Portland-Vancouver Ultra-Ex: Evaluating Relationships Between Governance And Environmental Quality In Urban Ecosystems, 2016 Portland State University
Portland-Vancouver Ultra-Ex: Evaluating Relationships Between Governance And Environmental Quality In Urban Ecosystems, J. Alan Yeakley, Sally Duncan, Steve Bollens, Connie P. Ozawa, Vivek Shandas, Heejun Chang, Marion Dresner, Sean N. Gordon, John A. Harrison, Jeffrey D. Kline, Anita T. Morzillo, Noelwah R. Netusil, Gretchen Rollwagen-Bollens, Mark Stephan, Paul R. Thiers
Sean N. Gordon
The Portland-Vancouver Urban Long Term Research Area (ULTRA-Ex) is a multidisciplinary project aimed at understanding the feedbacks between human and natural systems in urban settings. The ULTRA-Ex project is seeking to answer the overarching question: How do human governance and biophysical systems respond interactively to both press and pulse disturbances in urban socio-ecological systems? This presentation provides early observations and findings from the PV ULTRA-Ex project.
Artificial Recharge Of Groundwater With Recycled Municipal Wastewater In The Pajaro Valley, 2016 University of San Francisco
Artificial Recharge Of Groundwater With Recycled Municipal Wastewater In The Pajaro Valley, Olivia Heir
The Pajaro Valley, located along California’s Central Coast, is the State’s 5th most productive agricultural region. Groundwater is the main source of water for the region, and due to high agricultural demand, the Pajaro Valley is facing groundwater depletion and rapid seawater intrusion. Artificial recharge of recycled water into groundwater aquifers in other locations has proven to be an effective method of mitigating groundwater depletion and seawater intrusion while providing a sustainable water supply. Two methods of artificial recharge with recycled water exist: direct injection and surface spreading (infiltration). Case studies of both methods of recharge ...
Buffer Strips For Controlling Herbicide Losses, 2016 Iowa State University
Buffer Strips For Controlling Herbicide Losses, Steven K. Mickelson, James L. Baker
Steven K. Mickelson
Buffer strips are considered effective for reducing runoff of sediment and agricultural chemicals from cropland. In fact, buffer strips, or vegetative filter strips, have been suggested as a Best Management Practice to reduce nonpoint source pollution from cropland. This pollution can be great, especially if rainfall occurs shortly after a chemical has been applied.
Efficient Herbicide Application To Reduce Environmental Losses, 2016 Iowa State University
Efficient Herbicide Application To Reduce Environmental Losses, James L. Baker, Steven K. Mickelson
Steven K. Mickelson
Media reports of atrazine in rainwater and surface and groundwater resources have prompted a concerned public, which includes farmers, to find more efficient, environmentally sound ways to apply pesticides and fertilizer.
Water Quality Research: A Collaborative Effort, 2016 Iowa State University
Water Quality Research: A Collaborative Effort, Bruce A. Babcock
Who could be against clean water? After all, we rely on clean water for our households, farms, industries, and for recreation. But whenever groups push for cleaner water, there is an inevitable outcry about the costs. And, too often it seems, the outcry is from farming interests. This should come as no surprise because in many areas runoff from crop and livestock farms is the largest contributor to water pollution.
Quantifying The Role Of Riparian Management To Control Non-Point Source Pollution Of Pasture And Cropland Streams, James R. Russell, Daniel G. Morrical, John Kovar, Daryl R. Strohbehn, John D. Lawrence, Mathew M. Haan, Shelly Lee Nellesen, Thomas M. Isenhart, Richard Schultz
Grazing management practices have the potential to mitigate some problems with sediment and phosphorus loading in pasture streams. The project demonstrated possible strategies to lessen grazing impacts on streams.
Chapman University 2016 Environmental Audit: Residence Life Dining Services Equipment, 2016 Chapman University
Chapman University 2016 Environmental Audit: Residence Life Dining Services Equipment, Alexandra Fw Sidun, Devon T. Bloss
Student Research Day Abstracts and Posters
Chapman University accommodates over 1700 student meal plans per day through the on-campus dining services provided by Sodexo Restaurant Services. The commercial-grade kitchens found in the Randall Dining Commons (RDC) of Sandhu Conference Center are frequently used to prepare food for students for every meal, seven days a week. The RDC kitchen facility has staff working around the clock and high consumption electrical, water, and gas appliances constantly running to parallel the high demand. The frequent use of commercial kitchen appliances results in an enormous consumption of energy and water resources leading to comparably high utility bills. Measuring the energy ...
Risk Management Instruments For Water Reallocations, 2016 Iowa State University
Risk Management Instruments For Water Reallocations, Chad E. Hart
Federal and state governments are searching for programs and/or policies to deal with the risks linked with uncertainty in water supplies and demands. Within the United States, competition among agricultural, urban, and environmental concerns for water is increasing. Drought conditions and water use restrictions have, at times, limited water supplies for these varied uses. The federal government stands in a unique position as both a major supplier and demander of water. As such, the federal government has put forward several programs for water conservation, information, and usage. One area in which the federal government has not made significant progress ...
Costs And Benefits Of Fixing Gulf Hypoxia, 2016 Iowa State University
Costs And Benefits Of Fixing Gulf Hypoxia, Bruce A. Babcock, Catherine L. Kling
Each spring and summer in the Gulf of Mexico, nutrient-rich ef- fl uent from the Mississippi and Atchafalaya Rivers stimulates algae growth. The rates of growth are typically so high that when the algae die and decompose, they consume more dissolved oxygen than can be replenished by the ocean. The Gulf hypoxic zone or “dead zone” is created when dissolved oxygen levels become too low to support sea life.
A Conceptual Framework For Evaluating Agricultural Economic And Environmental Tradeoffs In The Central Nebraska Basins Using Field-Level Area Study Data, P. G. Lakshminarayan, Bruce A. Babcock, Paul D. Mitchell
The Central Nebraska Basin (CNB) is the site of intensive agricultural activity, in part because of the good irrigation supplies provided by the Middle Platte alluvial aquifer system. In this paper, the authors describe the integrated modeling system that addresses the economic and environmental tradeoffs associated with agricultural conjoint source pollution management in the CNB study area and provide a brief overview and summary of the field-level Area Study survey data that will operationalize the system.
The Effect Of Soil Ph On The Integument Of Western Tiger Salamanders, 2016 University of Nebraska- Lincoln
The Effect Of Soil Ph On The Integument Of Western Tiger Salamanders, Aaron Devine, Dennis M. Ferraro
UCARE Research Products
This study was done in an effort to better understand the multifaceted issues in amphibian decline, specifically within the eastern regions of Nebraska, to determine whether or not human-induced acid rain contributed to the decline. This is a heavily important topic of research as amphibians worldwide are declining related to many issues that stem from climate change and several other environmental issues of that nature. This study looked to use acidic pH within soil from western Nebraska to determine the reactionary impacts (primarily lesions) the western tiger salamander had after being subjected to it. It was found that pH did ...
Wave And Tidal Energy In New York: Sustainable Hydroelectricity For The Grid, 2016 Fordham College Rose Hill
Wave And Tidal Energy In New York: Sustainable Hydroelectricity For The Grid, Lucas Basil Romanowsky
Student Theses 2015-Present
As humanity continues to exceed the ecological carrying capacity of the earth in its use of nonrenewable energy sources, it is imperative to find and shift to alternative renewable energy sources that can sustain human civilization. The ocean based phenomenon of tides, current, and waves are a way in which that source of energy can be obtained and broadened for human consumption. Oceanic energy can serve not only as a means to provide cleaner energy, but also improve the economy and the land based environment. The natural sciences and social sciences are examined within the quantitative data present. The natural ...
Aquifer Vulnerability Modeling In New Jersey Through The Use Of Modified Drastic Methodology, 2016 Portland State University
Aquifer Vulnerability Modeling In New Jersey Through The Use Of Modified Drastic Methodology, Clement Uduk, Tanja Hopmans
Student Research Symposium
Due to the global average increase in temperature over the last 50 years, sea levels have been rising and making coastal aquifers more susceptible to saltwater intrusion. The average rate of sea level rise has increased from 2 mm/year to 3.5 mm/year during the twentieth century. The state of New Jersey is not only densely populated but the development along coastlines makes inundation a potential serious threat. New Jersey is diverse in aquifer types, in addition to the types of water bodies surrounding New Jersey, and makes for an interesting case study for groundwater vulnerability. The EPA ...
Alluvial Sedimentation Associated With Logging In Low Gradient Watersheds In Desoto National Forest, Mississippi, 2016 University of Southern Mississippi
Alluvial Sedimentation Associated With Logging In Low Gradient Watersheds In Desoto National Forest, Mississippi, Andrew W. Simmons
Forestry and related businesses are an important factor of Mississippi’s economy, contributing between $11 and $14 billion annually (Mississippi Forestry Commission, 2006). The timber industry is not only important in Mississippi but is an important sector of the economy throughout the Gulf Coast region. While providing positive economic benefits to the region, the forestry industry can also negatively affect soil properties, hillslope stability, and increase sedimentation rates in local streams and rivers. The aim of this research is to determine if forestry removal causes an increase of soil erosion and how it affects floodplain sedimentation in the low gradient ...
Feasibility, Safety, Economic And Environmental Implications Of Whey-Recovered Water For Cleaning-In Place Systems: A Case Study On Water Conservation For The Dairy Industry, 2016 University of Nebraska-Lincoln
Feasibility, Safety, Economic And Environmental Implications Of Whey-Recovered Water For Cleaning-In Place Systems: A Case Study On Water Conservation For The Dairy Industry, Yulie E. Meneses
Dissertations & Theses in Food Science and Technology
Several countries around the world are facing the challenge of producing food with limited water resources for a growing population. This reality is forcing all sectors involved in the food supply chain to look for water conservation strategies that contribute to assure global food security. Besides water consumption, the food industry has to deal with wastewater generation; therefore, water reconditioning and reuse is an attractive solution to address both issues. The goal of this research was to demonstrate that high quality water can be recovered from whey, a by-product of the cheese making process, and reused in cleaning-in place (CIP ...
Relationships Between Nutrients, Periphyton Abundance, And Benthic Macroinvertebrate Scrapers In Ozark Highland Streams, 2016 University of Arkansas, Fayetteville
Relationships Between Nutrients, Periphyton Abundance, And Benthic Macroinvertebrate Scrapers In Ozark Highland Streams, Harrison Smith
Biological Sciences Undergraduate Honors Theses
We collected samples from seven Arkansas streams during the months of August 2014 and February 2015 with the objective of determining possible relationships between nutrients, periphyton abundance and benthic macroinvertebrates. We hypothesized that periphyton would be positively associated with nutrients, and that increases in periphyton biomass would increase the abundance and diversity of benthic scraper families. Samples were collected from three transects at each site. The periphyton was analyzed for carbon, nitrogen, phosphorus, and ash free dry mass and Chl-a content. Macroinvertebrates families belonging to the feeding group of grazers/scrapers were compared with water column and periphyton nutrient concentrations ...
Initial Wetland Hydrology And Vegetation Composition In Predicted Wetlands Adjacent To Lake Naconiche, Nacogdoches County, Texas, 2016 Stephen F Austin State University
Initial Wetland Hydrology And Vegetation Composition In Predicted Wetlands Adjacent To Lake Naconiche, Nacogdoches County, Texas, Amy L. Urbanovsky
Electronic Theses and Dissertations
Plans for the construction of Lake Naconiche, located in northern Nacogdoches County, included a monitoring project to demonstrate at least 176 acres of land adjacent to the lake would be converted into wetlands. The purpose of the study was to evaluate the creation of wetlands around the lake and establish a benchmark of vegetation composition and condition for future comparison. Eight locations, placed where the majority of wetlands were expected to form, were chosen for monitoring from the shoreline at 348 feet above mean sea level (ft MSL) to the county fee take line at 357 ft MSL.
Shallow groundwater ...
The Value Of Long-Term Stream Invertebrate Data Collected By Citizen Scientists, 2016 Portland State University
The Value Of Long-Term Stream Invertebrate Data Collected By Citizen Scientists, Patrick Michael Edwards
Environmental Science and Management Faculty Publications and Presentations
The purpose of this investigation was to systematically examine the variability associated with temporally-oriented invertebrate data collected by citizen scientists and consider the value of such data for use in stream management. Variability in invertebrate data was estimated for three sources of variation: sampling, within-reach spatial and long-term temporal. Long-term temporal data were also evaluated using ordinations and an Index of Biotic Integrity (IBI). Through two separate investigations over an 11-year study period, participants collected more than 400 within-reach samples during 44 sampling events at three streams in the western United States. Within-reach invertebrate abundance coefficient of variation (CV) ranged ...
Focus On International Joint Commission Activities (Issn 0832-6673): Vol.19 Iss.3, 2016 University of Windsor
Focus On International Joint Commission Activities (Issn 0832-6673): Vol.19 Iss.3, Uwindsor Administrator
Focus on International Joint Commission Activities
Enlightened public opinion ultimately set things right in the Reserve Mining case. Following US. District Judge Miles Lord’s order of April 20, 1974 to cease all taconite tailings discharge to Lake Superior, it took much additional effort by the State of Minnesota, intervening environmental groups and the US. Government to stop the 25-year dumping of hundreds of millions of tons of tailings into the world’s fresh- water treasure. It finally happened in the spring of 1980
Focus On International Joint Commission Activities (Issn 0832-6673): Vol.19 Iss.2, 2016 University of Windsor
Focus On International Joint Commission Activities (Issn 0832-6673): Vol.19 Iss.2, Uwindsor Administrator
Focus on International Joint Commission Activities
The glacial history of the Great Lakes basin and the tremendous influence of the lakes themselves create unique conditions. These support a wealth of biological diversity, including many species and communities of global significance. The basin’s sand dunes, coastal marsh- es, rocky shorelines, lakeplain prairies, savannas, forests, fens and other landscapes contain features that are either unique to or are best represented with- in the Great Lakes basin. The remark- able biodiversity of the Great Lakes basin is illustrated by the Indiana Dunes National Lakeshore. This park ranks third among US. National Parks in plant diversity, yet its area ...