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Across-Ecoregion Analysis Suggests A Hierarchy Of Ecological Filters That Regulate Recruitment Of A Globally Invasive Fish, Przemek G. Bajer, Timothy K. Cross, Joseph D. Lechelt, Christopher J. Chizinski, Michael J. Weber, Peter W. Sorensen 2017 University of Minnesota

Across-Ecoregion Analysis Suggests A Hierarchy Of Ecological Filters That Regulate Recruitment Of A Globally Invasive Fish, Przemek G. Bajer, Timothy K. Cross, Joseph D. Lechelt, Christopher J. Chizinski, Michael J. Weber, Peter W. Sorensen

Michael J Weber Dr

Aim -- Even successful invaders are abundant only in a fraction of locales they inhabit. One of the main challenges in invasion ecology is explaining processes that drive these patterns. We investigated recruitment of a globally invasive fish, common carp (Cyprinus carpio), across three ecoregions to determine the role of environmental characteristics, predatory communities and propagule pressure on the invasion process at coarse and fine spatial scales. Location -- Lakes across Northern Forest, Temperate Forest and Great Plains ecoregions of North America. Methods -- We used data from 567 lakes to model presence or absence of carp recruitment using environmental conditions (lake clarity ...


Relations Between Stream Chemistry, Fish Diversity, And Land Use In The Upper Little Miami Watershed, Connor J. Gilmour, Randy Howell, David Paulding, Charles W. Reynolds, Mark A. Gathany 2017 Cedarville University

Relations Between Stream Chemistry, Fish Diversity, And Land Use In The Upper Little Miami Watershed, Connor J. Gilmour, Randy Howell, David Paulding, Charles W. Reynolds, Mark A. Gathany

Mark A. Gathany, Ph.D.

Streams are susceptible to numerous threats to their water quality and biodiversity. In southwest Ohio a major driver of these impacts is associated with current agricultural practices and associated legacy effects. These structural and chemical impacts are known to affect biodiversity in these streams. The objective of this study was to document and examine relationships among land-use/land cover, stream chemistry, and fish diversity in the headwaters streams of the Little Miami Watershed. Three streams (Little Miami River, Massies Creek - North Fork, and Massies Creek - South Fork) were sampled in the upper headwaters as well as downstream. Air and water ...


Economic Evaluation Of Coastal Land Loss In Louisiana, Stephen R. Barnes, Craig Bond, Nicholas Burger, Kate Anania, Aaron Strong, Sarah Weilant, Stephanie Virgets 2017 Louisiana State University

Economic Evaluation Of Coastal Land Loss In Louisiana, Stephen R. Barnes, Craig Bond, Nicholas Burger, Kate Anania, Aaron Strong, Sarah Weilant, Stephanie Virgets

Journal of Ocean and Coastal Economics

Louisiana has lost approximately 1,880 square miles of land over the past eighty years. Projections suggest that in a future without action, the next fifty years could result in the loss of 1,750 additional square miles of land area. As land loss continues, a large portion of the natural and man-made capital stocks of coastal Louisiana will be at greater risk of damage, either from land loss or from the associated increase in storm damage. We estimate the replacement cost of capital stock directly at risk from land loss ranges from approximately $2.1 billion to $3.5 ...


Evaluation Of A Filtration Sorbent For Remediation Of Arsenic In Groundwater, Clement Do 2017 California State University - San Bernardino

Evaluation Of A Filtration Sorbent For Remediation Of Arsenic In Groundwater, Clement Do

Electronic Theses, Projects, and Dissertations

A commercially available product, PURA PhosLock, was identified and evaluated for use as a sorbent to remove dissolved arsenic (As) from drinking water. Although marketed as a product to remove phosphate in aquaria, it is composed of iron oxide hydroxide (i.e., FeO(OH)), which is also known to adsorb dissolved As species from water. Arsenic was measured using standard methods and Graphite Furnace Atomic Absorption Spectroscopy. A first rough filtration test was performed to see if the PhosLock adsorbed As well. About 50 g of PhosLock was used to filter 10 L of tap water containing 100 ppb As ...


Stable Isotopes In Atmospheric Water Vapour From Mauna Loa, Hawaii, 2016-2017, Joseph Galewsky 2017 University of New Mexico

Stable Isotopes In Atmospheric Water Vapour From Mauna Loa, Hawaii, 2016-2017, Joseph Galewsky

Earth and Planetary Sciences Faculty and Staff Publications

The isotopic composition of atmospheric water vapor (1H216O, H218O, and 1H2H16O) was continuously measured at the National Oceanic and Atmospheric Administration (NOAA) Mauna Loa Observatory (MLO) from April 8, 2016 through March 13, 2017 using Off-Axis Integrated Cavity Output Spectroscopy (OA-ICOS). The dataset has been carefully corrected for humidity-dependent biases and calibrated against the international VSMOW-SLAP scale to provide a precise, continuous, nearly yearlong dataset from a dynamic subtropical setting. The measurements are provided with 15-minute and 6-hourly resolution.


Embodied Carbon: A Framework For Prioritizing And Reducing Emissions In The Building Industry, Natalie C. Wheating 2017 The University of San Francisco

Embodied Carbon: A Framework For Prioritizing And Reducing Emissions In The Building Industry, Natalie C. Wheating

Master's Projects and Capstones

Global climate change is one of the most impactful environmental issues in modern times, and the construction industry is known to be one of the largest contributors to carbon emissions—one of the key causes of climate change. Embodied carbon emissions of buildings are an often overlooked, but significant, influencer of a building’s overall carbon footprint. This gives rise to the need for improved life cycle analysis of buildings and identification of opportunities to reduce the total carbon footprint of a building throughout its life cycle. This paper analyzes the current state of the building industry that limits the ...


The Relationship Between Wildfire Dynamics And Soil Carbon In Boreal Forests Of Alaska: Forest Management For Emissions Reduction In A Changing Climate, James D. Heaster 2017 University of San Francisco

The Relationship Between Wildfire Dynamics And Soil Carbon In Boreal Forests Of Alaska: Forest Management For Emissions Reduction In A Changing Climate, James D. Heaster

Master's Projects and Capstones

The boreal region of Alaska has vast forests spanning hundreds of thousands of square kilometers in the central portion of the state that is prone to large stand replacing summer wildfires. The region stores considerable quantities of terrestrial carbon sequestered in soil horizons down to 1 meter in depth that are strongly influenced by a combination of climate change, permafrost dynamics, vegetative composition, and fire regimes. Data and literature establish that the boreal region of Alaska (and the rest of the Arctic) has been steadily warming at a rate nearly double that of lower latitudes. This warming has resulted in ...


California Public Electric Vehicle Charging Stations’ Accessibility To Amenities: A Gis Network Analysis Approach, Jeremy Yun Li Chen 2017 University of San Francisco

California Public Electric Vehicle Charging Stations’ Accessibility To Amenities: A Gis Network Analysis Approach, Jeremy Yun Li Chen

Master's Projects and Capstones

In California, the number of electric vehicles (EVs) on the roads has been increasing over the past several years. As EVs continue to grow, additional electric vehicle charging stations (EVCSs) will be needed for EV drivers to utilize. However, before implementing EVCSs in the public, there are various criteria that need to be considered. One of these criteria is public EVCSs’ accessibility to amenities. When people are charging their EVs that require a significant amount of waiting time, having amenities nearby will provide them with the option to spend their time efficiently on worthwhile activities. To understand the accessibility of ...


Modeling The Effectiveness Of Riparian Restoration On Stream Shading In The Clackamas River Basin, Rachel Barksdale 2017 Portland State University

Modeling The Effectiveness Of Riparian Restoration On Stream Shading In The Clackamas River Basin, Rachel Barksdale

ESM Colloquium

Rivers and streams within the Clackamas River Basin are not currently meeting water quality standards in terms of temperature. The Clackamas River Basin Council (CRBC) designed a restoration program to address the thermal loading on behalf of Portland General Electric (PGE) in which native trees and shrubs are planted along streams to restore riparian canopy cover. Solar radiation can be blocked by restoring canopy cover and is an effective way to provide shade, as well as providing ancillary environmental benefits such as enhanced wildlife habitat and erosion control. Stream and vegetation data were collected at nine sites to model the ...


Escherichia Coli As A Water Quality Indicator Organism: A Case For Responsive, Science-Based Policy, Sarah M. McLarnan 2017 College of Saint Benedict and Saint John's University

Escherichia Coli As A Water Quality Indicator Organism: A Case For Responsive, Science-Based Policy, Sarah M. Mclarnan

All College Thesis Program

Water quality indicator organisms such as E. coli are used in the monitoring of recreational waterbodies to indicate the presence of fecal contamination. In 2009, a 1.5-mile stretch of Plum Creek in Stearns County, MN was classified by the Minnesota Pollution Control Agency as impaired due to high levels of E. coli. Citizen science to investigate the source of this contamination began in 2014 and with the addition of student research from CSB/SJU in 2016. This thesis presents results of the 2016 study, supplemented by summary of Minnesota water quality policy and recent research on indicator organisms. The ...


Modelling Cash Crop Growth In Tn, Spencer Weston 2017 University of Tennessee

Modelling Cash Crop Growth In Tn, Spencer Weston

University of Tennessee Honors Thesis Projects

No abstract provided.


Elucidating The Effects Of Thiamethoxam Neonicotinoid On Honey Bee Learning Using The Proboscis Extension Response, David J. Shepherd 2017 East Tennessee State University

Elucidating The Effects Of Thiamethoxam Neonicotinoid On Honey Bee Learning Using The Proboscis Extension Response, David J. Shepherd

Undergraduate Honors Theses

In this study, the effects of the neonicotinoid pesticide, thiamethoxam, are examined through the Proboscis Extension Response (PER) in honey bees (Apis mellifera). PER is a form of classical conditioning applied to honey bees through scent and reward association which quantifies learning rates. Results between groups treated with thiamethoxam did not differ significantly from untreated control groups. Potential reasons for these results are discussed. The method and experimental apparatus for testing the PER assay are also discussed.


Financial Assessment Of Agricultural Lands At Risk To Coastal Salt Marsh Migration In Relation To Climate Change Induced Sea Level Rise In Dorchester County, Maryland, Jewell Porter 2017 Clark University

Financial Assessment Of Agricultural Lands At Risk To Coastal Salt Marsh Migration In Relation To Climate Change Induced Sea Level Rise In Dorchester County, Maryland, Jewell Porter

International Development, Community and Environment (IDCE)

The increasing rate and effects of sea level rise is a major environmental concern in the Chesapeake Bay. This paper evaluates the impacts of rising sea level on coastal salt marshes and the surrounding agricultural lands at risk in Dorchester County, Maryland to build off existing environmental monitoring work performed by NOAA’s Sentinel Site Program. The results of the spatial analysis were used to estimate monetary benefits to incentivize farmers to protect these marshes by making their land available for marsh migration to occur. Looking at three scenarios of sea level rise and marsh migration, grain crops (corn, soybeans ...


Stratification Patterns In Central Nh Lakes, Tristan Ness, Brandon Boisvert 2017 Environmental Science and Policy

Stratification Patterns In Central Nh Lakes, Tristan Ness, Brandon Boisvert

Student Showcase of Excellence

From May to August of 2016, we conducted sampling and analyses of three bodies of water in central NH: Squam Lake, Ossipee Lake, and Lower Danforth Pond. This was done in order to identify and assess lake stratification patterns as well as the related physical and chemical properties of these water bodies. Sampling was done with the help of the Squam Lakes Association, as well as the Green Mountain Conservation Group and affiliated volunteers. Samples were delivered to the NH state labs in Concord for most of the chemical analyses, as well as assessed using the facilities in Boyd Hall ...


The Effects Of Traffic Related Air Pollution And Proposed Legal Remedies, Alessandro Magi 2017 Wilfrid Laurier University

The Effects Of Traffic Related Air Pollution And Proposed Legal Remedies, Alessandro Magi

Bridges: An Undergraduate Journal of Contemporary Connections

This paper intends to examine the environmental issues that accompany air pollution generated from traffic related incidents, and the implications that this mass-generated pollution has on air quality, as well as the quality of life of humans exposed chronically to airborne carcinogens. Traffic related air pollution is an environmental problem that is heightened by urban design and population demographics such as urban sprawl, spatial distribution, population density, and infrastructure design. Furthermore, this paper will scrutinize Canadian legislation that regulates traffic related air pollutants, and develop an argument for how to apply legislation going forward. As Cartier, Benmarinha, and Brousselle (2015 ...


Link Between Local Phenology And Climate Change, Blake Steiner, Tatyana Lobova 2017 Old Dominion University

Link Between Local Phenology And Climate Change, Blake Steiner, Tatyana Lobova

Virginias Collegiate Honors Council Conference

The SouthEast Virginia Phenology Project was initiated as collaboration between Norfolk Botanical Garden and Old Dominion University in 2010 to document phenology of seven native plants and potential effects of the climate change on their life cycle. The air temperature in Norfolk has increased on average by 0.02ºC per year since 1980. Four out of seven of taxonomically diverse plant species (Mayapple, Flowering Dogwood, Highbush Blueberry, and Common ButtonBush) exhibited significant sensitivity to warming temperatures. Of these four, only Common Buttonbush (Cephalanthus occidentalis) had shown significant phenophases shift. Specifically, first flowering and first fruiting dates had shifted 2.7 ...


Spatial And Temporal Distribution And Abundance Microplastics In Lake Champlain Long-Term Monitoring Samples, Susan-Marie Nadeau Hagar, Lindsey E. Austin 2017 SUNY Plattsburgh

Spatial And Temporal Distribution And Abundance Microplastics In Lake Champlain Long-Term Monitoring Samples, Susan-Marie Nadeau Hagar, Lindsey E. Austin

Center for Earth and Environmental Science Student Posters

Microplastics are particles less than 5mm in size, characterized as fibers, fragments, beads, foams, and pellets. Microplastics (MP) arise from four main processes: environmental degradation (UV exposure, mechanical and/or biological), direct release by means of wastewater treatment processing, unintentional loss of raw materials, and discharge of macerated wastes. Microplastics are potentially toxic to aquatic biota and the presence of microplastics in freshwater ecosystems is largely under-researched. The goal of our research was to examine the spatial and temporal distribution of microplastics and pre-production particulate (nurdles) from long-term monitoring (LTM) zooplankton samples within Lake Champlain collected between 1992-2016. Nurdles were ...


Getting That Sinking Feeling: Analysis And Impacts Of Sea Level Rise On Three National Parks Along The East Coast, Usa, Julia K. Deros, Amanda L. Thibault, Amy B. True 2017 Gettysburg College

Getting That Sinking Feeling: Analysis And Impacts Of Sea Level Rise On Three National Parks Along The East Coast, Usa, Julia K. Deros, Amanda L. Thibault, Amy B. True

Student Publications

Due to global climate change, sea level rise (SLR) has become a threat for future generations, but the extent of this danger is unknown. To help understand the possible effects of SLR on the east coast of the United States, we studied three national parks: Acadia National Park (ACAD), Assateague Island National Seashore (ASIS) and Everglades National Park (EVER). We predicted that ACAD would be less affected by SLR than ASIS and EVER due to the construction of its beach profile. By measuring the beach profile, we found that Sand Beach in ACAD was reflective with an average slope of ...


A Survey Of Microplastics In Wastewater Treatment Plant Effluent In The Lake Champlain Basin, Sadie Brown, Erin Lee, Brandon Buksa, Thomas Niekrewicz 2017 SUNY Plattsburgh

A Survey Of Microplastics In Wastewater Treatment Plant Effluent In The Lake Champlain Basin, Sadie Brown, Erin Lee, Brandon Buksa, Thomas Niekrewicz

Center for Earth and Environmental Science Student Posters

Microplastic pollution researchers are beginning to quantify, characterize, and collaborate on finding solutions to this emerging pollution problem. Recent studies have documented consumer care products and laundering of synthetic garments as major sources of microplastics. Most current wastewater treatment plant (WWTP) technologies are unable to capture and remove particulate size; thus, bioaccumulation over time poses a threat to aquatic organisms. In 2015, we began surveying WWTP post-treatment effluent samples from the city of Plattsburgh, NY (n = 31) and in 2016, added 3 other plants in the Lake Champlain watershed, specifically St Albans, VT (n = 8), Ticonderoga, NY (n = 4), and ...


Sources To Seafood: Mercury Pollution In The Marine Environment, Celia Y. Chen, Charles T. Driscoll, Kathleen F. Lambert, Robert P. Mason, Laurie R. Rardin, Catherine V. Schmitt, N. S. Serrell, Elsie M. Sunderland 2017 Dartmouth College

Sources To Seafood: Mercury Pollution In The Marine Environment, Celia Y. Chen, Charles T. Driscoll, Kathleen F. Lambert, Robert P. Mason, Laurie R. Rardin, Catherine V. Schmitt, N. S. Serrell, Elsie M. Sunderland

Catherine Schmitt

In 2010, the Toxic Metals Superfund Research Program at Dartmouth College brought together a group of 50 scientists and policy stakeholders to form C-MERC, the Coastal and Marine Mercury Ecosystem Research Collaborative. The goal was to review current knowledge—and knowledge gaps—relating to a global environmental health problem, mercury contamination of the world’s marine fish. C-MERC participants attended two workshops over a two-year period, and in 2012 C-MERC authors published a series of peer-reviewed papers in the journals Environmental Health Perspectives and Environmental Research that elucidated key processes related to the inputs, cycling, and uptake of mercury in ...


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