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Articles 871 - 900 of 1506

Full-Text Articles in Environmental Studies

Political Will, Fall/Winter 2018, Issue 37 Sep 2019

Political Will, Fall/Winter 2018, Issue 37

Sustain Magazine

No abstract provided.


Health Preferences And Culturally Appropriate Strategies To Reduce Bear Bile Demand In Northern Vietnam, Shannon Randolph, Laura Zhang, Lena Tran, Mai Nguyen, Kimberley Ha Sep 2019

Health Preferences And Culturally Appropriate Strategies To Reduce Bear Bile Demand In Northern Vietnam, Shannon Randolph, Laura Zhang, Lena Tran, Mai Nguyen, Kimberley Ha

EnviroLab Asia

Animal products, such as pangolin scales, rhinoceros horns, tiger bones, and bear bile have been used in East Asian traditional medicine (TM) for more than 2,000 years. However, markets for medicinal wildlife products have expanded dramatically in countries like China and Vietnam in recent decades where economic prosperity has enabled a larger proportion of the population to afford wildlife products (Olmedo et al. 2017). Related new farming and commercialization practices to meet growing international demand pose environmental and human health risks. Animal products also symbolize shared cultural and historical medical practices that are distinct from the dominant Western medical model.


Nonlinear Reaction–Diffusion Process Models Improve Inference For Population Dynamics, Xinyi Lu, Perry J. Williams, Mevin B. Hooten, James A. Powell, Jamie N. Womble, Michael R. Bower Sep 2019

Nonlinear Reaction–Diffusion Process Models Improve Inference For Population Dynamics, Xinyi Lu, Perry J. Williams, Mevin B. Hooten, James A. Powell, Jamie N. Womble, Michael R. Bower

United States National Park Service: Publications

Partial differential equations (PDEs) are a useful tool for modeling spatiotemporal dynamics of ecological processes. However, as an ecological process evolves, we need statistical models that can adapt to changing dynamics as new data are collected. We developed a model that combines an ecological diffusion equation and logistic growth to characterize colonization processes of a population that establishes long-term equilibrium over a heterogeneous environment. We also developed a homogenization strategy to statistically upscale the PDE for faster computation and adopted a hierarchical framework to accommodate multiple data sources collected at different spatial scales. We highlighted the advantages of using a …


Permafrost Hydrology Drives The Assimilation Of Old Carbon By Stream Food Webs In The Arctic, Jonathan A. O’Donnell, Michael P. Carey, Joshua C. Koch, Xiaomei Xu, Brett A. Poulin, Jennifer Walker, Christian E. Zimmerman Sep 2019

Permafrost Hydrology Drives The Assimilation Of Old Carbon By Stream Food Webs In The Arctic, Jonathan A. O’Donnell, Michael P. Carey, Joshua C. Koch, Xiaomei Xu, Brett A. Poulin, Jennifer Walker, Christian E. Zimmerman

United States National Park Service: Publications

Permafrost thaw in the Arctic is mobilizing old carbon (C) from soils to aquatic ecosystems and the atmosphere. Little is known, however, about the assimilation of old C by aquatic food webs in Arctic watersheds. Here, we used C isotopes (d13C, D14C) to quantify C assimilation by biota across 12 streams in arctic Alaska. Streams spanned watersheds with varying permafrost hydrology, from ice-poor bedrock to ice-rich loess (that is, yedoma). We measured isotopic content of (1) C sources including dissolved organic C (DOC), dissolved inorganic C (DIC), and soil C, and (2) stream biota, including benthic biofilm and macroinvertebrates, and …


Social Vulnerability To Large Wildfires In The Western Usa, Palaiologos Palaiologou, Alan A. Ager, Max Nielsen-Pincus, Cody Evers, Michelle A. Day Sep 2019

Social Vulnerability To Large Wildfires In The Western Usa, Palaiologos Palaiologou, Alan A. Ager, Max Nielsen-Pincus, Cody Evers, Michelle A. Day

Environmental Science and Management Faculty Publications and Presentations

Federal land managers in the US can be informed with quantitative assessments of the social conditions of the populations affected by wildfires originating on their administered lands in order to incorporate and adapt their management strategy to achieve a more targeted prioritization of community wildfire protection investments. In addition, these assessments are valuable to socially vulnerable communities for quantifying their exposure to wildfires originating on adjacent land tenures. We assessed fire transmission patterns using fire behavior simulations to understand spatial variations across three diverse study areas (North-central Washington; Central California; and Northern New Mexico) to understand how different land tenures …


Key Elements Of Environmental Justice In The Geothermal Power Plant Resistance Movement, Priyo Fajar Santoso, Bevaola Kusumasari Sep 2019

Key Elements Of Environmental Justice In The Geothermal Power Plant Resistance Movement, Priyo Fajar Santoso, Bevaola Kusumasari

Jurnal Politik

Geothermal energy is currently considered as an environmentally friendly, renewable energy source. However, based on empirical data from various countries, geothermal energy production often results socioecological losses for the host community. Various environmental justice movements have emerged to protect environment by protestesting and providing a counter discourse against the dominant perception that geothermal energy is renewable and environmentally friendly. As Indonesian government put more effort to develop more geothermal power thermal across the country, more reactions also emerge and surprisingly include the critical one. This article aims to look at one of the critical reaction from community to counter the …


Pollution Causes And Prevention Measures In Bohai Sea, Yiqiao Wang Aug 2019

Pollution Causes And Prevention Measures In Bohai Sea, Yiqiao Wang

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.


The Impact Of Imo's Global Sulphur Cap The Shipping Industry And The Latter's Countermeasure, Jorge Morales Aug 2019

The Impact Of Imo's Global Sulphur Cap The Shipping Industry And The Latter's Countermeasure, Jorge Morales

World Maritime University Dissertations

No abstract provided.


Our Envirome, Spring/Summer 2019, Issue 40 Aug 2019

Our Envirome, Spring/Summer 2019, Issue 40

Sustain Magazine

No abstract provided.


Plastic Pollution, Fall/Winter 2019, Issue 39.3 Aug 2019

Plastic Pollution, Fall/Winter 2019, Issue 39.3

Sustain Magazine

No abstract provided.


Plastic Pollution, Fall/Winter 2019, Issue 39.2 Aug 2019

Plastic Pollution, Fall/Winter 2019, Issue 39.2

Sustain Magazine

No abstract provided.


Plastic Pollution, Fall/Winter 2019, Issue 39 Aug 2019

Plastic Pollution, Fall/Winter 2019, Issue 39

Sustain Magazine

No abstract provided.


Do Corporate Owned Adaptive Learning Platforms Perpetuate Banking Style Learning? Integrating Technology For Activism Into Transformational Sustainability Education, Tina M. Garner Aug 2019

Do Corporate Owned Adaptive Learning Platforms Perpetuate Banking Style Learning? Integrating Technology For Activism Into Transformational Sustainability Education, Tina M. Garner

Leadership for Sustainability Education Comprehensive Papers

We live in a world that tends to be controlled by corporations. The public school system should be wary of the problems that corporate control has on education. Even though public schools should not have corporate influence, the fact remains that they do, and this perpetuates Freire's banking style learning. Through time, the corporate influence in education was through educational materials such as book sales. Since the decline of the use of books and the growth of the use of technologies, corporations have followed suit through the sales of Adaptive Learning Platforms. Through leveraging the technology which students enjoy using, …


Social Interactions Do Not Drive Territory Aggregation In A Grassland Songbird, S.K. Winnicki, S.M. Munguia, E.J. Williams, W.A. Boyle Aug 2019

Social Interactions Do Not Drive Territory Aggregation In A Grassland Songbird, S.K. Winnicki, S.M. Munguia, E.J. Williams, W.A. Boyle

United States National Park Service: Publications

Understanding the drivers of animal distributions is a fundamental goal of ecology and informs habitat management. The costs and benefits of colonial aggregations in animals are well established, but the factors leading to aggregation in territorial animals remain unclear. Territorial animals might aggregate to facilitate social behavior such as (1) group defense from predators and/or parasites, (2) cooperative care of offspring, (3) extra-pair mating, and/or (4) mitigating costs of extra-pair mating through kin selection. Using experimental and observational methods, we tested predictions of all four hypotheses in a tallgrass prairie in northeast Kansas, United States. Grasshopper Sparrow (Ammodramus savannarum) males …


Vegetation Monitoring At Homestead National Monument Of America, Nebraska, 1998–2017, Sherry A. Leis Aug 2019

Vegetation Monitoring At Homestead National Monument Of America, Nebraska, 1998–2017, Sherry A. Leis

United States National Park Service: Publications

Executive Summary

The Heartland Inventory and Monitoring Network has sampled permanent monitoring sites in three vegetation community types (restored prairie, successional forest, and bur oak forest) at Homestead National Monument of America since 1998 (includes nine sample years). Network scientists record each species, aerial cover estimates of ground flora, diameter at breast height of midstory and overstory trees, and tree regeneration frequency (tree seedlings and saplings) within these permanent sites.

The park has experienced similar periods of drought and wetness through the monitoring record. Ground cover estimates indicate that prairie litter and bare ground are negatively related; prescribed fire cycles …


The Spirulina Strategy, Singapore Management University Aug 2019

The Spirulina Strategy, Singapore Management University

Perspectives@SMU

This is an adapted version of the SMU Case, “Navigating an Eternal Ocean: EnerGaia’s Emergent Strategy in the Market for Spirulina" written by Research Fellow Ryan Merrill and Assistant Professor Simon Schillebeeckx. To see the full case, please click on the following link: https://cmp.smu.edu.sg/case/3986

EnerGaia began life trying to address nutrition issues in the developing world. The prospect of profit is testing its founder to balance both or choose one over the other


Stable Isotope And Geochemical Characterization Of Nutrient Sources In The Big Creek Watershed Of Northwest Arkansas, Kelly Robin Sokolosky Aug 2019

Stable Isotope And Geochemical Characterization Of Nutrient Sources In The Big Creek Watershed Of Northwest Arkansas, Kelly Robin Sokolosky

Graduate Theses and Dissertations

The establishment of a concentrated animal-feeding operation (CAFO) in Newton County, Arkansas near Big Creek, a tributary of the Buffalo National River, has raised concern over potential degradation of water-quality in the watershed. In this study, isotopic tools were combined with standard geochemical approaches to characterize nutrient sources and dynamics in Big Creek. An isotopic and geochemical reference library of potential nutrient sources in the Big Creek watershed was established by direct sampling of representative potential sources, including septic-system effluent, poultry litter, swine and cattle manure, and CAFO waste lagoons. Representative nutrient sources and Big Creek stream samples were analyzed …


Apartment Residents' Understanding Of And Satisfaction With Water Savings Devices, David Farmer Aug 2019

Apartment Residents' Understanding Of And Satisfaction With Water Savings Devices, David Farmer

Electronic Theses and Dissertations

As the human population increases, the way we use and manage our supply of drinking water becomes even more important. The purpose of this study was to determine residents’ satisfaction level of and performance rating of new water savings devices installed in their apartments. Specifically the investigation focused on ratings of shower heads, kitchen faucet aerators, bath faucet aerators, and fill valve and flapper systems.

This quantitative survey included residents at 4 apartment complexes in Tennessee using a paper questionnaire (N = 626). The participants were grouped by age, ethnicity, gender, and whether or not they had experienced both nonrestrictive …


How Pennsylvanians Define Environmental Justice, Kayla Hofmann Jul 2019

How Pennsylvanians Define Environmental Justice, Kayla Hofmann

Sociology Summer Fellows

The Pennsylvania Department of Environmental Protection (DEP) defines an environmental justice area as any census tract that partially or wholly includes a 30 percent or greater minority population or 20 percent or more of a population living in poverty. However, little is known about how the average Pennsylvanian defines environmental justice, hindering our ability to determine whether the current definition is adequate. Using transcripts from nine listening sessions on the DEP’s tour of affected counties, I address 3 questions: (1) How do people define environmental justice? (2) What do people think are the most pressing issues in each county? And …


Like Father, Like Son: Modelling Masculinity For The Ethical Leadership Of President Theodore Roosevelt, Elizabeth Summerfield Jul 2019

Like Father, Like Son: Modelling Masculinity For The Ethical Leadership Of President Theodore Roosevelt, Elizabeth Summerfield

The Journal of Values-Based Leadership

President Theodore Roosevelt is frequently portrayed as a rugged, hypermasculine cowboy. But this depiction ignores the powerful modelling for masculine leadership provided by his father, Theodore Roosevelt senior. A closer examination of the private and public spheres that framed the latter’s life offers another route into understanding the ethical and rational motivations that characterised his progressive Presidency, not least in the area of natural resource management, where his policy innovations were both unprecedented and sustained over time. What emerges is a more complex portrait than the above stereotype, a leader who used his heart, head and experience to think and …


Renewable Energy Access And Resilience In Urban Developing Areas: Distributed Solar Networks And Peer-To-Peer Energy Trading In Puerto Rico, Pascale Bronder Jul 2019

Renewable Energy Access And Resilience In Urban Developing Areas: Distributed Solar Networks And Peer-To-Peer Energy Trading In Puerto Rico, Pascale Bronder

Harvey M. Applebaum ’59 Award

This senior essay under the Environmental Studies major at Yale University explores the environmental and social benefits of applying innovative technology to the energy sector. Three types of energy networks are analyzed, focusing on the use of distributed energy and peer to peer energy trading on a blockchain platform. The benefits of distributed renewable energy networks can most strongly be applied to locations in need of more reliable, resilient, and cost-effective electricity. Puerto Rico is a case study. Methods include analysis of U.S. Energy Information Administration and Census Bureau data as well as personal interviews with Puerto Rican energy developers. …


Evaluating Oyster Aquaculture’S Cost-Effectiveness As A Nitrogen Removal Best Management Practice – A Case Study Of The Delaware Inland Bays, Jefferson F. Flood Jun 2019

Evaluating Oyster Aquaculture’S Cost-Effectiveness As A Nitrogen Removal Best Management Practice – A Case Study Of The Delaware Inland Bays, Jefferson F. Flood

Journal of Ocean and Coastal Economics

Disease and overfishing have led to a dramatic decline in wild populations and subsequent harvests of the eastern oyster Crassostrea virginica over the past few decades in Delaware and other states along the Atlantic Coast. However, in addition to their value as food to consumers, oysters, whether wild populations or cultured stocks, can provide ecosystem services such as nutrient removal, which may result in localized water quality improvements. Consequently, recent policies in Delaware have sought to establish and grow an oyster aquaculture industry. However, a key challenge to achieving efficient levels of industry growth and water quality improvements is that …


Engaged Communication Scholarship For Environmental Justice: A Research Agenda, Chad Raphael Jun 2019

Engaged Communication Scholarship For Environmental Justice: A Research Agenda, Chad Raphael

Communication

As a discipline of crisis and care, environmental communication needs to address questions of environmental justice. This article argues that the most appropriate approach to studying environmental justice communication is engaged scholarship, in which academics collaborate with community partners, advocates, and others to conduct research. The article reviews prior engaged communication scholarship on environmental justice, and proposes four streams of future research, focused on news and information, deliberation and participation, campaigns and movements, and education and literacy.


Bird Monitoring At Homestead National Monument Of America, Nebraska, Status Report 2009–2017, David G. Peitz, Lloyd W. Morrison, Kristen L. Mecke Jun 2019

Bird Monitoring At Homestead National Monument Of America, Nebraska, Status Report 2009–2017, David G. Peitz, Lloyd W. Morrison, Kristen L. Mecke

United States National Park Service: Publications

Executive Summary

In 2009, the Heartland Inventory Monitoring Network initiated breeding bird surveys on Homestead National Monument of America, Nebraska, to address two objectives: (1) to monitor changes in bird community composition and abundance, and (2) to improve our understanding of relationships between breeding birds and habitat, and the effects of management actions on those relationships. This report evaluates trends in the park’s breeding bird populations in the context of trends observed within the North American Bird Conservation Initiative’s (NABCI) Central Mixed Grass Prairie Bird Conservation Region, the region in which the park is located. By doing so, we can …


Bird Monitoring At Herbert Hoover National Historic Site, Iowa, Status Report 2005–2017, David G. Peitz, Lloyd W. Morrison, Kristen L. Mecke Jun 2019

Bird Monitoring At Herbert Hoover National Historic Site, Iowa, Status Report 2005–2017, David G. Peitz, Lloyd W. Morrison, Kristen L. Mecke

United States National Park Service: Publications

Executive Summary

In 2005, the Heartland Inventory & Monitoring Network initiated breeding bird surveys on Herbert Hoover National Historic Site, Iowa, to address two objectives: (1) to monitor changes in bird community composition and abundance, and (2) to improve our understanding of relationships between breeding birds and habitat, and the effects of management actions on those relationships. This report evaluates trends in the park’s breeding bird populations in the context of trends observed within the North American Bird Conservation Initiative’s (NABCI) Eastern Tallgrass Prairie Bird Conservation Region , the region in which the park is located. By doing so, we …


Teacher Perceptions Of Environmental Science In Rural Northwestern New Mexico Public Schools, Marie Quiahuitl Julienne May 2019

Teacher Perceptions Of Environmental Science In Rural Northwestern New Mexico Public Schools, Marie Quiahuitl Julienne

Organization, Information and Learning Sciences ETDs

In this study, I explored what teachers perceive as the factors that impact their teaching of environmental science in rural secondary level schools in northwestern New Mexico. I adapted Bronfenbrenner’s (1994) ecological systems model, based on four environmental subsystem levels (microsystem, mesosystem, exosystem, and macrosystem), as the conceptual framework to address the major research question of this study, and developed 18 interview questions to explore teachers’ perceptions of factors that influence their teaching of environmental science. I investigated the perspectives science teachers have about environmental science topics and the influences they perceive that affect how they teach environmental science, and …


Understanding Ngos And Their Effectiveness Through A Comparative Study Of Their Role In Redd+, Jessica Russo May 2019

Understanding Ngos And Their Effectiveness Through A Comparative Study Of Their Role In Redd+, Jessica Russo

Political Science Student Scholarship

This thesis explores the following question: what roles do NGOs play and how effective may they be in efforts at global governance? Through a comparative case study analysis of NGOs advocating for Reducing Emissions for Deforestation and forest Degradation (REDD+) and NGOs implementing REDD+ projects, specifically the Surui Forest Carbon Project located in the state of Rondônia, Brazil, I examine whether NGOs are more effective taking on the role as advocates or policy implementers. For this work, I will argue that independent of the multiplicity of roles that NGOs play, their effectiveness is a function of the level of their …


A Fishy Problem: Effects Of Atlantic Salmon Farming In The Pacific Ocean, Madeleine A. Griffith May 2019

A Fishy Problem: Effects Of Atlantic Salmon Farming In The Pacific Ocean, Madeleine A. Griffith

Student Theses 2015-Present

In this report, I explore the historical, climatological, economic, and ethical issues created by the contemporary industrial salmon farming practices off Pacific coast of the United States and Canada. Chapter 1 utilizes a variety of sources from Stephen Hume’s A Stain upon the Sea to Miller’s Living in the Environment, to examine the integral part salmon plays in both freshwater and marine ecosystems, the ecosystem services salmon contribute in wild and farmed settings, and the trends in salmon consumption around the world. Chapter 2 examines the historically relevant role salmon held among indigenous societies and how that role has changed …


Circumpolar Status Of Arctic Ptarmigan: Population Dynamics And Trends, Eva Fuglei, John-Andre ́ Henden, Chris T. Callahan, Olivier Gilg, Jannik Hansen, Rolf A. Ims, Arkady P. Isaev, Johannes Lang, Carol L. Mcintyre, Richard A. Merizon, Oleg Y. Mineev, Yuri N. Mineev, Dave Mossop, Olafur K. Nielsen, Erlend B. Nilsen, Ashild Ønvik Pedersen, Niels Martin Martin, Benoıt Sittler, Maria Hørnell Willebrand, Kathy Martin May 2019

Circumpolar Status Of Arctic Ptarmigan: Population Dynamics And Trends, Eva Fuglei, John-Andre ́ Henden, Chris T. Callahan, Olivier Gilg, Jannik Hansen, Rolf A. Ims, Arkady P. Isaev, Johannes Lang, Carol L. Mcintyre, Richard A. Merizon, Oleg Y. Mineev, Yuri N. Mineev, Dave Mossop, Olafur K. Nielsen, Erlend B. Nilsen, Ashild Ønvik Pedersen, Niels Martin Martin, Benoıt Sittler, Maria Hørnell Willebrand, Kathy Martin

United States National Park Service: Publications

Rock ptarmigan (Lagopus muta) and willow ptarmigan (L. lagopus) are Arctic birds with a circumpolar distribution but there is limited knowledge about their status and trends across their circumpolar distribution. Here, we compiled information from 90 ptarmigan study sites from 7 Arctic countries, where almost half of the sites are still monitored. Rock ptarmigan showed an overall negative trend on Iceland and Greenland, while Svalbard and Newfoundland had positive trends, and no significant trends in Alaska. For willow ptarmigan, there was a negative trend in mid-Sweden and eastern Russia, while northern Fennoscandia, North America and Newfoundland had no significant trends. …


Wish You Were Here, Janie Stamm, Janie I. Stamm May 2019

Wish You Were Here, Janie Stamm, Janie I. Stamm

Graduate School of Art Theses

The State of Florida is under threat from the effects of climate change. Rising sea levels are creeping up on to Florida’s coast, eroding the beaches and encroaching on heavily populated cities. Over my lifetime I will watch the water spill over the streets of my home town. I will watch the water flood the Everglades, pushing saltwater into freshwater habitats. I will watch the water begin to drown the state, taking Florida’s many little known histories along with it. This thesis serves as a document of Floridian life during the Anthropocene.

Within this thesis, I tell the story of …