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Estimating The Latitudinal Origins Of Migratory Birds Using Hydrogen And Sulfur Stable Isotopes In Feathers: Influence Of Marine Prey Base, Casey A. Lott, Timothy D. Meehan, Julie A. Heath

Julie Heath

Hydrogen stable isotope analysis of feathers is an important tool for estimating the natal or breeding latitudes of nearctic-neotropical migratory birds. This method is based on the latitudinal variation of hydrogen stable isotope ratios in precipitation in North America (iDp) and the inheritance of this variation in newly formed feathers (iDf). We hypothesized that the typically strong relationship between iDp and iDf would be decoupled in birds that forage in marine food webs because marine waters have relatively high iD values compared to iD values for local precipitation. Birds that forage on marine prey bases should also have feathers with …

Latter-Day Saint Scandinavian Migration Through Hull, England, 1852-1894, Fred E. Woods, Nicholas J. Evans

BYU Studies Quarterly

Nearly one hundred thousand Latter-day Saints made the journey across the Atlantic during the nineteenth century. Both contemporary commentators and Mormon historians alike have described these ocean crossings extensively. Yet the journey from Liverpool to America was but one segment in the much longer gathering process for over twenty-four thousand Scandinavian Mormons who migrated to Utah during this period. Scandinavians represented the second-largest ethnic group of Saints gathering to Zion between 1852 and 1894. During these years, nearly two hundred vessels carrying Latter-day Saints (fig. 1) left Scandinavia bound for Hull, an important port on the east coast of England. …

A Longitudinal Approach To Great Plains Migration, John C. Hudson

Great Plains Quarterly

Students of population and regional studies are familiar with the demographic "accounting" equation,

Population _t+x = Population _t + Births _x

-Deaths _x + Immigration _x

- Emigration _x

In other words, the size of the population at time t + x is equal to the population at time t plus the births, minus the deaths, plus the immigrants, minus the emigrants, during the interval of time x. This simple formula can be used to derive a variety of rates and statistics describing population change. The equation's main application is to describe short-term change in a population in terms …

Drawn By The Bison Late Prehistoric Native Migration Into The Central Plains, Lauren W. Ritterbush

Great Plains Quarterly

Popular images of the Great Plains frequently portray horse-mounted Indians engaged in dramatic bison hunts. The importance of these hunts is emphasized by the oft-mentioned dependence of the Plains Indians on bison. This animal served as a source of not only food but also materials for shelter, clothing, containers, and many other necessities of life. Pursuit of the vast bison herds (combined with the needs of the Indians' horses for pasturage) affected human patterns of subsistence, mobility, and settlement. The Lakota and Cheyenne, for instance, are described as relying heavily on bison meat for food and living a nomadic lifestyle …

New Light On The Cultures Of South Carolina's Distant Past - 2002, South Carolina Institute Of Archaeology And Anthropology--University Of South Carolina

Archaeology Month Posters

This poster was released in conjunction with South Carolina Archaeology Month, September 12-October 12, 2002.

An Application Of Queuing Theory To Waterfowl Migration, Richard S. Sojda, John E. Cornely, Leigh H. Fredrickson

International Congress on Environmental Modelling and Software

There has always been great interest in the migration of waterfowl and other birds. We have applied queuing theory to modelling waterfowl migration, beginning with a prototype system for the Rocky Mountain Population of trumpeter swans (Cygnus buccinator) in Western North America. The queuing model can be classified as a D/BB/28 system, and we describe the input sources, service mechanism, and network configuration of queues and servers. The intrinsic nature of queuing theory is to represent the spatial and temporal characteristics of entities and how they move, are placed in queues, and are serviced. The service mechanism in our system …

Low Concentration Microenvironments Enhance The Migration Of Neonatal Cells Of Glial Lineage, Richard A. Able, Jr., Celestin Ngnabeuye, Cade Beck, Eric C. Holland, Maribel Vazquez

Publications and Research

Glial tumors have demonstrated abilities to sustain growth via recruitment of glial progenitor cells (GPCs), which is believed to be driven by chemotactic cues. Previous studies have illustrated that mouse GPCs of different genetic backgrounds are able to replicate the dispersion pattern seen in the human disease. How GPCs with genetic backgrounds transformed by tumor paracrine signaling respond to extracellular cues via migration is largely unexplored, and remains a limiting factor in utilizing GPCs as therapeutic targets. In this study, we utilized a microfluidic device to examine the chemotaxis of three genetically-altered mouse GPC populations towards tumor conditioned media, as …

The Impact Of Migration On Sudanese Labor Migrants And The Problems Of Integration Of Their Families In The Society Of The United Arab Emirates, Sarra El Tayeb El Harith

Archived Theses and Dissertations

This study analyzes the social effects of migration on Sudanese labor migrants 􀀉11d their families both in the host and the home country. This study also examines the problems concerning integration (social, economic and political) and citizenship of Sudanese labor migrants and their families in the society of the United Arab Emirates. This work is the result of a fieldwork that I conducted among Sudanese labor migrants in the UAE. The method used for collecting the data is qualitative. I conducted in-depth interviews with twenty-five Sudanese persons working in the UAE. I either visited the respondents in their own houses …

Factors Affecting The Harvest Vulnerability Of Trumpeter Swans, Heidi L. Tangermann

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Two species of swan are regularly found in Utah, tundra swans (Cygnus columbianus) and trumpeter swans (Cygnus buccinator). Tundra swans migrate through Utah. During the fall migration period they are hunted in the state under guidelines established by the United States Fish and Wildlife Service (USFWS). Trumpeter swans are occasional visitors to Utah during the same migration period. Because trumpeter swans are difficult to distinguish from tundra swans in flight, they 11 are at risk of being harvested during the swan hunt. In my thesis, I examine the factors that may influence trumpeter swan vulnerability to …

2002-02 Adaptation, Internalization And Environmental Damage, Lisandro Abrego, John Whalley

Department of Economics Research Reports

No abstract provided.

Migration, Music And Social Relations On The Nsw Far North Coast, Christopher Gibson

Faculty of Social Sciences - Papers (Archive)

This article explores urban-rural migration on the NSW Far North Coast (the ‘Northern Rivers’ region) and the emergence of popular music as a niche cultural industry. The various images of the NSW Far North Coast as a ‘lifestyle’ region, ‘alternative’ region and coastal retreat have attracted a diverse mix of exurban professionals, unemployed persons, youth subcultures and retirees, yet despite population growth, the region continues to suffer unemployment rates among the highest in Australia. Against this backdrop, popular music has emerged as a niche industry with linkages to cultural production in Sydney, Melbourne and overseas, and also an area of …

Fossils On The Prairie.Pdf, Chris Laingen

Faculty Research and Creative Activity

Between 1935 and 1992, the number of farms in the United States decreased from approximately seven million to fewer than two million. This change left a noticeable imprint on the landscape. Working farmsteads have been reduced to idle, desolate buildings, or in some cases there are no buildings left at all. To study this transformation, black and white air photographs from 1950 were compared with 1990 air photographs. Also, plat books and ground checks in four townships in Watonwan County in southwestern Minnesota helped document changes. Farmsteads were abandoned or demolished because people began to find they could not economically …

Analyzing The Success Of The Usaid-Funded Empleando Futuros And Crime And Violence Prevention Projects In Reducing Emigration From The Northern Triangle To The United States, Sofia M. Munoz

Scripps Senior Theses

This paper explores the role of USAID-funded projects focused on the root causes of migration in the Northern Triangle as a U.S. immigration prevention strategy. Through analyzing the Empleando Futuros activity in Honduras and the Crime and Violence Prevention Project in El Salvador, I found that the projects followed an overly simplistic approach to migration based off of neoclassical economic theories of migration. When compared to alternate migration theories and empirical evidence from the region, I found that the individualistic and employment-based approaches utilized by these projects do not have the desired effect of majorly decreasing someone’s propensity to migrate …

Contract Rights And Civil Rights, Davison M. Douglas

Michigan Law Review

Have African Americans fared better under a scheme of freedom of contract or of government regulation of private employment relationships? Have court decisions striking down regulation of employment contracts on liberty of contract grounds aided black interests? Many contemporary observers, although with some notable dissenters, would respond that government regulation of freedom of contract, particularly the antidiscrimination provisions of Title VII of the Civil Rights Act of 1964, has benefited African Americans because it has restrained discriminatory conduct by private employers. Professor David E. Bernstein challenges the view that abrogation of freedom of contract has consistently benefited African Americans by …

Nutrient Reserves Of Lesser Scaup During Spring Migration In The Mississippi Flyway: A Test Of The Spring Condition Hypothesis, Michael J. Anteau

LSU Master's Theses

The continental scaup population (lesser [Aythya affinis] and greater scaup [A. marila] combined) has declined markedly during the past 20 years, and has remained below the population goal of the North American Waterfowl Management Plan since 1985. One hypothesis explaining the scaup population decline states that reproductive success has decreased because females presently are arriving on breeding areas in poorer condition than that historically (Spring Condition Hypothesis [SCH]). I tested the SCH by comparing fresh body masses (FBMs) and nutrient reserves (lipid, protein, and mineral) of lesser scaup at 4 locations (Louisiana, Illinois, Minnesota, and Manitoba) in the Mississippi Flyway …

Who Should Watch Over Refugee Law?, James C. Hathaway

Articles

We simply cannot afford to sell out the future of refugee protection in a hasty bid to establish something that looks, more or less, like an oversight mechanism for the Refugee Convention.

Who Should Watch Over Refugee Law?, James C. Hathaway

Articles

We simply cannot afford to sell out the future of refugee protection in a hasty bid to establish something that looks, more or less, like an oversight mechanism for the Refugee Convention.