Digital Commons Network^™

Creating A Safe Haven : A Study On Coastal Resilience In A Time Of Climate Change & Sea-Level Rise In The Philippines, Maria Carla Victoria M. Sebastian

Masters Theses

In 2013, Typhoon Haiyan struck the southern part of the Philippines with a five to six meter storm surge; in just three days it took more than 7,360 lives in one city alone, displaced four million citizens, and affected around 16 million Filipinos nationwide. Coastal resiliency in relation to climate change is a particularly urgent issue for city planners and government leaders in an archipelago of 7,641 islands, where 80% of the population dwells in coastal areas. This thesis aims to challenge the existing paradigm of coastal provincial architecture in the Philippines by proposing a more integrated evacuation center that …

Things That Grew While I Looked At The Ground, Heather Mcmordie

Masters Theses

Broadly speaking, I am interested in the role of fine arts in translating the complexities of natural systems. This particular body of work explores the relationship between printmaking and soil science—just one of the many possible relationships between arts and sciences—with a focus on salt marsh soil systems. Generating public interest soil systems and other hidden ecological systems can be difficult due to the opaqueness of language and concepts surrounding these systems and a perceived distance (physically or conceptually) from the general public. Printmaking—with its inherent multiplicity, mediation, and readability—offers opportunities for making the seeming abstraction of soils evocative and …

Ocean State Food Stories, Charlotte Clement

Masters Theses

Many Rhode Islanders lack access to local food system education. They struggle to connect with local food outlets as well as understand why supporting a resilient local food community matters. Local food producers face great challenges within the system such as finding stable ways to produce, distribute, and sell their merchandise. In addition, the RI government’s agricultural marketing efforts are not innovative and local food-centric nonprofits are swamped with work resulting in the outsourcing of creative marketing jobs that have yielded questionable results. In order to engage with a wider audience, both the government and the non-profit sector need to …

Establishing Best Practices In Institutional Repository Organization, Scott Bacon

Digital Commons Southeastern User Group Meeting (2020) (Archived)

On the one-year anniversary of the CCU Digital Commons repository the organization of the Collections / Communities.html page was reviewed to gauge the need for revisions. Over 100 Digital Commons sites were examined to see how other repository managers organized their Collections pages. Top-level communities were coded into Community Types and were analyzed to surface trends in current practice. This presentation reviews trends in practice that emerged during research, as well as some of the best practices that were identified, including planning, iteration, labeling, limiting jargon, and finding a balance with top-level and nested content. Suggestions for improvement are given …

Collaboration And Evaluation In Urban Sustainability And Resilience Transformations: The Keys To A Just Transition?, Liliana Elizabeth Caughman

Dissertations and Theses

Climate has changed and will continue changing; city populations are swelling as urbanization continues to accelerate; extreme environmental events like heat waves and floods are becoming more severe and more common; and the climate justice movement is rapidly gaining momentum. It in this context that municipal governments find themselves urgently seeking solutions to transition cities from extractive, vulnerable, and unjust to sustainable, resilient, and equitable. The task is complex and will require systemic transformations across interconnected social, environmental, and economic infrastructures. Emerging theories regarding how to govern such massive changes suggest Transition Management strategies and the values of a just …

Total Factor Environmental Productivity In The Mediterranean Countries: A Malmquist–Luenberger Index Approach, Eya Jebali, Hédi Essid

International Journal of Applied Management and Technology

This paper examines the environmental productivity in the Mediterranean countries over the period 2009-2014.We use the Malmquist-Luenberger productivity index (MLPI) that can handle undesirable outputs within Data Envelopment Analysis (DEA) approach. We decompose the MLPI index into technical efficiency, technological change and scale efficiency change in order to determine the source of productivity changes. Empirical findings indicate that the total factor environmental productivity in the Mediterranean countries have a negative developmental trend. Furthermore, we find that technological progress is the main source of productivity growth. Finally, Mediterranean countries need a considerable effort on R&D to optimize the potential for technical …

Conquer And Prevail Issue 20 May 26 2020, Wofford College. Office Of Marketing And Communications

Conquer and Prevail Newsletter

No abstract provided.

The Trait Repertoire Enabling Cyanobacteria To Bloom Assessed Through Comparative Genomic Complexity And Metatranscriptomics, Huansheng Cao, Yohei Shimura, Morgan M. Steffen, Zhou Yang, Jingrang Lu, Allen Joel, Landon Jenkins, Masanobu Kawachi, Yanbin Yin, Ferran Garcia-Pichel

Food for Health: Publications

Water bloom development due to eutrophication constitutes a case of niche specialization among planktonic cyanobacteria, but the genomic repertoire allowing bloom formation in only some species has not been fully characterized. We posited that the habitat relevance of a trait begets its underlying genomic complexity, so that traits within the repertoire would be differentially more complex in species successfully thriving in that habitat than in close species that cannot. To test this for the case of bloom-forming cyanobacteria, we curated 17 potentially relevant query metabolic pathways and five core pathways selected according to existing ecophysiological literature. The available 113 genomes …

Involving Anthroponomy In The Anthropocene: On Decoloniality, Jeremy Bendik-Keymer

Faculty Scholarship

This book introduces the idea of anthroponomy – the organization of humankind to support autonomous life – as a response to the problems of today’s purported "Anthropocene" age. It argues for a specific form of accountability for the redressing of planetary-scaled environmental problems. The concept of anthroponomy helps confront geopolitical history shaped by the social processes of capitalism, colonialism, and industrialism, which have resulted in our planetary situation. Involving Anthroponomy in the Anthropocene: On Decoloniality explores how mobilizing our engagement with the politics of our planetary situation can come from moral relations. This book focuses on the anti-imperial work of …

Storm Surges In The Bohai Sea: The Role Of Waves And Tides, Yuanyi Li, Huan Feng, Guillaume Vigouroux, Dekui Yuan, Guangyu Zhang, Xiaodi Ma, Kun Lei

Department of Earth and Environmental Studies Faculty Scholarship and Creative Works

A storm surge is a complex phenomenon in which waves, tide and current interact. Even though wind is the predominant force driving the surge, waves and tidal phase are also important factors that influence the mass and momentum transport during the surge. Devastating storm surges often occur in the Bohai Sea, a semi-enclosed shallow sea in North China, due to extreme storms. However, the effects of waves on storm surges in the Bohai Sea have not been quantified and the mechanisms responsible for the higher surges that affect part of the Bohai Sea have not been thoroughly studied. In this …

When Environmental Obligations Collide With State Sovereignty: An International And Sharia Law Perspective, Seyed Masoud Noori, Soheila Ebrahimi Louyeh

Consensus

This article critically reviews the notion of State sovereignty under international law and argues that to achieve eco-justice as well as sustainable development goals, a restrictive and ecological approach needs to be taken toward the principle of states’ permanent sovereignty over natural resources. Environmental sustainability requires states’ environmental obligations to be identified as erga omnes so they can be addressed toward the international community as a whole and fall within the scope of article 48 of the ILC Articles on States Responsibility. Interestingly, in complete alignment with this progressive interpretation, sustainable utilization of natural resources has a longstanding foundation in …

Commencement Program [Spring 2020], Clark University

Commencement Programs

Annual Commencement Program for graduation ceremonies at Clark University, held on May 24th, 2020.

La Habana: A History Of Society, Livelihood, Movement, And Land Use On The Iquitos-Nauta Highway, Katie Brown

Undergraduate Honors Theses

With increasing infrastructural projects and land titling in the Peruvian Amazon, many changes are occurring within small roadside communities. In this case study, we investigate how these changes impact livelihoods, land use, travel patterns, and social relations within the broader concepts of development, privatization of land, and commodification of nature. Specifically we focus on the caserío La Habana situated on the Iquitos-Nauta highway in the Loreto region of Peru. Semi-formal interviews and ethnographic methods were conducted to gather information on social organization, history of the community, land use practices, migration patterns, opinions on the road, and livelihood strategies. After data …

Soil Characteristics In Relation To Urban Tree Mortality, William Mccuen, Jordan Leis, Nancy Broshot

Linfield University Student Symposium: A Celebration of Scholarship and Creative Achievement

Research in 1993, 2003, and 2013 showed high rates of tree mortality and low rates of recruitment (new trees) in Portland, Oregon’s Forest Park. Three control sites in the Mount Hood National Forest were added in 2013; research from 2018 showed the control sites had significantly more live trees, and more seedlings and saplings, than the urban sites. For the last three summers, we have been studying the soil at our sites to elucidate possible causes for the observed low rates of recruitment. Data from 2017, 2018, and 2019 have shown the control sites have significantly deeper O horizons, higher …

On Bayesian Methods For Spatial Point Processes, Jieying Jiao

Doctoral Dissertations

Spatial point pattern data are routinely encountered. A flexible regression model for the underlying intensity is essential to characterizing and understanding the pattern. Spatial point processes are a widely used to model for such data. Additional measurements are often available along with spatial points, which are called marks. Such data can be modeled using marked spatial point processes.

The first part of this dissertation focuses on the heterogeneity of point processes. We propose a Bayesian semiparametric model where the observed points follow a spatial Poisson process with an intensity function which adjusts a nonparametric baseline intensity with multiplicative covariate effects. …

Effect Of Parasitic Orobanche Uniflora On Sedum Plants And The Potential Implications For Urban Green Roofs, Jessica Bigger

University Honors Theses

An increasing presence of the parasitic plant Orobanche uniflora has been observed on green roofs in urban areas such as Portland, Oregon. Although little is known about these plants, they are believed to be detrimental to host plants such as sedums that grow on green roofs. Orobanche uniflora takes over the host plant’s cellular structure and uses this to take in nutrients. This poses a problem for green roof succulents because if the host plants are killed by the parasite then the green roofs will not be able to function as effectively. Green roofs may also be contributing to an …

Long-Term Thermal Sensitivity Of Earth’S Tropical Forests, Martin J.P. Sullivan, Simon L. Lewis, Kofi Affum-Baffoe, Carolina Castilho, Flávia Costa, Aida Cuni Sanchez, Corneille E.N. Ewango, Wannes Hubau, B Marimon, Abel Monteagudo-Mendoza, Lan Qie, Bonaventure Sonké, Rodolfo Vasquez Martinez, Timothy R. Baker, Roel J.W. Brienen, Ted R. Feldpausch, David Galbraith, Manuel Gloor, Yadvinder Malhi, Shin Ichiro Aiba, Miguel N. Alexiades, Everton C. Almeida, Oliveira Ea De, Esteban Álvarez Dávila, Patricia Alvarez Loayza, Ana Andrade, Sa Vieira, Luiz E.O.C. Aragão, Alejandro Araujo-Murakami, Eric J.M.M. Arets

School of Biological and Marine Sciences

The sensitivity of tropical forest carbon to climate is a key uncertainty in predicting global climate change. Although short-term drying and warming are known to affect forests, it is unknown if such effects translate into long-term responses. Here, we analyze 590 permanent plots measured across the tropics to derive the equilibrium climate controls on forest carbon. Maximum temperature is the most important predictor of aboveground biomass (−9.1 megagrams of carbon per hectare per degree Celsius), primarily by reducing woody productivity, and has a greater impact per °C in the hottest forests (>32.2°C). Our results nevertheless reveal greater thermal resilience …

Movement Of Translocated Adult Sicklefin Redhorse (Moxostoma Sp.) In The Oconaluftee River, North Carolina: Implications For Species Restoration, Jessica L. Davis, David P. Gillette, C. Reed Rossell Jr., Michael J. Lavoie

Southeastern Fishes Council Proceedings

The Sicklefin Redhorse is a rare, undescribed species of Moxostoma, endemic to the Hiwassee and Little Tennessee River basins of western North Carolina and northern Georgia, where it has been eliminated from much of its native range. It is listed as endangered in Georgia and threatened in North Carolina. Although it has not been granted federal protected status, this species is the subject of a Candidate Conservation Agreement between federal, state, tribal, and private stakeholders, of which one objective calls for the re-establishment of Sicklefin Redhorse populations throughout its historical range. The objective of our study was to evaluate …

Bieniak '21 Awarded National Udall Scholarship, Megan Baker

News and Events (Discontinued Series)

No abstract provided.

Ecosystem Metabolism In Small Ponds: The Effects Of Floating-Leaved Macrophytes, Daniel J. Hornbach, Emily G. Schilling, Holly Kundel

Faculty Authored Articles

Small ponds constitute a significant number of standing water bodies on earth and may contribute to CO2 uptake or release into the atmosphere. Despite their importance, few studies have examined ecosystem metabolism in ponds, especially in ponds that may be dominated by floating-leaved macrophytes. In this study, we examined ecosystem metabolism by measuring changes in dissolved oxygen levels every 10 min from late May through late October for four shallow ponds (0.5–1.5 m) in east-central Minnesota, USA. Ponds had varying levels of floating-leaved macrophytes from sparse (<1% coverage) to abundant (61% coverage). We found significant dierences in a number of physical/chemical factors including P, N, DOC, water temperature and light penetration. We also found significant dierence in gross primary production (GPP—average ranged from 2.2 to 5.5 mg O2/L/day), respiration (R—average ranged from 􀀀6.8 to 􀀀3.6 mg O2/L/day) and net ecosystem production (NEP—average ranged from 􀀀1.5 to 􀀀0.1 mg O2/L/day) among the ponds. On average, all of the ponds were heterotrophic (R > GPP). While it appeared that floating-leaved macrophytes provided a significant impact on ecosystem …

Effects Of Climate And Land-Use Changes On Fish Catches Across Lakes At A Global Scale, Yu-Chun Kao, Mark W. Rogers, David B. Bunnell, Ian G. Cowx, Song S. Qian, Orlane Anneville, T. Douglas Beard Jr., Alexander Brinker, J. Robert Britton, René Chura-Cruz, Natasha J. Gownaris, James R. Jackson, Külli Kangur, Jeppe Kolding, Anatol A. Lukin, Abigail J. Lynch, Norman Mercado-Silva, Rodrigo Moncayo-Estrada, Friday J. Njaya, Ilia Ostrovsky, Lars G. Rudstam, Alfred L.E. Sandström, Yuichi Sato, Humberto Siguayro-Mamani, Andy Thorpe, Paul A.M. Van Zwieten, Pietro Volta, Yuyu Wang, András Weiperth, Olaf L.F. Weyl, Joelle D. Young

Environmental Studies Faculty Publications

Globally, our knowledge on lake fisheries is still limited despite their importance to food security and livelihoods. Here we show that fish catches can respond either positively or negatively to climate and land-use changes, by analyzing time-series data (1970–2014) for 31 lakes across five continents. We find that effects of a climate or land-use driver (e.g., air temperature) on lake environment could be relatively consistent in directions, but consequential changes in a lake-environmental factor (e.g., water temperature) could result in either increases or decreases in fish catch in a given lake. A subsequent correlation analysis indicates that reductions in fish …

Understory Response To Restorative Thinning In Coast Redwood Forests, Alyssa Hanover

Master's Theses

Restoration of late seral features in second-growth Sequoia sempervirens forests is an important management concern, as so little of the original old-growth remains. The abundance of herbaceous species provides a metric for assessing recovery in these forests where associated understory plants are adapted to closed canopy conditions. Data were collected using a stratified random sampling design across three treatments: mechanically thinned second-growth, un-thinned second-growth, and old-growth reference stands. Pairwise PerMANOVA indicated greater abundance and diversity of native herbs in old-growth and un-thinned second-growth compared to thinned stands, as well as higher measures of canopy cover, basal area, and dominance of …

Coast Redwood Stand Composition, Structure, And Fuel Load Following Prescribed Fire In Big Basin Redwoods State Park, David Cowman

Master's Theses

With the prevalence of catastrophic wildfires increasing as a response to a century of widespread fire suppression, shifts in weather patterns, and other external factors, land managers throughout the United States have sought methods to increase the resiliency of landscapes to fire. With a host of adaptations to periodic disturbance, S. sempervirens has a competitive advantage over other species when fire is present. Utilizing sixty 10-meter diameter plots from sites previously burned in 1999, 2007, and 2011, and 60 unburned control sites, data was collected on forest stand composition and structure as well as understory species composition and dominance. Line …

An Examination Of Garden-Based Education Impacts On Title 1 Elementary School Students’ Environmental Literacy In San José, California, Alexandra Dahl

Master's Theses

The objective of this research was to assess garden-based pedagogy as an effective strategy to increase environmental literacy in elementary-aged students. With severe environmental issues facing children today and into the future, environmental literacy is a desired outcome of environmental education programs. Such interventions create environmentally responsible citizens who understand how humans impact the natural environment and thereby act sustainably. Currently, little research exists on garden education’s influence on students’ environmental literacy, especially in underrepresented communities. Using a nonequivalent control group study design, this project investigated the impact of a garden education program in Central San José, CA in an …

Noise Pollution, Environmental Justice, And Urban Green Space Accessibility: A Case Study In San José, California, Lauryn Duoto

Master's Theses

Noise pollution is an environmental stressor associated with a number of poor health outcomes. Promisingly, recent studies have identified urban green spaces such as public parks and community gardens as-built environments that can minimize noise pollution in the urban context. The objective of this project was to identify low-income communities of color that lack urban green space accessibility within the city of San José, California, to determine if sound level could be an indicator of urban green space usage and to evaluate whether urban green space can mitigate noise. Neighborhood demographics based on census tract data, including ethnicity and socioeconomic …

Supermarket Redlining And Food Deserts: Potential Policies And Alternative Food Market Solutions With Applications To The Hartford Food System, Alexis Meehan

Honors Scholar Theses

Food deserts are neighborhoods that are typically socioeconomically disadvantaged and have high levels of low-income populations who face barriers to accessing healthy, nutritious food. These barriers which include, but are not limited to, the increased distance these food insecure populations are located from large food retailers that supply fresh produce. Many of these inequalities stem from institutionalized racism which allowed for practices such as supermarket redlining and, in part, led to the creation of food deserts in places like Hartford, Connecticut. In using the historical context that shaped the Hartford food system and comparing the identified alternative food market solutions …

Tyler Clevenger: Advancing Climate Policy At Home And Abroad, Christina Nunez

Colby Magazine

"I appreciated pretty early on that [climate] would represent my generation's defining challenge, it would take the best that we as people have to offer." -Tyler Clevenger '18

Sandy Buck '78: Seeing Light Amidst The Gloom, Gerry Boyle

Colby Magazine

"If you look at the macro you could come to a grinding halt and throw your hand up. But when you look at the local, and even state and regional levels, there are reasons for hope." -Sandy Buck '78

Gail Carlson: Inspiring Students To Step Up, Gerry Boyle

Colby Magazine

"When you become a doomsday person, when you're really pessimistic, it's because you can't see that you can make a difference." -Gail Carlson, associate professor of environmental studies

Reasons For Hope: In The Face Of Daunting Climate Events, Colbians Look For Answers, Colby College

Colby Magazine

No abstract provided.