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Estimating Rio Grande wild turkey densities in TexasLocke, Shawn Lee 02 June 2009 (has links)
Rio Grande wild turkeys (Meleagris gallopavo intermedia) are a highly mobile, wide ranging, and secretive species located throughout the arid regions of Texas. As a result of declines in turkey abundance within the Edwards Plateau and other areas, Texas Parks and Wildlife Department initiated a study to evaluate methods for estimating Rio Grande wild turkey abundance. Unbiased methods for determining wild turkey abundance have long been desired, and although several different methods have been examined few have been successful. The study objectives were to: (1) review current and past methods for estimating turkey abundance, (2) evaluate the use of portable thermal imagers to estimate roosting wild turkeys in three ecoregions, and (3) determine the effectiveness of distance sampling from the air and ground to estimate wild turkey densities in the Edwards Plateau Ecoregion of Texas. Based on the literature review and the decision matrix, I determined two methods for field evaluation (i.e., infrared camera for detecting roosting turkeys and distance sample from the air and ground). I conducted eight ground and aerial forward-looking infrared (FLIR) surveys (4 Edwards Plateau, 3 Rolling Plains, and 1 Gulf Prairies and Marshes) of roost sites during the study. In the three regions evaluated, I was unable to aerially detect roosting turkeys using the portable infrared camera due to altitudinal restrictions required for safe helicopter flight and lack of thermal contrast. A total of 560 km of aerial transects and 10 (800 km) road based transects also were conducted in the Edwards Plateau but neither method yielded a sufficient sample size to generate an unbiased estimate of the turkey abundance. Aerial and ground distance sampling and aerial FLIR surveys were limited by terrain and dense vegetation and a lack of thermal contrast, respectively. Study results suggest aerial FLIR and ground applications to estimate Rio Grande wild turkeys are of limited value in Texas. In my opinion, a method for estimating Rio Grande wild turkey densities on a regional scale does not currently exist. Therefore, the Texas Parks and Wildlife Department should reconsider estimating trends or using indices to monitor turkey numbers on a regional scale.
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Occurrence and impact of the Asian fish tapeworm Bothriocephalus acheilognathi in the Rio Grande (Río Bravo del Norte) /Bean, Megan G. January 1900 (has links)
Thesis (M.S.)--Texas State University-San Marcos, 2008. / Vita. Includes bibliographical references (leaves x,40-42). Also available on microfilm.
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Die Peuketia : Kultur und kulturkontakte in Mittelapulien vom 8. bis 5. Jahrhundert v. Chr. /Greiner, Claudia. January 2003 (has links)
Dissertation--Universität Freiburg (Breisgau), 1999. / Résumé en anglais et italien. Bibliogr. p. 217-232.
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A moral economics : classical political economy and cultural authority in nineteenth-century England /Klaver, Claudia C. January 1900 (has links)
Texte remanié de: Thesis Ph. D. / Bibliogr. p. 211-219. Index.
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Landscapes of imperialism : Roman and native interaction in the East Anglian Fenland /Fincham, Garrick. January 2003 (has links)
Texte remanié de: Doctoral thesis--University of Leicester. / Bibliogr. p. 307-315.
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Britain, Sweden and the Cold War, 1945-54 : understanding neutrality /Aunesluoma, Juhana. January 2003 (has links)
Doc. Th.--St. Anthony's College--Oxford, 1998. / Bibliogr. p. 196-204. Index.
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William Stukeley : science, religion and archaeology in eighteenth-century England /Haycock, David Boyd, January 2002 (has links)
Texte complété de: Thesis--London--Birkbeck college in the University of London, 1998. / Bibliogr. p. 263-284.
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Spanien im Kalkül der britischen Kriegspolitik 1914-1918 : die politische, wirtschaftliche und propagandistische Bedeutung eines neutralen Landes für Großbritannien im Ersten Weltkrieg /Zeiseler, Dirk. January 1900 (has links)
Texte remanié de: Diss.--Philosophische Fakultät I--Berlin--Humboldt-Universität. Titre de soutenance : Großbritannien und Spanien im Ersten Weltkrieg. Diplomatie, Wirtschaft, Propaganda - die Säulen der britischen Spanienpolitik. / Bibliogr. p. 299-321. Index.
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Kingship and crown finance under James VI and I, 1603-1625 /Cramsie, John, January 2002 (has links)
Texte remanié de: Th. Ph. D.--University of St Andrews. / Bibliogr. p. 219-235. Index.
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Geheime Diplomatie und öffentliche Meinung : die Parlamente in Frankreich, Deutschland und Großbritannien und die erste Marokkokrise 1904-1906 /Mayer, Martin, January 2002 (has links)
Diss.--Fachbereich Geschichtswissenschaft--Mainz--Johannes-Gutenberg-Universität, 2000. / Bibliogr. p. [335]-363. Index.
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