Geography Commons^™

Mapping And Radiocarbon Dating Archaic Period Monuments: La Alberca Structure Complex, Highland Michoacán, Mexico, Mark F. Steinkraus

All Master's Theses

Ongoing collaborations with the Comunidad Indígena de Nuevo San Juan Parangaricutiro hold great potential for exploring the origins of sedentary ranked communities that predate others in Mesoamerica by as much as one thousand years. Three carbon samples from the lower buried portions of the Central Structure at La Alberca Complex yield a date range of 7245-6470 cal B.P. The carbon sample laying on an upper tier of the feature yields a date of 4780 cal B.P. These dates suggest that the feature is 7000 to 6000 years old and may have been in use as recently as 5000 to 4000 …

Sustainable Safari Practices: Proximity To Wildlife, Educational Intervention And The Quality Of Experience, Ryan Devine Tarver

All Master's Theses

This research examines the perceived quality of experience for safari tourists in relation to wildlife viewing proximities and the potential of educational interventions as a management strategy to mitigate adverse impacts of safari participant crowding. Crowding emanates from the safari tourist preferences to obtain close proximity to animals, particularly large mammals. Recognizing these preferences and associated impacts to animal behavior defined in previous research, we develop and deliver a survey instrument designed to measure the perceived quality of experience of the safari tourist while controlling for the viewing proximity variable. The survey instrument involves responding to stock photos selected to …

Assessing The Impact Of Vertical Land Motion On Twentieth Century Global Mean Sea Level Estimates, B. D. Hamlington, P. Thompson, W. C. Hammond, G. Blewitt, R. D. Ray

CCPO Publications

Near-global and continuous measurements from satellite altimetry have provided accurate estimates of global mean sea level in the past two decades. Extending these estimates further into the past is a challenge using the historical tide gauge records. Not only is sampling nonuniform in both space and time, but tide gauges are also affected by vertical land motion (VLM) that creates a relative sea level change not representative of ocean variability. To allow for comparisons to the satellite altimetry estimated global mean sea level (GMSL), typically the tide gauges are corrected using glacial isostatic adjustment (GIA) models. This approach, however, does …

Comparing Unmanned Aerial Systems (Uas) Structure-From-Motion Digital Surface Modeling To Laser Imaging Detection And Ranging (Lidar), Joshua D. Schane

Geography Masters Research Papers

UAS (unmanned-aerial systems) mapping is an emerging technology in spatial science. UAS, more informally referred to as “drones,” are small, radio-controlled or autonomous aerial platforms outfitted with camera sensor systems that can be deployed to fly missions for mapping terrain and structures. With the use of a photogrammetry technique called structure-from-motion, overlapping aerial images can be developed into high-resolution spatial data (< 5-cm). These data are georeferenced by GPS location information assigned to aerial targets which act as ground-control points (GCPs). This research explores the accuracy of the UAS-derived digital surface model (DSM) as it relates to a LIDAR DSM of the same study area in St. Helens, Oregon.

The site that was chosen to be mapped was a large wastewater treatment plant, with surrounding natural areas, residential, and industrial properties. The site was mapped using a small quadcopter-style UAS which was programmed autonomously; the overlapping aerial …

Glacial Deposits, Vol. 41, 2016, Department Of Geography-Geology

Glacial Deposits

Newsletter of the Department of Geography-Geology

Predictive Modeling Of Sinkhole Hazards Using Synthetic Aperture Radar Interferometry (Insar) Subsidence Measurements And Local Geology, William G. Powell

Electronic Theses and Dissertations

The mining of salt domes provides economically important resources through salt and brine production and storage of petroleum products as part of the U.S. Strategic Petroleum Reserve. In order to assess the risk to nearby communities for potential of salt dome collapse, it is important to understand the growth of the Bayou Corne sinkhole and the conditions surrounding the Napoleonville Salt Dome that may have exacerbated its formation. The Bayou Corne sinkhole in Assumption Parish, Louisiana has been expanding since it formed overnight on 2 August 2012. Growing from slightly over 2 acres to more than 30 acres today, the …

Using Food Flow Data To Assess Sustainability: Land Use Displacement And Regional Decoupling In Quintana Roo, Mexico, Marco Millones, Benoit Parmentier, John Rogan, Birgit Schmook

Geography

Food flow data provide unique insights into the debates surrounding the sustainability of land based production and consumption at multiple scales. Trade flows disguise the spatial correspondence of production and consumption and make their connection to land difficult. Two key components of this spatial disjuncture are land use displacement and economic regional decoupling. By displacing the environmental impact associated with food production from one region to another, environmental trajectories can falsely appear to be sustainable at a particular site or scale. When regional coupling is strong, peripheral areas where land based production occurs are strongly linked and proximate to consumption …

The Geography Of Learning: Ferrari Gestione Sportiva 1929-2008, Mark Jenkins, Stephen Tallman

Management Faculty Publications

This article considers the mechanisms that permit and enhance the movement of highly tacit component (technical) knowledge and geographically sticky architectural knowledge across borders and between clusters and firms. We address a number of critical research questions that relate to intra- and inter-locational knowledge transfer. We use a theory-driven, longitudinal, single case study to develop a conceptual framework to examine and describe how shifting the geography of knowledge sourcing can facilitate architectural change by following the transformation of one business unit within a specialist global organization through a series of evolutionary steps that involved internalizing new component knowledge from other …

Ballot-Box Environmentalism Across The Golden State: How Geography Influences California Voters’ Demand For Environmental Public Goods, William Skyler Lewis

Pomona Senior Theses

In California, voters frequently face ballot propositions dealing directly or indirectly with environmental protection. Records of these votes provide powerful evidence of the character of voters’ demand and willingness-to-pay for environmental public goods (e.g., air quality, watershed ecosystem services, parks and recreation), and have been used in past environmental econometrics research to produce aggregated income and price effect estimates. Using neighborhood-level voting records on seven environmental-related ballot propositions in California between 2002 and 2010, this econometric study investigates the nature of voters’ demand for environmental public goods, focusing on the effect of household income on pro-environment voting. Unlike previous studies, …

Everyday Farm Life In The Moxee Valley 1915-1950: Historical Ethnography, Terri Towner

All Master's Theses

This study collected oral histories of those who lived or worked in the Moxee Valley, within the greater Yakima Valley of Washington State from 1915-1950. It documents and records the historical and cultural processes of farm life and its evolution for people living in this foremost hop-growing region of the United States. The larger goal is to characterize the community and social processes for use as primary source documentation to create historically accurate programs at the Gendron Hop Ranch-Living History Farm near Moxee. Nineteen participants were interviewed. Topics addressed in the study include farming in the Valley, the household, roles …

Geog 140: Human Geography—A Peer Review Of Teaching Project Inquiry Portfolio—"Music And The Geography Of Place: Engaging The Geographical Imagination", Katherine Nashleanas

UNL Faculty Course Portfolios

The present project uses cooperative learning strategies that requires students in large classes to collaborate in applying intellectually challenging articles on place, space, sacred spaces, tourist places, and commodification of place to the development of a video project linking music to place and landscape. As an extension of their group activity, students are teaching each other how to apply concepts from the assigned articles to their projects in creative ways while engaging in critical thinking and exercising their geographical imagination.

You Are What You (Can) Eat: Cultivating Resistance Through Food, Justice, And Gardens On The South Side Of Chicago, Ida B. Kassa

Pomona Senior Theses

Though food is widely recognized as a basic necessity for humanity, disparate access to it highlights whose bodies, environments, health, nutrition, and utter existence has mattered most in American society—and whose has mattered the least. Through interviews with residents of the South Side of Chicago about the alternative food pathway they’ve forged for themselves, we learn that food becomes much more than just sustenance. Interviewees describe our present day food system as undeniably rooted in a history of enslavement and exploitation of Black and Brown bodies; they regard food justice work by communities of color as an important source of …

All’S Whale That Ends Whale: How Correctly Identifying Antarctic-Feeding Grounds Of Oceania Humpbacks Could Save An Endangered Population, Davey Holmes

Pomona Senior Theses

Although major whaling practices have ceased, increasing human involvement and influence in the world’s marine ecosystems continue to adversely effect global whale populations. It is a major concern throughout Antarctic waters, where endangered Oceania Humpback Whales (Megaptera novarangliae) annually feed. This study analyzes the extent to which a proposed marine protected area within the Ross Sea may indirectly harm the last remaining endangered population of Humpbacks. Using current satellite tracks of southern Humpback migrations, this model maps the effects of displaced Toothfish fisheries, and suggests further conservations efforts, based on New Zealand’s Precautionary Approach, to protect these vulnerable whales.

Predicting The Water Quality Of Shallow Arctic Ponds Using Remote Sensing, Gabriela Tarin

Open Access Theses & Dissertations

Barrow, Alaska is in a region dominated by Arctic tundra of which a substantial part is covered by lakes and ponds. Despite their dominance in the landscape, freshwater ecosystems in the Arctic have been insufficiently studied. It is clear that furthering understanding of how Arctic water bodies are responding to warming will depend on the analysis of changes in the concentration of organic and inorganic constituents in the water; however, scientists are faced with the task of sampling many remote sites in a relatively hostile environment. Thus, the exploration and incorporation of remote methods for monitoring changes in water quality. …

Impacts Of Environmental Changes To The Middle Rio Grande Landscape On Ysleta Del Sur Pueblo's Cultural And Cermonial Sustainability, Andrea L. Everett

Open Access Theses & Dissertations

Given future climate scenarios, this Thesis investigates how plausible climate changes will further impact the Native American community of Ysleta del Sur Pueblo's (Tiguas) cultural continuity and access to riparian ecosystem services along the Rio Grande River (specific to Tigua tradition; riparian vegetation used in ceremony, i.e. Gooding's and Coyote willow). The project aims to (1) describe and understand the relationship between regional climatic changes, anthropogenic changes, and major events in Tigua history, (2) identify rates and patterns of riparian vegetation changes, (3) evaluate impacts on cultural and provisioning ecosystem services relevant to Tigua culture, and relate these to climate …

Geospatial Modeling And Assessment Of The Environmentally Sensitive Lands In The Midwestern U.S., William M. Soohoo

Theses and Dissertations

Agricultural land-use change, especially corn expansion, has been accelerating since the 2000s to meet the growing bioenergy demand in the United States. This study identifies the environmentally sensitive lands (ESLs) in the U.S. Midwest and explores the environmental implications of land-use changes in this vital agricultural region. A new distance factor is introduced to a soil erodibility model to take wetlands and waterbodies into account. With a GIS-Ranking Model, the ESLs in 2008 and 2011 (two representative years of corn expansion) in the study region are ranked based on their soil erosion severity. Under various scenarios of bioenergy land-use change …

Satisfaction, Water And Fertilizer Use In The American Residential Macrosystem, Peter M. Groffman, J. Morgan Grove, Colin Polsky, Neil D. Bettez, Jennifer L. Morse, Jeannine Cavender-Bares, Sharon J. Hall, James B. Heffernan, Sarah E. Hobbie, Kelli L. Larson, Christopher Neill, Kristen Nelson, Laura Ogden, Jarlath O'Neil-Dunne, Diane Pataki, Rinku Roy Chowdhury, Dexter H. Locke

Geography

Residential yards across the US look remarkably similar despite marked variation in climate and soil, yet the drivers of this homogenization are unknown. Telephone surveys of fertilizer and irrigation use and satisfaction with the natural environment, and measurements of inherent water and nitrogen availability in six US cities (Boston, Baltimore, Miami, Minneapolis-St. Paul, Phoenix, Los Angeles) showed that the percentage of people using irrigation at least once in a year was relatively invariant with little difference between the wettest (Miami, 85%) and driest (Phoenix, 89%) cities. The percentage of people using fertilizer at least once in a year also ranged …

What's Scale Got To Do With It? Models For Urban Tree Canopy, Dexter H. Locke, Shawn M. Landry, J. Morgan Grove, Rinku Roy Chowdhury

Geography

The uneven provisioning of ecosystem services has important policy implications; yet the spatial heterogeneity of tree canopy remains understudied. Private residential lands are important to the future of Philadelphia's urban forest because a majority of the existing and possible tree canopy is located on residential land uses. This article examines the spatial distribution of tree canopy in Philadelphia, PA and its social correlates. How are existing tree canopy and opportunities for additional tree canopy distributed across the city of Philadelphia and with respect to three explanations: (i) population density, (ii) the social stratification luxury effect, and 3) lifestyle characteristics of …

Distinguishing Land Change From Natural Variability And Uncertainty In Central Mexico With Modis Evi, Trmm Precipitation, And Modis Lst Data, Zachary Christman, John Rogan, J. Ronald Eastman, B. L. Turner

Geography

Precipitation and temperature enact variable influences on vegetation, impacting the type and condition of land cover, as well as the assessment of change over broad landscapes. Separating the influence of vegetative variability independent and discrete land cover change remains a major challenge to landscape change assessments. The heterogeneous Lerma-Chapala-Santiago watershed of central Mexico exemplifies both natural and anthropogenic forces enacting variability and change on the landscape. This study employed a time series of Enhanced Vegetation Index (EVI) composites from the Moderate Resolution Imaging Spectoradiometer (MODIS) for 2001-2007 and per-pixel multiple linear regressions in order to model changes in EVI as …

Recent Pause In The Growth Rate Of Atmospheric Co2 Due To Enhanced Terrestrial Carbon Uptake, Trevor F. Keenan, I. Colin Prentice, Josep G. Canadell, Christopher A. Williams, Han Wang, Michael Raupach, G. James Collatz

Geography

Terrestrial ecosystems play a significant role in the global carbon cycle and offset a large fraction of anthropogenic CO2 emissions. The terrestrial carbon sink is increasing, yet the mechanisms responsible for its enhancement, and implications for the growth rate of atmospheric CO2, remain unclear. Here using global carbon budget estimates, ground, atmospheric and satellite observations, and multiple global vegetation models, we report a recent pause in the growth rate of atmospheric CO2, and a decline in the fraction of anthropogenic emissions that remain in the atmosphere, despite increasing anthropogenic emissions. We attribute the observed decline to increases in the terrestrial …