Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Life Sciences
Balsam Woolly Aphid Infestation Of Fraser Fir In The Great Smoky Mountains, Kristine D. Johnson
Balsam Woolly Aphid Infestation Of Fraser Fir In The Great Smoky Mountains, Kristine D. Johnson
Masters Theses
The balsam woolly aphid (Adelges piceae (Ratz.)) has within the last decade become a serious pest on Fraser fir (Abies fraseri (Pursh.) Poir.) in the Great Smoky Mountains National Park, causing concern for the scenic and scientific resources of the spruce-fir forests. In order to determine and anticipate the nature and impact of the balsam woolly aphid in this area, a research project was designed to investigate some of the relevant biotic factors.
Objectives of this study were: (1) to determine relationships between levels of infestation, as indicated by aphid population and damage on individual trees, the respective …
Economics Of Timber Resource Availability In A Tennessee Timbershed, John Lee Wells
Economics Of Timber Resource Availability In A Tennessee Timbershed, John Lee Wells
Masters Theses
A study of an eleven-county Tennessee timbershed was conducted in order to: (1) estimate the proportion of the aggregate timber resource actually available for harvest; and (2) search out motives for withholding timber from the market from otherwise commercial forest lands, by United States Forest Service definitions.
The procedures used in meeting the objectives of the study involved the use of a stratified random sample of seventy-six private nonindustrial owners and personal interviews. Owners to be interviewed were selected from county tax roles on a stratified basis of size of forest acres owned. Timber volume and growth estimates were extrapolated …