Environmental Health and Protection Commons^™

Changing Body Condition In Walleye With Reference To Ideal Sample Size Requirements, Kevin Longtin

Journal of Earth and Life Science

The objective of this study was to determine if walleye Sander vitreus percent dry weight, a measure of condition, differed among summer months of 2014 on Maple Lake, Minnesota. A second objective was to determine if there was a relationship between condition and body temperature, total length, or wet weight. Between three and six walleyes were collected per month by hook and line methods. All fish had internal body temperatures taken at the time of capture and were oven dried in the laboratory at 80 °C in order to measure percent dry weight. There was no relationship between condition and …

Defining The Physiochemical, Biological And Habitat Requirements For The Upper Extant Of Oncorhynchus Mykiss Distribution, Emily Powers

Journal of Earth and Life Science

The distribution of rainbow trout is strongly influenced by their habitat. As climatic conditions change, the distribution of rainbow trout populations will change along with them. The objective of this study was to identify the particular habitat parameters that rainbow trout select for in this lotic system and to specifically assess how this relates to the upper extant of their distribution. By assessing the distribution of the upper extant specifically, future research may be conducted to better assess climatic changes on a small and/or large scale basis. A 9,000 m section of the Clearwater River was used as the study …

Modeling Effective Shade To Prioritize Riparian Restoration Efforts In The Johnson Creek Watershed, Or, Brittany Sahatjian

Environmental Science and Management Professional Master's Project Reports

The influence of stream temperature on the survival and reproductive success of anadromous salmonid populations has become an increasingly concerning issue in the Pacific Northwest. Enhancing the height, density and extent of riparian vegetation is widely accepted as one of the most effective strategies for reducing stream temperatures, while also providing numerous ancillary benefits. Effective shade is defined as the percentage of direct beam solar radiation attenuated and scattered by riparian vegetation before reaching the stream surface and is a commonly used criterion for choosing where to restore riparian vegetation. This project aims to prioritize sites for riparian restoration through …

2014 Nebraska Water Monitoring Programs Report, Marty Link, Ryan Chapman

Nebraska Department of Environmental Quality: Reports

The Nebraska Department of Environmental Quality (NDEQ) is charged with monitoring, assessing, and to the extent possible, managing the state’s water resources. The purpose of this work is to protect and maintain high quality water and encourage or execute activities to improve poor water quality. Monitoring is done on nearly 17,000 miles of flowing rivers and streams, more than 134,000 acres of surface water in lakes and reservoirs, as well as the vast storage of groundwater in Nebraska’s aquifers.

2014 Nebraska Groundwater Quality Monitoring Report

Nebraska Department of Environmental Quality: Reports

The 2001 Nebraska Legislature passed LB329 (Neb. Rev. Stat. §46-1304) which, in part, directed the Nebraska Department of Environmental Quality (NDEQ) to report on groundwater quality monitoring in Nebraska. Reports have been issued annually since December 2001. The text of the statute applicable to this report follows: “The Department of Environmental Quality shall prepare a report outlining the extent of ground water quality monitoring conducted by natural resources districts during the preceding calendar year. The department shall analyze the data collected for the purpose of determining whether or not ground water quality is degrading or improving and shall present the …

Nebraska Water Center Annual Report 2014, Nebraska Water Center

Nebraska Water Center: Administrative Materials

Letter from the Director

I am pleased to present this annual report on the activities, finances and many accomplishments of the Nebraska Water Center (NWC) during 2013 and 2014, a time when the NWC is celebrating its Golden Anniversary. More than being a simple look back at where we’ve been and what we have accomplished over the past year, this report looks forward to the complex challenges and exciting opportunities that lie ahead of us. We are now an integral part of the Robert B. Daugherty Water for Food Institute (DWFI), a growing global institute focused on one of the …

Regulation Of Artisanal Small Scale Gold Mining (Asgm) In Ghana And Indonesia As Currently Implemented Fails To Adequately Protect Aquatic Ecosystems, Karunia F. Macdonald, Mark A. Lund, Melanie L. Blanchette, Clinton D. Mccullough

Research outputs 2014 to 2021

Artisanal small scale gold mining (ASGM) operations are largely unregulated, informal and transient. Rudimentary mining and processing techniques used in ASGM often result in degraded environmental, safety, health and social conditions. ASGM requires permanent sources of water, placing most operations close to natural water bodies. Until recently, the impact on these environments has been largely overlooked, with most studies focussing primarily on mercury contamination and health concerns. Based on Ghanaian and Indonesian experiences, regulation of ASGM is a good step toward improvement, but here we argue that regulation alone is insufficient to improve environmental performance, particularly when the impacts of …

Missing Voices, Hidden Fields: The Gendered Struggles Of Female Farmworkers, Keiko A. Budech

Pitzer Senior Theses

Known for its fertile soil and ideal climate, California has been one of the most agriculturally productive areas in the world. Often left out of this picture are the farmworkers who make it possible. Within this farmworker community, females are a sub-class that has been even more marginalized. This thesis investigates the gendered aspects of fieldwork and exposes female leadership working towards changing these specific struggles, such as sexual harassment in the fields, domestic abuse, pesticide exposure, and the perpetuation of submissive gender roles in the household and workplace. An in-depth case study of Lideres Campesinas, a community- based grassroots …

Improving Human Health By Increasing Access To Natural Areas: Opportunities And Risks, Bradford S. Gentry, David Krause, Karen A. Tuddenham, Sarah Barbo, Benjamin D. Rothfuss, Christopher Rooks

Yale School of the Environment Publications Series

Report of the 2013 Berkley Workshop

Held at the Pocantico Center of the Rockefeller Brothers Fund, Tarrytown, NY - July 2013

Winter Survival Strategies Of Benthic Invertebrates In Temporary Habitats In A Northern Minnesota Lake, Cal Oldenburg

Journal of Earth and Life Science

During the winter months in the northern hemisphere, above 40 degrees latitude, a freezing event occurs that can last several months. Some lakes may have large portions of the shallow littoral zone frozen completely solid down into the sediments. Invertebrates affected by these events have developed survival strategies to cope with the harsh environment. The two main strategies for invertebrates in these areas are to either migrate to a different area and recolonize the original area when it becomes available again, or to burrow into the sediments and withstand the freezing. A 1- month study took place on Lake Bemidji …

The Spread Of Exotic Plant Species At Mount St. Helens: The Roles Of A Road, Disturbance Type And Post-Disturbance Management, Lindsey Karr

Environmental Science and Management Professional Master's Project Reports

The landscape of Mount St Helens was dramatically transformed when it erupted on May 18, 1980, creating an outstanding opportunity for ecologists to study succession following a large, intense, natural disturbance. Within the expansive (600 km²) blast area there is varied ownership and a mix of management objectives for the post-eruption landscape. On lands administered by the U.S. Forest Service, there are portions of the blast area that have been designated as a National Volcanic Monument, where the primary management objective is to allow for natural succession to proceed substantially unimpeded. In other areas outside the Monument, salvage …

New Mexico Water Law Capsules, Stephanie Tsosie

Water Matters!

This article contains a list some of the key cases decided in the state and federal courts of New Mexico with very brief descriptions of the rulings. The finalized cases have been arranged by topic. This chapter is intended to be a quick and handy reference guide and not a thorough summary of the facts and law of each case. This year we have also included a list of water law statutes.

Water Conservation, Consuelo Bokum

Water Matters!

New Mexico always has had periods of water shortages, some far more long lasting and devastating than others. As warming temperature and changing weather patterns continue to develop, the likelihood that water shortages—like those felt throughout the state from 2010 through 2013—will occur with greater frequency. These changes can and have caused significant economic and environmental damage, and the risk of more harm will not improve unless we improve our water management significant.

Drought, Adrian Oglesby

Water Matters!

New Mexico is renowned for its high deserts, mild climate, and abundant sunshine. Incidentally, these physical attributes, which make New Mexico so unique and beautiful, are also characteristic of a naturally dry environment. The state has been subjected to severe drought conditions in the past, alternating with times of uncharacteristically high supplies of moisture upon which its population has at times over-relied.

This article will provide various definitions of drought and a short history of drought in New Mexico; discuss impacts of drought on the state’s human water user communities and environment; discuss in brief the priority call and water …

Priority Administration, Ed Merta

Water Matters!

Since the turn of the twenty first century, drought conditions have frequently stricken much of New Mexico. Such intervals of extreme dryness have been a permanent, recurring feature of the state’s climate for at least two thousand years, according to tree ring data and other scientific evidence. Some of these past droughts lasted for decades, exceeding in severity the Dust Bowl of the 1930sand the great New Mexico drought of the 1950s. Today, climate change models indicate that the Southwest will likely become even hotter, potentially making future droughts in New Mexico more extreme. Managing water shortages promises to become …

Active Water Resource Management, Paul Bossert, Gregory C. Ridgley

Water Matters!

For decades, most of the waters of the State of New Mexico have been the subject of water rights adjudications to establish all the water rights. Stream systems and sub-basins geographically define the adjudications. There are twelve active cases. However, complete adjudication of all New Mexico water rights is still many years away. Meanwhile, water use in the state has evolved.New water users increasingly look to acquire existing water rights rather than developing new rights. Decisions on administration, distribution, and redistribution of water have to be made.

It was widely held, though not unanimously, that the State Engineer needed greater …

Domestic Wells, Paul Bossert, Sarah Armstrong

Water Matters!

The domestic well statutes direct that the State Engineer “shall” issue a permit for certain types of temporary or low volume wells, including wells for household use. For the past fifty-five years, the Office of the State Engineer (OSE) has interpreted this to mean that such permits are granted with no evaluation, public notice, or hearing.

Water For New Mexico Rivers, Beth Bardwell, Adrian Oglesby

Water Matters!

The Rio Grande, the Pecos, the Gila, the San Juan, the Canadian—New Mexico’s rivers are synonymous with the state’s culture and natural heritage. New Mexicans overwhelmingly care about the health of the state’s rivers and that includes flows to support fish and river dependent wildlife. Rivers, wetlands, and riparian areas comprise a very small part of our landscape—a mere 1 percent. This 1 percent plays an essential role in renewing the state’s water supply for its two million residents; for sustaining the state’s second largest industry—tourism; for producing food and fiber; and for sustaining New Mexico’s web of life. Eighty …

Inter-Basin Water Transfers, Anne Minard

Water Matters!

Inter-basin water transfers move water from one watershed to another. As droughts constrict the availability of water, and cities grow larger and thirstier, such transfers are increasingly being eyed as a solution. Although inter-basin transfers usually do not increase the overall availability of water in a state, they can move water to where it is needed most. Some of the main proponents of inter-basin transfers are pro-growth city and state governments as the re-allocation of water across watersheds allows for flexibility in planning for future growth.

Navajo-Gallup Water Supply Project, Jerold Widdison, Pat Page

Water Matters!

In March of 2009, the Congress passed and President Obama signed into law the“Omnibus Public Land Management Act of 2009". The Project is a major endeavor for northwestern New Mexico. In one sense,authorization of the project culminates years of work. In another sense, it means the beginning of many additional years of effort. There is much to be done to construct and carry the project forward to reality, including work for the federal government,the State of New Mexico, the Navajo Nation, and the city of Gallup. In view of the Project’s magnitude, this article reviews only its major aspects