Download or read book Predicting Tree Mortality Following Gypsy Moth Attack written by Dan M. Harman and published by . This book was released on 197? with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tree Condition and Mortality Following Defoliation by the Gypsy Moth written by Robert W. Campbell and published by . This book was released on 1972 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Economic Analysis of the Gypsy Moth Problem in the Northeast written by and published by . This book was released on 1973 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Economic Analysis of the Gypsy Moth Problem in the Northeast written by Brian Randolph Payne and published by . This book was released on 1973 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Guidelines are presented for determining dollar losses in residential property values from tree mortality caused by the gypsy moth. The method is based on an earlier study in Amherst, Massachusetts, of the contribution of trees to property values. For each target area, the method requires data on property value, lot size, and number of trees 6 inches dbh and larger for a sample of residential properties. Also required are predictions of tree mortality from a gypsy moth attack.

Download or read book Mortality Risks for Forest Trees Threatened with Gypsy Moth Infestation written by Owen W. Herrick and published by . This book was released on 1987 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Economic analysis of the gypsy moth problem in the Northeast written by David A. Gansner and published by . This book was released on 1978 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Site Productivity and Tree Mortality on New Frontiers of Gypsy Moth Infestation written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Site Productivity and Tree Mortality on New Frontiers of Gypsy Moth Infestation written by David A. Gansner and published by . This book was released on 1987 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tree Condition and Mortality Following Defoliation by Gypsy Moth written by and published by . This book was released on 1972 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Technical Report NE written by and published by . This book was released on 1980 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Technical Report NC written by and published by . This book was released on 1981 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book HARNESSING THE POWER OF GEOSPATIAL DATA WITH RANDOM FOREST TO FORECAST GYPSY MOTH OUTBREAK written by Zhiyue Xia and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The gypsy moth (Lymantria dispar) is a non-native forest pest that was introduced to the USA in 1869. Since then it has spread continuously across most of the northeastern US. Larvae of this insect prefer feeding on oak species, although other species may also serve as host trees. During an outbreak, larvae defoliate forests across large regions and repeated defoliation can predispose the trees to attacks by secondary insect pests or fungal infections causing tree mortality. Gypsy moth outbreaks are episodic and are difficult to predict. Development of forecasting models remains a challenge despite their potential usefulness in effectively mobilizing resources to deal with the outbreaks. Previous studies indicate that vegetation attributes measured through remote sensing, terrain, and climate characteristics influence the likelihood of gypsy moth outbreaks. In addition, temporal and spatial variables describing the cyclic and spatial patterns of the outbreaks could be very valuable in forecasting outbreaks.In this thesis, a model is developed to forecast gypsy moth outbreaks using Pennsylvania as a case study. Systematic sampling was used to locate 5,042 sample pixels across forest areas of Pennsylvania and focus on defoliation episodes during the time period 2000-2016 to develop the model. For each pixel, a large suite of temporal and spatial predictor variables is derived from inventory data, climate, topography, and remote sensing measures of vegetation status, while the occurrence of defoliation is obtained from annual defoliation sketch maps. Machine learning modeling algorithm Random Forests was used in this study, which has a well-documented predictive ability and can deal with a large number of variables. The model performance is assessed by hindcasting defoliations in 1985, 1990 and 1995, and by cross validation leaving out one year of the fit dataset at a time. An accurate forecasting model is of critical importance for projecting the spatial extent of future defoliations and for forest management planning.

Download or read book Silvicultural Guidelines for Forest Stands Threatened by the Gypsy Moth written by Kurt William Gottschalk and published by . This book was released on 1993 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Economic Analysis of the Gypsy Moth Problem in the Northeast written by Roger E. McCay and published by . This book was released on 1973 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Bulletin written by and published by . This book was released on 1981 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gypsy Moth Defoliation Tree Mortality Relationships in Rhode Island written by David Bishop Halliwell and published by . This book was released on with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gypsy Moth Management in the United States written by United States. Forest Service and published by . This book was released on 1995 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: