Open Access. Powered by Scholars. Published by Universities.®

Geography Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 91 - 120 of 141

Full-Text Articles in Geography

Determining Home Range And Preferred Habitat Of Feral Horses On The Nevada National Security Site Using Geographic Information Systems, Ashley V. Burns May 2014

Determining Home Range And Preferred Habitat Of Feral Horses On The Nevada National Security Site Using Geographic Information Systems, Ashley V. Burns

Geography and the Environment: Graduate Student Capstones

Feral horses (Equus caballus) are free-roaming descendants of domesticated horses and legally protected by the Wild and Free-Roaming Horses and Burros Act of 1971, which mandates how feral horses and burros should be managed and protected on federal lands. Using a geographic information system to determine the home range and preferred habitat of feral horses on the federally managed Nevada National Security Site can enable wildlife biologists in making best management practice recommendations. Site suitability was calculated for elevation, forage, slope, water presence and horse observations and were combined in successive iterations into one polygon. Suitability rankings established …


Montgomery County, Md Public Schools: Student Performance And Achievement Of Low-Income And Minority Students, Richard Joseph Apr 2014

Montgomery County, Md Public Schools: Student Performance And Achievement Of Low-Income And Minority Students, Richard Joseph

Geography and the Environment: Graduate Student Capstones

The student demographics of Montgomery County Public Schools (MCPS) in Maryland have changed dramatically since 1970 resulting in a majority-minority de facto segregated school system. A major concern of MCPS is the student performance and achievement gap between students of different racial, ethnic, and economic backgrounds.

Using data available from MCSP the performance and achievement of MCPS high school students will be examined for differences between students attending high, medium or low poverty schools. Six high schools will be selected for examination, two for each of the three poverty categories. Primary focus will be to compare the performance and achievement …


Ailanthus Altissima In Urban Neighborhoods Of Denver, Colorado, Jenny Todd Mar 2014

Ailanthus Altissima In Urban Neighborhoods Of Denver, Colorado, Jenny Todd

Geography and the Environment: Graduate Student Capstones

Ailanthus altissima (Mill.) Swingle, also known as Tree of Heaven, is a non-native tree found throughout North America. The competitive advantages of Ailanthus make it a formidable invader that reduces biodiversity, especially in urban environments. In these areas, Ailanthus can cause structural damage to buildings, pavement, and other infrastructure such as plumbing. Although Ailanthus can commonly be observed throughout neighborhoods of Denver, Colorado, its prevalence and frequency are not well documented. The purpose of this study was to determine the distribution and abundance of Ailanthus among selected urban, residential areas and parks within the City of Denver. This was accomplished …


Identifying Potential Wilderness Areas On The Fremont-Winema National Forest With Arcgis Modelbuilder, Zach Adams Jun 2013

Identifying Potential Wilderness Areas On The Fremont-Winema National Forest With Arcgis Modelbuilder, Zach Adams

Geography and the Environment: Graduate Student Capstones

The Fremont-Winema National Forest administers over two million acres in south central Oregon. Part of managing this landscape includes overseeing existing wilderness areas and identifying new potential wilderness areas. In the past this process has been cumbersome, with little thought given to standardizing the effort across the administrative area. This project was an effort to develop a geospatial model that incorporates U.S. Forest Service spatial datasets ultimately standardizing the potential wilderness identification process during site specific NEPA analysis.


Gis Analysis Of Placer Gold Mining Potential In The Yuba River Watershed, California, J. D. Chandler Jun 2013

Gis Analysis Of Placer Gold Mining Potential In The Yuba River Watershed, California, J. D. Chandler

Geography and the Environment: Graduate Student Capstones

Can a Geographic Information System (GIS) be used to analyze and locate precise geographic locations along rivers and creeks that have high potential for placer gold extraction in the Sierra Nevada Mountains, California?


Spacing Units In The Greater Wattenberg Area, Tera Dillon Jun 2013

Spacing Units In The Greater Wattenberg Area, Tera Dillon

Geography and the Environment: Graduate Student Capstones

Horizontal wells are the most commonly drilled wells in the Wattenberg Field, located in Weld County, Colorado. Petroleum engineers have become interested in determining how many horizontal wells can economically be drilled per section in this vertically, well-developed field. Using the Colorado Oil and Gas Conservation Commission’s spacing unit regulations as a guide, a GIS workflow was developed to create the deliverables required for further analysis. Spacing units were created by applying a buffer to horizontal well surveys, and using this buffer to select intersecting quarter-quarter sections. The selected quarter-quarter sections were simplified using the dissolve tool and then spatially …


Blm Riparian Area Management Technical Reference: Using Uas Remotes Sensing Imagery To Assess Proper Functioning Condition Of Riparian-Wetland Areas, Heather Fonda Jun 2013

Blm Riparian Area Management Technical Reference: Using Uas Remotes Sensing Imagery To Assess Proper Functioning Condition Of Riparian-Wetland Areas, Heather Fonda

Geography and the Environment: Graduate Student Capstones

The Bureau of Land Management (BLM) was loaned older military Unmanned Aerial Systems (UAS) and is pioneering their employment for land management applications. Riparian areas make up a small percentage of BLM lands but are some of the most environmentally and economically valuable. Assessments of these riparian areas are required by law. Assessments from UAS imagery could become an important monitoring tool that is cheaper, safer and allows access to previously unreachable areas. This capstone project tests the UAS imagery for conducting riparian proper functioning condition (PFC) and quantitative assessments; and includes a technical reference with an interpretation key and …


Alaska Winter's Relationship To Domestic Violence And Alcohol Abuse, Jennifer Marie Read Jun 2013

Alaska Winter's Relationship To Domestic Violence And Alcohol Abuse, Jennifer Marie Read

Geography and the Environment: Graduate Student Capstones

Alaska is known for its long, dark, cold winter months. Daylight savings time exists to cope with months that have little sunlight, but that still leaves on average, five hours of daylight. Special light bulbs exist to help with the darkness by providing light that tricks the body into thinking it is getting more sun than it really is. As daylight decreases, the weather turns colder; depression, alcohol, and domestic violence begin to rise. Studies show alcohol related crime and domestic violence occur more during the winter months in Alaska. This research paper will analyze the data pertaining to alcohol …


A New View On Ski Maps, Greg Schonberger May 2013

A New View On Ski Maps, Greg Schonberger

Geography and the Environment: Graduate Student Capstones

Traditional ski area trail maps have remained mostly unchanged for many decades. Since the earliest maps were produced, they have shown picturesque panoramic views of the ski mountain nestled in with its the surrounding peaks. Trees individually painted on the slopes, pristine and snow-covered, the runs marked as a winter wonderland. These maps are each an individual work of art, painstakingly created by skilled artists but they are not quality maps. This project will present a new view on the ski area map, creating a more traditional topographic map depicting ski runs, elevation contours, and shaded topography. The project will …


Using Remotely Sensed Data To Detect Tamarisk Along Colorado’S San Miguel River, William E. Johnson May 2013

Using Remotely Sensed Data To Detect Tamarisk Along Colorado’S San Miguel River, William E. Johnson

Geography and the Environment: Graduate Student Capstones

Tamarisk, an invasive tree native to Eurasia, has become widespread in river corridors across the southwestern United States. Accused of excessive water consumption and degradation of native habitats, it has been the target of extensive eradication and restoration efforts. Identifying its ever-changing distribution and extent benefits natural resource managers tasked with planning and prioritizing invasive plant management activities.

The use of GIS tools and remotely sensed data offers the potential to speed and improve our ability to locate tamarisk distributions. This project searches for tamarisk by classifying land cover vegetation (including tamarisk) based on spectral reflectance values from three-band natural …


The Value Of Proximity To External Amenities And Mountain Views In The Metropolitan Denver Residential Housing Market, Tabatha Rose Waldron May 2013

The Value Of Proximity To External Amenities And Mountain Views In The Metropolitan Denver Residential Housing Market, Tabatha Rose Waldron

Geography and the Environment: Graduate Student Capstones

This research examines how natural amenities, such as views of Colorado’s Front Range mountains and proximity to lakes, parks and recreational areas, as well as proximity to community amenities such as hospitals, active wastewater treatment plants, fire and a police stations impact residential housing prices in Adams, Arapahoe and Denver Counties using a hedonic pricing model. Views of the mountains produced the most impact on home sale value in 2000 followed by proximity to a lake of 250 feet. These results demonstrate the importance of environmental amenities to single-family home buyers and can be used to inform parties involved in …


Mobile Gis: An Economical Approach To View And Edit Gis Data, Daniel Faulk May 2013

Mobile Gis: An Economical Approach To View And Edit Gis Data, Daniel Faulk

Geography and the Environment: Graduate Student Capstones

Faulk’s capstone project provides specific instructions for the implementation of the My Maps Editor app that allows the city of Taylorsville, Utah employees and residents the ability to view, create, upload, edit, and share their own geographic data on an iPad or iPhone. The project consists of identifying the city’s GIS (Geographic Information System) needs, researching existing GIS capabilities, selecting and installing an app, and providing instructions for system maintenance. The selected app offers many benefits including practical application, functional capabilities, financial feasibility, time saved, and aid in emergency preparedness.


Enhancing Remote Sensing For Agriculture Using Small Unmanned Aerial Systems: San Diego, Ca, As A Test Case, Colin Kubera May 2013

Enhancing Remote Sensing For Agriculture Using Small Unmanned Aerial Systems: San Diego, Ca, As A Test Case, Colin Kubera

Geography and the Environment: Graduate Student Capstones

The development of small Global Positioning System (GPS) antennas and microprocessors has propelled the advancement of affordable Small Unmanned Aerial Systems (SUASs), which will dramatically expand the remote sensing field, making timely, high-resolution imagery readily available. The low cost and simple operation of SUASs makes them an attractive option for agriculture. Flying a SUAS 400 ft above ground level (AGL) in a flight path that allows for significant image overlap can yield sub- 5cm resolution imagery, which in turn can be mosaicked and used for multispectral imagery analysis. With results rivaling the most advanced commercial imaging sensors, SUASs can be …


Water Efficiency Devices And Conservation Practices, Juan A. Gonzalez May 2013

Water Efficiency Devices And Conservation Practices, Juan A. Gonzalez

Geography and the Environment: Graduate Student Capstones

Southern California has a special and unique Mediterranean climate that is rare and only shared with a few countries around the world. In the last few years, the Southern California region has experienced unpredictable periods of both wet and dry weather, and it is likely that it will continue to experience these types of disruptions as a consequence of climate changes in the future (West Basin Municipal Water District [WBMWD]). Water supply agencies in the region have pressed for strong regulations in order to promote water conservation. The study will focus on a small water agency, Rancho California Water District. …


Using Geographic Information Systems To Select Suitable Columbian Sharp-Tailed Grouse Habitat In Northern Idaho, Jennifer Grew Apr 2013

Using Geographic Information Systems To Select Suitable Columbian Sharp-Tailed Grouse Habitat In Northern Idaho, Jennifer Grew

Geography and the Environment: Graduate Student Capstones

The Columbian sharp-tailed grouse was once the most abundant game bird in the Inland Northwest area. The main reason for their loss was the conversion of their habitat into agricultural lands and timber forests. Several variables were incorporated into a weighted sum tool in ArcGIS using public raster layers for each of three seasons. The results layers were analyzed using the same tool to find the most suitable habitat. Six locations in the county had 50% or better suitability. One location showed 80% or better. The grouse historic range appears to coincide with Palouse prairielands in Benewah County. Further research …


Colorful Colorado: The Relationship Between Demographics And The Changing Political Color Of Colorado, Leslie Forbes Apr 2013

Colorful Colorado: The Relationship Between Demographics And The Changing Political Color Of Colorado, Leslie Forbes

Geography and the Environment: Graduate Student Capstones

This research will address the individual relationships between five demographic variables and the changing political color of Colorado (from a “red” state to a “blue” state). The variables addressed are age, education, income, gender, and the Hispanic[1] population growth. Building on recent literature reviews for Colorado’s political trends, I will attempt to show the relationships of the five variables and voting behavior. This data will then be statistically analyzed through Geographic Information Systems (GIS) to determine what relationship strength, weak or strong, exists between the demographic variables. My goal for this research is to determine which of the five …


Contemporary Problems Of Gis Interoperability: A Review Of Gis Integration With Current Technology, Tim Jones Apr 2013

Contemporary Problems Of Gis Interoperability: A Review Of Gis Integration With Current Technology, Tim Jones

Geography and the Environment: Graduate Student Capstones

This paper examines GIS interoperability with three current technology trends: Open Source, Smart Devices and Web 2.0. It firsts takes a look at both varying definitions of interoperability as well as different types of interoperability. The author samples a variety of GIS formats with examples of each of the said technologies as a way to measure the current state of GIS interoperability with current technological trends. GIS functions such as viewing, editing and analyzing spatial data are used as a scoring matrix to determine the level of interoperability. The methodology of measure focuses on a technical level of interoperability and …


Colorado Front Range Parks Location Mapping Website, Leah Alvarado Mar 2013

Colorado Front Range Parks Location Mapping Website, Leah Alvarado

Geography and the Environment: Graduate Student Capstones

With current technology, using location based services has become easier than ever. There are services that can help a person find a home, save money, or even find a bathroom. In Colorado, parks are managed by the park and recreation department of a city, town, county, or by a district. Depending on the city, information on the parks that they service comes in different formats and information varies. Some department have online maps others have a map in a portable document format, and some offer no mapping but, a list of parks. Finding a park with consistent data formats and …


Baseline Study Of The Relationship Between Green Space And Age, Chris Schulze Mar 2013

Baseline Study Of The Relationship Between Green Space And Age, Chris Schulze

Geography and the Environment: Graduate Student Capstones

Current research on green space and human health is spread among many academic disciplines and is growing. To aid researchers and local governments in understanding the relationship between the two, this study presents a baseline analysis of the spatial relationship between green space and age. It considers how a city’s population is distributed around green space and looks at spatial and statistical patterns related to age and location. This study identifies a gap in current research and looks at green space and age in a geographic manner. The findings of this literature review and analysis provide researchers with another way …


Mobility And Aging In Denver, Colorado: Travel Behavior, Mobility Barriers, And Perceptions Of Transit, Sylvia Arriaga Brady Jan 2013

Mobility And Aging In Denver, Colorado: Travel Behavior, Mobility Barriers, And Perceptions Of Transit, Sylvia Arriaga Brady

Electronic Theses and Dissertations

The number of seniors in the U.S. today is growing rapidly because of longer life expectancies and the aging Baby Boomer generation. This age groups' travel behavior will have substantial impacts on transportation, economics, safety, and the environment. This research used a mixed-methods approach to address issues of mobility and aging in Denver, Colorado. A quantitative approach was used to answer broad questions about travel behavior and the effects of age, gender, work status, disability, residential location and socio-economic status on mobility. Qualitative interviews with seniors in the Denver metro area were conducted to identify barriers to mobility, decision-making processes …


The Impact Of Transit Oriented Development On The Travel Behaviors Of Workers In Denver, Colorado, Gregory J. Kwoka Jan 2013

The Impact Of Transit Oriented Development On The Travel Behaviors Of Workers In Denver, Colorado, Gregory J. Kwoka

Electronic Theses and Dissertations

To combat unsustainable transportation systems characterized by reliance on petroleum, polluting emissions, traffic congestion and suburban sprawl, planners encourage mixed use, densely populated areas that provide individuals with opportunities to live, work, eat and shop without necessarily having to drive private automobiles to accommodate their needs. Despite these attempts, the frequency and duration of automobile trips has consistently increased in the United States throughout past decades. While many studies have focused on how residential proximity to transit influences travel behavior, the effect of workplace location has largely been ignored.

This paper asks, does working near a TOD influence the travel …


Correlation Between Literacy Rates In Africa And Latin America And Economic Stability, Shawn Jordan Jan 2013

Correlation Between Literacy Rates In Africa And Latin America And Economic Stability, Shawn Jordan

Geography and the Environment: Graduate Student Capstones

Literacy rates in Africa and Latin America are on different ends of the spectrum. Africa is home to some of the poorest countries in the world and Latin America is not too far behind. Literacy rates generally correlate to wealth as a country. The plights of Africa and Latin America are a no different. In general, Africa has some of the lowest literacy rates in the world and has been the place for horrific fighting for decades. This epidemic has hit the women and children especially hard. Women in Africa have an illiteracy rate of 50% (allafrica.com 2010). This is …


Gis Prototype Modeling Of Landslide Susceptibility And Risk Perception - Aguas Calientes (Machu Picchu Pueblo), Peru: An Exploratory Approach, Alicia Felice Tyson Jan 2013

Gis Prototype Modeling Of Landslide Susceptibility And Risk Perception - Aguas Calientes (Machu Picchu Pueblo), Peru: An Exploratory Approach, Alicia Felice Tyson

Geography and the Environment: Graduate Student Capstones

Tourism is an increasingly important and developing sector of the Peruvian economy and the country is fast-tracking development to accommodate an influx of tourists, reportedly over 1.8 million/year. Situated in the southwest region of Peru, Aguas Calientes (Machu Picchu Pueblo) continues to develop infrastructure to keep pace with this burgeoning tourism industry. Regional geology and hydrology are importation factors influencing the ability to accommodate tourism in Aguas Calientes. Located at the confluence of three rivers, the town is also situated in a watershed with high return intervals for flooding and mass wasting triggered by the sudden, intense rainfall characterizing the …


Inter-Species Interactions: Effects Of Spatial Proximity Of Breeding Burrowing Owls (Athene Cunicularia) And Mountain Plovers (Charadrius Montanus) On Mountain Plover Nest Success, Lindsey Messinger Nov 2012

Inter-Species Interactions: Effects Of Spatial Proximity Of Breeding Burrowing Owls (Athene Cunicularia) And Mountain Plovers (Charadrius Montanus) On Mountain Plover Nest Success, Lindsey Messinger

Geography and the Environment: Graduate Student Capstones

Predator-prey interactions are complex and direct interactions between predator-prey pairs are difficult to distinguish due to direct and indirect effects of additional predator-prey interactions. While most studies evaluating the impact of predators on prey concentrate on consumption (mortality of prey caused by a predator), there are a variety of interactions that take place between predators and prey that may not result in mortality. These in direct impacts of predation have been found to influence micro- and macro- habitat use, time allocation patterns, species distribution, population growth, and species interactions and can be just as strong or stronger than consumptive effects.


Mapping Sustainability: City Of Fife Parks And Recreation, Tonya Elliott Nov 2012

Mapping Sustainability: City Of Fife Parks And Recreation, Tonya Elliott

Geography and the Environment: Graduate Student Capstones

Sustainability is based on a simple principle: Everything that we need for our survival and well-being depends, either directly or indirectly, on our natural environment. Sustainability creates and maintains the conditions under which humans and nature can exist in productive harmony, that permits fulfilling the social, economic, and other requirements of present and future.


Enterprise Gis & Architecture, Nevin Gaudet Jun 2012

Enterprise Gis & Architecture, Nevin Gaudet

Geography and the Environment: Graduate Student Capstones

Enterprise GIS solutions are becoming more attractive to companies to implement because of the ability to leverage system of record portals. Information is largely regarded as a company’s competitive advantage enabling organizational capability to operate and build capital and equity within a business. And with good reason large amounts of data and information are difficult to collect and organize within a digital framework. Building a GIS enterprise is a solution for data organization and management. Workflows must be in place to collect, process, calculate, and store data with high regard to timeliness and accuracy. Business decisions are made based on …


Access To Recreation In San Francisco, Ca, Robert Graham Jun 2012

Access To Recreation In San Francisco, Ca, Robert Graham

Geography and the Environment: Graduate Student Capstones

This research presents an assessment of the equity of access to public recreation facilities among communities of San Francisco, California using Geographic Information Systems (GIS), database programming, and open sources of data. Urban parks and the recreation facilities contained therein are valuable public resources that contribute to healthy and well-adjusted citizenry and have significant positive impacts on the shared urban experience. This project utilizes the network analysis and spatial processing capacities of GIS alongside web technologies and open data sources to delineate pedestrian and transit service areas around each of over 300 documented recreation facilities and community centers in the …


Urban Transition Of Races In The Denver Metro Area, Scott Kilker Mar 2012

Urban Transition Of Races In The Denver Metro Area, Scott Kilker

Geography and the Environment: Graduate Student Capstones

The racial segregation of the primary racial groups, African-American, Asian, Latino and White, residing within the Denver metropolitan five-county area is analyzed using a Geographic Information System. The study uses census defined block groups to measure racial population within the study area as input to analysis methods that provide insight to the transition of racial groups within the Denver metropolitan area. Markov chain analysis is used to compute the probability that the ratio of a block group of a race will change. The Monte Carlo method is then applied using the probabilities to predict what the segregation in the Denver …


Volumetric Pipeline Environment Analysis: A Methodology For Creating 3d Data Suitable For Pipeline Environment Risk And Mitigation Products, Anthony Timpson Mar 2012

Volumetric Pipeline Environment Analysis: A Methodology For Creating 3d Data Suitable For Pipeline Environment Risk And Mitigation Products, Anthony Timpson

Geography and the Environment: Graduate Student Capstones

Pipeline risk assessment GIS is constantly seeking to improve the tools and methodologies of data analysis to incorporate more world details. The need for complex 3D systems modeling is expanding as GIS takes a main stage in mapping the infrastructure and environment of medium scale, vertically complex, pipeline systems. Pipeline environments must be specially tailored to suit the data analysis capabilities of ERSI ArcGIS 10. Model based automation facilitates the conversion of data types and preparation of analysis results. The methodology presented is one avenue of possible development in generating a greater level of detail in intricate medium scale pipeline …


Maputopia: An Improvement Over Existing Census Mapping Applications, Daniel Trone Mar 2012

Maputopia: An Improvement Over Existing Census Mapping Applications, Daniel Trone

Geography and the Environment: Graduate Student Capstones

The United States Census public data portal and other existing demographic mapping applications do a suboptimal job of serving two prime data user groups; the casual data user, and the GIS data user. The Census Bureau in particular has produced a user-unfriendly product with a steep learning curve. In response to the lack of an existing platform which could efficiently handle common user requests, the author has created MapUtopia.com. MapUtopia is an interactive census data mapping application which allows for quick user access to commonly requested demographic data, and allows for user download of that data in the commonly utilized …