Environmental Sciences Commons^™

Targeting Perennial Vegetation In Agricultural Landscapes For Enhancing Ecosystem Services, Heidi Asbjornsen, V. Hernandez-Santana, Matthew Z. Liebman, J. Bayala, J. Chen, Matthew J. Helmers, C. K. Ong

Agricultural and Biosystems Engineering Publications and Papers

Over the past century, agricultural landscapes worldwide have increasingly been managed for the primary purpose of producing food, while other diverse ecosystem services potentially available from these landscapes have often been undervalued and diminished. The incorporation of relatively small amounts of perennial vegetation in strategic locations within agricultural landscapes dominated by annual crops—or perennialization—creates an opportunity for enhancing the provision of a wide range of goods and services to society, such as water purification, hydrologic regulation, pollination services, control of pest and pathogen populations, diverse food and fuel products, and greater resilience to climate change and extreme disturbances ...

Using Biodiversity To Link Agricultural Productivity With Environmental Quality: Results From Three Field Experiments In Iowa, Matthew Z. Liebman, Matthew J. Helmers, Lisa A. Schulte-Moore, Craig A. Chase

Agricultural and Biosystems Engineering Publications and Papers

Agriculture in the US Corn Belt is under increasing pressure to produce greater quantities of food, feed and fuel, while better protecting environmental quality. Key environmental problems in this region include water contamination by nutrients and herbicides emitted from cropland, a lack of non-agricultural habitat to support diverse communities of native plants and animals, and a high level of dependence on petrochemical energy in the dominant cropping systems. In addition, projected changes in climate for this region, which include increases in the proportion of precipitation coming from extreme events could make soil and water conservation in existing cropping systems more ...

Investigating Perspectives Of Rural Nevadans On Climate Change Solutions, Tricia Dutcher

Graduate Research Symposium (GCUA)

Rural perspectives are important for the issue of climate change. Rural areas are high concentrations of active voters who deny the problem of anthropogenic climate change. Rural residents also face decisions about inviting large, utility scale renewable energy developments in their areas. This research examines rural Nevadan’s perspectives on climate change to offer insights about the relationship between climate change perceptions and communication strategies. The research offers policy implications that address context specific issues, solution-oriented dialogue, and interest matching to mitigate anthropogenic climate change.

A Greener Disney, Cidalia Pina

Undergraduate Review

Disney brings nature and environmental issues to the forefront with its non-confrontational approach to programming meant for children. This opportunity raises awareness and is relevant to growing environmental concerns. However this awareness is just a cursory start, there is an imbalance in their message and effort with that of their carbon footprint. The important eco-messages that Disney presents are buried in fantasy and unrealistic plots. As an entertainment giant with the world held magically captive, Disney can do more, both in filmmaking and as a corporation, to facilitate a greener planet.

The Effect Of Hydrochloric Acid Strength On The Nanometer-Scale Dissolution Topography Of Calcite Crystal Surfaces, Jennifer Fruzzetti

Undergraduate Review

The physico-chemical mechanisms by which rock-forming minerals dissolve in natural fluids are controlled by a number of environmental factors. In this study, we investigate dissolution mechanisms by observing how the nanometer-scale surface topography of calcite is affected by the acidity of etching solutions. Here we report atomic force microscope (AFM) observations of calcite crystal surfaces both before and after chemical etching for 10 seconds in 0.01%, 0.1%, and 1.0% HCl solutions. AFM observations show that unetched, freshly-cleaved calcite {10ī4} crystal surfaces are characterized by flat layers separated by steps oriented parallel to calcite cleavage planes. Calcite {10ī4 ...

Delineation And Characterization Of The Furnace Brook Watershed In Marshfield, Massachusetts: Potential Impact Of Water Supply Extraction, Erik Croll

Undergraduate Review

The Furnace Brook watershed in Marshfield, Massachusetts supplies a coastal community of 25,132 residents with nearly 45% of its town water supply (Marshfield 2012a). As in many other coastal communities, development pressure in Marshfield has increased in recent years, creating a growing demand for freshwater extraction. It has been observed, however, that portions of the stream and Furnace Pond disappear entirely at certain times of year, generally between June and August, depending on the rate of groundwater extraction. This has created a conflict between protecting the designated wetland areas and meeting public pressure for water resources, even within what ...

Conflicting Discourses Of Participatory Postdevelopment In Community-Led Total Sanitation, Shaina M. Pomerantz Kasper

Honors Projects

The development community perceives the current “sanitation crisis” to be remedied with water, sanitation and hygiene initiatives. While the participatory process of Community-Led Total Sanitation (CLTS) incorporates community involvement, it still imposes globalized sanitation norms and a dominant external worldview. Using discourse analysis of the CLTS handbook, I argue that CLTS structurally advocates for continuing local hierarchies, promotes external technologies, enforces the power of outside development facilitation, and creates a new sanitation paradigm. Communities continue to resist sanitation development such as CLTS because of its top-down structure. I conclude by offering policy recommendations to improve the CLTS process.

Walking Box Ranch Custodianship Quarterly Progress Report: Period Ending January 10, 2013, Margaret N. Rees

Walking Box Ranch

• UNLV provides stewardship of Walking Box Ranch (WBR) by providing a caretaker who oversees the property, facilitating use of the property by researchers and educators, developing a use and research policy for the property, and coordinating these activities with BLM and in accordance with TNC restrictions.
• UNLV currently addresses security issues for the property through the presence of the caretaker and two Metro Officers who reside on the property in two recreational vehicles.
• UNLV continues to work with BLM, supplying content for interpretation at the future Walking Box Ranch museum.
• BLM and UNLV visited the ranch on December 5th to ...

Walking Box Ranch Custodianship Quarterly Progress Report: Period Ending July 10, 2012, Margaret N. Rees

Walking Box Ranch

• UNLV provides stewardship of Walking Box Ranch (WBR) by providing a caretaker who oversees the property, facilitating use of the property by researchers and educators, developing a use and research policy for the property, and coordinating these activities with BLM and in accordance with TNC restrictions.
• UNLV currently addresses security issues for the property through the presence of the caretaker and two Metro Officers who reside on the property in two recreational vehicles.
• UNLV continues to work with BLM and Condit, supplying content for interpretation at the future Walking Box Ranch museum.
• BLM visited the ranch on July 5 to ...

Network Technologies Used To Aggregate Environmental Data, Paul Stasiuk, Konstantin Läufer, George K. Thiruvathukal

Computer Science: Faculty Publications & Other Works

The goal of the Loyola Weather Service (lws) project is to design and build a system of functioning environmental monitoring widgets that can intelligently and autonomously control the environment around them based on set thresholds and triggers. The widgets will also have the ability to aggregate their data and easily display this data in various ways: through a user interface in the room that the widget is placed, via a web application, and programmatically via a RESTful web service.

Method For The Conversion Of Cellulose And Related Carbohydrate Materials To Low-Molecular-Weight Compounds, Walter S. Trahanovsky, Ronald C. Holtan, Kyle W. Quasdorf, Normon K. Olson, Alyse A. Hurd, Joseph A. Marshall

Iowa State University Patents

Methods of converting cellulose or related biorenewable carbohydrate materials into high-value chemical compounds. The methods provide a means of converting low-cost materials such as cellulose and biomass into high yields of compounds such as ethylene glycol, propylene glycol, glycerin, methanol, hydroxyacetone, glycolaldehyde and dihydroxyacetone.

Summer/Fall 2007

Jefferson Currents: The Energy Conservation Newsletter

Dr. Watts' Brilliant Savings, steam power and chilled water on campus, 6 degrees of efficiency challenge, and other conservation news. 2 pages.

Winter 2005/6

Jefferson Currents: The Energy Conservation Newsletter

Dr. Watts' Brilliant Savings, Jefferson signs agreements for a new central chilled water plant and steam purchase pricing, and other conservation news. 2 pages.

Winter 2005

Jefferson Currents: The Energy Conservation Newsletter

Dr. Watts' Brilliant Savings, energy myths debunked, savings at work, and other conservation news. 2 pages.

Winter 2003

Jefferson Currents: The Energy Conservation Newsletter

Dr. Watts' Brilliant Savings, campus heating costs soar, energy upgrades at TJUH buildings, and other conservation news. 2 pages.

Sp740-A Good Agricultural Practices Series: Testing Water For Fruit And Vegetable Production, Susannah Amundson, Grant Mccarty, Faith Critzer, Annette Wszelaki

Commercial Horticulture

No abstract provided.

Sp740-A Good Agricultural Practices Series: Testing Water For Fruit And Vegetable Production, Susannah Amundson, Grant Mccarty, Faith Critzer, Annette Wszelaki

Commercial Horticulture

No abstract provided.

Sp741-B Wise Up And Power Down: Light Up Your Life - For Less (24" X 36" Poster), Martha Keel

Environment (Indoor & Outdoor)

No abstract provided.

Sp741-A Wise Up And Power Down: Light Up Your Life - For Less, Martha Keel

Environment (Indoor & Outdoor)

No abstract provided.

Sp555 Indoor Air Hazards, Martha W. Keel, Bobbi Clarke

Environment (Indoor & Outdoor)

No abstract provided.