Physical and Environmental Geography Commons^™

Dendrogeomorphic Analysis Of Debris Slides On Mt. Le Conte, Great Smoky Mountains National Park, Tennessee, U.S.A., Maegen Lee Rochner

Masters Theses

Research conducted during the past 30 years tested the use of tree rings to date mass movement events in the mountain areas of Europe and the western and southwestern United States, but few studies have been performed in the eastern U.S., where debris flows, landslides, and rock falls in the Appalachian Mountains pose a common threat to human life and property. One area of particular interest is Great Smoky Mountains National Park (GSMNP). For this study, I tested mature red spruce (Picea rubens Sarg.) trees located on or near a debris slide boundary on Mt. Le Conte (LC01) in …

Block 271, Reviving An Industrial Artifact, Jared Thomas Pohl

Masters Theses

Vacant industrial sites are scattered throughout our cities all across the country. These sites, these remnants of industry, are occupied by a very interesting category of buildings. They are artifacts from an industrial era that served very unique and specific functions. These service buildings suffered programmatic failure and have lost their vitality. They have entered a form of hibernation, waiting for the post-industrial epoch to wake them up.

The building stock under investigation makes up a large portion of the city’s structures. Identifiable by their heroic scale, clean articulated lines and tendency to be vacant, these service buildings raise arguments …

Climate Drivers Of Wildfire Activity In The Magdalena Mountains Of New Mexico, U.S.A., Elizabeth Anne Schneider

Masters Theses

In recent years, crown fires have raged through mixed-conifer forests in the American Southwest that historically experienced frequent, low-severity wildfires. Land management agencies now wish to restore wildfires to their historical range of variability, but this requires information on fire regimes before Euro-American disturbance took place. We characterized the historical fire regime of a high elevation, mixed-conifer forest in the Magdalena Mountains, New Mexico. This research evaluated the different climate drivers, represented by the Palmer Drought Severity Index (PDSI), the El Niño-Southern Oscillation (ENSO), the Pacific Decadal Oscillation (PDO), and the Atlantic Multidecadal Oscillation (AMO), that influence the occurrence of …

Stable Isotope Analysis Of Lake Sediments From Laguna Santa Elena And Laguna Azul, Costa Rica, Matthew Timothy Kerr

Masters Theses

Lake sediments are increasingly important archives of human-environment interactions and paleoclimate in the neotropics. In Costa Rica, Anchukaitis and Horn (Palaeogeography, Palaeoclimatology, Palaeoecology 221: 35–54, 2005) established a land-use history for Laguna Santa Elena (8.9306 N, 82.9275 W, 1055 m elevation), a small lake in the Diquís archaeological region, based on pollen and charcoal analyses of a 7-meter sediment core. I carried out stable carbon and nitrogen isotope and loss-on-ignition analyses at higher resolution to extend the existing 2000-year record. The new geochemical data parallel major trends in botanical proxies but also reveal aspects of human and environmental dynamics …

A Multidimensional Analysis Of The Great Green Wall: The Environmental And Social Effects Of Reafforestation In Senegal, Anna Eugenia Alsobrook

Masters Theses

The north-central region of Senegal is home to the Great Green Wall (GGW)—a reafforestation project aimed at restoring decades–old, degraded land conditions by establishing tree belts and community gardens. Its presence on the ground has changed the local landscape and altered the social institutions governing the daily lives of the people it aims to protect.

My study is an in-progress assessment of the GGW towards its two major goals: 1) improving the lives of the people of the Sahel and increasing their capacity to adapt to climate change and drought, and 2) improving the state of the ecosystem and increasing …

Methods For The Study Of Soil Charcoal As An Indicator Of Fire And Forest History In The Appalachian Region, U.S.A., Sally P Horn, Christopher A. Underwood

Geography Publications and Other Works

Charcoal particles in soils and sediments of the Appalachian region provide evidence of long-term fire history relevant to resource management and to studies of paleoclimate, vegetation history, and the effects of prehistoric and historic humans on the environment. Charcoal records of fire history are of low resolution in comparison to dendrochronological records, but reach well beyond the oldest trees in most areas, providing evidence of fires thousands or tens of thousands of years ago. We focus here on fire history reconstruction from soil charcoal, which provides site-specific evidence of past fires and potentially forest composition. Charcoal > 2 mm may be …