Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Detecting Suboutbreak Populations Of The Douglas Fir Tussock Moth By Sequential Sampling Of Early Larvae In The Lower Tree Crown Classic Reprint
Download Detecting Suboutbreak Populations Of The Douglas Fir Tussock Moth By Sequential Sampling Of Early Larvae In The Lower Tree Crown Classic Reprint full books in PDF, epub, and Kindle. Read online Detecting Suboutbreak Populations Of The Douglas Fir Tussock Moth By Sequential Sampling Of Early Larvae In The Lower Tree Crown Classic Reprint ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Detecting Suboutbreak Populations of the Douglas-fir Tussock Moth by Sequential Sampling of Early Larvae in the Lower Tree Crown by : Richard R. Mason
Download or read book Detecting Suboutbreak Populations of the Douglas-fir Tussock Moth by Sequential Sampling of Early Larvae in the Lower Tree Crown written by Richard R. Mason and published by . This book was released on 1978 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: A sequential sampling plan is described for identifying tussock moth populations which, at a maximum expected rate of increase, could be within 1 year of outbreak status. The plan uses a new technique of sampling early larvae by the nondestructive examination of lower crown foliage. Larvae at inconspicuous low densities are classified into relatively low or high categories by their frequency of occurrence on foliage samples. The sampling plan is applied independently on individual plots to classify the density of each plot. It is an appropriate method for quickly screening suboutbreak populations in ground evaluation surveys.
Book Synopsis Detecting Suboutbreak Populations of the Douglas-Fir Tussock Moth by Sequential Sampling of Early Larvae in the Lower Tree Crown (Classic Reprint) by : Richard R. Mason
Download or read book Detecting Suboutbreak Populations of the Douglas-Fir Tussock Moth by Sequential Sampling of Early Larvae in the Lower Tree Crown (Classic Reprint) written by Richard R. Mason and published by Forgotten Books. This book was released on 2018-03-17 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Detecting Suboutbreak Populations of the Douglas-Fir Tussock Moth by Sequential Sampling of Early Larvae in the Lower Tree Crown Construction of the sequential plan requires selection of risk levels for making incorrect decisions. These are usually referred to as alpha (o), the risk of rejecting a hypothesis when it is true, and beta the risk of accepting a hypothesis when it is false. In this plan both allow able risks were set at which means the maximum chance of mislabeling a population is l in 20. Two parallel decision lines are used for testing the formulated hypoth eses. These are calculated according to the equation for a straight line. 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.
Book Synopsis Detecting Suboutbreak Populations of the Douglas-fir Tussock Moth by Sequential Sampling of Early Larvae in the Lower Tree Crown by : Richard R. Mason
Download or read book Detecting Suboutbreak Populations of the Douglas-fir Tussock Moth by Sequential Sampling of Early Larvae in the Lower Tree Crown written by Richard R. Mason and published by . This book was released on 1978 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Detecting Suboutbreak Populations of the Douglas-fir Tussock Moth by Sequential Sampling of Early Larvae in the Lowe Tree Crown by : R. Mason
Download or read book Detecting Suboutbreak Populations of the Douglas-fir Tussock Moth by Sequential Sampling of Early Larvae in the Lowe Tree Crown written by R. Mason and published by . This book was released on 1978 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis How to Sample Douglas-fir Tussock Moth Larvae by : Richard R. Mason
Download or read book How to Sample Douglas-fir Tussock Moth Larvae written by Richard R. Mason and published by . This book was released on 1979 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sampling Low Density Populations of the Douglas-fir Tussock Moth by Frequency of Occurrence in the Lower Tree Crown by : Richard R. Mason
Download or read book Sampling Low Density Populations of the Douglas-fir Tussock Moth by Frequency of Occurrence in the Lower Tree Crown written by Richard R. Mason and published by . This book was released on 1977 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rating the Risk of Tussock Moth Defoliation Using Aerial Photographs by : Robert Chester Heller
Download or read book Rating the Risk of Tussock Moth Defoliation Using Aerial Photographs written by Robert Chester Heller and published by . This book was released on 1980 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Set includes revised editions of some issues.
Book Synopsis Sampling Low Density Populations of the Douglas-Fir Tussock Moth by Frequency of Occurrence in the Lower Tree Crown (Classic Reprint) by : Richard R. Mason
Download or read book Sampling Low Density Populations of the Douglas-Fir Tussock Moth by Frequency of Occurrence in the Lower Tree Crown (Classic Reprint) written by Richard R. Mason and published by Forgotten Books. This book was released on 2018-03-17 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Sampling Low Density Populations of the Douglas-Fir Tussock Moth by Frequency of Occurrence in the Lower Tree Crown The first criterion of standard ization can be satisfied by a basic relationship that exists between the mean density of larvae and the pro portion of sample units that contain one or more larvae. When larvae are abundant in an area, they will appear in a greater proportion of the samples than when they are rare. The exact form of this relationship depends on the size of the sample unit and the frequency distribution of data. The relationship can be determined by regression analysis or by fitting a theoretical mathematical distribution to field data. 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.
Book Synopsis Monitoring Larval Populations of the Douglas-fir Tussock Moth and the Western Spruce Budworm on Permanent Plots by : Robert R. Mason
Download or read book Monitoring Larval Populations of the Douglas-fir Tussock Moth and the Western Spruce Budworm on Permanent Plots written by Robert R. Mason and published by . This book was released on 1994 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Procedures for monitoring larval populations of the Douglas-fir tussock moth and the western spruce budworm are recommended based on many years experience in sampling these species in eastern Oregon and Washington. It is shown that statistically reliable estimates of larval density can be made for a population by sampling host trees in a series of permanent plots in a geographical monitoring unit. The most practical method is to estimate simultaneously densities on a plot of both insect species by the nondestructive sampling of foliage on lower crown branches of host trees. This can be done either by counting all larvae on sample branches or by estimating the frequency of occurrence of a selected threshold number of larvae in samples. Statistics are given on the expected within- and between-plot variances and the number of sample plots needed in different sized monitoring units. In large monitoring units, plot densities of tussock moth and budworm larvae usually are not normally distributed, but they can be normalized by logarithmic transformation to predict the probability of subpopulations of any given density occurring somewhere in the unit. It is urged that sampling methods be consistent and that monitoring be done annually to accumulate continuous databases that reflect the behavior of defoliator populations over a long period.
Book Synopsis Recurrent Outbreak of the Douglas-fir Tussock Moth in the Malheur National Forest by :
Download or read book Recurrent Outbreak of the Douglas-fir Tussock Moth in the Malheur National Forest written by and published by . This book was released on 1998 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sequential Sampling of Douglas-fir Tussock Moth Populations by : Richard R. Mason
Download or read book Sequential Sampling of Douglas-fir Tussock Moth Populations written by Richard R. Mason and published by . This book was released on 1969 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Forecasting Outbreaks of the Douglas-fir Tussock Moth from Lower Crown Cocoon Samples by :
Download or read book Forecasting Outbreaks of the Douglas-fir Tussock Moth from Lower Crown Cocoon Samples written by and published by . This book was released on 1993 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis SEQUENTIAL SAMPLING OF DOUGLAS-FIR TUSSOCK MOTH POPULATIONS (CLASSIC REPRINT). by : RICHARD R. MASON
Download or read book SEQUENTIAL SAMPLING OF DOUGLAS-FIR TUSSOCK MOTH POPULATIONS (CLASSIC REPRINT). written by RICHARD R. MASON and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sampling Low Density Populations of the Douglas-fir Tussock Moth by Frequency of Occurrence in the Lower Tree Crown by : Richard R. Mason
Download or read book Sampling Low Density Populations of the Douglas-fir Tussock Moth by Frequency of Occurrence in the Lower Tree Crown written by Richard R. Mason and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Forecasting Outbreaks of the Douglas-Fir Tussock Moth From Lower Crown Cocoon Samples (Classic Reprint) by : R. R. Mason
Download or read book Forecasting Outbreaks of the Douglas-Fir Tussock Moth From Lower Crown Cocoon Samples (Classic Reprint) written by R. R. Mason and published by Forgotten Books. This book was released on 2018-01-13 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Forecasting Outbreaks of the Douglas-Fir Tussock Moth From Lower Crown Cocoon Samples A sample plot was 50 randomly selected host trees having lower branches within reach from the ground with the trees distributed over 2 to 5 acres to ha). Plots were selected for the study and sampled for cocoons only if they were expected to have measurable larval populations the next summer. Cocoons were sampled in the fall after moth emergence and oviposition. First and second instars were sampled on the same plots the following June. Densities were estimated in each plot by the frequency of occurrence of tussock moth (that is, cocoons in the fall or larvae in the summer) on the lower branches of 50 host trees (mason 1977, 1979, With this method for sampling cocoons, the underside of three 18-inch (45-cm) branch tips in the lower crown was visually examined on each tree for the presence or absence of cocoons. The proportion, -p, of infested sample trees on the plot was then converted to density of cocoons/1000 square inches m2) of branch area, X, by the theoretical distribution of the Poisson series (mason 1977) where. 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.
Book Synopsis Douglas-fir Tussock Moth by : Combined Forest Pest Research and Development Program (U.S.)
Download or read book Douglas-fir Tussock Moth written by Combined Forest Pest Research and Development Program (U.S.) and published by . This book was released on 1978 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
