Digital Commons Network^™

Limited Occurrence Of Denitrification In Four Shallow Aquifers In Agricultural Areas Of The United States, Christopher T. Green, Larry J. Puckett, John Karl Böhlke, Barbara A. Bekins, Steven P. Phillips, Leon J. Kauffman, Judith M. Denver, Henry M. Johnson

United States Geological Survey: Staff Publications

The ability of natural attenuation to mitigate agricultural nitrate contamination in recharging aquifers was investigated in four important agricultural settings in the United States. The study used laboratory analyses, field measurements, and flow and transport modeling for monitoring well transects (0.5 to 2.5 km in length) in the San Joaquin watershed, California, the Elkhorn watershed, Nebraska, the Yakima watershed, Washington, and the Chester watershed, Maryland. Ground water analyses included major ion chemistry, dissolved gases, nitrogen and oxygen stable isotopes, and estimates of recharge date. Sediment analyses included potential electron donors and stable nitrogen and carbon isotopes. Within each site and …

Late-Seasonal A Ctivity And Diet Of The Eveninc Bat (Nycticeius Humeralis) In Nebraska, Keith Geluso, Jason P. Damm, Ernest W. Valdez

United States Geological Survey: Staff Publications

In North America, Nebraska represents part of the northwestern edge of the distribution for the evening bat (Nycticeius humeralis). To date, little information on this bat’s natural history has been published from the state or from other parts of the Great Plains. Here we report on aspects of its natural history in Nebraska from 2 localities. In late summer and early autumn of 2006, we documented individuals farther west in Nebraska (Harlan County) than previously reported and determined that individuals fed mainly on Coleoptera and Hymenoptera. In 2006, evening bats appeared to migrate from Nebraska during late September–early …

Sacramento-San Joaquin Delta Regional Ecosystem Restoration Implementation Plan, Charles N. Alpers, Collin Eagles-Smith, Chris Foe, Susan Klasing, Mark C. Marvin-Dipasquale, Darell G. Slotton, Lisamarie Windham-Myers

United States Geological Survey: Staff Publications

Mercury has been identified as an important contaminant in the Delta, based on elevated concentrations of methylmercury (a toxic, organic form that readily bioaccumulates) in fish and wildlife. There are health risks associated with human exposure to methylmercury by consumption of sport fish, particularly top predators such as bass species. Original mercury sources were upstream tributaries where historical mining of mercury in the Coast Ranges and gold in the Sierra Nevada and Klamath-Trinity Mountains caused contamination of water and sediment on a regional scale. Remediation of abandoned mine sites may reduce local sources in these watersheds, but much of the …

Introgression And Dispersal Among Spotted Owl (Strix Occidentalis) Subspecies, W. Chris Funk, Eric D. Forsman, Thomas D. Mullins, Susan M. Haig

United States Geological Survey: Staff Publications

Population genetics plays an increasingly important role in the conservation and management of declining species, particularly for defining taxonomic units. Subspecies are recognized by several conservation organizations and countries and receive legal protection under the US Endangered Species Act (ESA). Two subspecies of spotted owls, northern (Strix occidentalis caurina) and Mexican (S. o. lucida) spotted owls, are ESA-listed as threatened, but the California (S. o. occidentalis) spotted owl is not listed. Thus, determining the boundaries of these subspecies is critical for effective enforcement of the ESA. We tested the validity of previously recognized spotted …

Blood Parasites In Owls With Conservation Implications For The Spotted Owl (Strix Occidentalis), Heather D. Ishak, John P. Dumbacher, Nancy L. Anderson, John J. Keane, Gediminas Valkiūnas, Susan M. Haig, Lisa A. Tell, Ravinder N. M. Sehgal

United States Geological Survey: Staff Publications

The three subspecies of Spotted Owl (Northern, Strix occidentalis caurina; California, S. o. occidentalis; and Mexican, S. o. lucida) are all threatened by habitat loss and range expansion of the Barred Owl (S. varia). An unaddressed threat is whether Barred Owls could be a source of novel strains of disease such as avian malaria (Plasmodium spp.) or other blood parasites potentially harmful for Spotted Owls. Although Barred Owls commonly harbor Plasmodium infections, these parasites have not been documented in the Spotted Owl. We screened 111 Spotted Owls, 44 Barred Owls, and 387 owls …

Effects Of Vegetation And Background Noise On The Detection Process In Auditory Avian Point-Count Surveys, Krishna Pacifici, Theodore R. Simons, Kenneth H. Pollock

United States Geological Survey: Staff Publications

We used a bird-song simulation system to experimentally assess the effects of habitat, vegetation structure, and background noise on detection probability in aural avian point counts. We simulated bird songs of seven species in two habitats (mixed pine–hardwood forest and deciduous forest) and two leaf conditions (leaves on and leaves off) with two levels of background noise (~40 dB and ~50 dB). Estimated detection probabilities varied greatly among species, and complex interactions among all the factors existed. Background noise and the presence of leaves on trees decreased detection probabilities, and estimated detection probabilities were higher in mixed pine–hardwood forest than …

Tools And Technology Article: Estimation And Correction Of Visibility Bias In Aerial Surveys Of Wintering Ducks, Aaron T. Pearse, Patrick D. Gerard, Stephen J. Dinsmore, Richard M. Kaminski, Kenneth J. Reinecke

United States Geological Survey: Staff Publications

Incomplete detection of all individuals leading to negative bias in abundance estimates is a pervasive source of error in aerial surveys of wildlife, and correcting that bias is a critical step in improving surveys. We conducted experiments using duck decoys as surrogates for live ducks to estimate bias associated with surveys of wintering ducks in Mississippi, USA. We found detection of decoy groups was related to wedand cover type (open vs. forested), group size (1-100 decoys), and interaction of these variables. Observers who detected decoy groups reported counts that averaged 78% of the decoys actually present, and this counting bias …

Relations Between And Among Contaminant Concentrations And Biomarkers In Black Bass (Micropterus Spp.) And Common Carp (Cyprinus Carpio) From Large U.S. Rivers, 1995–2004, Jo Ellen Hinck, Christopher J. Schmitt, Mark R. Ellersieck, Donald E. Tillitt

United States Geological Survey: Staff Publications

Environmental contaminant and biomarker monitoring data from major U.S. river basins were summarized for black bass (Micropterus spp.) and common carp (Cyprinus carpio) sampled over a nine year period. Cumulative frequency distributions revealed taxon differences for many organochlorine residue concentrations, elemental contaminant concentrations, and biomarkers, but few gender differences were evident for chemical concentrations. Concentrations of dacthal, pentachloroanisole, p,p'-DDE, endosulfan sulfate, barium, cadmium, copper, manganese, lead, selenium, vanadium, and zinc were greater in carp than bass, but concentrations of mercury and magnesium were greater in bass. Gender differences were evident in bass for mercury and in carp …

Using The Fore-Sce Model To Project Land-Cover Change In The Southeastern United States, Terry Sohl, Kristi Sayler

United States Geological Survey: Staff Publications

A wide variety of ecological applications require spatially explicit current and projected land-use and land-cover data. The southeastern United States has experienced massive land-use change since European settlement and continues to experience extremely high rates of forest cutting, significant urban development, and changes in agricultural land use. Forest-cover patterns and structure are projected to change dramatically in the southeastern United States in the next 50 years due to population growth and demand for wood products [Wear, D.N., Greis, J.G. (Eds.), 2002. Southern Forest Resource Assessment. General Technical Report SRS-53. U.S. Department of Agriculture, Forest Service, Southern Research Station, Asheville, NC, …

Design Of A Naturalized Flow Regime—An Example From The Lower Missouri River, Usa, Robert B. Jacobson, David L. Galat

United States Geological Survey: Staff Publications

A group of river managers, stakeholders, and scientists met during summer 2005 to design a more naturalized flow regime for the Lower Missouri River (LMOR). The objective was to comply with requirements under the U.S. Endangered Species Act to support reproduction and survival of threatened and endangered species, with emphasis on the endangered pallid sturgeon (Scaphirhynchus albus), while minimizing negative effects to existing social and economic benefits of prevailing river management. Specific hydrograph requirements for pallid sturgeon reproduction are unknown, hence much of the design process was based on features of the natural flow regime. Environmental flow components …

Impact Of Drought On Prehistoric Western Native Americans, Larry Benson

United States Geological Survey: Staff Publications

Some droughts that occurred during the so-called Medieval Climate Anomaly (approximately AD 800-1300) appear to have been catalysts for major changes in settlement patterns of two western Native American groups - the Lovelock culture in Nevada’s Great Basin and the Anasazi people of the Four Corners area. Both groups’ subsistence bases were impacted by diminished water supplies associated with prolonged drought, leading to the dispersal of these Native Americans from their former territories.

Tree-ring-based Palmer Drought Severity Index (PDSI) reconstructions by Cook et al. (2004) indicate that over 50% of the western U.S. experienced drought conditions during the middle-12th and …

Grenetic Evidence Of Intercontinental Movement Of Avian Influenza In A Migratory Bird: The Northern Pintail (Anas Acuta), Anson V. Koehler, John M. Pearce, Paul L. Flint, J. Christian Franson, Hon S. Ip

United States Geological Survey: Staff Publications

The role of migratory birds in the movement of the highly pathogenic (HP) avian influenza H5N1 remains a subject of debate. Testing hypotheses regarding intercontinental movement of low pathogenic avian influenza (LPAI) viruses will help evaluate the potential that wild birds could carry Asian-origin strains of HP avian influenza to North America during migration. Previous North American assessments of LPAI genetic variation have found few Asian reassortment events. Here, we present results from whole-genome analyses of LPAI isolates collected in Alaska from the northern pintail (Anas acuta), a species that migrates between North America and Asia. Phylogenetic analyses …

Test 1898a: Case Ih Magnum 215 Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

The Right Start: Reflections On A Departmentally Based Graduate Course On Teaching, Craig E. Nelson

Professional and Organizational Development Network in Higher Education: Archives

Full credit courses on teaching offered by academic departments for their own graduate students and postdocs have many advantages. Many students come to graduate school because they want teaching to be an important part of their future professional life. Most who are hired in academia will go to jobs where teaching is important. Indiana University’s Graduate School noted that 95% of its PhDs who landed tenure-track positions found those positions at liberal arts colleges, smaller comprehensive universities, and urban institutions. They noted that their teaching experience at Bloomington did not necessarily prepare them fully for these jobs.

I offered a …

Center For Grassland Studies Newsletter, Winter 2008, Volume 14, No. 1

Center for Grassland Studies: Newsletters

Contents:

Organic Matter -- Should It Matter? A Golf Course Perspective by Roch Gaussoin, Department of Agronomy and Horticulture, UNL

UNL-USDA Study: Major Net Energy Gain from Switchgrass-based Ethanol

Using the Corn Stalk Grazing Calculator as a Decision Aid by Aaron Stalker, Department of Animal Science and Matt Stockton, Department of Agricultural Economics, West Central Research and Extension Center, UNL, North Platte

Avian Response to Invasive Tree Removal on Remnant Prairie Pastures in Southeast Nebraska by Elizabeth Forbus and Craig Allen, School of Natural Resources, UNL

Conserving Wildlife and A Way of Life: Conservancy Launches Grass Exchange Program

Refocusing The Revolution: A New Research Agenda For Geoscience Education., Elizabeth B. Lewis

Department of Teaching, Learning, and Teacher Education: Presentations

Geoscience Education: Stuck in Low Gear or Poised for a Breakthrough?

We must act quickly & broaden approaches to four problems

• Falling geoscience undergraduate enrollments
• Lagging diversity in the geosciences
• Insufficient secondary Earth & space science teacher supply
• Low (7%) high school ESS course offerings and enrollment

Leverage existing educational research literature & theory

• Curriculum stability and change
• Culture, gender, and science education
• Socio-cultural models of science and theories of learning

Develop a new research agenda to spark the Revolution

Nebraska Summary: S721 New Holland T4030, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Nebraska Summary: S765 New Holland Td5030, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Test 1938a: Case Ih Dx 50 Also Farmall 50, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Strategic Importance Of Higher Education And Research In Positioning Gujarat For Global Competitiveness, Amit P. Sheth

Kno.e.sis Publications

No abstract provided.

Instructions For Authors, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

The Federal Role In Managing The Nation's Groundwater, John D. Leshy

UC Law Environmental Journal

No abstract provided.

Factors Affecting The Spread Of A Bioterrorist Agent Throughout A Building, William A. Cantrell

Inquiry: The University of Arkansas Undergraduate Research Journal

Bioterrorism has become a greater concern for Americans since the 2001 anthrax letters. Recent studies have explored the possibilities of biological attacks, and most deal with possible large-scale attacks. However, there is reason to believe that small-scale attacks are more likely. Even though there have been investigations of the postal delivery system and the spread of bioagents through mail, few if any studies have looked at attack on a single building and the resultant spread form room to room. One particular method of attacking a building would be a single-even release of an aerosol bioagent in the building. This paper …

Concerning Licensure Of Home Care Agencies By The Department Of Public Health And Environment, And Making An Appropriation In Connection Therewith., Colorado General Assembly

Session Laws 2001-Present

No abstract provided.

Three Questions That Will Make You Rethink The U.S.-China Intellectual Property Debate, 7 J. Marshall Rev. Intell. Prop. L. 412 (2008), Peter K. Yu

UIC Review of Intellectual Property Law

Commentators have attributed China’s piracy and counterfeiting problems to the lack of political will on the part of Chinese authorities. They have also cited the many political, social, economic, cultural, judicial, and technological problems that have arisen as a result of the country’s rapid economic transformation and accession to the WTO. This provocative essay advances a third explanation. It argues that the failure to resolve piracy and counterfeiting problems in China can be partly attributed to the lack of political will on the part of U.S. policymakers and the American public to put intellectual property protection at the very top …

Degradation Of Chlorinated Ethenes In Mesocosms Simulating A Constructed Wetland, At Wpafb, Ohio, Dibyendu Mukherjee

Browse all Theses and Dissertations

The main purpose of this research was to study the degradation of chlorinated ethenes in upwardflowing mesocosms, simulating a constructed wetland at Wright Patterson Air Force Base (WPAFB) in Dayton, Ohio. This research was intended to compare biogeochemical processes and PCE degradation occurring in the mesocosms and in the field site. This research also tries to look at the effects of vegetation and season on the degradation efficiency of the mesocosms. Twelve PVC column reactors were built within the greenhouse of Wright State University in September 2005 to simulate the hydraulic conditions of a constructed wetland at WPAFB. The columns …

2008-2009 - Graduate Catalog, Office Of The Registrar, East Tennessee State University

Graduate Academic Catalogs

No abstract provided.

Racial Migrations, Tucker Culbertson

St. Thomas Law Review

The following three articles by Dominique Legros, Robert Koulish, and Cesar Cuauhtémoc Garcia Hernández concern laws, politics, and philosophies involving transnational migration. Individually and in sum, these articles productively engage with the radical multidimensionality of both racial identity and racial governance. In this introduction, I will briefly describe the articles and offer very few comments thereon, most of which emphasize what I believe to be the articles most important cumulative contribution regarding the complexity and centrality of race within forces and discourses of citizenship, territory, sovereignty, and nationality. Hence, the title of this introduction, which is intended to suggest both …

Of Inferior Stock: The Two-Pronged Repression Of Radical Immigrant Birth Control Advocates At The Turn-Of-The Twentieth Century, Cesar Cuahtemoc Garcia Hernandez

St. Thomas Law Review

This article addresses law's coercive function to quash birth control advocacy at the turn-of-the-twentieth century. Part II addresses the development of anti-obscenity legislation, especially at the federal level, to slow quelling support for birth control availability and usage. In particular, the article addresses the trend during the late 1800s in which the states and federal government prohibited sending birth control information or products through the mail. This section also explores the significant harassment, and both actual and threatened prosecution of birth control advocates that resulted from criminal prohibitions. Part III surveys the rampant nativism that swept policymaking circles during this …

Puerto Rico As A Critical Locality: Is A Post-Colonial Puerto Rico Possible - A Game-Theoretic Analysis Of The Impasses Over Puerto Rico's Status, F.E. Guerra Pujol

St. Thomas Law Review

The author applies the game-theoretic concept of the truel (or three-person duel) to the Puerto Rico status debate. In summary, the debate over Puerto Rico's future political status resembles a three-person, sequential, random-order truel in which no single player is able to eliminate the other two players. In addition, the author applies some concepts from evolutionary biology (path dependence) and behavioral economics (loss aversion) to explain the current impasse over Puerto Rico's status. Finally, the author examines recent strategic behavior in the U.S. Congress over Puerto Rican status.