Last edited by Nigami
Saturday, May 2, 2020 | History

4 edition of The western spruce budworm dynamics model found in the catalog.

The western spruce budworm dynamics model

version 3.1 update and notes on behavior

by Nicholas L. Crookston

  • 176 Want to read
  • 34 Currently reading

Published by U.S. Dept. of Agriculture, Forest Service, Intermountain Research Station in Ogden, Utah .
Written in English

    Subjects:
  • Western spruce budworm -- Computer simulation

  • Edition Notes

    StatementNicholas L. Crookston.
    SeriesGeneral technical report INT -- 283.
    ContributionsIntermountain Research Station (Ogden, Utah)
    The Physical Object
    Pagination25 p. :
    Number of Pages25
    ID Numbers
    Open LibraryOL17748618M
    OCLC/WorldCa25489083


Share this book
You might also like
Congress, we the people

Congress, we the people

Banking law

Banking law

Marine archaeology & nautical technology

Marine archaeology & nautical technology

Catalog of Marine Prints and Paintings, Set

Catalog of Marine Prints and Paintings, Set

The African Experience

The African Experience

Passbooks for career opportunities

Passbooks for career opportunities

Nothing Ever Burns Down by Itself

Nothing Ever Burns Down by Itself

Ontario Land Development

Ontario Land Development

Calendar of the close rolls preserved in the Public Record Office

Calendar of the close rolls preserved in the Public Record Office

Mathematics Frame Work

Mathematics Frame Work

Sigma library of FT-IR spectra

Sigma library of FT-IR spectra

Agricultural commodities.

Agricultural commodities.

environmental challenge

environmental challenge

Faithful to each other forever

Faithful to each other forever

Domestic appliances in Spain.

Domestic appliances in Spain.

Louisa County, Virginia

Louisa County, Virginia

The western spruce budworm dynamics model by Nicholas L. Crookston Download PDF EPUB FB2

Get this from a library. The western spruce budworm dynamics model: version update and notes on behavior. [Nicholas L Crookston; Intermountain Research Station (Ogden, Utah)].

Additional Physical Format: Online version: Western spruce budworm model. [Portland Or.]: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research.

Summary The Budworm Model simulates the population dynamics of the western spruce budworm (Choristoneura occidentalis Freeman) to predict defoliation caused by budworms. Western Spruce Budworm.

Western spruce budworm is the most widely distributed forest defoliator in western North America. Budworms have a one-year life cycle and are actually a small moth at full maturity.

Here in the West, there can be severe infestations in healthy Douglas-fir, white fir and spruce. The ODE model developed in Ludwig et al. () for the dynamics of the budworm– forest interaction is a three-variable system based upon the dynamics of the budworm population size and the.

Dynamics and Management of Rising Outbreak Spruce Budworm Populations Article (PDF Available) in Forests 10(9) September with Reads How we measure 'reads'.

Budworm outbreaks may be sustained for 25 years or more. Host trees: Primarily Douglas-fir, with other tree species such as the true firs, larch and to a lesser degree, spruce, also impacted by the western spruce budworm.

Description and life cycle: The western spruce budworm. Western spruce budworm (WSBW) is a common defoliating insect that has caused extensive damage and mortality to a number of tree species across the western Author: Bingbing Xu, Jeffrey A. Hicke, John T. Abatzoglou. Top photo: Western spruce budworm defoliated branches of a Douglas-fir in Montana.

Bottom image: The Wildland-Urban Interface Fire Dynamics Simulator is used to model western spruce budworm-induced foliage reduction. This image shows a defoliated. The spruce budworm is a normal part of forest ecosystems in Canada.

However a cyclical surge in population typically occurs every years which can lead to. Inwestern spruce budworm activity was highly apparent in Douglas-fir and grand fir forests of the eastern slope of the Cascade Mountains north of I and across parts of northeastern Washington.

Many people noticed defoliated .