Digital Commons Network^™

The Evergreen Challenges Of Healing: An Evaluation Of Urban Green Space In Harambee, Kacee Ochalek

Theses and Dissertations

Urban green space initiatives have emerged in low- and middle-income cities as a solution to disinvestment, the production of more positive public health metrics, and a tool of community engagement. While the production of urban greening provides ample room for applause, The City of Milwaukee’s Healing Spaces Initiative model regarding the ongoing construction of green space and the implementation of maintenance creates challenges that perpetuate racist capitalistic notions of the neoliberal project. This paper presents reports from participant observation, document analysis, and 17 qualitative interviews with representatives of the City of Milwaukee, community partners, garden leaders, and residents. The data …

Growth And Reproduction In Gulf Of Mexico Black Corals (Antipatharians) In Field And Laboratory Studies, Victoria E. Salinas

Theses and Dissertations

Black corals provide an important ecosystem of marine life and are found throughout all the oceans of the world at depths between 2 and 8,600 m. However, little is understood about their life history and the factors that control the distribution of black corals, particularly in the Gulf of Mexico (GoM). Given the impacts of the Deepwater Horizon oil spill on soft corals (e.g., black corals and octocorals) in the GoM, studies of their growth and reproductive biology in both natural and aquaculture environments are crucial for restoration efforts. The objectives of this study were to examine reproductive processes, compare …

Affective Risk Perceptions Toward Travel In A Covid Era: Policy And State Political Influences, Chloe Riley

Theses and Dissertations

This paper aims to analyze the influence of state political affiliation and policy on affective risk perceptions, in the context of COVID-19. The study of risk perceptions in the travel literature is important because it can help industry leaders predict tourist decision-making and ensure feelings of safety for travelers. The relevance of risk perceptions has become even more apparent since the start of the COVID-19 pandemic. This study analyzes three policies put into place to mitigate the spread of COVID-19: mask mandate, cancellation of public events, and school closures. Affective risk perceptions were measured by the Tourism Crisis Management Initiative’s …

Climate Change And The Global Nutrient Overload: The Microbial Response Of Extreme Waterbodies To Environmental Change, Samuel P. Bratsman

Theses and Dissertations

One of the defining characteristics of our current epoch—the Anthropocene—is modification of nutrient cycles. At regional to global scales, humans have fundamentally reshaped the availability of carbon, nitrogen, and phosphorus. These changes are particularly apparent in freshwater ecosystems, which receive surface and groundwater inputs of nutrients from agriculture, fossil fuel use, and wastewater. In this thesis, I investigated how the addition of nutrients affects microbial community and biogeochemistry in two extreme environments: the hypereutrophic shallow Utah Lake and nutrient-limited Arctic permafrost streams. In my first chapter, I used bioassay and dilution bioassay experiments to identify what factors control harmful algal …

Gang Culture And Their Territorial Space: Graffiti Analysis Using Geographical Information Systems (Gis), Christian F. Delgado

Theses and Dissertations

The purpose of this study is to understand gang culture and how gangs come to define their territorial space. This thesis will focus on identifying gang spaces by utilizing geographic techniques to aid in determining where high gang activity and/or crime is taking place. This will be done by point pattern, data analysis, visualization analysis, and heat mapping on complaints, arrest, shooting, and graffiti data. This research has been conducted deductively, as it will use the theories mentioned in the literature review to define hypotheses.

Gangs are known for their violent and disruptive behavior. They ravage community resources and introduce …

The Impacts Of Holocene Climate And Pre-Columbian Humans On Neotropical Andean Forests, Rachel Kathleen Sales

Theses and Dissertations

Humid montane forests in the tropical Andes form hotspots for biodiversity, endemism, and conservation. Threats to the forests from deforestation are amplified by ongoing climate change, which could further reduce available habitat area by about 57 – 80%. These forests are known to have withstood considerable climate change in the past, and an emerging view suggests that they have also been shaped by a long interaction with people. Although climate-driven species range shifts are broadly known, questions remain about how past climate change has affected the species composition of these forests. The interaction of people with forests on the eastern …

Mutants, Sentinels, And Cerebro: Messages About Technology And Society In Science Fiction Films, Paige Marie Lee

Theses and Dissertations

Technology plays a significant role in society and in entertainment. People hold an ambivalent attitude about technology that is often illustrated in science fiction films. Much like myth telling stories to teach a lesson, science fiction films caution viewers of the effects of powerful technology usage in culture today. This thesis examines X-Men to show how relevant principles found in myth continue to be relevant to media consumption. Using media ecology to inform the reader about the technological environment (Mumford, 1944), this analysis of technology portrayed in X-Men shows the implications real world technology, such as radiation, weapons, and artificial …

Families In The Sky: Investigating The Population Structure Of Pinus Longaeva, Samuel Arnold Decker

Theses and Dissertations

In the Western United States, the Great Basin is a geographic feature that is home to a variety of unique species, including Great Basin bristlecone pine (Pinus longaeva, PILO). P. longaeva is well known for the age of some of the trees, some of which are over 4000 years old. In this study 17 microsatellite markers (simple sequence repeat, SSR) are identified and used to genotype a selection of 480 individuals spread across 24 PILO populations and 60 individuals divided equally between 2 outgroup species, Pinus aristata and Pinus flexilis. One population of PILO, HMW, shows more genetic similarity with …

Biotic Characteristics Of Managed And Unmanaged Coastal Dunes In The Outer Banks, North Carolina, Andrew E. White

Theses and Dissertations

Under future climate change and sea level rise scenarios, Natural and Nature-Based Features (e.g., dunes) that protect coastal habitat and infrastructure will be exposed to increased wave energy and storm surge. Understanding how these forces will impact coastal dunes is necessary for their continued use as protective features. Coastal dunes develop through feedback between vegetation and sediment deposition, a process complicated by species-specific growth rates and responses to burial. Wave flume studies have tested the effects of dune vegetation on erosion and found multiple plant organs across several functional types to be important for resisting erosion. Although dune building and …

Quantifying Contributions Of Climate, Geography, And Gene Flow To Divergence: A Case Study For Three North American Pines, Constance E. Bolte

Theses and Dissertations

Long-lived species of trees, especially conifers, often display weak patterns of reproductive isolation, but clear patterns of local adaptation and phenotypic divergence. Discovering the evolutionary history of these patterns is paramount to a generalized understanding of speciation and the processes that confer population persistence versus those that compromise adaptive potential under rapidly changing environments. Forest trees have long generation times and low migratory potential making them especially vulnerable to population fragmentation and reductions of genetic diversity due to insufficient tracking of niche optima and adaptational lags. Within clades of the genus Pinus, evolutionary histories appear to be riddled with hybridization …