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Articles 1021 - 1050 of 1506

Full-Text Articles in Environmental Studies

Helping Farmers And Reducing Car Crashes: The Surprising Benefits Of Predators, Christopher O'Bryan, Eve Mcdonald-Madden, James Watson, Neil Carter Apr 2018

Helping Farmers And Reducing Car Crashes: The Surprising Benefits Of Predators, Christopher O'Bryan, Eve Mcdonald-Madden, James Watson, Neil Carter

Human-Environment Systems Research Center Faculty Publications and Presentations

Humans may be Earth’s apex predator, but the fleeting shadow of a vulture or the glimpse of a big cat can cause instinctive fear and disdain. But new evidence suggests that predators and scavengers are much more beneficial to humans than commonly believed, and that their loss may have greater consequences than we have imagined.


A Socioeconomic Valuation Of Urban Wetland Ecosystems And Policy Recommendation For College Lake, Michael Dunmyer Apr 2018

A Socioeconomic Valuation Of Urban Wetland Ecosystems And Policy Recommendation For College Lake, Michael Dunmyer

Student Scholar Showcase

The current dilemma of College Lake offers a unique case study for how urban ecosystems can not only subsist within cities but provide pivotal functions for them as well. With the potential for a dam-breaching storm event increasing in possibility with each passing year, concerns regarding the structural integrity of the College Lake dam in Lynchburg, VA have arisen. Such concerns have led the City of Lynchburg to consider reinforcement or removal of the dam in order to mitigate flood risks along the Blackwater Creek floodplain. Since its formation following the installation of the Depression-era dam, however, College Lake has …


Executive Summary_Financing Climate Resilience: Mobilizing Resources And Incentives To Protect Boston From Climate Risks, David L. Levy, Rebecca Herst Apr 2018

Executive Summary_Financing Climate Resilience: Mobilizing Resources And Incentives To Protect Boston From Climate Risks, David L. Levy, Rebecca Herst

Sustainable Solutions Lab

This report explores the challenges of financing climate-resilience investments in the Boston region. As risks from storm surge, sea level rise, and extreme weather increase, there is growing urgency for pre-disaster investments to reduce physical risk, reduce social vulnerability, and increase capacity for emergency response and disaster recovery. However, these investments face significant barriers, including market failures, capital budget constraints, and misaligned incentives. The report identifies a range of funding mechanisms appropriate at different scales, including general obligation bonds, resilience fees, property tax surcharges, stormwater fees, tax increment financing, business improvement districts, and insurance-based funding. It evaluates these mechanisms using …


A Disappearing Island: An Impact Assessment Of Coastal Erosion On The Mnemba Island House Reef, Zanzibar, Kat Grellman Apr 2018

A Disappearing Island: An Impact Assessment Of Coastal Erosion On The Mnemba Island House Reef, Zanzibar, Kat Grellman

Independent Study Project (ISP) Collection

Sedimentation is one of the greatest threats reefs face today due to climate changeinduced sea level rise. Mnemba Island has experienced rampant coastal erosion as a combined result of global processes and local anthropogenic impacts, which has in turn caused severe reef degradation. The house reef was surveyed over a 3-week period to determine the amount of sediment deposited on the reef and the impact of this sedimentation on coral reef health. Sediment traps were deployed to measure the sediment flux rate. The line-intercept transect method was used to measure the benthos cover of the reef and point-transect method was …


Final Paper For Posc370: National Energy Strategy, Courtney Trott Apr 2018

Final Paper For Posc370: National Energy Strategy, Courtney Trott

Political Science Student Papers and Posters

This paper aims to analyze the energy sources and needs of Canada. I worked off of current data and policies to make predictions and suggestions for the next 20 years in the areas of energy production and policy for Canada. In studying Canada’s energy policies and programs, there is a lot to be gained when thinking international energy policy and production.


Japan National Energy Strategy: Energy Politics - Posc 370, Peter Wong Apr 2018

Japan National Energy Strategy: Energy Politics - Posc 370, Peter Wong

Political Science Student Papers and Posters

In this paper is my energy strategy for Japan, with the purpose to: provide broad strategic objectives, identify and explain the policies chosen, mobilization of political support as well as consideration of Japan’s energy resources. Additionally the paper considers economic and political feasibility, and theaters of conflict that may arise. The paper uses the knowledge and skills of looking at national energy politics and strategies learned in class.


Effects Of Beaver Dams On Urban Stream Hydraulic Response During Storm Events, Erin Poor Apr 2018

Effects Of Beaver Dams On Urban Stream Hydraulic Response During Storm Events, Erin Poor

Environmental Science and Management Professional Master's Project Reports

Urbanization of landscapes alters watershed hydrology, leading to changes in the natural flow regime of local streams. Runoff from impervious surfaces and routing of stormwater can cause a rapid increase in the volume and velocity of streamflow. This is observed in the hydrograph as a steep rising limb, followed by a high peak, and a rapid falling limb. This rapidly varying streamflow, often referred to as flashiness, can increase erosive forces on the channel bed and banks, leading to channel incision and bank erosion. In areas where the hydrologic regime is less impacted by humans, beaver dams and ponds attenuate …


Financing Climate Resilience: Mobilizing Resources And Incentives To Protect Boston From Climate Risks, David L. Levy, Rebecca Herst Apr 2018

Financing Climate Resilience: Mobilizing Resources And Incentives To Protect Boston From Climate Risks, David L. Levy, Rebecca Herst

Sustainable Solutions Lab

This report explores the challenges of financing climate-resilience investments in the Boston region. As risks from storm surge, sea level rise, and extreme weather increase, there is growing urgency for pre-disaster investments to reduce physical risk, reduce social vulnerability, and increase capacity for emergency response and disaster recovery. However, these investments face significant barriers, including market failures, capital budget constraints, and misaligned incentives. The report identifies a range of funding mechanisms appropriate at different scales, including general obligation bonds, resilience fees, property tax surcharges, stormwater fees, tax increment financing, business improvement districts, and insurance-based funding. It evaluates these mechanisms using …


Ethically Sourced Vanilla: Certifications In The Production Of Vanilla In The Sava Region Of Madagascar, Maisie Campbell Apr 2018

Ethically Sourced Vanilla: Certifications In The Production Of Vanilla In The Sava Region Of Madagascar, Maisie Campbell

Independent Study Project (ISP) Collection

Vanilla is an orchid whose beans are harvested after ten months on the vine. About eighty percent of the world’s vanilla is produced in Madagascar and the SAVA region is the capital of vanilla production within the country. The changing demand of vanilla, damage from cyclones, and the three-year development of the vanilla plants before they begin producing beans causes a boom and bust cycle of prices of vanilla. Some organizations have tried to ameliorate the problems these cycles and low prices pose to vanilla farmers by creating certifications for companies that promise that they will not pay less than …


Spatial Analysis Of Cirques From Three Regions Of Iceland: Implications For Cirque Formation And Palaeoclimate, Heather A. Ipsen, Sarah M. Principato, Rachael E. Grube, Jessica F. Lee Mar 2018

Spatial Analysis Of Cirques From Three Regions Of Iceland: Implications For Cirque Formation And Palaeoclimate, Heather A. Ipsen, Sarah M. Principato, Rachael E. Grube, Jessica F. Lee

Environmental Studies Faculty Publications

This study is a quantitative analysis of cirques in three regions of Iceland: Tröllaskagi, the East Fjords and Vestfirðir. Using Google Earth and the National Land Survey of Iceland Map Viewer, we identified 347 new cirques on Tröllaskagi and the East Fjords region, and combined these data with 100 cirques previously identified on Vestfirðir. We used ArcGIS to measure length, width, aspect, latitude and distance to coastline of each cirque. Palaeo‐equilibrium‐line altitudes (palaeo‐ELAs) of palaeo‐cirque glaciers were calculated using the altitude‐ratio method, cirque‐floor method and minimum‐point method. The mean palaeo‐ELA values in Tröllaskagi, the East Fjords and Vestfirðir are 788, …


A Naturalist’S Guide To The Great Plains, Paul A. Johnsgard Mar 2018

A Naturalist’S Guide To The Great Plains, Paul A. Johnsgard

Zea E-Books Collection

This book documents nearly 500 US and Canadian locations where wildlife refuges, nature preserves, and similar properties protect natural sites that lie within the North American Great Plains, from Canada’s Prairie Provinces to the Texas-Mexico border. Information on site location, size, biological diversity, and the presence of especially rare or interesting flora and fauna are mentioned, as well as driving directions, mailing addresses, and phone numbers or internet addresses, as available. US federal sites include 11 national grasslands, 13 national parks, 16 national monuments, and more than 70 national wildlife refuges. State properties include nearly 100 state parks and wildlife …


Development And Field Validation Of An Environmental Dna (Edna) Assay For Invasive Clams Of The Genus Corbicula, Dominique A. Cowart, Mark A. Renshaw, Crysta Gantz, John Umek, Sudeep Chandra, Scott P. Egan, David M. Lodge, Eric R. Larson Mar 2018

Development And Field Validation Of An Environmental Dna (Edna) Assay For Invasive Clams Of The Genus Corbicula, Dominique A. Cowart, Mark A. Renshaw, Crysta Gantz, John Umek, Sudeep Chandra, Scott P. Egan, David M. Lodge, Eric R. Larson

Environmental Science and Management Faculty Publications and Presentations

Early detection is imperative for successful control or eradication of invasive species, but many organisms are difficult to detect at the low abundances characteristic of recently introduced populations. Environmental DNA (eDNA) has emerged as a promising invasive species surveillance tool for freshwaters, owing to its high sensitivity to detect aquatic species even when scarce. We report here a new eDNA assay for the globally invasive Asian clam Corbicula fluminea (Müller, 1774), with field validation in large lakes of western North America. We identified a candidate primer pair for the Cytochrome c oxidase subunit 1 (COI) gene for C. fluminea. We …


Plant Community Composition And Structure Monitoring For Scotts Bluff National Monument, 2017 Data Report, Ryan Manuel Feb 2018

Plant Community Composition And Structure Monitoring For Scotts Bluff National Monument, 2017 Data Report, Ryan Manuel

United States National Park Service: Publications

Abstract

This report presents the results of vegetation monitoring efforts in 2017 at Scotts Bluff National Monument (SCBL) by the Northern Great Plains Inventory and Monitoring Network (NGPN) and Northern Great Plains Fire Ecology Program (NGPFire).

During the seventh full year of field work, crew members from NGPN visited eight long-term monitoring plots on May 22-25, 2017 to collect data on the plant communities at SCBL. This is part of a long-term monitoring effort to better understand the condition of the vegetation at SCBL. NGPN staff captured data relating to species richness, herb-layer height, abundance of individual native and non-native …


Benefit Relevant Indicators: Ecosystem Services Measures That Link Ecological And Social Outcomes, Lydia Olander, Robert J. Johnston, Heather Tallis, James S. Kagan, Lynn A. Maguire, Stephen Polasky, Dean Urban, James Boyd, Lisa Wainger, Margaret A. Palmer Feb 2018

Benefit Relevant Indicators: Ecosystem Services Measures That Link Ecological And Social Outcomes, Lydia Olander, Robert J. Johnston, Heather Tallis, James S. Kagan, Lynn A. Maguire, Stephen Polasky, Dean Urban, James Boyd, Lisa Wainger, Margaret A. Palmer

Institute for Natural Resources Publications

There is a growing movement in government, environmental non-governmental organizations and the private sector to include ecosystem services in decision making. Adding ecosystem services into assessments implies measuring how much a change in ecological conditions affects people, social benefit, or value to society. Despite consensus around the general merit of accounting for ecosystem services, systematic guidance on what to measure and how is lacking. Current ecosystem services assessments often resort to biophysical proxies (e.g., area of wetland in a floodplain) or even disregard services that seem difficult to measure. Valuation, an important tool for assessing trade-offs and comparing outcomes, is …


Acoustic Surveys Of Bats At Northern Great Plains Parks And Preliminary Results From 2014-16, Daniel S. Licht Feb 2018

Acoustic Surveys Of Bats At Northern Great Plains Parks And Preliminary Results From 2014-16, Daniel S. Licht

United States National Park Service: Publications

Executive Summary

From 2014-16, the Northern Great Plains Inventory & Monitoring Network (Network)—in collaboration with the Midwest Regional Biologist—used acoustic methods to monitor bat populations at 12 Network parks. Six parks were monitored using the nascent North American Bat Monitoring Program (NABat) framework. Six other parks did not meet a priori criteria for inclusion in NABat so they were monitored using similar methods, but a non-systematic sampling frame.

Fifty-five NABat stations were established along with 62 non-NABat stations. Stations were typically monitored for 4-7 nights each year using equipment that records the echolocation calls of bats. Fourteen mobile survey routes …


Environmental Studies 129: Water Policy In The Western U.S., Costanza Rampini Jan 2018

Environmental Studies 129: Water Policy In The Western U.S., Costanza Rampini

Faculty Publications, Environmental Studies

Water, or lack of it, is the defining characteristic of development in the Western United States. Using multiple analytical frameworks, including history, law, economics, environmental science, and sociology, we will investigate the interrelationships of key policies, players, and projects involved in Western water. More specifically, we will critically examine how important federal, state, and local water policies arose and how they affect different stakeholder groups (e.g., irrigators, environmentalists, indigenous peoples, the local citizenry, government entities, public water resource agencies). We will also learn about how stakeholder values and corresponding water policies have changed, or failed to change, over time. Case …


University Of Richmond Sustainability Plan 2019-2025, University Of Richmond Jan 2018

University Of Richmond Sustainability Plan 2019-2025, University Of Richmond

Plans

University of Richmond’s Sustainability Plan is a blueprint for how we as a campus community will achieve a long-term vision of integrating sustainability into the fabric of the University. The result of a yearlong collaborative effort involving hundreds of stakeholders, the plan lays out clear steps to bolster the development of sustainability in the curriculum, support environmental management of our campus, promote a culture of sustainability, and further integrate stewardship into administrative policies and procedures. The time frame for the goals, strategies, and actions articulated in this plan is 2019-2025.


Water Scarcity: Sudan, Catherine Priebe Jan 2018

Water Scarcity: Sudan, Catherine Priebe

Global Issues in Public Health

Water scarcity is an environmental global problem that will only become more pressing as time goes on. It is a public health issue that affects every continent, although certain areas of the world are facing more serious water scarcity than others such as Sudan. Populations that are more vulnerable to the effects of water scarcity are the poor, women, children, and those living in areas of political unrest. For example, South Sudan’s urban water systems have been damaged during recent warfare. Water scarcity is also an issue that disproportionately affects women who are forced from a young age to travel …


Sr. Judith: Community And Environmental, Abigail Brown Jan 2018

Sr. Judith: Community And Environmental, Abigail Brown

Ask a Sister: Interview Wisdom from Catholic Women Religious

This paper includes an interview with Sr. Judith, a woman religious who has worked with environmental issues for the majority of her time as a woman religious. It highlights what she has worked on to improve the environment and how to keep our Earth cleaner in the future.


Environmental Studies 117: Human Ecology, Costanza Rampini Jan 2018

Environmental Studies 117: Human Ecology, Costanza Rampini

Faculty Publications, Environmental Studies

This is a required course in the major, which covers the diversity and similarity of human adaptation, cultural evolution, cultural change and environmental modification in African, Asiatic, Oceanic and Latin American cultural groups. The emphasis is on traditional non-Western conservation practices and their lessons for the modern-day resource manager. ENVS 117 is a core requirement for majors. Students interested in other cultures and world regions, and in particular international development, will find this course not only interesting, but useful.


University Of Richmond 2018 Climate Action Plan Update, Robert Andrejewski Jan 2018

University Of Richmond 2018 Climate Action Plan Update, Robert Andrejewski

Reports

In 2007, University of Richmond (UR) signed onto the the American College and University Presidents’ Climate Commitment, pledging to become carbon neutral by 2050. Three years later, UR published its first Climate Action Plan, a framework that committed the university to reduce its greenhouse gas (GHG) emissions 30% below 2009 levels by 2020 and 65% by 2035, on its way toward eliminating net carbon emissions.

This Progress Report and GHG Inventory will explain UR’s emission calculation methodologies, provide a detailed analysis of the inventory, and document UR’s current GHG current footprint.

University of Richmond’s Climate Action Plan aims to provide …


Global Climate Change I-Ii, Kendall Barrett Sooter, Dione Rossiter, Costanza Rampini Jan 2018

Global Climate Change I-Ii, Kendall Barrett Sooter, Dione Rossiter, Costanza Rampini

Faculty Publications, Environmental Studies

Many different scientific observations and measurements indicate that Earth is experiencing global-scale changes in climate, i.e., in the long-term distributions of temperature, cloud cover, precipitation, and extreme weather events. Scientific consensus considers most these changes to be caused or accelerated by human activities. The economic, ecological, social, and cultural challenges caused by global climate change will affect everyone on the planet, and are very likely to have disproportionate impacts on developing nations. In this course, we will study global climate change from an interdisciplinary perspective, incorporating natural and social science approaches to understanding processes and effects. We will study the …


Monitoring And Evaluating Malawi Youth Conservation Engagement After Community-Based Environmental Education Workshops, Stefanie Kramer Jan 2018

Monitoring And Evaluating Malawi Youth Conservation Engagement After Community-Based Environmental Education Workshops, Stefanie Kramer

Environmental Science and Management Professional Master's Project Reports

This project addressed Peace Corps Malawi’s need to redevelop and implement environmental education workshops using a community-based approach, monitored project outcomes from these workshops, and provided an evaluation of strengths and areas for improvement of the environmental education workshop program.


Sustainability At Sit: A Look At The Past, A Plan For The Future, Taliesin Haugh Jan 2018

Sustainability At Sit: A Look At The Past, A Plan For The Future, Taliesin Haugh

Capstone Collection

Climate change threatens our world and way of life. Intelligent development and investment could mitigate the worst threats of climate change, while simultaneously providing continuous growth for the global economy. The New Climate Economy proposes efforts to combat this ecological collapse that would result in $30 trillion in new annual economic growth by 2030. Stockholm Resilience Center agrees, giving a framework based on global ecological systems that calls for five critical tasks that can bring growth and stability: Renewable energy

Sustainable local food production

New development models, based on what has worked globally

Reduction of wealth inequity

Education, health, and …


Stormwater Capture In The Built Watershed: Fostering Public Awareness Of Water Conservation Through A Parcel-Level Approach To Stormwater Management, Benjamin Rigby Jan 2018

Stormwater Capture In The Built Watershed: Fostering Public Awareness Of Water Conservation Through A Parcel-Level Approach To Stormwater Management, Benjamin Rigby

Pitzer Senior Theses

As California contends with climate change and more extreme cycles of drought and deluge, water management agencies and conservation groups are looking towards solutions to the decreasing reliability of imported water supplies. Stormwater has historically been perceived as a threat to development but when captured properly, it presents a resource that can augment local water supplies. Solutions to water supply issues in California have traditionally employed technical and centrally controlled methods for importing water, but there is a growing understanding that parcel-level capture through vegetated swales presents an opportunity for reducing the impact that development has on California’s hydrology. Vegetated …


Climate Change, Cattle, And The Challenge Of Sustainability In A Telecoupled System In Africa, Tara S. Easter, Alexander K. Killion, Neil H. Carter Jan 2018

Climate Change, Cattle, And The Challenge Of Sustainability In A Telecoupled System In Africa, Tara S. Easter, Alexander K. Killion, Neil H. Carter

Ecology, Evolution, and Behavior

Information, energy, and materials are flowing over greater distances than in the past, changing the structure and feedbacks within and across coupled human and natural systems worldwide. The telecoupling framework was recently developed to understand the feedbacks and multidirectional flows characterizing social and environmental interactions between distant systems. We extend the application of the telecoupling framework to illustrate how flows in beef affect and are affected by social-ecological processes occurring between distant systems in Africa, and how those dynamics will likely change over the next few decades because of climate-induced shifts in a major bovine disease, trypanosomosis. The disease is …


Effects Of Variable Density Thinning On Spatial Patterns Of Overstory Trees In Mt. Hood National Forest, Emma Huston Jan 2018

Effects Of Variable Density Thinning On Spatial Patterns Of Overstory Trees In Mt. Hood National Forest, Emma Huston

Environmental Science and Management Professional Master's Project Reports

Variable density thinning (VDT) is a method of restoration thinning that attempts to increase ecosystem resilience and spatial heterogeneity in forest stands to more closely resemble mosaic-like patterns characteristic of late-successional forests, which consist of clusters of multiple trees, individual trees, and gaps. This study examines the spatial patterning of overstory trees resulting from VDT of conifer forests in Mt. Hood National Forest in the western Cascade Mountains and compares these patterns with reference conditions. Stem maps were created from field surveys of study plots within one mature stand and six thinned stands designated as Late-Successional Reserve (LSR) with varying …


Long-Term Managed Flooding To Control Invasive Phalaris Arundinacea L. And Help Restore Native Vegetation In An Urban Palustrine Wetlands Ecosystem, Robert P. Lascheck Jan 2018

Long-Term Managed Flooding To Control Invasive Phalaris Arundinacea L. And Help Restore Native Vegetation In An Urban Palustrine Wetlands Ecosystem, Robert P. Lascheck

Environmental Science and Management Professional Master's Project Reports

We sought to determine the effects of 13 years of hydrologic management on the wetland plant community in Smith and Bybee Wetlands Natural Area (SBW), an 809 ha palustrine wetland complex in north Portland, Oregon. Previous management efforts resulted in an altered hydrologic regime; historically high water levels in spring and low water levels in fall were replaced by persistent water levels with minimal annual variations. A water control structure was installed in 2003 to better approximate historic seasonal hydrologic changes to reduce invasive Phalaris arundinacea (reed canarygrass) cover and promote native wetland vegetation growth. Vegetation monitoring has been carried …


Sustainability-Efficiency Paradox: The Efficacy Of State Energy Plans In Building A More Sustainable Energy Future, Austin Zimmerman Jan 2018

Sustainability-Efficiency Paradox: The Efficacy Of State Energy Plans In Building A More Sustainable Energy Future, Austin Zimmerman

Pitzer Senior Theses

State energy plans are created at the request of a sitting governor or State Legislature in order to provide guidance set goals for the state’s energy sector. These plans will be critical indicators of energy trends such as the future market share of coal, natural gas, and renewables. If the future of energy in the United States is to be remotely sustainable, low-carbon policies must headline state plans. The strength of a state’s energy plan in terms of sustainability is directly related to that state’s willingness to prioritize and commit to incorporating energy sources that produce negligible carbon emissions. Questions …


Assessing Effort Shifts And Familial Succession In Oregon’S Nearshore Fisheries, Bryn Ellen Hudson Jan 2018

Assessing Effort Shifts And Familial Succession In Oregon’S Nearshore Fisheries, Bryn Ellen Hudson

Environmental Science and Management Professional Master's Project Reports

Since the industrial revolution, natural resource systems have rapidly modernized and globalized. Commercial fishing industries have expanded and optimized resource extraction but have often times exceeded sustainable levels of harvest. In the Pacific Northwestern United States, the commercial fishing industry is one of particular economic and cultural importance. Due to reduced yield of many native fish stocks, marine reserves have been implemented in Oregon’s nearshore waters in an effort to conserve biodiversity. While spatial closures of marine reserves seek to preserve and stabilize Oregon’s ocean ecosystems, adverse socioeconomic implications are inevitably created when profitable waters are set aside. A main …