Natural Resources and Conservation Commons^™

Ecotourism In Costa Rica: Environmental Impacts And Management, Emily Mckeone

Environmental Studies Undergraduate Student Theses

Globally we are witnessing growing environmental destruction, particularly to the natural resource bases of underdeveloped countries. If ecotourism can generate profits for local economies, while protecting and conserving the natural resource base of that community, it could be a strong alternative for numerous countries. Evidence suggests that the ecotourism industry has been expanding at a rapid rate in recent decades (Dasenbrock 2002). It is important to understand the positive and negative ecological impacts of the industry as this rapid growth rate continues.

The main objective of this study is to highlight the strengths and weaknesses of the ecotourism industry in ...

Common Core 4th Grade Environmental Science Lesson Plans For California Teachers, Gillian Schoenfeld

Natural Resources Management and Environmental Sciences

This project and its analyses were conducted to assist California fourth grade elementary school teachers in adjusting to teaching Common Core standards and science curriculum in their classrooms. The project included the creation of lesson plans, which could be utilized throughout the state of California.

As the Common Core standards, California’s Next Generation Science Standards for K- 12, were just proposed in June of 2013, these lesson plans would help teachers update their lessons and provide them materials and concepts of how to do so. These lessons provide higher-order thinking for students, which is the whole concept of the ...

Poaching As A Threat To Biodiversity And A Barrier To Sustainable Development In Western Uganda: A Case Study Of Queen Elizabeth National Park, Rwenzori Mountains National Park, Kibale National Park, And Surrounding Areas, Madeleine Torraca Jones

Independent Study Project (ISP) Collection

Despite efforts of the international community and individual countries to end poaching activities and target the markets which drive these activities, poaching continues to be a global problem. This paper will discuss the methods, findings, and recommendations that have resulted from a study on poaching in western Uganda. Uganda is both a transit country for illegal animal species and their derivatives from neighboring countries as well as a home to a number of species that are targeted by poachers. This makes Uganda an area of importance to the study of persistent poaching. Many of Uganda’s protected areas and native ...

Ecosystem Services In Decision Making: Time To Deliver, James Salzman, Gretchen C. Daily, Stephen Polasky, Joshua Goldstein, Peter M. Kareiva, Harold A. Mooney, Liba Pejchar, Taylor H. Ricketts, Robert Shallenberger

Faculty Scholarship

Over the past decade, efforts to value and protect ecosystem services have been promoted by many as the last, best hope for making conservation mainstream – attractive and commonplace worldwide. In theory, if we can help individuals and institutions to recognize the value of nature, then this should greatly increase investments in conservation, while at the same time fostering human well-being. In practice, however, we have not yet developed the scientific basis, nor the policy and finance mechanisms, for incorporating natural capital into resource- and land-use decisions on a large scale. Here, we propose a conceptual framework and sketch out a ...

Decomposition And Nutrient Release Of Different Cover Crops In Organic Farm Systems, Jianru Shi

Dissertations & Theses in Natural Resources

Cover crops act as green manure adding organic matter to agricultural-soils. For legume green manures to be an effective nitrogen (N) source for organic farming systems, their N release must be in synchrony with crop N demand. The objectives of this study were 1) determine the decomposition rates of three common cover crops (white clover, (Trifolium repens,L ) red clover (Trifolium pratense L.) and soybean (Glycine max L) in order to determine when most N was released and its synchrony with subsequent corn crop uptake; 2) we focused on the effect of cover crops on soil N levels. This study ...

Indications Of Environmental Literacy: Using A New Survey Instrument To Measure Awareness, Knowledge, And Attitudes Of University-Aged Students, Susan Roberta Mello O'Brien

Retrospective Theses and Dissertations

The role of environmental education has received enough attention with applied environmental literacy research completed at the level of elementary and secondary schools curricula, as well as assessments on adults' environmental literacy at state, national, and even international levels. However, few studies have focused on university-level assessments as means for increasing people's environmental knowledge. The reported research examines the levels of environmental knowledge and attitudes of Iowa State University (ISU) undergraduate and graduate students registered for the 2007 spring semester. A new survey instrument was developed specifically for this study, accounting for local (Midwestern) and global environmental issues. Students ...

Final Report: Water And Sewer Service Area Maps (By Town), Horsley Witten Group, Inc.

Phase I Final Report

No abstract provided.

Evaluation Of The Feasibility Of Struvite Precipitation From Domestic Wastewater As An Alternative Phosphorus Fertilizer Resource, Amanda R. Bird

Master's Projects and Capstones

Finite phosphate rock ore reserves are estimated to be exhausted in 100 to 150 years. Phosphate rock ore is the single global source material for phosphorus fertilizer production. Once these reserves are gone, agricultural production will be negatively impacted. There are currently no alternative phosphorus resources. However, phosphorus concentrations present in human excrement traveling through domestic wastewater treatment facilities is being disposed of directly to the environment, often resulting in pollution problems. Recovering phosphorus from wastewater with struvite precipitation systems at wastewater treatment plants can alleviate future phosphorus scarcities. Evaluation of phosphorus recovery through struvite precipitation at wastewater treatment plants ...

Evaluation Of Phase Change Materials For Cooling In A Super-Insulated Passive House, Jeffrey Stephen Lauck

Dissertations and Theses

Due to factors such as rising energy costs, diminishing resources, and climate change, the demand for high performance buildings is on the rise. As a result, several new building standards have emerged including the Passive House Standard, a rigorous energy-use standard based on a super-insulated and very tightly sealed building envelope. The standard requires that that air infiltration is less than or equal to 0.6 air changes per hour at a 50 Pascal pressure difference, annual heating energy is less than or equal to 15kWh/m2, and total annual source energy is less than or equal to 120 kWh ...

Field Guide To The Geology Of The Harlan County Lake Area, Harlan County, Nebraska — With A History Of Events Leading To Construction Of Harlan County Dam, Robert F. Diffendal, Duane R. Mohlman, Richard G. Corner, F. Edwin Harvey, K. J. Warren, Scott Summerside, Roger K. Pabian, Duane A. Eversoll

Papers in Natural Resources

The year 2002 will mark the fiftieth anniversary of completion of the Harlan County Dam and Multi-Purpose Reservoir. This seems a good time to write about the history of and reasons for building the dam, the effects of the dam and reservoir on the Republican River valley, and the geologic features seen along the shores of the lake and areas nearby. As many junior authors helped produced this educational circular, they are listed in the table of contents. All other sections were written by the senior author.

Includes July 2016 update: Addendum of photographs showing fault traces on drought-exposed lake ...