Natural Resources Management and Policy Commons^™

Investigating The Effects Of Urbanization On Residual Forest Soils In Knox Co., Tennessee, Benjamin Lee Reichert

Masters Theses

As the process of urbanization advances across the country, so does the importance of urban forests, which include both trees and the soils in which they grow. Soil microbial biomass, which plays a critical role in nutrient transformation in urban ecosystems, is affected by factors such as soil type and the availability of water, carbon, and nitrogen. However, the microbial dynamics of urban forest soils remain largely unknown. A key mechanistic link between plant species diversity and ecosystem function is heterotrophic microbial communities that inhabit the soil and mediate principal processes that control ecosystem carbon (C) and nitrogen (N) cycling. …

Determining The Association Between The Structure Of Stream Benthic Macroinvertebrate Communities And Agricultural Best Management Practices, Roger Holmes

Electronic Thesis and Dissertation Repository

Farmers have been encouraged to adopt more sustainable farming practices (BMPs) that mitigate adverse agricultural effects on the natural environment. However, the ability of BMPs to protect or restore riverine systems continues to be questioned due to limited evidence directly linking BMP use with improved ecological conditions. The exclusion of hydrological pathways in previous field studies may explain why a direct link has not yet been established. The goal of this study was to assess the association between benthic macroinvertebrate community structure and the number and location of agricultural BMPs. Macroinvertebrates and water chemistry were sampled in 30 headwater catchments …

Evidence-Based Decision Making In Coastal Oregon: Increasing The Effectiveness Of Policy And Management Decisions, Kaitlin Goldsmith

Environmental Science and Management Professional Master's Project Reports

Changing climatic conditions, demographics, and land uses are projected to alter the provisioning of ecosystem services in estuarine, coastal and nearshore marine ecosystems, necessitating mitigation and adaptation policies and management. The current paradigm of siloed research efforts occurring in parallel to, rather than in collaboration with, decision-makers will be insufficient for the rapid responses required to adapt to and mitigate for projected changing conditions in coastal areas. Here, I suggest a different paradigm: one where research begins by engaging decision-makers in the identification of priority research needs (biophysical, economic, and social), and in which researchers analyze and present data in …

What Role Can Ceqa Play In Reaching Ghg Emissions Reductions Goals Set Forth In Ab 32 – An Analysis Of Ceqa, Ab 32, And Recommendations For Ceqa Reform, Eleanor Gilbert

Master's Projects and Capstones

The Global Warming Solutions Act of 2006 (AB 32) intends to reduce the effects of climate change through several mechanisms, including greenhouse gas (GHG) emissions reduction. AB 32 established a statewide GHG emissions goal, which requires California to decrease its GHG emissions to 1990 levels by 2020. The California Environmental Quality Act (CEQA) is an environmental assessment law adopted in 1970 that requires lead agencies (private developers, public agencies, etc.) to consider and disclose the potential significant environmental impacts of new development projects the lead agency is planning. CEQA has attracted much controversy since adoption and continues to be the …

Natural Gas Service Expansion Criteria In Maine, Kevin Mahaffey

Muskie School Capstones and Dissertations

The purpose of this study is to gain an understanding of the framework used by Maine’s natural gas utilities in making decisions to expand natural gas infrastructure and service to new customers,and then to apply this knowledge in an attempt to identify municipalities that are potentially attractive candidates for service expansion within Maine.

This study is not a precise model for gas utilities, but is meant rather to be a reconnaissance study for finding viable and attractive candidates for service.This study was limited both by resources and the inaccessibility of proprietary information.

The Effect Of Azo Textile Dyes On Gross Primary Production And Community Respiration In An Artificial Environment, Theresa L. Petzoldt

Honors Theses

Azo dyes are the largest category of textile dyes in production today, with over 100,000 tons of dye produced yearly in the United States. Ten to fifty percent of this dye is not fixed to the fabric during the textile production process, and is therefore discarded as effluent. Because dye waste is difficult to process in wastewater treatment facilities, it is important to understand how this waste affects aquatic systems using a whole ecosystem approach. This study used an artificial stream to model the effects of four azo dyes on benthic biofilm production and respiration. Dyes were found to have …

The Effects That Liquid And Solid Cattle Manure Have On The Water Quality Of Drainage Ditches In Putnam County, Ohio, Janelle Horstman

Honors Projects

Lake Erie has experienced harmful algal blooms with increased frequency since the mid-1990s due to excess nutrients from Rivers, such as the Maumee River, and largely agricultural watersheds. Nonpoint source pollution from agriculture contributes to eutrophication, algal blooms, and the degradation of water quality. This creates stress on aquatic fauna, reduced aesthetic quality, odor, and limits of the water for usage of drinking, recreation, and industry. This research paper asks what the contributions of having access to manure application records, soil records, and information about antibiotics have on what is known about manure management and antibiotic resistance, which has been …