Physical and Environmental Geography Commons^™

Análisis De Los Impactos Socio-Ambientales De Las Carretera Propuesta Trocha Uc-105 Entre Nuevo Italia Y Puerto Breu, Ucayali, Perú, M. R. Place *, E. Zizzamia, D. S. Salisbury, V. Galati, S. Spera

Conference Presentations and Posters

A construção de estradas é cada vez mais promovida nas fronteiras compartilhadas pelo Peru e pelo Brasil, apesar de uma compreensão incompleta dos impactos socioambientais da infraestrutura de transporte na região. As estradas amazônicas geralmente se expandem informalmente, sem processo oficial do governo, consulta prévia das populações indígenas e declarações de impacto ambiental. A expansão das estradas na Amazônia também freqüentemente segue um ciclo de feedback progressivo, com novas estradas não planejadas gerando caminhos ilegais de extração de madeira e expansão agrícola que, por sua vez, expande e formaliza os sistemas de estradas. Um sistema de estradas em expansão está …

Building A Long-Time Series For Weather And Extreme Weather In The Straits Settlements: A Multi-Disciplinary Approach To The Archives Of Societies, Fiona Williamson

Research Collection School of Social Sciences

In comparison to the Northern Hemisphere, especially Europe and North America, there is a scarcity of information regarding the historic weather and climate of Southeast Asia and the Southern Hemisphere in general. The reasons for this are both historic and political, yet that does not mean that such data do not exist. Much of the early instrumental weather records for Southeast Asia stem from the colonial period and, with some countries and regions changing hands between the European powers, surviving information tends to be scattered across the globe making its recovery a long and often arduous task. This paper focuses …

Sea-Level Rise And Settlement At Ta’Ab Nuk Na, Belize: Analyses Of Marine Sediment From The I-Line, 4m Transect, Conner B. Flynt

LSU Master's Theses

The ancient Maya of Mesoamerica created a culture with writing, religion, and vast trade networks. These trade networks are evident on the southern coast of Belize, where archaeologists have found sites dedicated to salt making. One of these sites, Ta’ab Nuk Na, was the subject of this thesis. Sediment and charcoal samples were collected from this site by the Underwater Maya Research Group led by Heather McKillop and E. Cory Sills. For my thesis research, I subjected these samples and components within them to loss-on ignition, radiometric dating, and microscopic analysis. Loss-on ignition was used to ascertain organic material percentage …

Barriers To Post-Secondary Success, Douglas Swanson, Najeana Henderson, Maritza Sloan

Dissertations

This study reviews factors that prior studies have identified or failed to consider as barriers to post-secondary success. The three main areas include academic success for Latinx students after high school, organizational systems and their impact on African-American students’ postsecondary readiness, and what workers think of their high school education with regards to career preparedness.

Five factors are identified as major barriers for Latinx students to continue in a higher education system. A survey of former students from Saint Louis, Missouri, and Dallas, Texas, metroplex area identified 56 Latinx students that participated in an initial survey. This led to a …

Ecological Risk Assessment Of Managed Relocation As A Climate Change Adaptation Strategy, Aviv Karasov-Olson, Mark W. Schwartz, Julian D. Olden, Sarah Skikne, Jessica J. Hellmann, Sarah Allen, Christy Brigham, Danielle Buttke, David J. Lawrence, Abraham J. Miller-Rushing, Jeffrey T. Morisette, Gregor W. Schuurman, Melissa Trammell, Cat Hawkins Hoffman

United States National Park Service: Publications

Executive Summary

Changing climate and introduced species are placing an increasing number of species at risk of extinction. Increasing extinction risk is increasing calls to protect species by relocating, or translocating, them to locations with more favorable biotic or climatic conditions. Managed relocation, or assisted migration, of species entails risks to both the conservation target organisms being moved as well as the recipient ecosystems into which they are moved.

Recognizing this risk, calls have been made for practitioners interested in considering a managed relocation project to engage in a serious risk assessment prior to advancing a project. We engaged a …

Protocol For Monitoring Fish Communities In Small Streams In The Heartland Inventory And Monitoring Network, Version 2.0, Hope R. Dodd, David G. Peitz, Gareth Rowell, Janice A. Hinsey, David E. Bowles, Lloyd W. Morrison, Michael D. Debacker, Jennifer L. Haack-Gaynor, Jeffrey M. Williams

United States National Park Service: Publications

Executive Summary

Fish communities are an important component of aquatic systems and are good bioindicators of ecosystem health. Land use changes in the Midwest have caused sedimentation, erosion, and nutrient loading that degrades and fragments habitat and impairs water quality. Because most small wadeable streams in the Heartland Inventory and Monitoring Network (HTLN) have a relatively small area of their watersheds located within park boundaries, these streams are at risk of degradation due to adjacent land use practices and other anthropogenic disturbances. Shifts in the physical and chemical properties of aquatic systems have a dramatic effect on the biotic community. …

Cultivated Wild: Enhancing Human Health In Cities Through Green Projects Especially During A Pandemic, Glenn Rose

Environmental Studies Senior Seminar Projects

The University of Richmond Eco-corridor, a new renovation project, transformed a wildly overgrown area into one of beauty with several recreational uses. The opening of this project comes at an important time for local outdoor recreation in cities, the COVID-19 pandemic. Previous work has suggested that landscapes are more beautiful when there is minimal human impact, therefore wilderness scenes are more likely to be used for nature walks and observing nature. While other studies suggest that beauty is dependent on how the land may be used, suggesting that “cultivated wild” is preferrable. This paper used an observational study and a …

Tree Effects On Urban Microclimate: Diurnal, Seasonal, And Climatic Temperature Differences Explained By Separating Radiation, Evapotranspiration, And Roughness Effects, Naika Meili, Gabriele Manoli, Paolo Burlando, Jan Carmeliet, Winston T. L. Chow, Andres M. Coutts, Matthias Roth, Erik Velasco, Enrique R. Vivoni, Simone Fatichi

Research Collection School of Social Sciences

Increasing urban tree cover is an often proposed mitigation strategy against urban heat as trees are expected to cool cities through evapotranspiration and shade provision. However, trees also modify wind flow and urban aerodynamic roughness, which can potentially limit heat dissipation. Existing studies show a varying cooling potential of urban trees in different climates and times of the day. These differences are so far not systematically explained as partitioning the individual tree effects is challenging and impossible through observations alone. Here, we conduct numerical experiments removing and adding radiation, evapotranspiration, and aerodynamic roughness effects caused by urban trees using a …

Protocol For Monitoring Aquatic Invertebrates Of Small Streams In The Heartland Inventory & Monitoring Network, Version 2.1, David E. Bowles, Michael H. Williams, Hope R. Dodd, Lloyd W. Morrison, Janice A. Hinsey, J. Tyler Cribbs, Gareth A. Rowell, Michael D. Debecker, Jennifer L. Haack-Gaynor, Jeffrey M. Williams

United States National Park Service: Publications

Executive Summary

The Heartland Inventory and Monitoring Network (HTLN) is a component of the National Park Service’s (NPS) strategy to improve park management through greater reliance on scientific information. The purposes of this program are to design and implement long-term ecological monitoring and provide information for park managers to evaluate the integrity of park ecosystems and better understand ecosystem processes. Concerns over declining surface water quality have led to the development of various monitoring approaches to assess stream water quality. Freshwater streams in network parks are threatened by numerous stressors, most of which originate outside park boundaries. Stream condition and …

The Legacy Of Car-Share And Light-Rail Transit For Mobility And Accessibility Improvements In Economically Marginalized Neighborhoods In The New York Metro Area, Kyeongsu Kim

Dissertations, Theses, and Capstone Projects

This dissertation explores the value of the car-share program and a new light rail system with respect to their impact on mobility and accessibility improvements in economically and transportation access-wise marginalized neighborhoods in NYC and its adjacent communities. It consists of three main essays that took deep dives into how each new service or system altered mobility or accessibility for those in need. The first essay (Chapter 2) investigates car-share vehicle utilization rates of the Zipcar across NYC. It assesses the utilization rates by vehicle type, service location, time period, and weekday usage compared to weekend activity. With a multivariate …

Extending Arda: Mapping Beyond The Lord Of The Rings And Silmarillion, Stentor Danielson

Journal of Tolkien Research

The canonical maps by Christopher Tolkien from The Lord of the Rings and The Silmarillion cover only a small portion of the world of J.R.R. Tolkien's legendarium. In the years since their publication, many artists have been inspired to try to create maps of the entire world. In doing so, they have both curated the canonical information provided by Tolkien as well as engaged in their own sub-creation, drawing on geographical ideas from the primary world. This paper examines a broad set of fan-made maps of Arda to trace the lineages of their geographical conceptions and the principles behind their …

Digitization Of Ecological History In The Driftless Area Of Minnesota, St. Mary's University Of Minnesota-Geospatial Services, Winona State University-Library Special Collections

Ecological History StoryMaps

The Winona County Historical Society (WCHS) and Winona State University (WSU) collaborated on applying for a Heritage Partnership grant to produce shared resources with the goal to educate the Winona community about the local ecological history of the area. The grant provided the opportunity to hire St. Mary's University of Minnesota - GeoSpatial Services to reconstruct a map fo the vegetative communities in the city of Winona based on a 1855 land survey and other available data. An 1862 transcription of the 1855 of the land survey was found in the WCHS Laird Norton Archive, which was the starting point …

Sediment Characteristics Of The Upper Units Of Landslide-Prone Bluffs Along The Southeast Shoreline Of Lake Michigan, Onyinyechi Iheme, Melinda C. Higley

Summer Research

During the glacial periods, the melting and freezing of glaciers created sediment layers that now compose the shoreline sediments of Lake Michigan. Fast forward to the present, and the rise and fall of Lake Michigan levels has increased the eroding of the shoreline. This starts with the undercutting of the land which causes the topmost layers to fail and produces landslides[2]. Additionally, mass movements tend to favor locations of interlayered sand and clay[2]. It helps develop perched groundwater systems where weak lacustrine clay/silt fails to support the weight of overlying soil[2]. My research goal is to determine the interlayered sediments …

Bed Particle Displacements And Morphological Development In A Wandering Gravel-Bed River, Ryan Mcqueen, Peter Ashmore, T Millard, N Goeller

Geography & Environment Publications

Bed particles were tracked using passive integrated transponder tags in a wandering reach of the San Juan River, British Columbia, Canada, to assess particle movement around three major bars in the river. In-channel topographic changes were monitored through repeat LiDAR surveys during this period and used in concert with the tracer data set to assess the relationship between particle displacements and changes in channel morphology, specifically, the development and re-working of bars. This has direct implications for virtual velocity and morphologic based estimates of bedload flux, which rely on accurate estimates of the variability and magnitude of particle path lengths …

Influence Of Grain Size And Soil Moisture On Ground Penetrating Radar At Dunes 1 And 2, P. J. Hoffmaster State Park, Caitlyn Bott, Melinda C. Higley

Summer Research

The shoreline of Lake Michigan is constantly adjusting to changing lake levels and forces like waves and groundwater movement. However, the geology of the shoreline is heterogenous and each area reacts to change differently, therefore it is important to understand the subsurface geology of specific shoreline environments. At P. J. Hoffmaster State Park, near Muskegon, Michigan, the subsurface of the beach area and dune scarp at locations “Dune 1” and “Dune 2” were studied to understand the sediments in detail. Transects along dune scarps and beach sediment were collected using ground penetrating radar (GPR) to “see” the sediment layers in …

Aeolian Sand Stringers In The Upper Midwest, Usa: Morphology, Stratigraphy, And Paleoenvironmental Significance, Kenzie L. Shandonay

All Graduate Theses, Dissertations, and Other Capstone Projects

Sand stringers are subtle (~1-10 m high), elongate (several km long, up to 100 m wide) aeolian landforms that lack a slip face and generally have a northwest-southeast orientation. They are ubiquitous across the Upper Midwest, including southeast Minnesota and western Wisconsin. Despite their prevalence, the timing, processes, and environmental conditions during sand stringer formation and evolution are poorly understood. This research aims to describe sand stringer morphology and stratigraphy, reconstruct regional paleoclimate, and characterize the timing and geomorphic processes of sand stringer formation and evolution in response to shifts in environmental conditions. This study investigates two sand stringers: Good-1 …

Examining Patterns And Drivers Of Spatial And Temporal Variability In Playa Hydroperiod In The High Plains Region Of Western Kansas, Luis Lepe

All Graduate Theses, Dissertations, and Other Capstone Projects

Playa wetlands are some of the most important natural features of the High Plains of the central United States. Playas provide a range of ecosystem services such as groundwater recharge, surface water storage, and wetland habitat. However, playa functions are declining due to land cover change, climate change, and playa and watershed modifications. There are only a few studies that have examined the variability and controls on playa water storage. This project aims to determine how playa and watershed morphology, watershed land cover, and precipitation patterns affect timing and duration of water storage in 92 playas distributed throughout a 10-county …

Evaluating St. Catherines Island's Shoreline, Vegetation Line, And The Locations Of Loggerhead Sea Turtle Nests, Sydney O. Davis

College of Graduate Studies: Theses & Dissertations

St. Catherines Island is a highly dynamic barrier island on the Georgia coast that is also federally listed critical nesting habitat for loggerhead sea turtles. Understanding how St. Catherines’ shoreline and vegetation is changing over time is geographically important as a potential template for other barrier islands. Measuring sea turtle nest locations will provide insight into their natural patterns and how they adjust those locations on a changing barrier island. Analyzing Moving Boundaries Using R (AMBUR) is implemented in this research to assess the movement of the vegetation and shorelines from 2005-2017 using the End Point Rate (EPR) and Linear …

Using New And Long-Term Multi-Scale Remotely Sensed Data To Detect Recurrent Fires And Quantify Their Relationship To Land Cover/Use In Indonesian Peatlands, Yenni Vetrita

Electronic Theses and Dissertations

Indonesia has committed to reducing its greenhouse gases emissions by 29% (potentially up to 41% with international assistance) by 2030. Achieving those targets requires many efforts but, in particular, controlling the fire problem in Indonesia’s peatlands is paramount, since it is unlikely to diminish on its own in the coming decades. This study was conducted in Sumatra and Kalimantan peatlands in Indonesia. Four MODIS-derived products (MCD45A1 collection 5.1, MCD64A1 (collection 5.1 and 6), FireCCI51) were initially assessed to explore long-term fire frequency and land use/cover change relationships. The results indicated the product(s) could only detect half of the fires accurately. …

Use And Improvement Of Remote Sensing And Geospatial Technologies In Support Of Crop Area And Yield Estimations In The West African Sahel, Kaboro Samasse

Electronic Theses and Dissertations

In arid and semi-arid West Africa, agricultural production and regional food security depend largely on small-scale subsistence farming and rainfed crops, both of which are vulnerable to climate variability and drought. Efforts made to improve crop monitoring and our ability to estimate crop production (areas planted and yield estimations by crop type) in the major agricultural zones of the region are critical paths for minimizing climate risks and to support food security planning. The main objective of this dissertation research was to contribute to these efforts using remote sensing technologies. In this regard, the first analysis documented the low reliability …