Physical and Environmental Geography Commons^™

Active Transportation, Spring/Summer 2012, Issue 26

Sustain Magazine

No abstract provided.

Heat Islands, Fall/Winter 2014, Issue 29

Sustain Magazine

No abstract provided.

Sustainable Behavior, Spring/Summer 2013, Issue 28

Sustain Magazine

No abstract provided.

Local Foods, Fall/Winter 2013, Issue 27

Sustain Magazine

No abstract provided.

Campus Sustainability, Spring/Summer 2014, Issue 30

Sustain Magazine

No abstract provided.

Zero Waste, Spring/Summer 2017, Issue 36

Sustain Magazine

No abstract provided.

Consent Decrees, Fall/Winter 2017, Issue 35

Sustain Magazine

No abstract provided.

Human Ecology, Spring/Summer 2016, Issue 34

Sustain Magazine

No abstract provided.

Citizen Science, Fall/Winter 2016, Issue 33

Sustain Magazine

No abstract provided.

Urban Streams, Spring/Summer 2015, Issue 32

Sustain Magazine

No abstract provided.

Unconventional Energy, Fall/Winter 2015, Issue 31

Sustain Magazine

No abstract provided.

Carbon Neutral, Spring/Summer 2018, Issue 38

Sustain Magazine

No abstract provided.

Political Will, Fall/Winter 2018, Issue 37

Sustain Magazine

No abstract provided.

Nonlinear Reaction–Diffusion Process Models Improve Inference For Population Dynamics, Xinyi Lu, Perry J. Williams, Mevin B. Hooten, James A. Powell, Jamie N. Womble, Michael R. Bower

United States National Park Service: Publications

Partial differential equations (PDEs) are a useful tool for modeling spatiotemporal dynamics of ecological processes. However, as an ecological process evolves, we need statistical models that can adapt to changing dynamics as new data are collected. We developed a model that combines an ecological diffusion equation and logistic growth to characterize colonization processes of a population that establishes long-term equilibrium over a heterogeneous environment. We also developed a homogenization strategy to statistically upscale the PDE for faster computation and adopted a hierarchical framework to accommodate multiple data sources collected at different spatial scales. We highlighted the advantages of using a …

Permafrost Hydrology Drives The Assimilation Of Old Carbon By Stream Food Webs In The Arctic, Jonathan A. O’Donnell, Michael P. Carey, Joshua C. Koch, Xiaomei Xu, Brett A. Poulin, Jennifer Walker, Christian E. Zimmerman

United States National Park Service: Publications

Permafrost thaw in the Arctic is mobilizing old carbon (C) from soils to aquatic ecosystems and the atmosphere. Little is known, however, about the assimilation of old C by aquatic food webs in Arctic watersheds. Here, we used C isotopes (d13C, D14C) to quantify C assimilation by biota across 12 streams in arctic Alaska. Streams spanned watersheds with varying permafrost hydrology, from ice-poor bedrock to ice-rich loess (that is, yedoma). We measured isotopic content of (1) C sources including dissolved organic C (DOC), dissolved inorganic C (DIC), and soil C, and (2) stream biota, including benthic biofilm and macroinvertebrates, and …

Our Envirome, Spring/Summer 2019, Issue 40

Sustain Magazine

No abstract provided.

Plastic Pollution, Fall/Winter 2019, Issue 39.3

Sustain Magazine

No abstract provided.

Plastic Pollution, Fall/Winter 2019, Issue 39.2

Sustain Magazine

No abstract provided.

Plastic Pollution, Fall/Winter 2019, Issue 39

Sustain Magazine

No abstract provided.

Social Interactions Do Not Drive Territory Aggregation In A Grassland Songbird, S.K. Winnicki, S.M. Munguia, E.J. Williams, W.A. Boyle

United States National Park Service: Publications

Understanding the drivers of animal distributions is a fundamental goal of ecology and informs habitat management. The costs and benefits of colonial aggregations in animals are well established, but the factors leading to aggregation in territorial animals remain unclear. Territorial animals might aggregate to facilitate social behavior such as (1) group defense from predators and/or parasites, (2) cooperative care of offspring, (3) extra-pair mating, and/or (4) mitigating costs of extra-pair mating through kin selection. Using experimental and observational methods, we tested predictions of all four hypotheses in a tallgrass prairie in northeast Kansas, United States. Grasshopper Sparrow (Ammodramus savannarum) males …

The Importance Of Landscape Position Information And Elevation Uncertainty For Barrier Island Habitat Mapping And Modeling, Nicholas Matthew Enwright

LSU Doctoral Dissertations

Barrier islands provide important ecosystem services, including storm protection and erosion control to the mainland, habitat for fish and wildlife, and tourism. As a result, natural resource managers are concerned with monitoring changes to these islands and modeling future states of these environments. Landscape position, such as elevation and distance from shore, influences habitat coverage on barrier islands by regulating exposure to abiotic factors, including waves, tides, and salt spray. Geographers commonly use aerial topographic lidar data for extracting landscape position information. However, researchers rarely consider lidar elevation uncertainty when using automated processes for extracting elevation-dependent habitats from lidar data. …

Vegetation Monitoring At Homestead National Monument Of America, Nebraska, 1998–2017, Sherry A. Leis

United States National Park Service: Publications

Executive Summary

The Heartland Inventory and Monitoring Network has sampled permanent monitoring sites in three vegetation community types (restored prairie, successional forest, and bur oak forest) at Homestead National Monument of America since 1998 (includes nine sample years). Network scientists record each species, aerial cover estimates of ground flora, diameter at breast height of midstory and overstory trees, and tree regeneration frequency (tree seedlings and saplings) within these permanent sites.

The park has experienced similar periods of drought and wetness through the monitoring record. Ground cover estimates indicate that prairie litter and bare ground are negatively related; prescribed fire cycles …

Spatiotemporal Variability Of Twenty‐First‐Century Changes In Site‐Specific Snowfall Frequency Over The Northwest United States, Arielle J. Catalano, Paul C. Loikith, C. M. Aragon

Geography Faculty Publications and Presentations

In the Northwest United States, warming temperatures threaten mountain snowpacks. Reliable projections of snowfall changes are therefore critical to anticipate the timeline of change. However, producing such projections is challenging, as most state‐of‐the‐art climate models are limited in sufficiently resolving influential topography. Here we leverage atmospheric freezing level to estimate precipitation phase and project twenty‐first‐century snowfall frequency change at Snowpack Telemetry Network stations across the Northwest. Under “moderate” and “business‐as‐usual” emission pathways in Coupled Model Intercomparison Project phase 5 models, snowfall frequency is projected to decline at all stations. Business‐as‐usual declines accelerate after midcentury at most locations, whereas moderate declines …

The War On Winter: How Americans Put Down Roots On The Northern Plains, 1854-1949, Daniel J. Fischer

Graduate Theses and Dissertations

My dissertation is a study of how the United States was able to expand onto the Northern Great Plains, consisting of the Dakotas, Nebraska, and the eastern parts of Wyoming and Montana, between 1854 and 1949 despite the threat to property, comfort, and survival posed by the region’s harsh winters, which brought intense cold, large snowdrifts, and blinding blizzards. This dissertation argues that five tools – government programs, rapidly changing technology, imagination, strong local communities, and toughness – allowed native-born Americans and European immigrants to survive and become increasingly secure in the region. But it also argues that severe gaps …

Lidar-Based Sinkhole Detection And Mapping In Knox County, Tennessee, J Clint Shannon, David Moore, Yingkui Li, Cathy Olsen

Pursuit - The Journal of Undergraduate Research at The University of Tennessee

Sinkholes are one of the major causes of damage to roads, buildings, and other infrastructure throughout the US. Sinkholes near or on roads are especially costly and occasionally deadly. Knox County and much of East Tennessee are located within karst areas (comprised of porous and soluble limestone and dolomite), deeming it at risk for sinkholes. Currently, Knox County uses contour maps to manually identify sinkholes. Supported by a geographic information system (GIS), we developed a streamlined model to identify the locations and extents of potential sinkholes using 1.3-ft resolution LiDAR (Light Detection and Ranging) data and applied it to the …

A Tourism Impact Index For Water-Based Natural Attractions Field-Tested In Subarctic And Maritime Climates, Jason Fox

Masters Theses & Specialist Projects

Tourism in cold and cool-climate regions is largely characterized by recreational and sightseeing activities at water-based natural attractions such as beaches, coastal cliffs, and waterfalls. While the economic benefits of the tourism industry can contribute to a sustainable future for these regions, the environmental implications of a hastilydeveloped industry cannot be ignored given that cold-climate and cool-climate landscapes are at risk of rapid environmental change from a warming climate and other environmental concerns. This study consisted of the development of the Tourism Impact Index for Water-Based Natural Sites, the first of its kind, and its application and refinement in the …

Thousands Forced To Migrate As Sea Swallows Coastal Belt, Jahanzeb Tahir

MSJ Capstone Projects

Pakistan is one those tropical countries that faces a major climate change challenge. People are generally less concerned about the issue but a great effort is required to face this growing threat. Extreme weather events can already be seen. In 2015 more than 2000 people died because of heat wave which heat in Karachi, the capital of Sindh province.

Karachi, the Arabian coastal region has area of approximately 3,640 km2. The impact of global warming can be measured in the coastal region as sea levels have risen by approximately 10 centimetres in the last century. The sea levels are expected …

Wyoming Wildlife: A Natural History, Paul Johnsgard, Thomas D. Mangelsen

Zea E-Books Collection

This book surveys Wyoming’s mammal, bird, reptile, and amphibian faunas. In addition to introducing the state’s geography, geology, climate, and major ecosystems, it provides 65 biological profiles of 72 mammal species, 195 profiles of 196 birds, 9 profiles of 12 reptiles, and 6 profiles of 9 amphibians. There are also species lists of Wyoming’s 117 mammals, 445 birds, 22 reptiles, and 12 amphibians. Also included are descriptions of nearly 50 national and state properties, including parks, forests, preserves, and other public-access natural areas in Wyoming. The book includes a text of more than 150,000 words, nearly 700 references, a glossary …

Bird Monitoring At Homestead National Monument Of America, Nebraska, Status Report 2009–2017, David G. Peitz, Lloyd W. Morrison, Kristen L. Mecke

United States National Park Service: Publications

Executive Summary

In 2009, the Heartland Inventory Monitoring Network initiated breeding bird surveys on Homestead National Monument of America, Nebraska, to address two objectives: (1) to monitor changes in bird community composition and abundance, and (2) to improve our understanding of relationships between breeding birds and habitat, and the effects of management actions on those relationships. This report evaluates trends in the park’s breeding bird populations in the context of trends observed within the North American Bird Conservation Initiative’s (NABCI) Central Mixed Grass Prairie Bird Conservation Region, the region in which the park is located. By doing so, we can …

Bird Monitoring At Herbert Hoover National Historic Site, Iowa, Status Report 2005–2017, David G. Peitz, Lloyd W. Morrison, Kristen L. Mecke

United States National Park Service: Publications

Executive Summary

In 2005, the Heartland Inventory & Monitoring Network initiated breeding bird surveys on Herbert Hoover National Historic Site, Iowa, to address two objectives: (1) to monitor changes in bird community composition and abundance, and (2) to improve our understanding of relationships between breeding birds and habitat, and the effects of management actions on those relationships. This report evaluates trends in the park’s breeding bird populations in the context of trends observed within the North American Bird Conservation Initiative’s (NABCI) Eastern Tallgrass Prairie Bird Conservation Region , the region in which the park is located. By doing so, we …