Other Scholarly Content

 

Status of mountain pine beetle infestations, Yellowstone National Park, Wyoming, 1973 Público Deposited

Contenido Descargable

Descargar PDF
https://ir.library.oregonstate.edu/concern/defaults/47429b53z

Descriptions

Attribute NameValues
Alternative Title
Creator
Abstract
  • The mountain pine beetle infestation has been epidemic in lodgepole pine in Yellowstone National Park since 1966. Infestation boundaries have advanced steadily northward and eastward. The infestation now encompasses nearly one-half of the total Park area. Surveys indicate a decline in tree mortality the last 2 years. In 1970, an average of 18.9 lodgepole pine was killed per acre. In 1971, 19.0 were killed per acre. In 1972 and 1973, these figures declined to 16.7 and 6.6 trees per acre respectively. Average diameter of attacked trees has decreased from 12.0 inches d.b.h. in 1971 to 10.0 inches d.b.h. in 1973. A decrease in number of infested trees occurred in older infestation centers in the southwest corner of the Park due to depletion of available hosts.
Resource Type
Fecha Disponible
Fecha de Emisión
Series
Subject
Declaración de derechos
Publisher
Language
File Format
File Extent
  • 4093952 bytes
Digitization Specifications
  • Scanned at 600 DPI using a Cannon DR-9080C in TIF format. PDF generated through Capture Perfect using OmniPage Professional 15 for textual OCR.
Replaces

Relaciones

Parents:

This work has no parents.

Elementos