently threatening Oregon but not yet established, such as the gypsy moth.
For more information on these topics, see Chapter 1. For details. The vast majority of insect damage to trees is caused by 22 common insect pests. These insects cause enormous economic damage by destroying landscape trees that must be removed and replaced, and by destroying trees that are essential to the North American lumber industry.
Diseases and insects, particularly those that are non-native and invasive, arguably pose the most destructive threat to North American forests. Currently, both exotic and native insects and diseases are producing extensive ecological damage and economic impacts. As part of an effort to identify United States tree species and forests most vulnerable to these epidemics, we compiled a list of the.
A description for each insect and disease includes hosts, damage, symptoms, biology, and effects or impacts. A list of references is also provided.
Please refer to your local Forest Service, Forest Health zone office, State Forest Health Specialist, Cooperative Extension Agent, or State Forester for information concerning specific control measures.
Native tree diseases are a particularly common menace to Oregon’s western forests. Among the most prevalent diseases in Oregon are Swiss needle cast and laminated root rot. Swiss needle cast is a foliage disease that affects Douglas-fir trees.
It causes trees to prematurely shed their needles. Oregon is a great place to grow trees, especially the sturdy conifers we use to build our homes and office building Forest Threats: Forest Fire Fire can be a particularly destructive threat to Oregon’s forests, but active forest management can help lessen the.
Introduced insects and diseases occur in forests and cities throughout the United States, and the problem is particularly severe in the Northeast and Upper Midwest. Nonnative forest pests are the only disturbance agent that has effectively eliminated entire tree species or genera from United States forests within decades.
Damage assessment and insect and disease incidence on private forest land in northern Idaho. Ogden, UT ( 25th, Ogden ): U.S. Dept. of Agriculture, Forest Service, Intermountain Research Station,  (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors.
Source: Forests; DOI: /f; Abstract. Diseases and insects, particularly those that are non-native and invasive, arguably pose the most destructive threat to North American forests.
Currently, both exotic and native insects and diseases are producing extensive ecological damage. Discusses options for managing major insect pests and diseases of conifers in Oregon forests: bark beetles, wood borers, and ambrosia beetles; defoliators; aphids, adelgids, and scale insects; terminal and branch insects and pitch.Identifying and Managing Christmas Tree Diseases, Pests, and Other Problems (Identificación y Manejo de Enfermedades, Plagas y Otros Problemas en Árboles de Navidad) Published April EM Oregon is a great place to grow trees, especially the sturdy conifers we use to build our homes and office buildings.
But our forests are vulnerable to multiple threats. Join Mike Cloughesy, director of forestry at the Oregon Forest Resources Institute, to explore some of the threats facing Oregon’s forests, and see how active forest management is helping combat these threats.