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Biodiversity of Dragonflies and Damselflies (Odonata) of the South-Central Nearctic and Adjacent Neotropical Biotic Provinces

Description: The south-central United States serves as an important biogeographical link and dispersal corridor between Nearctic and Neotropical elements of western hemisphere odonate faunas. Its species are reasonably well known because of substantial collections, but there has been no concerted effort to document the extent of biodiversity and possible geographic affinities of dragonflies and damselflies of this region. The recent discoveries of Argia leonorae Garrison, Gomphus gonzalezi Dunkle and Erpetogomphus heterodon Garrison from southern and western Texas and northern Mexico suggest that Odonata species remain to be discovered in this area, particularly from far south Texas and northern Mexico. I have documented a total of 12,515 records of Odonata found in 408 counties within the south-central U.S. A total of 73 species of damselflies and 160 species of dragonflies was revealed in the region. The 233 (197 in Texas) Odonata species are distributed among 10 families and 66 genera. Illustrated family, generic, and species-level keys are provided. Since the beginning of this work in the Fall of 1993, one species has been added each to the Louisiana and Oklahoma faunas, and 12 species have been added, previously unreported from Texas, including four new to the U.S. The area of highest Odonata biodiversity overall (161 spp.) is in the Austroriparian biotic province. The greatest degree of faunal similarity between the south-central U.S. and other intra-continental regions was observed for the eastern (64%) United States. Diversity is a function of area, and as expected, the numbers of breeding birds and Odonata, in each contiguous U.S. state are positively correlated (r=0.376, n=33, p=0.031). There is, however, no strong correlation between land area and species diversity within the region, but those natural biotic provinces (Austroriparian, Texan, Balconian) where aquatic systems and topographic heterogeneity are the greatest provide a broader spectrum of potential Odonata habitats and ...
Date: May 1999
Creator: Abbott, John C.

Megadrought and Megadeath in 16th Century Mexico

Description: The native population collapse in 16th century Mexico was a demographic catastrophe with one of the highest death rates in history. Recently developed tree-ring evidence has allowed the levels of precipitation to be reconstructed for north central Mexico, adding to the growing body of epidemiologic evidence and indicating that the 1545 and 1576 epidemics of cocoliztli (Nahuatl for "pest") were indigenous hemorrhagic fevers transmitted by rodent hosts and aggravated by extreme drought conditions.
Date: 2002
Creator: Acuna-Soto, Rodolfo; Stahle, David W.; Cleaveland, Malcolm K. & Therrell, Matthew D.
Item Type: Text

The Position of Texas in the Relations Between the United States and Mexico from 1876 to 1910

Description: "The purpose of this study was to show the position of Texas in the relations between the United States and Mexico from 1876 to 1910. With this thought in mind, the general problem has been to link the two countries through Texas. The Texas border relations between the United States and Mexico during this period were interesting because they showed the continued success of the efforts of the past years in building up better principles of settlement. " --leaf 129
Date: June 1942
Creator: Alexander, Gladys M.

State of the Climate in 2009

Description: This report describes observations of precipitation, temperature, and other climatology metrics from different global regions.
Date: June 2010
Creator: Andt, D. S.; Baringer, M. O.; Johnson, M. R.; Alexander, L. V.; Diamond, H. J.; Fogt, R. L. et al.
Item Type: Text

Cement and Artificial Stone Sculpture of Mexico

Description: The intention of this study is not to present the technique as a new one in the realm of sculpture, but rather to investigate the various ways in which cement is being employed in the sculptural form and to point out its prominent use as well as the reasons for its popularity in Mexico.
Date: June 1966
Creator: Bowling, Henry E.

Genic Differentiation and Evolution in the Ground Squirrel Subgenus Ictidomys (Spermophilus)

Description: The genetic structure of 26 natural populations of three species (S. tridecemlineatus, S. mexicanus, and S. spilosoma) of the Ictidomys subgenus of ground squirrels was analyzed using chromosomal and electrophoretic techniques. Chromosomal variation was not observed in S. mexicanus, and only slight karyotypic variation was found in the other two species. Chromosomal evidence indicated hybridization between S. tridecemlineatus and S. mexicanus, placing these species within the classical definition of semispecies. Analysis of electrophoretic variation at 29 genetic loci indicated close genetic relationships between these species. Evolution in Ictidomys appears to be linked with Pleistocene events, and speciation appears to have occurred within the last 155,000 years.
Date: December 1975
Creator: Cothran, E. Gus, 1951-

Analysis of Micro Enterprise Clusters in Developing Countries: A Case Study of Toluca, Mexico.

Description: Businesses cluster to achieve agglomeration benefits. However, research in developing countries suggests that the economic environment limits small business’ propensity to benefit from agglomerations. The study examines the location, networking patterns, formal structures and owner characteristics of 1256 micro businesses from ten industries and thirteen sample areas in Toluca, Mexico. First, the thesis analyses whether clustering has a positive impact on the success rates of the surveyed enterprises, e.g. higher sales per employee. On an industry scale only Retail benefits from agglomerations economies. However, results of the neighborhood data show that specific areas benefit from urbanization economies. Overall, the study finds that businesses located within agglomerations, have higher levels of formalization, networking and professional training, hence constituting a more sophisticated base for economic development. Conclusions can be drawn for development policies and programs, arguing for a more differentiated approach of small business development depending on business location and cluster characteristics.
Date: August 2011
Creator: Drauschke, Kristin

The Mexican Connection: Confederate and Union Diplomacy on the Rio Grande, 1861-1865

Description: This study examines the efforts of the Union and Confederate diplomatic agents to influence the events along the Rio Grande during the Civil War. The paper compares the successful accomplishments of Confederate agent Jose Quintero to the hindered maneuverings of the Union representatives, Leonard Pierce and M. M. Kimuey. Utilizing microfilmed sources from State Department records and Confederate despatches, the paper relates the steps Quintero took to secure the Confederate-Mexico border trade, obtain favorable responses from the various ruling parties in northern Mexico, and hamper the Union agents' attempts to quell the border trade.
Date: May 1978
Creator: Fielder, Bruce M.

Pottery and Tiles of Guanajuato, Mexico

Description: This paper is the result of a study made in Guanajuato, Mexico, in the summer of 1945. It is an attempt to set forth the development of the methods used in making pottery and tiles in this region -- to trace the methods, forms, and motifs from the pre-Conquest period through the Colonial and contemporary periods, to find what changes have come about in the art of making pottery and tiles, and to discover the causes of these changes.
Date: 1946
Creator: Fincher, Frances Merle

Music Theory in Mexico from 1776 To 1866: A Study of Four Treatises by Native Authors

Description: This investigation traces the history and development of music theory in Mexico from the date of the first Mexican treatise available (1776) to the early second half of the nineteenth century (1866). This period of ninety years represents an era of special importance in the development of music theory in Mexico. It was during this time that the old modal system was finally abandoned in favor of the new tonal system and that Mexican authors began to pen music treatises which could be favorably compared with the imported European treatises which were the only authoritative source of instruction for serious musicians in Mexico.
Date: August 1986
Creator: Flores, Carlos A. (Carlos Arturo)

Las Obras de Carlos Fuentes

Description: This thesis considers the novels of Carlos Fuentes from a thematic point of view, as well as looking at the place of the writer in Mexican narrative tradition. It also presents a brief history of the Mexican novel.
Date: January 1966
Creator: Garcia, Lino, Jr.

The Influence of Interorganizational Trust, Individualism and Collectivism, and Superordinate Goal of JIT/TQM on Interorganizational Cooperation: An Exploratory Analysis of Institutions in Mexico

Description: Since their introduction to the United States from Japan in the 1980s, inter-organizational cooperation practices between buyers and suppliers have provided lower costs, shorter development and production cycles, and higher levels of quality and productivity. Many studies of interorganizational cooperation have relied on transaction cost economicsframeworks,which ignore cultural differences. Few studies have analyzed inter-organizational cooperation in Mexico, a less-developed country (LDC) with a cultural and industrial environment differentfromthe U.S. This study is concerned with the influence of interorganizational trust, individualism and collectivism (indcol), and the superordinate goal ofjust-in-time/total quality management (JIT/TQM) on inter-organizational cooperation.
Date: December 1998
Creator: Glaser-Segura, Daniel A. (Daniel Armand)

How Practical Arts Education has Functioned in Mexico D. F.

Description: The aim of this study was to present a condensed and authentic report of what Mexico has done toward a practical education of the nation. It is also the aim of this study to show the development, the status, and the functioning of the Federal District. The study point out the relation and the needs of this type of education to the social and economic welfare and progress of the Mexican people.
Date: June 1938
Creator: Hamilton, Tom G.

Capability and cost assessment of the major forest nations to measure and monitor their forest carbon

Description: According to the Executive Summary, the aims and objective of this report are to provide an assessment of national capacity and capability in 25 tropical countries for measuring and monitoring forest as a requirement for reporting on REDD under IPCC guidelines. This paper was commissioned by the United Kingdom Office of Climate Change as background work to its report 'Climate Change: Financing Global Forests' (the Eliasch Review).
Date: April 7, 2008
Creator: Harcastle, P. D.; Baird, David & Harden, Virginia
Item Type: Text

Distribution of a Novel Gram Negative, Capsule-Forming Bacterium

Description: A novel Gram negative, capsule-forming bacterium was previously isolated in Dr. G. Roland Vela's laboratory. The distribution of this bacterium in soils from various locations was investigated. Soil samples from 188 locations around the world were examined. Isolates of the bacterium were obtained from 50 of these soils, with 48 of the isolates found in soils from the southwestern United States and northern Mexico. This suggests that this region is the natural habitat of the bacterium. The other two isolates were obtained from Madrid, Spain and Taipei, Taiwan. None were found in soils from South America or Australia. A lack of variation in morphology and physiological properties in the isolates suggests that a homogeneous population exists, even from widespread geographical locations.
Date: December 1997
Creator: Hughes, Roxana Bejarano

Calles, the Church, and the Constitution: Relations between the Roman Catholic Church and the Mexican State, 1924-1929

Description: From 1924 to 1929 the Roman Catholic Church and the Mexican State engaged in the crucial stage of a long-time struggle to determine whether the former would be independent of or subordinate to the latter. This thesis analyzes Church-State relations during this five year period and stresses the activities of President Plutarco ElĂ­as Calles, the Roman Catholic hierarchy, and more fanatic Mexican Catholics.
Date: December 1971
Creator: Joseph, Harriett Denise