Forest Sciences Commons^™

Smokejumper Obituary: Baumann, Roddy (Cave Junction 1970), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Herbaceous 2012 (May 19), Amy L. Myers, Julia I. Chapman, Ryan W. Mcewan

Data Files: Drew Woods Permanent Plots

Herbaceous vegetation data collected in 2012 at Drew Woods State Nature Preserve in Darke County, OH. Data key is provided in a supplemental file.

Dynamics Of Land Use/Land Cover Changes And Its Implication On Food Security In Anyigba, North Central, Nigeria, Tokula E. Arome, Sunday P. Ejaro (Phd)

Confluence Journal Environmental Studies (CJES), Kogi State University, Nigeria

This study assessed land use/land cover changes and its effect on Agricultural land in Anyigba. The objectives were to identify and delineate different land use / land cover categories, assess the rate of change that occurred and examine the impact of land use/land cover change on food security using satellite remote sensing data collected at three different years (1987 Land sat TM, 2001 Land Sat TM and 2011 Land Sat ETM). The study utilized GIS software such as Idrisi Andes academic and ArcGIS 9.3. The study area covers approximately 31.8km2, and four major land use/cover classes were utilized (built up, …

Herbaceous 2012 (May 5), Amy L. Myers, Julia I. Chapman, Ryan W. Mcewan

Data Files: Drew Woods Permanent Plots

Herbaceous vegetation data collected in 2012 at Drew Woods State Nature Preserve in Darke County, OH. Data key is provided in a supplemental file.

Improving Woody Biomass Estimation Efficiency Using Double Sampling, David L. Parrott, John M. Lhotka, Songlin Fei, B. Scott Shouse

Forestry and Natural Resources Faculty Publications

Although double sampling has been shown to be an effective method to estimate timber volume in forest inventories, only a limited body of research has tested the effectiveness of double sampling on forest biomass estimation. From forest biomass inventories collected over 9,683 ha using systematic point sampling, we examined how a double sampling scheme would have affected precision and efficiency in these biomass inventories. Our results indicated that double sample methods would have yielded biomass estimations with similar precision as systematic point sampling when the small sample was ≥ 20% of the large sample. When the small to large sample …

An Investigation Of Fraxinus Americana Branch Sway Using A 3 Dimensional Motion Capture System, Anna T. Campiformio

Master's Theses

Abstract

Wind is a dominant abiotic factor that a tree experiences throughout its lifetime and can cause severe tree damage, resulting in risk of injury to humans, and economic and ecological losses. It is thought that trees develop structural properties and architectures that help withstand loading conditions by dissipating wind energy through damping mechanisms. The role of branch motion in reducing potential dangerous wind loads has been the focus of relatively few studies. Even fewer studies have examined tree sway response to natural wind loaded conditions. In this investigation, branch frequencies were calculated for three Fraxinus americana using a three-dimensional …

Ecological Importance Of Large-Diameter Trees In A Temperate Mixed-Conifer Forest, James A. Lutz, Andrew J. Larson, Mark E. Swanson, James A. Freund

Forest Management Faculty Publications

Large-diameter trees dominate the structure, dynamics and function of many temperate and tropical forests. Although both scaling theory and competition theory make predictions about the relative composition and spatial patterns of large diameter trees compared to smaller diameter trees, these predictions are rarely tested. We established a 25.6 ha permanent plot within which we tagged and mapped all trees greater than or equal to 1 cm dbh, all snags greater than or equal to 10 cm dbh, and all shrub patches greater than or equal to 2 m². We sampled downed woody debris, litter, and duff with line …

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 …

Sub-Pixel Classification Of Forest Cover Types In East Texas, Joey Westbrook, I-Kuai Hung, Daniel Unger, Yanli Zhang

Faculty Publications

Sub-pixel classification is the extraction of information about the proportion of individual materials of interest within a pixel. Landcover classification at the sub-pixel scale provides more discrimination than traditional per-pixel multispectral classifiers for pixels where the material of interest is mixed with other materials. It allows for the un-mixing of pixels to show the proportion of each material of interest. The materials of interest for this study are pine, hardwood, mixed forest and non-forest. The goal of this project was to perform a sub-pixel classification, which allows a pixel to have multiple labels, and compare the result to a traditional …

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 …

Developing Silvicultural Protocols For Longleaf Pine (PinusPalustris) Restoration In Loblolly Pine (P. Taeda ) Stands, Benjamin Knapp

All Dissertations

Throughout the southeastern United States, upland pine sites that were once dominated by longleaf pine (Pinus palustris Mill.) have been converted to faster growing species such as loblolly pine (Pinus taeda L.). This study was designed to determine optimal silvicultural techniques for restoring longleaf pine in existing loblolly pine stands while retaining canopy trees and enhancing desirable characteristics of the ground layer vegetation. We applied seven harvesting treatments to six loblolly pine stands at Fort Benning, GA, with treatments including four that created uniform canopy distribution (Control: uncut, with basal area > 14 m2/ha; MedBA: residual basal area of ~ 9 …

Forest Fragmentation Patterns In Maine Watersheds And Prediction Of Visible Crown Diameter In Recent Undisturbed Forest, Brianne Elizabeth Looze

Electronic Theses and Dissertations

Extensive harvesting practices coupled with major ownership change have led to increasing fragmentation of Maine’s forest, a reduction from larger, contiguous mature forest patches into smaller patches. Using Landsat Thematic Mapper (TM) - based forest cover and change maps (1991-2007), fragmentation metrics, and Principal Components Analysis (PCA), this study determined the extent and configuration of forest fragmentation within three ecoregions and 186 level 5 watersheds throughout the state of Maine. Forests in the Northeastern ecoregion had higher harvest rates and more interspersed patches of undisturbed forest. Forests in the South-Central ecoregion are composed of more, smaller patches than their Northeastern …

A 1,461-Year Growing Season Precipitation Reconstruction For The Carolina Coastal Plain, Kathryn Perkins Wolff

Graduate Theses and Dissertations

A recollection and dating of ancient cypress trees and subfossil logs was performed at Black River, North Carolina, and the separate Black River, South Carolina. The new updated and expanded chronologies date from AD 365 to 2010 and 549 to 2010, respectively. Baldcypress ring-width chronologies are dominated by high inter-annual to decadal variability and do not tend to capture century scale fluctuations in tree-ring growth that could be associated with centennial scale change in climate. The tree-ring chronologies were standardized with a technique designed to preserve low frequency variance known as regional curve standardization. The two chronologies were averaged into …

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 …

Sassafras Tea: Using A Traditional Method Of Preparation To Reduce The Carcinogenic Compound Safrole, Kate Cummings

All Theses

The purpose of this research is to quantify the carcinogenic compound safrole in the traditional preparation method of making sassafras tea from the root of Sassafras albidum. The traditional method investigated was typical of preparation by members of the Eastern Band of Cherokee Indians and other Appalachian peoples. Sassafras is a tree common to the eastern coast of the United States, especially in the mountainous regions. Historically and continuing until today, roots of the tree are used to prepare fragrant teas and syrups. These traditional uses can be found across cultures throughout its range. Products made from sassafras are banned …

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 …

Sediment Removal From The San Gabriel Mountains, Mary C. Ferguson

Pitzer Senior Theses

The issue of sediment removal from the San Gabriel Mountains has been a complex issue that has created problems with beach replenishment, habitat destruction and the need to spend millions of dollars at regular intervals to avoid safety hazards. Most recently 11 acres of riparian habitat, including 179 oaks and 70 sycamores, were removed for sediment placement. Other sites including Hahamongna Watershed Park and La Tuna Canyon also face a similar fate. This thesis questions: How did we get to this point of destroying habitat to dump sediment which is viewed as waste product? What are the barriers for creating …

Agenda: A Life Of Contributions For All Time: Symposium In Honor Of David H. Getches, University Of Colorado Boulder. School Of Law, University Of Colorado Law Review

A Life of Contributions for All Time: Symposium in Honor of David H. Getches (April 26-27)

On April 26-27, 2012, Colorado Law honored David H. Getches with a symposium to celebrate his life and legacy of trailblazing scholarship. “A Life of Contributions for All Time” featured a keynote address by Distinguished Professor Charles Wilkinson entitled, “Hero for the People, Hero for the Land and Water: Reflections on the Enduring Contributions of David Getches.” Top scholars in the fields of natural resources, water, and American Indian law reflected on Dean Getches’ contributions and their own insights into these fields, including Professor John Leshy, John Echohawk, Professor Carole Goldberg, Professor Joe Sax, Professor Rebecca Tsosie, Justice Greg Hobbs, …

Smokejumper Obituary: Anderson, William (Missoula 1947), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Begalka, Walter (Missoula 1951), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

An Individual-Based Process Model To Simulate Landscape-Scale Forest Ecosystem Dynamics, Rupert Seidi, Werner Rammer, Robert M. Scheller, Thomas A. Spies

Environmental Science and Management Faculty Publications and Presentations

Forest ecosystem dynamics emerges from nonlinear interactions between adaptive biotic agents (i.e., individual trees) and their relationship with a spatially and temporally heterogeneous abiotic environment. Understanding and predicting the dynamics resulting from these complex interactions is crucial for the sustainable stewardship of ecosystems, particularly in the context of rapidly changing environmental conditions. Here we present iLand (the individual-based forest landscape and disturbance model), a novel approach to simulating forest dynamics as an emergent property of environmental drivers, ecosystem processes and dynamic interactions across scales. Our specific objectives were (i) to describe the model, in particular its novel approach to simulate …

Herbaceous 2012 (April 21), Amy L. Myers, Julia I. Chapman, Ryan W. Mcewan

Data Files: Drew Woods Permanent Plots

Herbaceous vegetation data collected in 2012 at Drew Woods State Nature Preserve in Darke County, OH. Data key is provided in a supplemental file.

Maple Syrup: St. John’S Sweetest Springtime Tradition, Stephen G. Saupe

Biology Faculty Publications

St. John’s is the home of one of Minnesota’s oldest maple syrup operations. The monks began making syrup in 1942 and have continued roughly every other spring until the present. Currently, the operation is jointly run by the Abbey and St. John’s Arboretum and it is one of the few maple syrup operations associated with a Minnesota college or university. The process by which maple syrup is made at St. John’s differs little from the procedures begun more than 60 years ago. In spring, sugar maple trees are tapped, sap is collected, and then it is boiled in the sugar …

Smokejumper Obituary: Hentze, Mark (Redmond 2000), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Herbaceous 2012 (April 9), Amy L. Myers, Julia I. Chapman, Ryan W. Mcewan

Data Files: Drew Woods Permanent Plots

Herbaceous vegetation data collected in 2012 at Drew Woods State Nature Preserve in Darke County, OH. Data key is provided in a supplemental file.

Adaptation Of Annual Forage Legumes In The Southern Great Plains, John A. Guretzky, Twain J. Butler, Jim P. Muir

Great Plains Research: A Journal of Natural and Social Sciences

Our objective was to evaluate adaptation and compatibility of cool-season annual legumes overseeded into perennial grasses in the southern Great Plains. Freeze damage, vigor, and standing crop of 14 annual legume species were evaluated during spring at three locations in Oklahoma and Texas from 2006 to 2008. Across locations and years, standing crop of hairy vetch (Vicia villosa Roth) and Austrian winter pea (Pisum sativum L. ssp. arvense (L.) Poir.] averaged 3,513 and 3,210 kg dry matter (DM) ha^-1, respectively. Standing crop of crimson clover (Trifolium incarnatum L.) and arrowleaf clover (T. vesiculosum Savi) averaged …

The Dandy Scroll, Spring 2012, University Of Maine Pulp And Paper Foundation

General University of Maine Publications

The Spring 2012 issue of The Dandy Scroll newsletter produced by the University of Maine Pulp and Paper Foundation.

The Dandy Scroll, Summer 2012, University Of Maine Pulp And Paper Foundation

General University of Maine Publications

The Summer 2012 issue of The Dandy Scroll newsletter produced by the University of Maine Pulp and Paper Foundation.

Phylogenetics Of Morus (Moraceae) Inferred From Its And Trnl-Trnf Sequence Data., Madhav Nepal

Madhav Nepal

Smokejumper Obituary: Cherry, Parley E. "Bill" (Missoula 1947), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.