Digital Commons Network^™

The Railroads Must Have Ties: A Legal History Of Forest Conservation And The Oregon And California Railroad Land Grant, 1887–1916, Sean M. Kammer

Department of History: Dissertations, Theses, and Student Research

Historians have! for the most part! left unchallenged a similar negative view of Edward H. Harriman, who headed both the Union Pacific and the Southern Pacific and was perhaps the most powerful of the railroad tycoons during the first decade of the twentieth century.4 Prior to Harriman's takeover of the Southern Pacific in 1901, that railroad's long-standing policy had been to subdivide and sell lands to farmers, miners, and loggers, the purpose being lito encourage long-term settlement, economic growth, and rail traffic," but Harriman questioned and ultimately rejected this policy.s In January 1903, he ordered the termination of sales of …

A Catalogue Of Everything In The World: Nebraska Stories, Yelizaveta P. Renfro

Department of English: Dissertations, Theses, and Student Research

A Catalogue of Everything in the World: Nebraska Stories is a collection of linked short stories, all set in Nebraska, that explore the ways in which the forces of geography—being from or choosing to live in a particular place—affect identity and influence the course of lives. They feature a wide range of characters, from a bus driver mourning the death of his infant daughter to an octogenarian former doctor preparing for her death, from a young girl trying to cope with her parents' divorce to a woman whose obsession with a decades-old crime has literally taken over her life. Just …

Combined Effects Of Heat Waves And Droughts On Avian Communities Across The Conterminous United States, Thomas P. Albright, Anna M. Pidgeon, Chadwick D. Rittenhouse, Murray K. Clayton, Brian D. Wardlow, Curtis H. Flather, Patrick D. Culbert, Volker C. Radeloff

National Drought Mitigation Center: Faculty Publications

Increasing surface temperatures and climatic variability associated with global climate change are expected to produce more frequent and intense heat waves and droughts in many parts of the world. Our goal was to elucidate the fundamental, but poorly understood, effects of these extreme weather events on avian communities across the conterminous United States. Specifically, we explored: (1) the effects of timing and duration of heat and drought events, (2) the effects of jointly occurring drought and heat waves relative to these events occurring in isolation, and (3) how effects vary among functional groups related to nest location and migratory habit, …

Age, Period, And Cohort Effects On U.S. Religious Service Attendance: The Declining Impact Of Sex, Southern Residence, And Catholic Affiliation, Philip Schwadel

Department of Sociology: Faculty Publications

I use repeated, cross-sectional data from 1972 to 2006 to analyze age, period, and cohort effects on Americans’ frequency of religious service attendance with cross-classified, random-effects models. The results show that the frequency of religious service attendance is relatively stable, with a modest period-based decline in the 1990s and little overall cohort effect. Although aggregate rates of attendance are stable, there are large changes across cohorts and periods in differences in attendance between men and women, southerners and non-southerners, and Catholics and mainline Protestants. These results serve as a reminder that aggregate trends can mask substantial changes among specific groups, …

Fairness, Justice And An Individual Basis For Public Policy, Douglas R. Oxley

Department of Political Science: Dissertations, Theses, and Student Research

Prior models of the policy process have examined how human characteristics can affect policy decision-making in such a way that it leads to aggregate effects on policy outcomes as a whole. I develop a model of the policy process which suggests that emotions related to fair and unfair experiences in the same policy domain are utilized by decision-makers as policy criteria. In the lab, I empirically tested this, and find that emotions and experience related to fairness do influence the policy decision to move away from the status quo alternative. Based upon this result, I simulated the evolution of a …

The Earliest House Sparrow Introductions To North America, Michael P. Moulton, Wendell P. Cropper Jr., Michael L. Avery, Linda E. Moulton

United States Department of Agriculture Wildlife Services: Staff Publications

Several authors have argued that three separate introductions of roughly 100 individuals were required initially to establish the House Sparrow (Passer domesticus) in the Brooklyn, New York area. We argue that these claims are in error and that the actual record suggests that it is likely the initial introduction of just 16 birds in 1851 was all that was required to establish the species in New York. We further suggest that a similar level of scrutiny of historical records will reveal more examples of misinterpretations and errors, casting doubt on the validity of studies that claim propagule pressure …

Numerically Predicting Seepage Gradient Forces And Erosion: Sensitivity To Soil Hydraulic Properties, Garey A. Fox, Derek M. Heeren, Glenn V. Wilson, E. J. Langendoen, Amanda K. Fox, Maria L. Chu-Agor

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Research has suggested that streambank seepage can be an important mechanism of bank instability; however, limited information is available on the level of soil characterization necessary to accurately predict seepage gradient forces and erosion. The objective of this research was to quantify the expected range of predicted seepage gradients for various degrees of site characterization. Uncertainty analysis on seepage gradient predictions was performed relative to variability in soil hydraulic properties. A two-dimensional unsaturated/saturated groundwater flow model was used to simulate a homogeneous soil layer for sand and loamy sand soils packed at various bulk densities, ρ_b. A pedotransfer …

Subspecies Status And Population Genetic Structure In Piping Plover (Charadrius Melodus), Mark P. Miller, Susan M. Haig, Cheri L. Gratto-Trevor, Thomas D. Mullins

United States Geological Survey: Staff Publications

Piping Plover (Charadrius melodus) is a migratory shorebird that is listed as endangered in Canada and the U.S. Great Lakes and as threatened throughout the rest of its breeding and winter range. We undertook a comprehensive molecular-genetic investigation to (1) address subspecific taxonomy, (2) characterize population genetic structure, and (3) infer past bottlenecks and demographic processes in this species. Analyses included individuals from 23 U.S. states and Canadian provinces and were based on mitochondrial DNA sequences (580 base pairs, n = 245) and 8 nuclear microsatellite loci (n = 229). Our findings provide support for separate Atlantic and …

Assessing The Potential For Luminescence Dating Of Basalts, S. Tsukamoto, G. A.T. Duller, A. G. Wintle, Daniel R. Muhs

United States Geological Survey: Staff Publications

The possibility of dating basalt using luminescence was tested on four samples with independent age control from Cima volcanic !eld, California, with the ultimate aim of assessing whether the technique could be used to date sediments on the surface of Mars. Previous analysis of these samples had demonstrated that the infrared stimulated luminescence (IRSL) signal is most suitable for dating as it showed the lowest fading rate among various luminescence signals. In this study, changes in equivalent dose as a function of preheat are described. The ages for the two youngest Cima samples agree with the independent ages based on …

Impacts Of Land Use/Land Cover Change On Climate And Future Research Priorities, Rezaul Mahmood, Roger A. Pielke Sr., Kenneth G. Hubbard, Dev Niyogi, Gordon Bonan, Peter Lawrence, Richard Mcnider, Clive Mcalpine, Andres Etter, Samuel Gameda, Budong Qian, Andrew Carleton, Adriana Beltran-Przekurat, Thomas Chase, Arturo I. Quintanar, Jimmy O. Adegoke, Sajith Vezhapparambu, Glen Connor, Salvi Asefi, Elif Sertel, David R. Legates, Yuling Wu, Robert Hale, Oliver W. Frauenfeld, Anthony Watts, Marshall Shepherd, Chandana Mitra, Valentine G. Anantharaj, Souleymane Fall, Robert Lund, Anna Treviño, Peter D. Blanken, Jinyang Du, Hsin-I Chang, Ronnie Leeper, Udaysankar S. Nair, Scott Dobler, Ravinesh Deo, Jozef Syktus

School of Natural Resources: Faculty Publications

Human activities have modified the environment for thousands of years. Significant population increase, migration, and accelerated socioeconomic activities have intensified these environmental changes over the last several centuries. The climate impacts of these changes have been found in local, regional, and global trends in modern atmospheric temperature records and other relevant climatic indicators.

An important human influence on atmospheric temperature trends is extensive land use/land cover change (LULCC) and its climate forcing. Studies using both modeled and observed data have documented these impacts (e.g., Chase et al. 2000; Kalnay and Cai 2003; Cai and Kalnay 2004; Trenberth 2004; Vose et …

Morphological And Molecular Characterization Of Discocriconemella Inarata, An Endemic Nematode From North American Native Tallgrass Prairies, Thomas O. Powers, Timothy Harris, Rebecca Higgins, Lisa Sutton, Kirsten S. Powers

Department of Plant Pathology: Faculty Publications

Discocriconemella inarata, a plant parasitic nematode species originally discovered in a virgin tallgrass prairie in northwest Iowa, was re-examined by molecular and morphological analyses of topotype material. This species has never been recorded in cultivated fields and could potentially serve as an indicator for high quality prairie habitats. DNA sequence from a conserved 3’ portion of the 18S ribosomal gene exhibited an identical match between D. inarata topotype specimens and topotype specimens of Mesocriconema xenoplax from Fresno, California. Higher resolution sequence analyses using the internal transcribed spacer 1 (ITS1) and a portion of the mitochondrial gene cytochrome b (cytb) …

The Whitings’ Concepts Of Culture And How They Have Fared In Contemporary Psychology And Anthropology, Carolyn P. Edwards, Marianne Bloch

Department of Psychology: Faculty Publications

This article presents a brief intellectual biography of John and Beatrice Whiting, followed by an examination of five key ideas that they put forward to the fields of psychology and anthropology through their theoretical and empirical writings. These key ideas are (a) the assumption of the psychic unity of humankind, (b) the cultural learning environment, (c) the psychocultural model, (d) the synergistic relationship of the disciplines of psychology and anthropology, and (e) the role of mothers as agents of social change through child-rearing roles as well as through various other ways they guide change in the communities and learning environments …

Ranching And State School Land In Cimarron County, Oklahoma, Jacqueline Vadjunec, Rebecca Sheehan

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

Ranchers in Cimarron County, Oklahoma, have turned to leasing school trust land to sustain and sometimes expand their operations. Changes in the land tenure process have undergone profound transformations in the last 20 years, greatly impacting land use in the region. Coupled with an almost decade-long drought, land managers pursuing seemingly “traditional” agricultural practices call upon increasingly complicated, mixed private and public tenure options in order to make ends meet. Using a political ecology framework, we examine conflicting relationships between school land, the state, and local land managers as well as the sustainability of cattle ranching on school trust land …

The Case For Excellence In Diversity: Lessons From An Assessment Of An Early Career Faculty Program, Dorothe J. Bach, Mary Deane Sorcinelli

To Improve the Academy: A Journal of Educational Development

Many colleges and universities have come to understand the added educational value of having a more diverse faculty, and some have created specific programs to enhance recruitment, development, and retention of underrepresented faculty. How do these programs help underrepresented faculty start a successful career? How can they help a diverse faculty build thriving, long-term careers in academia? This chapter addresses these questions by sharing the findings and lessons learned from an internal and external assessment of the Excellence in Diversity Fellows Program at the University of Virginia.

Determinants Of Net Migration In Montana, Evelyn D. Ravuri

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

The Great Plains has experienced population loss for most of the 20th century while the Rocky Mountain region has experienced rapid population growth in the past few decades. This paper examines net migration by county for Montana between 1995 and 2000 disaggregated by age and educational level. Montana was chosen because it straddles the Great Plains and Rocky Mountain regions and thus provides an opportunity to compare and contrast net migration and population change in two regions undergoing fundamentally different population processes. Regression analysis was applied to determine the predictor variables responsible for net migration between 1995 and 2000. Dependent …

A Soil Water Climatology For Kansas, Michael J. Keables, Shitij Mehta

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

Regional climate models suggest that summers in the Great Plains may become increasingly dry during this century, raising concern about the availability of water resources for irrigation and municipal water supplies. While the models predict drier conditions across the region, the impact of climate change on water availability at the local scale will depend largely upon the soils and their ability to store water during dry periods. This study presents a soil water climatology for Kansas using a climatic water balance approach. Monthly observations of temperature and precipitation for the period 1950–2006 are used to calculate climatologies of actual evapotranspiration, …

Gis Spatial Analysis Of University Of Nebraska At Kearney Alumni Cohorts, 1930–2004, Paul R. Burger, Brett R. Chloupek

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

The purpose of this study was to utilize Geographic Information Systems (GIS) technology and spatial analysis coupled with the University of Nebraska at Kearney (UNK) alumni data from 1930 to 2004 in order to compare and contrast the changing distribution patterns of five-year alumni cohorts. Mean centers, location quotients, and cluster analysis were used to assess the degree to which UNK alumni cohorts have migrated over the 75-year period, the extent to which any regionalization or lack thereof occurs, and the proportion of UNK alumni per county compared to college graduates as a whole. These spatial patterns were then compared …

Three Decades In The Cold And Wet: A Career In Northern Archaeology, Sophia Perdikaris, George Hambrecht, Ramona Harrison

School of Global Integrative Studies: Faculty Publications

Thomas H. McGovern has been a pioneering researcher in the North Atlantic region for most of the past 40 years. He has taken his specialty in zooarchaeology beyond counting bones to actually addressing questions about human environment interactions and human response to extreme environmental events. A prolific writer and researcher with a multitude of publications and an impressive funding record, McGovern has always been a proponent of multidisciplinarity and international collaboration. His vision resulted in the creation of the North Atlantic Biocultural Organization (NABO) that currently has more than 400 scientific partners and has been leading projects throughout the Circum …

Impact Of Revised And Potential Future Albedo Estimates On Ccsm3 Simulations Of Growing-Season Surface Temperature Fields For North America, Warren E. Heilman, David Y. Hollinger, Xiuping Li, Xindi Bian, Shiyuan Zhong

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Recently published albedo research has resulted in improved growing-season albedo estimates for forest and grassland vegetation. The impact of these improved estimates on the ability of climate models to simulate growing-season surface temperature patterns is unknown. We have developed a set of current-climate surface temperature scenarios for North America using the Community Climate System Model – Version 3 (CCSM3). Simulation results suggest that modifications to the default CCSM3 radiative parameters that are consistent with more recent accurate measurements of albedo values for grasslands and needle-leaf deciduous trees (NDTs) can reduce the overall growing-season surface temperature bias over North America in …

Review Of Notes From Texas: On Writing In The Lone Star State Edited By W. C. Jameson, Karl Germeck

Great Plains Quarterly (through 2013)

For Notes from Texas, W. C. Jameson compiles essay responses from esteemed veterans of the Texas writing community in an effort to understand how each came to choose a career in writing and succeeded in doing so, as well as the role Texas (its myths and lore, geography, history, and culture) has played in that process. The result is a collection of fourteen personal essays from eleven native, and three transplant, Texans, including such notables as former and co-founding director of the University of North Texas Press, Frances Brannen Vick, novelists Elmer Kelton, Paulette Jiles, James Reasoner, and poet/songwriter …

Enhanced Late Holocene Enso/Pdo Expression Along The Margins Of The Eastern North Pacific, John A. Barron, Lesleigh Anderson

United States Geological Survey: Staff Publications

Pacific climate is known to have varied during the Holocene, but spatial patterns remain poorly defined. This paper compiles terrestrial and marine proxy data from sites along the northeastern Pacific margins and proposes that they indicate 1) suppressed ENSO conditions during the middle Holocene between ~8000 and 4000 cal BP with a North Pacific that generally resembled a La Niña-like or more negative PDO phase and 2) a climate transition between ~4200 and 3000 cal BP that appears to be the teleconnected expression to a more modern-like ENSO Pacific. Compared to modern day conditions, the compiled data suggest that during …

Models Of Digital Documentation: The 19th-Century Concord Digital Archive, Amy E. Earhart

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

As with many digital archives, The 19th-Century Digital Concord Archive (CDA) started as a website utilizing simple technology and has evolved to a more technologically advanced scholarly site. The CDA joins an interdisciplinary team from the Department of English, Texas A&M University; the Digital Humanities Initiative, the College of Liberal Arts, Texas A&M University; the Map and GIS Collections and Services, Texas A&M University Libraries; and the Concord Free Public Library, Concord, Massachusetts, in the development of infrastructures that allow the entities to share metadata easily, develop innovative, visually-based search functions, and make visible and accessible the cultural record of …

The Ties That Bind: Soil Surveyor William Edgar Tharp And Oceanographic Cartographer Marie Tharp, Edward R. Landa

United States Geological Survey: Staff Publications

The link between soil science and geology is personified in the American father and daughter: soil surveyor William Edgar Tharp (1870–1959) and oceanographic cartographer Marie Tharp (1920–2006). From 1904 to 1935, W.E. Tharp mapped soils in 14 states for the US Department of Agriculture, and campaigned during the late 1920s–early 1930s to raise awareness of the high rates of soil erosion from croplands. The lifestyle of the federal soil surveyor in the United States during the early 20th century involved frequent household moves, and it played a formative role in Marie Tharp’s childhood. Her path to a career in geology …

History And Dating Of The Publication Of The Philadelphia (1822) And London (1823) Editions Of Edwin James’S Account Of An Expedition From Pittsburgh To The Rocky Mountains, Neal Woodman

United States Geological Survey: Staff Publications

The public record of Major Stephen H. Long’s 1819–1820 exploration of the American north-west, Account of an expedition from Pittsburgh to the Rocky Mountains, compiled by Edwin James, contains valuable contributions regarding the natural landscapes, native peoples and wildlife of a mostly unexplored region of the American west compiled from the notes of some of America’s foremost naturalists, and it includes the first descriptions of 67 new species. The original plan was to publish the Account in Philadelphia and London simultaneously, yet these two editions differ substantially in ways that are relevant to the taxonomic contributions in the work. …

Back To Nature: Ecological Genomics Of Loblolly Pine (Pinus Taeda, Pinaceae), Andrew J. Eckert, Andrew D. Bower, Santiago C. González-Martínez, Jill L. Wegrzyn, Graham Coop, David B. Neale

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Genetic variation is often arrayed in latitudinal or altitudinal clines, reflecting either adaptation along environmental gradients, migratory routes, or both. For forest trees, climate is one of the most important drivers of adaptive phenotypic traits. Correlations of single and multilocus genotypes with environmental gradients have been identified for a variety of forest trees. These correlations are interpreted normally as evidence of natural selection. Here, we use a genome-wide dataset of single nucleotide polymorphisms (SNPs) typed from 1730 loci in 682 loblolly pine (Pinus taeda L.) trees sampled from 54 local populations covering the full-range of the species to examine …

Muellerius Capillaris Dominates The Lungworm Community Of Bighorn Sheep At The National Bison Range, Montana, Vanessa O. Ezenwa, Alicia M. Hines, Elizabeth A. Archie, Eric P. Hoberg, Ingrid M. Asmundsson, John T. Hogg

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Lungworm infections are common among bighorn sheep (Ovis canadensis) in North America, and the predominant species reported are Protostrongylus stilesi and P. rushi. The only records of another lungworm species, Muellerius capillaris, infecting bighorns come from South Dakota, USA. At the National Bison Range (NBR), Montana, USA we found that across six sampling periods, 100% of wild bighorn sheep surveyed were passing first-stage dorsal-spined larvae (DSL) which appeared to be consistent with M. capillaris. By contrast, only 39%or fewer sheep were passing Protostrongylus larvae. Using molecular techniques, we positively identified the DSL from the NBR …

Response Of River‐Dominated Delta Channel Networks To Permanent Changes In River Discharge, Doug Edmonds, Rudy Slingerland, Jim Best, Dan Parsons, Norman D. Smith

Department of Earth and Atmospheric Sciences: Faculty Publications

Using numerical experiments, we investigate how river‐dominated delta channel networks are likely to respond to changes in river discharge predicted to occur over the next century as a result of environmental change. Our results show for a change in discharge up to 60% of the initial value, a decrease results in distributary abandonment in the delta, whereas an increase does not significantly affect the network. However, an increase in discharge beyond a threshold of 60% results in channel creation and an increase in the density of the distributary network. This behavior is predicted by an analysis of an individual bifurcation …

Response Of River‐Dominated Delta Channel Networks To Permanent Changes In River Discharge, Doug Edmonds, Rudy Slingerland, Jim Best, Dan Parsons, Norm Smith

Department of Earth and Atmospheric Sciences: Faculty Publications

Using numerical experiments, we investigate how river‐dominated delta channel networks are likely to respond to changes in river discharge predicted to occur over the next century as a result of environmental change. Our results show for a change in discharge up to 60% of the initial value, a decrease results in distributary abandonment in the delta, whereas an increase does not significantly affect the network. However, an increase in discharge beyond a threshold of 60% results in channel creation and an increase in the density of the distributary network. This behavior is predicted by an analysis of an individual bifurcation …

Synthesis Of Satellite (Modis), Aircraft (Icartt), And Surface (Improve, Epa‐Aqs, Aeronet) Aerosol Observations Over Eastern North America To Improve Modis Aerosol Retrievals And Constrain Surface Aerosol Concentrations And Sources, Easan Drury, Daniel J. Jacob, Robert J. D. Spurr, Jun Wang, Yohei Shinozuka, Bruce E. Anderson, Antony D. Clarke, Jack Dibb, Cameron Mcnaughton, Rodney Weber

Department of Earth and Atmospheric Sciences: Faculty Publications

We use an ensemble of satellite (MODIS), aircraft, and ground‐based aerosol observations during the ICARTT field campaign over eastern North America in summer 2004 to (1) examine the consistency between different aerosol measurements, (2) evaluate a new retrieval of aerosol optical depths (AODs) and inferred surface aerosol concentrations (PM_2.5) from the MODIS satellite instrument, and (3) apply this collective information to improve our understanding of aerosol sources. The GEOS‐Chem global chemical transport model (CTM) provides a transfer platform between the different data sets, allowing us to evaluate the consistency between different aerosol parameters observed at different times and …

Vaishno Devi, The Most Famous Goddess Shrine In The Siwāliks, Georgana Foster, Robert Stoddard

Geography Program: Faculty Publications

Vaishno Devi in Jammu has been designated as the "Elder Sister" among the six other Devi shrines in a fairly narrow belt of the Siwāliks between the Yumunii and Chenāb Rivers. During the last few decades Vaishno Devi has become especially important. Pilgrimage to the shrine has increased from 30,000 to almost 7 million since Independence, when the political geography of the region increased accessibility, both physically and perceptually. The growth in the number of visitors can be attributed also to a change in administration of the shrine and to the tremendous increase in religious tourism. Vaishno Devi is now …