Life Sciences Commons^™

Spatial, Temporal, And Tri-Trophic Distribution Of Imidacloprid, Olefin And 5-Hydroxy And Their Effect On Hemlock Woolly Adelgid, Adelges Tsugae Annand, (Hemiptera: Adelgidae)., Carla Irene Coots

Doctoral Dissertations

Extensive mortality of eastern hemlock, Tsuga canadensis (L.) Carrière, resulting from infestation by hemlock woolly adelgid, Adelges tsugae Annand (Hemiptera: Adelgidae) (HWA), has occurred throughout the eastern United States. Imidacloprid, a systemic insecticide, is used to control hemlock woolly adelgid. The metabolism of imidacloprid in eastern hemlock produces two metabolites of toxicological interest, olefin and 5-hydroxy. The objectives of this study were to 1.) determine the distribution and persistence of the metabolites in eastern hemlock in the southern Appalachians, 2.) their effect on hemlock woolly adelgid mortality, 3.) assess the tri-trophic movement of these compounds, 4.) evaluate the effects of …

Sp748 Estimating Weight Of Logs And Standing Timber: A Guide For Foresters, The Forest Industry And Landowners, David Mercker, Adam Taylor

Forestry, Trees, and Timber

No abstract provided.

Mycobacterium Avium Subsp. Paratuberculosis Lipophilic Antigen Causes Crohn’S Disease-Type Necrotizing Colitis In Mice, Eiichi Momotani, Hiroshi Ozaki, Masatoshi Hori, Shizuo Yamamoto, Takashi Kuribayashi, Shigetoshi Eda, Masahiro Ikegami

Animal Science Publications and Other Works

Background: A 2,4,6-trinitrobenzene sulfonic acid (TNBS)-induced murine colitis model was developed to investigate the pathogenesis and to evaluate a method of treating human Crohn’s disease. This experimental model rapidly induces colitis similar to human Crohn’s disease lesion in a reproducible manner. However, natural exposure of the human digestive tract to TNBS is unrealistic. A novel animal model based on realistic data is eagerly anticipated in future research on pathogenesis of CD. Method: We evaluated the potency of Map antigen molecules in an effort to develop a novel colitis model using a more realistic source than TNBS. We prepared the Map …

Res Rep 12-04 Standard Bioassessment Procedures For Evaluating Ecological Restoration In Southeastern Hardwood Bottomlands, Mattew J. Gray, Elizabeth A. Summers

Forestry, Trees, and Timber

No abstract provided.

Tree Growth Dynamics, Fire History, And Fire-Climate Relationships In Pine Rocklands Of The Florida Keys, U.S.A., Grant Logan Harley

Doctoral Dissertations

Pine rocklands are globally endangered, fire-maintained communities currently restricted to small habitat areas in southern Florida, Cuba, and the Bahamas. The purpose of this dissertation research was to identify the long-term ecological disturbance regimes and climatic trends responsible for the persistence of pine rocklands, and examine how human-induced changes during the 20^th century contributed to decline of these communities. This research applied techniques of dendrochronology in extreme southern Florida, in a subtropical region where tree‐ring science has never been applied, to increase the understanding of how anthropogenic and natural disturbance events have decreased the spatial distribution of South Florida …

Chemical Responses Of Two Deciduous Trees After 10-Years Of Exposure To Free Air Co2 Enrichment, Keonhee Kim

Masters Theses

Globally, the mean atmospheric carbon dioxide level has risen steadily since pre-industrial times, which is largely attributable to human activities such as increased emissions from fossil fuel burning, and clearing of forests. Numerous research efforts have been made to understand responses of trees in higher atmospheric carbon dioxide levels in short term, small-scale experiments. To overcome the limitations of these experiments and understand the response of trees in a natural environment, the Free Air Carbon dioxide Enrichment (FACE) project was proposed. FACE is a global project that involves experimentally enriching carbon dioxide in the atmosphere of terrestrial ecosystems. The FACE …

Interacting Effects Of Fire Activity, Climate, And Habitat Diversity On Forest Dynamics, El Malpais National Monument, New Mexico, Usa, Alex John Pilote

Masters Theses

The historic effects of fire and climate on stand dynamics in the ponderosa pine-dominated forests of the American Southwest are of increasing concern to land management agencies. Using present forest stand structure, the mixed-conifer forests of the volcanic features in El Malpais National Monument were analyzed at three separate sites: a cinder cone, an ancient basalt flow, and an isolated “island” (kipuka) completely surrounded by basalt flows. Increment cores were collected from 632 trees in 19 plots within the monument to obtain dates of establishment. These dates were compared with historic fire histories and precipitation records to analyze the effects …

Examining Methodologies To Assess Abrasion In Tree Crowns, Tyler Matt Lynn Brannon

Masters Theses

New methodologies were explored to determine if crown abrasion affects shoot elongation of preformed and sustained growth form species during stand development. Bud growth form differences can influence which species’ buds are abraded or broken upon impact with adjoining crowns affecting crown growth. Analysis of branch elongation, apical bud toughness and tree sway were investigated in this study. Branch elongation was measured on crowns where growth was inhibited by crowns of adjacent trees and on crowns where growth is uninhibited. Bud mass was also measured. Bud toughness by species’ shoot growth form was evaluated using a pendulum impact tester for …

Pb 1769 A Guide To Successful Wildlife Food Plots Blending Science With Common Sense, Craig A. Harper

Wildlife and Fisheries

Planting food plots is by far the most popular habitat management practice among landowners wanting to enhance wildlife habitat. NOTE: Hard copies of this publication are currently unavailable.

A newer version of this title is available: https://extension.tennessee.edu/publications/Documents/PB1874.pdf.