Environmental Studies Commons^™

Trends In Nectar Concentration And Hummingbird Visitation: Investigating Different Variables In Three Flowers Of The Ecuadorian Cloud Forest: Guzmania Jaramilloi, Gasteranthus Quitensis, And Besleria Solanoides, Sophie Wolbert

Independent Study Project (ISP) Collection

Many variables affect hummingbird visitation to flowers, including nectar concentration, time of day, corolla length and other aspects of flower morphology, and elevation. Nectar concentration was measured from flowers of three Ecuadorian subtropical montane species: Guzmania jaramilloi, Gasteranthus quitensis, and Besleria solanoides. Concentration values were compared across varying times of day, corolla lengths, and elevations to determine the effects of these variables on flower nectar concentration. Camera traps were also used to observe hummingbird visitation to the above three flower species. After running regression and ANOVA analyses, nectar concentration was found to be positively correlated with time …

The Importance Of Rivers In Protected Areas: Macroinvertebrate Sampling Reveals The Impact Of Humans And Highways On Water Quality, Marie-Claire Harrison

Independent Study Project (ISP) Collection

The water quality and level of contamination of two rivers in a cloud forest ecosystem in the Mejía region of Ecuador, the Tupí River and the Pilatón River were assessed through benthic macroinvertebrate sampling at various sites along the rivers. Many different biological indices were then used to assess water quality at each site. Pollution in the form of grey water, black water, and petroleum negatively impacted the water quality of the both rivers as they pass through the town of La Esperie. Differences in river structure and size also played a role in determining the prevalence of certain benthic …

Harpy Eagle (Harpia Harpyja) Conservation: Juvenile Behavior And Diet At A Nest Near Pijibasal, Darien, Hannah Rodgers

Independent Study Project (ISP) Collection

The Harpy Eagle (Harpia harpyja), the largest and most powerful bird of prey in the Americas, is declining throughout its range in Neotropical forests. Hunting and deforestation threaten populations in the most important remaining eagle habitat in Central America, the Darien province of Panama. These eagles may have the longest postfledging juvenile dependency of any raptor, though juvenile behavior during this period is poorly studied. This study monitored an 11-month-old juvenile for 7 days at a nest near the indigenous community of Pijibasal in order to study behavior and diet. Researchers recorded the juvenile’s location and behavior, studied prey remains …

Continuing Efforts To Alleviate "Orange Pain" An Internship With The Da Nang Association Of Victims Of Agent Orange/Dioxin, Loan Heilner

Independent Study Project (ISP) Collection

This year marked the 55th anniversary of Vietnam’s Agent Orange Disaster. Decades after the end of the war, Vietnamese people are still largely being affected by the remnants of the United States’ Agent Orange herbicide sprays. Dioxin chemical has now been confirmed detrimental to human and environmental well-being, but unfortunately it still remains in high concentrations in certain areas of Vietnam. Dioxin chemical is passed on through genetics to new generations, but one of the leading causes of dioxin-related health defects today are due to environmental residue. In Da Nang, Agent Orange was stored and loaded at the local airbase …

Fish Diversity And Coral Health Of Tanzania's Reefs: A Comparative Study Between The Ushongo Village Reef And The Fungu Zinga Reef Over Time, Della Turque, Corinne Casper

Independent Study Project (ISP) Collection

The world’s oceans are becoming increasing acidic due to global climate change, posing a threat to marine ecosystems, including coral carbonate systems. Environmental threats are exacerbated by human development stressors as well: growing populations, dependency on marine resources, and unsustainable practices invaluable marine ecosystems at risk. Tanzania’s coral reef system extends for 3580 km2 (Muhando et al. 2008) near the Tanga region, serving over half a million people who are highly dependent on fishing and other marine resources as their livelihoods (Samoilys et. al. 2008). With Tanzania’s population rapidly growing, the unsustainable pressure on coral reefs for sustenance and livelihood …

Proxy Dating In Iceland Testing The Validity Of Silene Acaulis As A Phytometric Proxy, Madelyn Grant

Independent Study Project (ISP) Collection

Climate change is causing drastic changes in the cryosphere, particularly in the Arctic region where average warming is 1.9 times greater than in the rest of the world due to Arctic amplification. Understanding the response of essential climate variables such as glaciers and ice caps to rapid Arctic warming is essential to predicting future changes in the Arctic region and around the world. Proxy dating methods can help construct a record of warming-induced glacial retreat in areas where long-term monitoring systems are not in place. In Arctic regions, the cushion plant Silene acaulis represents one of the only feasible proxies …

Reef Fish And Coral Assemblages On Hospital Point And Near Bastimentos Island, Panama, Elaine Shen

Independent Study Project (ISP) Collection

Because worldwide declines coral reef health are of major concern, studying coral reefs through the lens of conservation efforts at local scales is essential for determining and monitoring effective policy measures. In the Bocas del Toro Archipelago, there are conflicts of interest between exploitative rapid tourism development, overfishing practices, and national efforts to conserve the local marine biodiversity. Coral and reef fish species abundance richness, diversity, evenness, and similarity were measured to see how coral and reef fish assemblages changed between protected and unprotected areas. A total of 329 fish and 322.5 square meters of benthos were analyzed using underwater …

Water Resource Change And Management: Implications Of Climate Change And Water Resource Management For Pastoral Herders In Bayan Ulgii, Rachel Ryan

Independent Study Project (ISP) Collection

Mongolia is the 8th most vulnerable country in the world to climate change. The water regime of Mongolia is therefore experiencing intensive change with significant effects in the availability, distribution, and security of water resources. The implications of this change are exacerbated when aligned with poor water resource management, an issue that is prevalent as water regime change challenges current water management systems. These implications specifically affect the vulnerable rural population of Mongolian herders who maintain the practice of nomadic pastoralism. In the western province of Bayan Ulgii, the change in the numerous glaciers and other water resources that are …

Enhancing Planning And Preparedness Capacities For Climate Change Resilience In Wawa, Ontario: A Community-Based Photovoice Approach, Samantha Russo

Geography and Environmental Studies Major Research Papers

The integration of local community and Indigenous Knowledge in disaster planning and management has the potential to increase resilience in rural and Aboriginal communities across Ontario. This research incorporates findings from a literature review, and builds on the existing gaps within community-based participatory action research, through a case study of the 2012 Wawa-Michipicoten First Nation flooding event. Ten local citizen community participants from Wawa, Ontario and the Michipicoten First Nations were involved in a photovoice project to visually document their experiences and understandings of the flooding event. This research project seeks to document community perceptions and understandings to the flooding’s …

Secretarial Order 3336 Science Priorities: The Role Of Science Past, Present, And Future, Stephen W. Barrett

Joint Fire Science Program Digests

Within sagebrush (Artemisia spp.) ecosystems, which are home to more than 350 species of plants and animals, potentially more frequent and severe fires are causing an increased threat to human safety, property, rural economies, and wildlife habitat. In particular, the habitat of the greater sage-grouse (Centrocercus urophasianus), an iconic sagebrush-dependent species, is at risk. In response to this reality, on January 15, 2015, Secretary Sally Jewell signed Secretarial Order 3336 (S.O. 3336), titled “Rangeland Fire Prevention, Management, and Restoration.” The main purpose of the order is to implement enhanced policies and strategies for managing rangeland fire and …

Variability Of Lacustrine Sediment Proxy Responses To Late Holocene Climate Change As Modified By Lake Specific Processes: A Review Of Ecological And Geophysical Processes Across Northern And Eastern Iceland, Mallory Mintz

Independent Study Project (ISP) Collection

Consistenly-deposited lake sediments provide some of the highest resolution records of local and global climates in the past, offering the potential to better understand modern climate change in the context of past climate variability. In relating proxies to their respective climate regimes, the environmental cues that the specific proxies reacted to must be isolated from the general noise of possible local influences. In this investigation, biogenic silica (BSi), total organic carbon (TOC), δ13C values, and carbon: nitrogen ratios were analyzed between lakes through northern Iceland, to review possible complicating factors specific to the use of lacustrine proxies in the interpretation …

The Importance Of Nature: An Investigation On How Geography Influences Well-Being, Christina Cobb

Independent Study Project (ISP) Collection

The objective of this community service project (CSP) was to study how a community’s location, specifically within nature, influences their well-being. I hoped to see how the community’s location, within Chapada Diamantina national park, influences the many ways health is promoted, and how these ways are affected by their location within nature. This project was built upon a review of the literature, which found that there is a theoretical basis for the notion that contact with nature is beneficial, a term deemed Biophilia. There is a robust body of academic research that highlights the health benefits deriving from contact …

Enso Controls Interannual Fire Activity In Southeast Australia, Michela Mariani, Michael-Shawn Fletcher, Andrés Holz, Petter Nyman

Geography Faculty Publications and Presentations

El Niño–Southern Oscillation (ENSO) is the main mode controlling the variability in the ocean-atmosphere system in the South Pacific. While the ENSO influence on rainfall regimes in the South Pacific is well documented, its role in driving spatiotemporal trends in fire activity in this region has not been rigorously investigated. This is particularly the case for the highly flammable and densely populated southeast Australian sector, where ENSO is a major control over climatic variability. Here we conduct the first region-wide analysis of how ENSO controls fire activity in southeast Australia. We identify a significant relationship between ENSO and both fire …

Human Creativity As A Vehicle For Societal Change: Can Social Action Through Art And Music Drive Positive Societal Change In Jordan?, Marina Qutab

Independent Study Project (ISP) Collection

This case study addresses a gap in the research on society and culture as it examines the relationship between social action through human creativity and positive societal change in Jordan. This relationship was studied through the following methods: six formal interviews with three Musicians, one Artist, one Organizational Behavior and Work Psychologist, and one Cognition and Didactics Researcher; one informal interview with a Jordanian taxi driver; and 30 oral surveys provided to students at The University of Jordan. The researcher’s main goal was to investigate how human creativity expressed through music and the arts can address current pressing environmental and …

Benthic Algae And Diatom Communities In Seagrass Meadows Under Three Different Human Impact Regimes In Bocas Del Toro, Panamá, Averyl Cheng

Independent Study Project (ISP) Collection

In Bocas del Toro, Panamá, widespread tourism has been the main source of revenue and has become an increasing threat to seagrass meadows and the organisms they support. This study aimed to investigate and describe algae and diatom communities under three different regimes of anthropogenic disturbance: high, medium and low human impact. The biodiversity was analyzed by measuring the algae and diatom assemblages with Shannon-Weiner’s Biodiversity Index, Evenness Index and Sorensen’s coefficient. The data obtained from these three diversity indices were compared to the areas along an anthropogenic disturbance gradient of high, medium and low impact. A total of 12 …

Evaluation Des Impacts Sociaux Et Ecologiques De La Gestion Communautaire De La Forêt D’Analabe, Nicole Israel-Meyer

Independent Study Project (ISP) Collection

Le transfert de gestion des forêts de l’Etat vers les communautés locales est l’une des approches que le gouvernement malgache a implémentées pour à la fois conserver la biodiversité locale et continuer le développement rural. Cette étude cherche à comprendre les impacts sociaux et écologiques de la gestion communautaire de la forêt d’Analabe par le VOI Fanarenana. La forêt d’Analabe se trouve dans le secteur d’Antanandava du district Majunga II dans le nord-ouest du pays. En utilisant une méthodologie mixte, l’étude a exposé que dans les trois ans d’opération du VOI Fanarenana, la forêt est plus saine et la majorité …

Un Nuevo Fenómeno En Un Mundo De Tradición: Percepciones Del Cambio Climático En La Isla De Taquile / 99/5000 A New Phenomenon In A World Of Tradition: Perceptions Of Climate Change On The Island Of Taquile, Daniel Meagher

Independent Study Project (ISP) Collection

El cambio climático amenaza el estilo de vida tradicional de los agricultores de subsistencia de los Andes. Este trabajo resume y analiza las percepciones del cambio climático de los Taquileños, una comunidad de 2.500 campesinos indígenas de subsistencia que viven en la isla de Taquile en el Lago Titicaca. Esta comunidad no está aislada del mundo exterior, y hay una fuerte presencia de la iglesia cristiana y el turismo.

Los datos fueron recolectados a través de entrevistas y observación participante entre las fechas del 2 de noviembre al 15 de noviembre, 2016. Las veinte entrevistas contienen las perspectivas de siete …

La Lluvia Y El Océano Oculto: El Estudio Del Unu Cambio Y Su Relación Con Viracocha En Chinchero / The Rain And The Occult Ocean: The Study Of The Change And Its Relationship With Viracocha In Chinchero, Edgar J. Payano

Independent Study Project (ISP) Collection

Chinchero es una comunidad pequeña donde tradiciones han permanecido, pero a la misma vez el ambiente se está cambiando rápidamente. Una de las actividades más importante de Chinchero es el cultivo seco. El cultivo seco depende de la temporada de lluvias. Mi investigación se trata del unu cambio porque mezclan fuentes de aguas sagradas para atraer lluvia durante sequias. Chinchero siempre ha sufrido de sequias y el unu cambio es un método de prevención desde los tiempos pre-incaicas. Con pocas fuentes de agua en Chinchero, tienen que buscar y utilizar fuentes sagradas afuera de sus inmediaciones. Al otro lado de …

The Effects Of Sub-Lethal Predation On The Reproductive Output Of Acanthaster Planci (Crown-Of-Thorns Starfish), Emily Mucha

Independent Study Project (ISP) Collection

Wide-scale declines in live coral cover have been observed throughout history. Modern day coral populations face a multitude of environmental disturbances, however one of the most devastating to the reefs in the Indo-Pacific is the crown-of-thorns starfish (Acanthaster planci), which feeds on the tissues of live corals. The rate at which these individuals feed combined with the explosion of populations in times of outbreak have been seen to exert some of the biggest pressures on coral reefs to date. Following recent episodes of crown-of-thorns starfish (COTS) outbreaks, research on the organism has become increasingly prevalent on the scientific …

Patterns Of Fecal Progestagens, Estrogens, And Androgens Associated With Reproduction In Blue-Throated Piping Guans (Pipile Cumanensis), Leslie Ann Sterling, Helen Clawitter, Corinne P. Kozlowski, Michael Macek, Anne Tieber

Undergraduate Research Symposium Posters

While fecal hormone analyses are routinely employed to monitor reproduction in mammals, few studies have used these techniques for monitoring reproductive events in birds. This study describes the endocrine patterns associated with reproduction in the blue-throated piping guan (Pipile cumanensis), a less threatened relative of the critically endangered Trinidad piping guan (P. pipile). Fecal samples were collected approximately once a week for 3 years from seven female guans and six male guans at the Saint Louis Zoo. Concentrations of fecal progestagens, estrogens, and androgens were quantified using commercially available enzyme immunoassays. Baseline progestagen concentrations for females …