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Articles 1 - 30 of 31
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Assessment Of Vegetation Response To Wildfire At Bandelier National Monument, New Mexico: Case Study Of The Las Conchas Fire, Gladys Valentin-Gonzalez
Assessment Of Vegetation Response To Wildfire At Bandelier National Monument, New Mexico: Case Study Of The Las Conchas Fire, Gladys Valentin-Gonzalez
Geography ETDs
In the past couple of decades, there has been an increase in the occurrence of wildfire events in the United States. The U.S. Forest Service estimates that over 73,000 wildfires on average occur annually in the U.S., burning about 7.3 million acres of land. Bandelier National Monument, in northern New Mexico, has been affected by several wildfires in the past 40 years, one of the most recent being the Las Conchas Fire in 2011, which burned over 60,700 hectaresin Bandelier National Monument and Valles Caldera National Preserve. This research explores a remote-sensing based assessment of vegetation response to and recovery …
Seasonal Resource Selection And Habitat Treatment Use By A Fringe Population Of Greater Sage-Grouse, Rhett Boswell
Seasonal Resource Selection And Habitat Treatment Use By A Fringe Population Of Greater Sage-Grouse, Rhett Boswell
All Graduate Plan B and other Reports, Spring 1920 to Spring 2023
Movement and habitat selection by Greater Sage-grouse (Centrocercus uropasianus) is of great interest to wildlife managers tasked with applying conservation measures for this iconic western species. Current technology has created small and lightweight GPS (Global Positioning Systems) transmitters that can be attached to sage-grouse. Using GIS software and statistical programs such as Program R, land managers can analyze GPS location data to assess how sage-grouse are geospatially interacting with their habitats. Within the Panguitch Sage-Grouse Management Area (SGMA) thousands of acres of land have been restored or manipulated to enhance sage-grouse habitat; this usually involves removal of pinyon pine …
A Reconciled Estimation Of The State Of Cryospheric Components In The Southern Andes And California Using Geospatial Techniques, Pushkar Inamdar
A Reconciled Estimation Of The State Of Cryospheric Components In The Southern Andes And California Using Geospatial Techniques, Pushkar Inamdar
Theses and Dissertations
Glaciers are the essential source of fresh water not only to human sustenance, but it is also vital for all lifeforms on earth. Glaciers are also key components in understanding rapid changes in climate. This makes understanding of glacier mass, extent, and overall state essential. In this dissertation, the objective was to analyze the state of snow and ice masses in the mid (California) and low latitude (Chile/Argentina) western American regions using geospatial technology. This study also analyzed the effects of anomalies in snow mass on the regional agricultural practices in California’s Central Valley. In the Southern Andes, the digital …
A Geospatial Investigation Of The Potential For Inter-Aquifer Communication In Shelby County, Tennessee: A Multi-Scale Spatial Dependency Model, Andrew Barnett Murphy
A Geospatial Investigation Of The Potential For Inter-Aquifer Communication In Shelby County, Tennessee: A Multi-Scale Spatial Dependency Model, Andrew Barnett Murphy
Electronic Theses and Dissertations
The upper-Claiborne confining unit overlies the Memphis aquifer in Shelby County, Tennessee. Hydrogeologic windows are locations where clay intervals are thin or absent within the confining unit, resulting in localized vertical recharge. Previous work has not been geostatistically focused. In this study, 430 borehole geophysical logs were analyzed. The objectives were to: 1) capture and analyze exisiting well log data in a geodatabase 2) utilize geostatisitical modeling at a variety of scales 3) integrate well log data with historic water-table elevation trends and 4) produce multi scaled maps that illustrate hydrostratigraphic trends in terms of inter-aquifer communication. Geostatisitical ordinary kriging …
A Summer At Azavea Working With Nonprofit Organizations: The Summer Of Maps Fellowship, Sarah Gates
A Summer At Azavea Working With Nonprofit Organizations: The Summer Of Maps Fellowship, Sarah Gates
International Development, Community and Environment (IDCE)
This report details my experience as a Summer of Maps Fellow at Azavea during June 2017 to August 2017. As a Summer of Maps Fellow I worked with nonprofit organizations, the Fair Tech Collective and the World Resources Institute, on two geospatial analysis projects. For the Fair Tech Collective I analyzed data on refinery flaring pollution, air toxin concentrations, and sensitive receptor populations to produce a series of maps and infographics detailing the impacts of petrochemical pollution in the San Francisco Bay Area. For the World Resources Institute I used data-driven methods to analyze conservation efforts in the Central African …
Greening The Gateway Cities: Summer Internship With The Clark University Human Environment Regional Observatory (Hero) And Massachusetts Department Of Conservation And Recreation (Dcr), Zhiwen Zhu
International Development, Community and Environment (IDCE)
This report provides a detailed account of my internship experience with the Clark University Human-Environment Regional Observatory (HERO) and Massachusetts Department of Conservation and Recreation (DCR) in the summer of 2017. This internship concerns the urban tree health assessment in three ‘Greening the Gateway’ cities in Massachusetts. During the internship, I conducted tree survey field work, database management, mapping, tree survey data analysis and urban tree plantation benefits microclimate simulation. During the internship I worked with the professors and students at Clark University and University of Massachusetts, Amherst, and the staff from Department of Conservation and Recreation (DCR), Worcester Tree …
Mapping The Landscape For Archaeological Detection, Preservation, And Interpretation: A Case Study In High Resolution Location Modeling From The Blue Mountains Of Northeastern Oregon, Trent Skinner
UNLV Theses, Dissertations, Professional Papers, and Capstones
Archaeological location modeling (ALM) is an important tool in most survey strategies, and has contributed substantially to economizing efforts to locate and characterize the archaeological record. The increasing availability of high resolution (<3m) airborne light detection and ranging (lidar) data has the potential to refine the application and ultimately the role of ALM. This research tests the precision and accuracy gained by incorporating lidar derived data into an ALM. The site records and other environmental data used in this study were all generated over the last four decades by the resource specialists of the Malheur National Forest. The Weights-of-Evidence (WofE) probability method (Bonham-Carter 1994) was used to produce two ALMs; one based on a 10m digital elevation model (DEM) created from satellite imaging, and the second from a 3m resolution lidar derived DEM. Independent variables (e.g., slope, aspect, distance to water, etc.) commonly used in ALM were largely replaced by index variables (e.g., slope position classification, topographic wetness index, etc.). The final models were classified into areas of high, medium, and low archaeological potential, then cross-validated against a reserved random dataset. Models were then compared using the Kvamme gain statistic and site to area frequency ratio. The 3m model demonstrated a significant improvement over the results obtained from the 10m model and the current probability model used in the study area. A number of factors including model resolution, statistical methodology, and the character of the independent and dependent variables all contributed to the increase in precision and accuracy. The incremental improvement in modeling efficiency demonstrated here will create time and cost saving in the management and preservation of cultural resources, and ultimately contribute to a better understanding of patterns of past human land use.
Evaluating The Ecological Status Of The Introduced Nile Monitor (Varanus Niloticus) In Florida: Forecasting Presence And Population Expansion Using Computational Geographic Information Systems, Noah G. Cohen
HCNSO Student Theses and Dissertations
The Nile monitor (Varanus niloticus) is a large, carnivorous lizard that has become a notorious invasive species in Florida, USA. Initially released in the 1980s from the pet trade, the species has since established at least three breeding populations and spread throughout much of southern Florida. While current control efforts have failed to eradicate V. niloticus, it is important to attain a better understanding of its invasive dynamics to guide and inform better control strategies. In this study, available georeferenced records of V. niloticus in Florida were compiled and linked to a habitat classification map to evaluate ecotype preferences. Factored …
Geographic Information Systems (Gis) And Predictive Modeling Of Body Disposal Sites, Annemarie Catherine Gundel
Geographic Information Systems (Gis) And Predictive Modeling Of Body Disposal Sites, Annemarie Catherine Gundel
Masters Theses
Homicide victims are often discovered by accident or located through witness testimony, both of which are unreliable methods. Moving a victim’s body from the scene of the crime to a secondary disposal site may further complicate their discovery, delaying recovery, identification, and evidence collection. Homicides are exponentially more difficult to investigate, solve, and prosecute without a body. In the medicolegal context, a body disposal site prediction model is an alternative to relying on luck or witness testimony. Predictive models were created using body disposal data collected from the Office of the Chief Medical Examiner (OCME), Connecticut, to explore the feasibility …
Assessing Phosphorus Sources With A Gis-Based Phosphorus Risk Index In A Mixed-Use, Montane Watershed, Josiah A. Johns
Assessing Phosphorus Sources With A Gis-Based Phosphorus Risk Index In A Mixed-Use, Montane Watershed, Josiah A. Johns
Theses and Dissertations
Elevated phosphorus (P) loading of freshwater lakes and reservoirs often results in poor water quality and negative ecological effects. Critical source areas (CSA) of P in the watershed can be difficult to identify and control. A useful concept for identification of a CSA is the P risk index (P Index) that evaluates the P risk associated with distinct source and transport pathways. The objectives of this study were to create a GIS model that adapts the Minnesota (MN) P Index for use at the watershed scale in a mixed-use, mountain environment, and to evaluate its effectiveness relative to field-based assessment. …
Geospatial And Negative Binomial Regression Analysis Of Culex Nigripalpus, Culex Erraticus, Coquillettidia Perturbans, And Aedes Vexans Counts And Precipitation And Land Use Land Cover Covariates In Polk County, Florida, Joshua P. Wright
USF Tampa Graduate Theses and Dissertations
Although mosquito monitoring systems in the form of dry-ice bated CDC light traps and sentinel chickens are used by mosquito control personnel in Polk County, Florida, the placement of these are random and do not necessarily reflect prevalent areas of vector mosquito populations. This can result in significant health, economic, and social impacts during disease outbreaks. Of these vector mosquitoes Culex nigripalpus, Culex erraticus, Coquillettidia perturbans, and Aedes vexans are present in Polk County and known to transmit multiple diseases, posing a public health concern. This study seeks to evaluate the effect of Land use Land cover …
Application Of Coastal And Marine Ecological Classification Standard (Cmecs) To Remotely Operated Vehicle (Rov) Video Data For Enhanced Geospatial Analysis Of Deep Sea Environments, Caitlin A. Ruby
Theses and Dissertations
The Coastal and Marine Ecological Classification Standard (CMECS) provides a comprehensive framework of common terminology for organizing physical, chemical, biological, and geological information about marine ecosystems. Federally endorsed as a dynamic content standard, all federally funded data must be compliant by 2018; however, applying CMECS to deep sea datasets and underwater video have not been extensively examined. The presented research demonstrates the extent to which CMECS can be applied to deep sea benthic habitats, assesses the feasibility of applying CMECS to remotely operated vehicle (ROV) video data in near-real-time, and establishes best practices for mapping environmental aspects and observed deep …
Gis-Based Evaluation Of Landslide Susceptibility For Eastern Tennessee, Sara Ann Smith
Gis-Based Evaluation Of Landslide Susceptibility For Eastern Tennessee, Sara Ann Smith
Theses and Dissertations
The Appalachian Mountains in eastern Tennessee are known for landslides, and landslides are reported to cause millions of dollars of damage. To aid in the estimation of future susceptibility, geographic information systems was used to perform a logistic regression, to identify landslides in eastern Tennessee. Landslide model results validated using Kold cross validation. The model results suggest that the environmental variables slope, soil, landcover/vegetation, and distance to roads were significant factors related to landslide susceptibility. The susceptibility map showed that 86.8% of urban areas in eastern Tennessee were at highest susceptibility for landslides, possibly due to lower amounts of landcover. …
Longitudinal Awareness: A Study Of Vulnerability To Flooding In Polk County, Iowa, Kerri A. Dickey
Longitudinal Awareness: A Study Of Vulnerability To Flooding In Polk County, Iowa, Kerri A. Dickey
USF Tampa Graduate Theses and Dissertations
Flooding has become a problem of national proportion and many scholars have started to take note of the human impacts in this area. This study will focus on the social vulnerability framework in tandem with the environmental justice theoretical frameworks being applied to Polk County Iowa so that information can be added to the body of works within a Midwestern U.S. context. This research will contribute to the current geographical knowledge in natural hazards, environmental justice, and vulnerability to flood hazards. Taking into consideration the scarcity of county or sub-county studies in the Midwest U.S. measuring spatial tendencies in hazards …
Understanding The Past, Present, And Future Of Land Conservation In South Carolina, Nicole Berson
Understanding The Past, Present, And Future Of Land Conservation In South Carolina, Nicole Berson
Graduate Theses
Urbanization poses a significant challenge for many ecosystems in the United States. However, monitoring its impacts requires extensive data and this lack of up-to-date information makes understanding the impacts of urbanization difficult to assess. One area that has seen tremendous growth is the Interstate 85 (I-85) corridor between Charlotte, NC and Atlanta, GA, which is known as “The Boom Belt.” Unfortunately, due to limited resources from conservation and state agencies, data on land use change and its impacts in this area have not been updated since the early 1990s. To investigate how urbanization is impacting this region, I conducted a …
The Fight Against Botanical Invaders: Summer Internship With The Montana Conservation Corps And The U.S. Forest Service, Bryan S. Buttigieg
The Fight Against Botanical Invaders: Summer Internship With The Montana Conservation Corps And The U.S. Forest Service, Bryan S. Buttigieg
International Development, Community and Environment (IDCE)
This paper aims to synthesize and reflect upon my internship with the Montana Conservation Corps, and the U.S. Forest Service during the summer of 2016. The primary responsibilities as an intern under the USFS’s Vegetation Manager included eradicating and monitoring invasive weeds within the Hebgen Lake Ranger District, in West Yellowstone, MT. I gained a wealth of knowledge on how invasive plants take control of landscapes throughout Montana specifically. This opportunity provided me with the chance to develop both hands-on and GIS-based conservation efforts. The following chapters review my summer internship by diving deeper into the structural organization of the …
Data And Geometry; Model Building At Calthorpe Analytics, Samuel M. Upton
Data And Geometry; Model Building At Calthorpe Analytics, Samuel M. Upton
International Development, Community and Environment (IDCE)
This report documents my Summer 2016 internship with Calthorpe Analytics, a Berkeley CA based urban planning firm. Calthorpe Analytics specializes in scenario development for planning, modeling, and plan evaluation for government and municipal clients. The primary responsibility of my internship was model development and refinement using advanced spatial analytics working in the Python programming language. The internship was extremely successful: it gave me a great opportunity to strengthen my open source GIS skillset, deepen my understanding of data science, and vastly improve my geospatial programming skillset. It also gave me a chance to apply advanced geospatial modeling and spatial statistics …
Geoscientists-In-The-Park Summer Internship Mapping Shoreline Change With The National Park Service, Michael P. Endicott
Geoscientists-In-The-Park Summer Internship Mapping Shoreline Change With The National Park Service, Michael P. Endicott
International Development, Community and Environment (IDCE)
This project paper details the activities carried out as a Geologist/GIS Specialist in the Gateway National Recreation Area as a part of the Geoscientists-In-The-Park internship program. The focus of this position was on supporting the geomorphological monitoring efforts of the National Park Service. This was accomplished through a combination of field data collection, GIS analysis, report writing, and project work. By the end of the internship, substantial progress was made to the formation of Gateway’s Annual 1D and 2D report for 2015-2016, field data were collected for the 2016 summer season, changes in geomorphology were explored and summarized for the …
Location-Based Modeling And Statistics Internship With Location, Inc., Yixuan Wang
Location-Based Modeling And Statistics Internship With Location, Inc., Yixuan Wang
International Development, Community and Environment (IDCE)
In the summer 2016, I had the honor to work as a GIS & statistics intern at Location, Inc. It is a Software as a Service (SaaS) private company that builds and delivers location-based big data, analytics, tools, and services. The company’s mission is to create the best location-based technologies to help businesses make well-informed decisions (Location, Inc.). I was chosen by the company’s CEO, Dr. Andrew Schiller, who is also a Clark Alumnus. During the internship period, I worked in the data science team supervised by Jonathan Glick, and my main responsibilities were handling geographical and statistical …
Comparison Of Saturated Hydraulic Conductivity Using Geospatial Analysis Of Field And Ssurgo Data For Septic Tank Suitability Assessment, Joshua Randall Weaver
Comparison Of Saturated Hydraulic Conductivity Using Geospatial Analysis Of Field And Ssurgo Data For Septic Tank Suitability Assessment, Joshua Randall Weaver
All Theses
Saturated hydraulic conductivity (Ksat) is a soil property linked to ecosystem services and it is often used in septic tank suitability determination at various scales. Field and laboratory measurements of Ksat and septic tank suitability are time-consuming and expensive. Soil Survey Geographic Database (SSURGO) data are available for the United States, but limitations of using SSURGO data for Ksat and septic suitability determination are not fully understood. The objectives of this study were to quantify and compare depth to limiting layer, thickness of limiting layer, and Ksat values for a 147-hectare Cornell University Willsboro Research Farm, located in upstate New …
Beach Form, Change, And Mangrove Interactions Along Galleon Fish Sanctuary, South Coast Jamaica, Kayla Marie Geier
Beach Form, Change, And Mangrove Interactions Along Galleon Fish Sanctuary, South Coast Jamaica, Kayla Marie Geier
MSU Graduate Theses
Shoreline erosion is a problem around the world that is getting worse as sea level rises and populations expand into coastal areas. It is important to identify areas at the greatest risk for shoreline erosion so environmental planners will have the knowledge and time to mitigate potential resource losses. The Galleon Fish Sanctuary in St. Elizabeth Parish is a 6 km stretch of shoreline along the south coast of Jamaica composed of mangrove forests, sand beaches, and coral reefs. This study assesses shoreline form and composition in the sanctuary in order to provide new information about the relationships between beach …
Comparing Ssurgo Data Versus Geospatial Field Measurements To Estimate Soil Texture And Infiltration Rate Classes In Glaciated Soils, Stephen Austin Cole
Comparing Ssurgo Data Versus Geospatial Field Measurements To Estimate Soil Texture And Infiltration Rate Classes In Glaciated Soils, Stephen Austin Cole
All Theses
The infiltration rate (IR) of water is a key soil property related to hydrological processes, soil health and ecosystem services. However, detailed measurements of IR in the field and/or laboratory are labor-intensive and expensive to perform. Soil judging in the field provides a rapid and inexpensive method to estimate IR classes based on soil texture, soil organic carbon/matter and soil structure. The objectives of this study were to classify and compare soil texture and IR for the A horizon across the 147-ha Cornell University Willsboro Research Farm using the Soil Survey Geographic (SSURGO) database and field-based measurements. Soil texture was …
Developing A Flexible Disaster Relief Supply Chain Model, Eric Hoffman
Developing A Flexible Disaster Relief Supply Chain Model, Eric Hoffman
Doctoral Dissertations
Archival abstract submitted
Revising A Habitat Suitability Model For Spotted Turtles (Clemmys Guttata) In Upstate New York, Caitlin Dailey
Revising A Habitat Suitability Model For Spotted Turtles (Clemmys Guttata) In Upstate New York, Caitlin Dailey
Theses
In order to protect threatened and endangered species, their habitat needs to be adequately documented and assessed for conservation planning. The utilization of mapping programs such as ArcGIS can help researchers in determining the most optimal sites for a particular species in a given area. This research revises a previous habitat suitability model by Correa-Berger (2007) for the spotted turtle (Clemmys guttata) in nine counties of upstate New York. Using the same initial parameters for the creation of the seed sites and habitat requirements for spotted turtles that Correa-Berger used in his 2007 analysis, the model utilized updated Land Use/Land …
The Effect Of Site Characteristics On The Reproductive Output Of Lesser Celandine (Ranunculus Ficaria), Justin P. Kermack
The Effect Of Site Characteristics On The Reproductive Output Of Lesser Celandine (Ranunculus Ficaria), Justin P. Kermack
ETD Archive
Ranunculus ficaria L., an ephemeral perennial invasive plant brought over from Europe, is becoming widespread throughout the Northeastern United States. This herbaceous buttercup is able to create extensive dense mats that limit native species growth. Taking advantage of an early growing season and rapid reproduction rates, this species can create dense monocultures, which threatens native communities and ecosystems. Elimination of native spring ephemerals results in decreased biodiversity. A better understanding of how R. ficaria responds to site characteristics is needed to prioritize management efforts toward high-risk sites.
Ranunculus ficaria abundance and reproductive output (seed, bulbil and tuber production rates) were …
Geospatial Analysis Of The Global Supply Chain And Transportation Infrastructure Considering Extreme Weather, Climate, And Sustainable Energy Policies, Craig Freeman Davis
Geospatial Analysis Of The Global Supply Chain And Transportation Infrastructure Considering Extreme Weather, Climate, And Sustainable Energy Policies, Craig Freeman Davis
Electronic Theses and Dissertations
The basis of this research is an investigation into the demand, costs, and emissions of a container freight shipping route from South America to the Port of Charleston, South Carolina. Ports and shipping routes play the most crucial role in the global supply chain, allowing people to maintain their standard of living. Once ashore, the delivery routes to five major metropolitan market cities were optimized for the lowest shipping costs for road and freight rail. The costs of transportation are a major factor in the ultimate price of consumer goods and thus must be minimized in the transportation process. Increasing …
Using Geospatial Analysis For High School Environmental Science Education: A Case Study Of The Jane Goodall Institute's Community-Centered Conservation Approach, Madison G. Vorva
Using Geospatial Analysis For High School Environmental Science Education: A Case Study Of The Jane Goodall Institute's Community-Centered Conservation Approach, Madison G. Vorva
Pomona Senior Theses
Given my experiences as a young conservation advocate, I saw a need to teach students the importance of interconnectedness, cultural awareness and systems-thinking skills through a spatial lens. I believe these skills are required for holistic, equitable and sustainable conservation decision-making in local and international contexts. This thesis uses geospatial tools to teach conservation ecology vocabulary and concepts from high school environmental science curriculum in two online resources. The purpose of my lesson plan is to show students how conservationists address complex conservation and land-use challenges using the Jane Goodall Institute’s community-centered conservation approach as a case-study. My hope is …
A Landscape Of Water And Waste: Heritage Legacies And Environmental Change In The Mesabi Iron Range, John Baeten
A Landscape Of Water And Waste: Heritage Legacies And Environmental Change In The Mesabi Iron Range, John Baeten
Dissertations, Master's Theses and Master's Reports
This dissertation explores the intersection between mining technology, industrial heritage, and environmental history, using iron mining in the Mesabi Range of the Lake Superior Iron District as its core case study. What impact did technological shifts in iron mining and ore processing have on the environment of the Lake Superior basin? How did the environmental changes wrought from low-grade iron ore mining and processing, such as the expansion of open-pits and the production of tailings, affect different communities in Minnesota’s Mesabi Range? And finally, how have the environmental legacies of iron mining been remembered and memorialized, or ignored and forgotten?
Evaluating The Potential Of A Geospatial/Geostatistical Methodology For Locating Rain-Derived Infiltration And Inflow Into Wastewater Treatment Systems In The Minneapolis/St. Paul Metropolitan Area, Minnesota, Usa, Vinson Aaron Williams
All Graduate Theses, Dissertations, and Other Capstone Projects
A significant issue facing municipal wastewater treatment infrastructure (WWTI) is how to manage infiltration and inflow (I/I). I/I of rain and ground water permeate into WWTI after precipitation events, periods of groundwater table rise, and percolation from surrounding surface waters. This can create discharges above the infrastructure's flow capacity, increase costs for processing the wastewater and add undesired stress to aging wastewater networks. In an attempt to assess this problem cost and time inefficient approaches have commonly been applied. This study utilizes a new and more radical methodology to try and make WWTI management more efficient. This study applies ArcGIS …
Developing A Gis Tool For Infinite Slope Stability Analysis (Gis-Tissa), Jonathon Sanders
Developing A Gis Tool For Infinite Slope Stability Analysis (Gis-Tissa), Jonathon Sanders
Dissertations, Master's Theses and Master's Reports
The Probabilistic Infinite Slope Analysis model (PISA-m) is a widely used computer program that uses infinite slope equations to calculate the spatially varying Factor of Safety of slopes. ESRI’s ArcGIS software and accompanying geoprocessing tools have become a mainstay in spatial data processing, and received full support for Python with the release of version 10. With many of the geoprocessing tools now available as a Python function, the software can be used for physics-based spatial landslide hazard analysis. A model that mimics PISA-m and its processing of normally distributed soil properties was created using the Python utility as a tool …