Digital Commons Network^™

A Need And A Concern: Reducing Fuels In The Riparian Areas Of Southwestern Oregon, Shari Anstedt

Joint Fire Science Program Briefs (2007-2012)

Sophisticated in composition but small in scale, a riparian area is a fertile ecosystem of various plant and animal species that occurs along watercourses or water bodies. In the Applegate River sub-basin of southwestern Oregon, there is little understanding on how prescribed fi re may affect these areas. According to several studies, fire was historically an important component in some western riparian areas of both intermittent and perennial streams, burning at the same frequency and intensity as the associated upland areas. Due to a lack of supportive documentation and locally-pertinent data and the perception that the complex ecosystems may be …

Sandhill Cranes Of Coastal British Columbia: Results Of Helicopter Surveys And Preliminary Observations Of Habitat Use, Krista Roessingh, Briony Penn

Proceedings of the North American Crane Workshop

A pilot study on sandhill cranes (Grus canadensis) was conducted on the central coast of British Columbia in May 2006, followed by 2 summers of inventory and observation in 2007 and 2008. Fieldwork consisted of gathering local knowledge of crane locales, helicopter and boat surveys, and observations from blinds. We located 29 nest sites on 14 different islands and 1 mainland peninsula, as well as several beach foraging areas and bog roost sites. Observed average crane and nest density in areas of suitable habitat was 0.21/km² and 0.044/km², respectively, for 2007 and 2008. Nest and …

Seasonal Home Ranges And Fidelity To Breeding Sites Among Ringed Seals, Brendan P. Kelly, Oriana H. Badajos, Mervi Kunnasranta, John R. Moran, Micaela Martinez-Bakker, Peter Boveng, Douglas Wartzok

United States Department of Commerce: Staff Publications

Population structure and patterns of habitat use among ringed seals (Phoca hispida) are poorly known, in part because seasonal movements have not been adequately documented. We monitored the movements of 98 ringed seals in the Beaufort and Chukchi seas between 1990 and 2006 using three forms of telemetry. In the winter—spring period (when the seals were occupying shorefast ice), we used radio and ultra-sonic tags to track movements above and below the ice, respectively. We used satellite-linked transmitters in summer and fall (when the seals ranged away from their winter sites) to track at-sea movements. In the shorefast …

The Influence Of Nutrients And Physical Habitat In Regulating Algal Biomass In Agricultural Streams, Mark D. Munn, Jeffrey Frey, Anthony Tesoriero

United States Geological Survey: Water Reports and Publications

This study examined the relative influence of nutrients (nitrogen and phosphorus) and habitat on algal biomass in five agricultural regions of the United States. Sites were selected to capture a range of nutrient conditions, with 136 sites distributed over five study areas. Samples were collected in either 2003 or 2004, and analyzed for nutrients (nitrogen and phosphorous) and algal biomass (chlorophyll a). Chlorophyll a was measured in three types of samples, fine-grained benthic material (CHLFG), coarse-grained stable substrate as in rock or wood (CHLCG), and water column (CHLS). Stream and riparian habitat were characterized at each site. TP ranged from …

Mercury Concentrations In Fish From A Sierra Nevada Foothill Reservoir Located Downstream From Historic Gold-Mining Operations, Michael K. Saiki, Barbara A. Martin, Thomas W. May, Charles N. Alpers

United States Geological Survey: Staff Publications

This study examined mercury concentrations in whole fish from Camp Far West Reservoir, an 830-ha reservoir in northern California, USA, located downstream from lands mined for gold during and following the Gold Rush of 1848–1864. Total mercury (reported as dry weight concentrations) was highest in spotted bass (mean, 0.93 μg/g; range, 0.16–4.41 μg/g) and lower in bluegill (mean, 0.45 μg/g; range, 0.22– 1.96 μg/g) and threadfin shad (0.44 μg/g; range, 0.21–1.34 μg/g). Spatial patterns for mercury in fish indicated high concentrations upstream in the Bear River arm and generally lower concentrations elsewhere, including downstream near the dam. These findings coincided …

Crucial Role Of Mechanisms And Modes Of Toxic Action For Understanding Tissue Residue Toxicity And Internal Effect Concentrations Of Organic Chemicals, Beate I. Escher, Roman Ashauer, Scott Dyer, Joop L. M. Hermens, Jong-Hyeon Lee, Heather A. Leslie, Philipp Mayer, James P. Meador, Michael S. J. Warne

United States Department of Commerce: Staff Publications

This article reviews the mechanistic basis of the tissue residue approach for toxicity assessment (TRA). The tissue residue approach implies that whole-body or organ concentrations (residues) are a better dose metric for describing toxicity to aquatic organisms than is the aqueous concentration typically used in the external medium. Although the benefit of internal concentrations as dose metrics in ecotoxicology has long been recognized, the application of the tissue residue approach remains limited. The main factor responsible for this is the difficulty of measuring internal concentrations. We propose that environmental toxicology can advance if mechanistic considerations are implemented and toxicokinetics and …

Mortality Patterns Of Army Chemical Corps Veterans Who Were Occupationally Exposed To Herbicides In Vietnam, Yasmin Cypel, Han Kang

United States Public Health Resources

PURPOSE: This research examined the risk of disease-related mortality of the Army Chemical Corps (ACC) veterans who handled/sprayed herbicides in Vietnam in comparison with their non-Vietnam veteran peers or U.S. men.

METHODS: Vital status was determined through December 31, 2005. All-cause mortality and cause-specific mortality were compared for individuals who served in Vietnam (n Z 2872) versus those who did not (n Z 2737). Similar analyses were completed on a subset of the original Vietnam cohort that consisted of individuals who either reported spraying herbicide (n Z 662) or not (n Z 811). The observed deaths for each …

The Communicator, Volume 6, Issue 1, February 2010

The Communicator: News from the Nebraska Cooperative Fish and Wildlife Research Unit

New Faces (Christopher Jorgensen; Ryan Stutzman; Christina Hoffman) NSF Assistantships New Research Assessing Landscape Constraints on Habitat Management of Upland Birds Avian Conservation in the Prairie Pothole Region: Understanding the Links Between Climate, Ecosystem Processes, Wetland Management, and Bird Communities Missouri River Mitigation: Implementation of Amphibian Monitoring and Adaptive Management for Wetland Restoration Evaluation Research Highlight Monitoring, Mapping and Risk Assessment for Non-Indigenous Invasive Species in Nebraska (Nebraska Invasive Species Project) ANNUAL MEETING Conferences/Meetings/Workshops Graduate Student News (Michelle Hellman; Christina Hoffman; Christopher Jorgensen; Kristine Nemec; Ryan Stutzman) Teaching

Integrating Population Modeling Into Ecological Risk Assessment, Valery E. Forbes, Peter Calow, Volker Grimm, Takehiko Hayashi, Tjalling Jager, Annemette Palmqvist, Rob Pastorok, Dan Salvito, Richard Sibly, Julann Spromberg, John Stark, Richard A. Stillman

Valery Forbes Publications

Current approaches to ecological risk assessment (ERA) are not sufficient to address environmental protection goals stated in current regulations in the European Union, North America and elsewhere. For example, the data used to estimate the likelihood of adverse ecological effects typically include responses of survival, growth, or reproduction of individuals measured under constant and typically favorable laboratory conditions. But these organism-level endpoints are far removed from the ecological features that the process aims to protect (i.e., the long-term persistence of populations of species in space and time under naturally varying field conditions and in the presence of other stressors). Ecological …

Variation In Leaf Stomatal Traits Of 28 Tree Species In Relation To Gas Exchange Along An Edaphic Gradient In A Bornean Rain Forest, Sabrina E. Russo, Whitney Logan Cannon, Christian Elowsky, Sylvester Tan, Stuart J. Davies

School of Biological Sciences: Faculty Publications

Premise of the study: Quantifying variation in functional traits associated with shifts in the species composition of plant communities along resource gradients helps identify environmental attributes important for community assembly. Stomates regulate the balance between carbon assimilation and water status in plants. If environmental attributes affecting photosynthetic water-use efficiency govern species distribution along an edaphic gradient, then adaptive variation in stomatal traits of plant species specializing on different soils should reflect belowground resource availability.

Methods: We tested this hypothesis by quantifying stomatal trait variation in understory saplings of 28 Bornean tree species in relation to gas exchange and …

Contributors

Documentary Editing: Journal of the Association for Documentary Editing (1979–2011)

Contributors to Documentary Editing: Journal of the Association for Documentary Editing, Volume 31: 2010

Transforming Teaching Cultures: Departmental Teaching Fellows As Agents Of Change, Cassandra Volpe Horii

To Improve the Academy: A Journal of Educational Development

The Departmental Teaching Fellows (DTF) program of the Derek Bok Center for Teaching and Learning at Harvard University employs doctoral students as peer teaching mentors. Four years of program assessment data include quantitative work inventories, surveys and self-reports, interviews of faculty and administrators, and a survey of all graduate students recently teaching in arts and sciences. Observed program outcomes include (1) better informal support for teaching, (2) higher quality and quantity of interactions between graduate students and faculty on teaching, and (3) more systematic opportunities for teaching-related professional development. Qualitative assessment data suggest that the DTFs occupy several liminal positions …

Review Of Listening To The Land: Native American Literary Responses To The Landscape By Lee Schweninger, Kelli Lyon Johnson

Great Plains Quarterly (through 2013)

In Listening to the Land, Lee Schweninger demonstrates a Native American connection to Mother Earth to be a prevailing stereotype in cultural representations of Indigenous peoples in literature, television, and film. While refusing to dismiss "an indigenous relationship to, appreciation for, awareness of, or understanding of the land that is significantly different from non-Indian relationships," Schweninger analyzes the complicated portrayal of the landscape in Native American literature in the context of this stereotype, which he calls the "Land Ethic Stereotype," the framework with which he begins his study of a wide range of twentieth-century Native writers from a number …

Niobrara National Scenic River Condition Assessment, Sunil Narumalani, Gary D. Willson, Christine K. Lockert, Paul B. T. Merani

United States National Park Service: Publications

Executive Summary

Niobrara National Scenic River spans a 122-km (76-mile) long reach of the Niobrara River in rural, north-central Nebraska. The scenic river encompasses 9,338 ha (23,074 acres) of land and water, all of which is in private ownership, except for about 320 ha (790 acres). Because the scenic river does not own land, it achieves management goals by coordinating and collaborating with federal, state, and local jurisdictions and private landowners.

The central Niobrara River Valley is often referred to as a “biological crossroads” with plant and animal species representative of northern boreal forest, eastern deciduous forest, rocky mountain coniferous …

Place As Text: Approaches To Active Learning (Second Edition), Bernice Braid, Ada Long

National Collegiate Honors Council Monographs

CONTENTS

Dedication and Acknowledgments

Preface to the Second Edition — Ada Long and Bernice Braid

Introduction — Bernice Braid

Honors Semesters: Anatomy of Active Learning — William Daniel

Honors Semesters: An Architecture of Active Learning — Bernice Braid

Internal Assessment of Honors Semesters — Ann Raia

External Evaluation of Honors Semesters — Ada Long

Student Perspectives on Honors Semesters — Elizabeth Beck

Other Structural Models of Active Learning

City as Text™ — Bernice Braid

Faculty Institutes — William Daniel

Summer High School Field Experiences — Bernice Braid

Sleeping Bag Seminars — Joan Digby

College Recruitment Exercises — Bernadette Low

Orientation …

University Of Nebraska- Lincoln: Fact Book 2009-2010

University of Nebraska-Lincoln Administration: Reports, Papers, Publications, and Presentations

Fact Book Table of Contents

General Information

UNL Core Values ....................................................................... 4

Role and Mission Statement .............................................................................. 5

Institutional & Professional Accreditations ........................................................... 8

UNL Organizational Chart ............................................................................... 10

Student Credit Hours

Fall SCH Since 1979 .......................................................................... 11

SCH by College and Student Level, Fall & Spring Semesters, 5 Year Trend ...... 12

SCH by College and Student Level, Fall Semester, 5 Year Trend .................... 13

SCH by College and Student Level, Spring Semester, 5 Year Trend ................. 14

Summer Sessions Student Credit Hours ............................................ 15

Retention, Degrees and Majors

Student Retention & Graduation Rate Analysis ................................................. 16

Total Degrees …

Wildlife Conservation Sunflower Plots And Croplands As Fall Habitat For Migratory Birds, Heath M. Hagy, George M. Linz, William J. Bleier

United States Department of Agriculture Wildlife Services: Staff Publications

Agricultural fields are often overlooked as post-breeding and migratory bird habitat, even though many species use row-crop fields in the northern Great Plains. We monitored bird use, crop and non-crop vegetation characteristics and abundance, and land use around (≤2.4 km) 35 8-ha Wildlife Conservation Sunflower Plots (WCSP) and one commercial sunflower and non-sunflower row-crop field, paired with each WCSP, in fall 2004 and 2005. We excluded four species of blackbirds from our analysis that commonly form large foraging flocks and ubiquitously use agricultural fields. A diverse community of migratory birds used WCSP and commercial sunflower compared to other non-sunflower crops …

Effects Of The Antimicrobial Tylosin On The Microbial Community Structure Of An Anaerobic Sequencing Batch Reactor, Toshio Shimada, Xu Li, Julie L. Zilles, Eberhard Morgenroth, Lutgarde Raskin

Department of Civil and Environmental Engineering: Faculty Publications

The effects of the antimicrobial tylosin on a methanogenic microbial community were studied in a glucosefed laboratory-scale anaerobic sequencing batch reactor (ASBR) exposed to stepwise increases of tylosin (0, 1.67, and 167 mg/L). The microbial community structure was determined using quantitative fluorescence in situ hybridization (FISH) and phylogenetic analyses of bacterial 16S ribosomal RNA (rRNA) gene clone libraries of biomass samples. During the periods without tylosin addition and with an influent tylosin concentration of 1.67 mg/L, 16S rRNA gene sequences related to Syntrophobacter were detected and the relative abundance of Methanosaeta species was high. During the highest tylosin dose of …

In Memory William B. Jackson 1926-2010, Michael W. Fall

United States Department of Agriculture Wildlife Services: Staff Publications

DR. WILLIAM B. JACKSON of Chicago, Illinois, passed away July 15, 2010. He was a scientist, teacher, husband, father, grandfather, and friend. Over the years, he served as an advisor and mentor to many people who found their way to his classes or offices at Bowling Green State University (BGSU).

He was born in Milwaukee, Wisconsin, September 10, 1926, and spent many hours collecting insects and watching birds, becoming president of his high school nature club and an Eagle Scout. He earned B.A. and M.A. degrees from the University of Wisconsin, and his Sc.D. in vertebrate ecology from Johns Hopkins …

Sociology Collection Development Policy, David C. Tyler

University of Nebraska-Lincoln Libraries: Collection Development Policies

The sociology collection supports the teaching, research and service activities of the entire university community. Its primary audience is the faculty, staff, and students of the Department of Sociology in the College of Arts and Sciences. Its primary focus is support for the undergraduate and graduate curricula for sociology. Specific and transient research needs of sociology faculty and graduate students should be supplemented through Interlibrary Loan. Materials are not purchased for the general public, though they may benefit from the collection. While the collection focuses on works classified in Sociology (HM) – Social Pathology. Social and Public Welfare. Criminology (HV), …

Geography & Giscience Collection Development Policy, David C. Tyler

University of Nebraska-Lincoln Libraries: Collection Development Policies

The geography collection supports the teaching, research and service activities of the entire university community. Its primary audience is the faculty, staff, and students of the Faculty of Geography & GIScience in the School of Natural Resources. Its primary focus is support for the undergraduate and graduate curricula for geography. Specific and transient research needs of geography faculty and graduate students should be supplemented through Interlibrary Loan. Materials are not purchased for the general public, though they may benefit from the collection. While the collection focuses on works classified in Geography G through Human Ecology. Anthropogeography GF, curriculum and research …

Geosciences Collection Development Policy, Adonna Fleming

University of Nebraska-Lincoln Libraries: Collection Development Policies

The geosciences collection supports the teaching, research and service activities of the entire university community. Primary users are the faculty, staff, and students of the Geosciences Department. Its essential focus is support for the undergraduate and graduate curricula for the Geosciences Department. The collection is supplemented through interlibrary loan services whenever special curriculum and research needs of geosciences faculty and students arise. The UNL Libraries are classed as a regional depository library for U. S. government documents. The geosciences collection contains most publications of the U.S. Geological Survey, including an extensive collection of topographic and geological maps. Although materials are …

Agricultural Economics Collection Development Policy, Rebecca Bernthal

University of Nebraska-Lincoln Libraries: Collection Development Policies

The Agricultural Economics Department is part of the Institute of Agriculture and Natural Resources (IANR) and the College of Agriculture and Natural Resources (CASNR). The faculty has appointments in the College of Agricultural Sciences and Natural Resources (CASNR), the Agricultural Research Division (ARD), and/or the Cooperative Extension Division (CED). The Department was established in 1909 as the Department of Agronomy and Farm Management. In 1911 it was renamed as the Department of Farm Management and then in 1919 became the Department of Rural Economics. Since 1949 the Department has been known as the Department of Agricultural Economics. By 1920 the …

Relating Fires’ Effect On Forest Succession And Forest's Effect On Fire Severity In One Burned And Unburned Environment, Tyler Jay Seiboldt

Department of Environmental Studies: Undergraduate Student Theses

Wildfires are a natural part of many forest ecosystems and play a vital role in maintaining their health.  Wildfires can have a critical influence on a landscapes plant community through their relative frequency, seasonality, and severity.  One of the most heavily influenced regions by wildfire disturbance is the Klamath Mountain region of California.  I looked at the affect a wildfires severity had on the Whiskey creek valley within the Whiskeytown National Recreation Area.  8 tree species and 4 flower species were examined on both the burned and unburned regions within this valley nearly a year after the wildfire (May 17-23 …

Agronomy & Horticulture Collection Development Policy, Elaine Maytag Nowick

University of Nebraska-Lincoln Libraries: Collection Development Policies

The Agronomy & Horticulture Collection supports the RESEARCH, graduate, and undergraduate education mission of the department. It also provides information resources for related groups in the university such as Cooperative Extension, RESEARCH & Extension Centers, the Statewide Arboretum, and the Water Center. The Department is also supported by materials in other subject areas such as Plant Pathology, Biology, Biochemistry, Microbiology, and Statistics.

Nefdc Exchange, Volume 21, Number 1, Fall 2009, New England Faculty Development Consortium

New England Faculty Development Consortium Exchange

Contents

Message from the President: A Reflection of a Different Light - Tom Thibodeau, New England Institute of Technology

From the editors - Jeanne Albert, Donna Qualters, and Naomi Migliacci

New England Faculty Development Consortium Fall 2009 Conference, November 13, 2009, Worcester, Massachusetts, United States; theme: When Questioning is the Answer: Reflective Practice for College Faculty; keynote presentation by Stephen Brookfield, University of St. Thomas

Excerpt from Becoming a Critically Reflective Teacher, Jossey-Bass, 1995 by Stephen Brookfield

NEFDC Fall 2009 Conference Agenda

Connecting with others

Contemplative and Transformative Pedagogy - Arthur Zajonc, Amherst College

SAVE the date! NEFDC 2010 Spring …

The Early Development Of Gender Differences, Matthew H. Mcintyre, Carolyn P. Edwards

Department of Psychology: Faculty Publications

This article reviews findings from anthropology, psychology, and other disciplines about the role of biological factors in the development of sex differences in human behavior, including biological theories, the developmental course of sex differences, and the interaction of biological and cultural gendering processes at different ages. Current evidence suggests that major biological influences on individual differences in human gender, to the extent that they exist, operate primarily in early development, during and especially prior to puberty. Biological effects are likely to be mediated by relatively simple processes, like temperament, which are then elaborated through social interactions (as with mother and …

Retrieval Of Foliar Information About Plant Pigment Systems From High Resolution Spectroscopy, Susan L. Ustin, Anatoly A. Gitelson, Stéphane Jacquemoud, Michael Schaepman, Gregory P. Asner, John A. Gamon, Pablo Zarco-Tejada

School of Natural Resources: Faculty Publications

Life on Earth depends on photosynthesis. Photosynthetic systems evolved early in Earth history and have been stable for 2.5 billion years, providing prima facie evidence for the significance of pigments in plant functions. Photosynthetic pigments fill multiple roles from increasing the range of energy captured for photosynthesis to protective functions. Given the importance of pigments to leaf functioning, greater effort is needed to determine whether individual pigments can be identified and quantified in vivo using high fidelity spectroscopy. We review recent advances in detecting plant pigments at the leaf level and discuss successes and reasons why challenges remain for robust …

School Of Natural Resources Comprehensive Five-Year Review

School of Natural Resources: Documents and Reviews

No abstract provided.

Lead Detection In Water: Using Hydroxyapatite And Atomic Absorption, Nicolas Cantarero

Department of Environmental Studies: Undergraduate Student Theses

Hydroxyapatite is a mineral that is very inexpensive, easily made, and binds well to lead. In this procedure its application will be paired with Flame Atomic Absorption Spectroscopy (Flame AA) to detect lead concentrations in water to ppb levels. While ppb concentrations of lead are too dilute to produce a response from the Flame AA by using Hydroxyapatite to concentrate lead molecules from a larger volume and dissolving the Hydroxyapatite into a smaller volume it may be able to produce a response. The method could provide an inexpensive, efficient, and accurate way to detect lead concentrations to the ppb level …