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Dissertations / Theses on the topic 'Turtle populations'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2024

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1

Beaudry, Frédéric. "Road Mortality Risk for Spotted and Blanding's Turtle Populations." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/BeaudryF2007.pdf.

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2

Saumure, Raymond A. "Growth, mutilation, and age structure of two populations of wood turtles, Clemmys insculpta, in southern Québec." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq29779.pdf.

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3

Marx, Melanie [Verfasser]. "Population connectivity of European Turtle Doves (Streptopelia turtur) : threats affecting European populations and modelling of species-habitat relationships at German breeding grounds / Melanie Marx." Gießen : Universitätsbibliothek, 2019. http://d-nb.info/1180979249/34.

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4

Wright, Lucy Isabel. "Insights into the mating systems of green turtle populations from molecular parentage analyses." Thesis, University of Exeter, 2012. http://hdl.handle.net/10036/3695.

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Gaining a good understanding of marine turtle mating systems is fundamental for their effective conservation, yet there are distinct gaps in our knowledge of their breeding ecology and life history, owing largely to the difficulty in observing these highly mobile animals at sea. Whilst multiple mating by females, or polyandry, has been documented in all marine turtle species, the fitness consequences of this behaviour have not been fully investigated. Furthermore, male mating patterns, operational sex ratios and the number of males contributing to breeding populations are poorly understood, im

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5

Trembath, Dane F., and n/a. "The comparative ecology of Krefft's River Turtle Eydura krefftii in Tropical North Queensland." University of Canberra. Resource, Environmental & Heritage Sciences, 2005. http://erl.canberra.edu.au./public/adt-AUC20060711.113815.

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An ecological study was undertaken on four populations of Krefft�s River Turtle Emydura krefftii inhabiting the Townsville Area of Tropical North Queensland. Two sites were located in the Ross River, which runs through the urban areas of Townsville, and two sites were in rural areas at Alligator Creek and Stuart Creek (known as the Townsville Creeks). Earlier studies of the populations in Ross River had determined that the turtles existed at an exceptionally high density, that is, they were superabundant, and so the Townsville Creek sites were chosen as low abundance sites for comparison. The

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6

Trocini, Sabrina. "Health assessment and hatching success of two Western Australian loggerhead turtle (Caretta caretta) populations." Thesis, Trocini, Sabrina (2013) Health assessment and hatching success of two Western Australian loggerhead turtle (Caretta caretta) populations. PhD thesis, Murdoch University, 2013. https://researchrepository.murdoch.edu.au/id/eprint/18114/.

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Most of the existing sea turtle populations worldwide are in decline, and loggerhead turtles (Caretta caretta), in particular, are listed as Endangered. The loggerhead nesting population in Western Australia is the largest nesting population in Australia and one of the largest in the Indian Ocean and the world. This research project investigated hatching success and health, two critical aspects for loggerhead turtle conservation and management, on two important nesting sites in Western Australia: Turtle Bay on Dirk Hartog Island and Bungelup Beach in Cape Range National Park. This project

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7

Hatase, Hideo. "Studies on migration, dynamics, and genetic variation in Japanese loggerhead turtle (Caretta caretta) nesting populations." Kyoto University, 2002. http://hdl.handle.net/2433/149503.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第9778号<br>農博第1290号<br>新制||農||852(附属図書館)<br>学位論文||H14||N3709(農学部図書室)<br>UT51-2002-M156<br>京都大学大学院農学研究科応用生物科学専攻<br>(主査)教授坂本亘, 教授田中克, 教授林勇夫<br>学位規則第4条第1項該当

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8

Belleau, Pascale. "Habitat selection, movement patterns, and demography of common musk turtles (Sternotherus odoratus) in southwestern Québec." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=112379.

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I studied the common musk turtle (Sternotherus odoratus) at the northern limit of its range at Norway Bay, Quebec, from April to October 2006. Common musk turtles are habitat specialists and are selective of their habitats at the study-area and home-range scales. Beaver ( Castor canadensis) lodges were preferred at the study-area scale. Common musk turtles also preferred beaver lodges, emergent wetlands, aquatic beds with floating and submerged vegetation as well as rocky shores at the home-range scale. At the location scale, common musk turtles chose shallower and cooler sites that contained

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9

Salvarani, Patricia Ishisaki. "Impact of contaminants in natural populations of marine turtles (Campeche, Mexico)." Doctoral thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/23764.

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Doutoramento em Biologia<br>As tartarugas marinhas sofrem um forte impacto populacional devido às atividades antropogênicas, como as causadas pelo aumento da exploração comercial e industrial nas áreas costeiras, alteração do habitat, ingestão de resíduos sólidos, captura acidental nas atividades pesqueiras e a contaminação de poluentes químicos. Das sete espécies de tartarugas marinhas existentes distribuídas por quase todos os oceanos (Caretta caretta, Chelonia mydas, Dermochelys coriacea, Eretmochelys imbricata, Lepidochelys olivacea, Natator depressus e Lepidochelys kempii), exceto

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10

Hagood, Susan. "Genetic differentiation of selected Eastern box turtle (Terrapene carolina) populations in fragmented habitats, and a comparison of road-based mortality rates to population size." College Park, Md. : University of Maryland, 2009. http://hdl.handle.net/1903/9995.

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Thesis (Ph.D.) -- University of Maryland, College Park, 2009.<br>Thesis research directed by: Marine, Estuarine, Environmental Sciences Graduate Program. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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11

Portelinha, Thiago Costa Gonçalves. "Estrutura populacional e alometria reprodutiva de Podocnemis expansa (Testudines, Podocnemididae) no entorno do Parque Nacional do Araguaia, Tocantins." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/91/91131/tde-21062010-081308/.

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Dentre os répteis que ocorrem na Amazônia, os quelônios se destacam pela sua diversidade e importância econômica. Podocnemis expansa, conhecida popularmente como tartaruga-da-amazônia, é considerada o maior quelônio de água doce da América do Sul e tem sido explorada intensamente, por séculos, por inúmeras comunidades indígenas e ribeirinhas. O presente estudo teve como objetivo ampliar os conhecimentos acerca da ecologia populacional e da biologia reprodutiva de P. expansa no rio Javaés, Estado do Tocantins, no entorno do Parque Nacional do Araguaia (Ilha do Bananal). No primeiro capítulo des

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12

Le, Gal Anne-Sophie. "Réponses individuelles et démographiques de l'Emyde lépreuse (Mauremys leprosa) aux perturbations environnementales." Electronic Thesis or Diss., Perpignan, 2023. http://www.theses.fr/2023PERP0046.

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Les derniers rapports du Groupe d'experts intergouvernemental sur l'évolution du climat (GIEC) et de la Plateforme intergouvernementale scientifique et politique sur la biodiversité et les services écosystémiques (IPBES) alertent sur le déclin mondial de la biodiversité. Ce déclin est directement lié aux activités anthropiques, et en particulier à la destruction et aux pollutions des environnements terrestres et aquatiques. Les zones humides font partie des écosystèmes les plus menacés, avec une perte de 35% de leurs surfaces observée depuis 1970, et plus d'un quart des espèces résidentes mena

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13

Griffin, Kathleen Ann Pletscher Daniel H. "Spatial population dynamics of western painted turtles in a wetland ecosystem in northwestern Montana." CONNECT TO THIS TITLE ONLINE, 2007. http://etd.lib.umt.edu/theses/available/etd-05272008-135912/.

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Thesis (Ph. D.)--University of Montana, 2007.<br>Title from title screen. Description based on contents viewed Aug. 14, 2008. Includes 2 appendices: Potential effects of highway mortality and habitat fragmentation on a population of painted turtles in Montana, and Fencing methods and efficacy for minimizing turtle road kill and directing turtles to crossing structures, both by Kathy Griffin and Daniel H. Pletscher. Includes bibliographical references.

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14

Tomillo, Maria del Pilar Santidrián Spotila James R. "Factors affecting population dynamics of eastern pacific leatherback turtles (Dermochelys coriacea) /." Philadelphia, Pa. : Drexel University, 2007. http://hdl.handle.net/1860/2523.

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15

Bourjea, Jérôme. "Structure et connectivité de la mégafaune marine à l'échelle d’une région océanique : enjeux pour la gestion durable des tortues vertes dans l'océan Indien occidental." Thesis, La Réunion, 2014. http://www.theses.fr/2014LARE0015/document.

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Ce travail de thèse s'insère dans une démarche globale d'acquisition des connaissances sur la tortue verte (Chelonia mydas) dans l'océan Indien occidental et ce afin de disposer d'éléments scientifiques essentiels à la mise en place d'une gestion cohérente et efficace de cette espèce menacée. Dans un premier temps, appliquant différentes modèles statistiques, ce travail a visé à établir des données de référence sur l'abondance des tortues vertes femelles en reproduction et les tendances sur le long terme des principales populations. Dans un second temps, il a consisté à déterminer la structure

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16

Beau, Frédéric. "Ecologie de la Cistude d'Europe "Emys orbicularis" en Brenne : histoire de vie des nouveau-nés et influence des modes de gestion sur les populations." Thesis, La Rochelle, 2019. http://www.theses.fr/2019LAROS024.

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La Brenne est une région qui abrite aujourd’hui une biodiversité remarquable et de nombreuses espèces emblématiques des zones humides, parmi lesquelles la Cistude d’Europe Emys orbicularis occupe une place particulière. Cette espèce a été largement favorisée par les activités humaines passées. Les étangs, tous artificiels, ont vu s’installer et se développer depuis le Moyen Âge une des plus importantes populations de France. Cette espèce, dont la répartition française fut plus large, a subi d’importantes réductions essentiellement en raison des modifications des pratiques agricoles et l’utilis

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17

Stringell, Thomas Brian. "Population dynamics of marine turtles under harvest." Thesis, University of Exeter, 2013. http://hdl.handle.net/10871/14521.

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Understanding the ecology and life history of marine turtle populations is fundamental for their effective conservation, especially for those that are harvested for food. This thesis presents a collection of six chapters that progress from the applied to the pure; conservation and management in the first chapters through to animal ecology in the latter. A variety of contemporary and multidisciplinary techniques are utilised to explore the structure, populations dynamics and ecology of two marine turtle species, the green turtle (Chelonia mydas) and the hawksbill turtle (Eretmochelys imbricata)

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18

Cuttriss, Andrew K. "Sea Turtle Ecology in the Gold Coast Region, Australia: Habitat Use, Nesting Behaviour and Movement Patterns." Thesis, Griffith University, 2014. http://hdl.handle.net/10072/365239.

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Habitat destruction and human exploitation has caused major declines in global sea turtle populations, resulting in six out of the seven species of sea turtles being classified as endangered or critically endangered by the International Union for the Conservation of Nature (IUCN). Extensive research has been undertaken on sea turtle nesting, breeding structure and abundance, migration and threats. However, little detailed information is available within the literature on sea turtle nesting behaviour, movement patterns and habitat usage within southern peripheral habitat limits of eastern Austr

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19

Campbell, Cathi Lynn. "Population assessment and management needs of a green turtle, Chelonia mydas, population in the western Caribbean." [Gainesville, Fla.]: University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0000657.

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20

Edmonds, Jonathan H. "Population ecology of the stinkpot turtle (Sternotherus odoratus) in Georgian Bay, Ontario." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ35884.pdf.

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21

Hedges, Melissa Elizabeth. "Development and application of a multistate model to the northern subpopulation of loggerhead sea turtles." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/32185.

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Loggerhead sea turtles (Caretta caretta) are listed as threatened under the Endangered Species Act and are protected both on nesting beaches and in United States waters. Loggerhead sea turtles are long-lived species and are most easily studied on the beaches during the nesting season. Bald Head Island, North Carolina has one of the highest density nesting beaches of loggerhead sea turtles in the turtleâ s northern range on the East Coast of the United States. Key life history parameters were estimated and applied to a population model using 16 years of data from a mark-recapture study on t

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22

Breisch, Ariana N. "The natural history and thermal ecology of a population of spotted turtles (Clemmys guttata) and wood turtles (Glyptemys insculpta) in West Virginia." Huntington, WV : [Marshall University Libraries], 2006. http://www.marshall.edu/etd/descript.asp?ref=623.

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Theses (M.S.)--Marshall University, 2006.<br>Title from document title page. Includes abstract. Document formatted into pages: contains xi, 319 p. including illustrations and maps. Bibliography: p. 228-234.

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23

Tortorelli, Brian Alfred. "Turtle Cam: Live Multimedia Interaction For Engaging Potential Visitor Population To Canaveral National Seashore." Master's thesis, University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5534.

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This project expands the outreach of the Canaveral National Seashore to its visitors, potential visitors, and virtual visitors through its goals in conservancy and preservation of its natural resources. This paper is involved with the current iteration of a series of digital media projects, the Sea Turtle Nest Camera, also known as, Turtle Cam. It details how and why this project was designed to be an ongoing initiative to assist in those goals.<br>ID: 031001480; System requirements: World Wide Web browser and PDF reader.; Mode of access: World Wide Web.; Advisers: Cheryl Cabrera, Robb Lindgre

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24

Banger, Nicola A. "Consequences of Multiple Paternity for Female Fitness in an Ontario Population of Northern Map Turtles, 'Graptemys geographica'." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/22881.

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Although sexual stereotypes paint males as being promiscuous and females as being choosy in order to increase their reproductive success, multiple mating by females is widespread and females of many taxa often produce progeny sired by multiple males – but why? In species in which there are no direct benefits associated with mating, females may adopt promiscuous mating strategies to increase their fitness through the acquisition of genetic benefits. Here, I examine the genetic mating system of map turtles, Graptemys geographica in Lake Opinicon. Based on the most conservative estimate, at least

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25

Nielsen, Janne Thoft. "Population Structure and the Mating System of Loggerhead Turtles (Caretta caretta)." Scholarly Repository, 2010. http://scholarlyrepository.miami.edu/oa_dissertations/507.

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Studies of the maternally inherited mitochondrial DNA in loggerhead sea turtles (Caretta caretta) demonstrate that females are philopatric, returning to nest in the region where they hatched. Eleven genetic stocks of maternal lineages have been identified in the Atlantic Ocean. An analysis of the conventionally-used 380 bp of the mitochondrial control region of a sample of individuals from the genetic stock of loggerheads in Mexico (N = 175) revealed 13 haplotypes. When a longer sequence read of 815 bp was analyzed, 17 haplotypes were uncovered. In the genetic stock of loggerheads in nort

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26

Dillard, Kristin C. "A comparative analysis of geometric morphometrics across two Pseudemys turtle species in east central Virginia." VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/4917.

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The phylogeny of the turtle genus Pseudemys is poorly understood. In Virginia, many turtles have been found with indicator traits of both eastern river cooters (Pseudemys concinna concinna) and northern red bellied cooters (Pseudemys rubriventris). This study explores morphological evidence for hybridization between the two species across three riverine sites in east central Virginia. Museum voucher groups for each species were analyzed for relative shell height and plastron length. The shape of the plastral scutes and upper jaw were analyzed using landmark-based morphometric software. These m

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27

Holden, Michael Thomas. "Assessing Changes in Bog Turtle (Glyptemys muhlenbergii) Population Abundance and Factors Influencing Nest Predation in Virginia." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/103775.

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Across the globe, wildlife populations are facing increasing challenges, with many taxonomic groups significantly declining. Among endangered vertebrates (including birds, non-avian reptiles, fishes, mammals, and amphibians), turtles are one of the most threatened groups with over 60% of the 356 recognized species classified as threatened or worse. Bog turtles (Glyptemys muhlenbergii), are among the most imperiled of North American freshwater turtles. These small, secretive turtles have declined by up to 90% in parts of their range, which consists of the Northern Population and the Southern Po

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28

Baggiano, Olivier. "The Murray - Darling Turtles: Gene Flow and Population Persistance in Dryland Rivers." Thesis, Griffith University, 2012. http://hdl.handle.net/10072/367471.

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Australia’s largest and most important waterway- the Murray-Darling Basin (MDB) - is under threat owing to predicted increases in temperature extremes and reduction in rainfall - runoff in the coming decades. Management strategies are required that incorporate an understanding of dispersal patterns of the MDB fauna and flora. Patterns of dispersal have typically been studied through direct organismal studies but genetic approaches, in which the movement of genes in the landscape is used as a correlate of species dispersal, can provide a more comprehensive view by investigating at a much larger

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29

Tiwari, Manjula. "Density-dependent effects on hatchling production in the green turtle nesting population in Tortuguero, Costa Rica." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0005620.

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30

Stephens, Sarah Holland. "Genetic analysis of the Kemp's ridley sea turtle (Lepidochelys kempii) and estimates of effective population size." Texas A&M University, 2003. http://hdl.handle.net/1969/220.

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31

Whitman, Elizabeth Rose. "Factors Affecting Green Turtle Foraging Ecology Across Multiple Spatial Scales." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3870.

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The hierarchical levels at which resource selection occurs can have important consequences for individual and population energy budgets and structure the impacts of a forager on its ecosystem. Assessing factors affecting resource selection of large marine herbivores across scales is important because of their potentially large impacts on seagrass community dynamics and historical and current changes in their population sizes and those of their potential predators. I explored the factors (predation risk, resource abundance, quality and identity) affecting resource use of large marine herbivores

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32

Phillips, Katrina. "Beyond the Beach: Population Trends and Foraging Site Selection of a Florida Loggerhead Nesting Assemblage." Scholarly Repository, 2011. http://scholarlyrepository.miami.edu/oa_theses/245.

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A twenty year mark-recapture dataset from the loggerhead nesting beach on Keewaydin Island, off the southwest coast of Florida, was analyzed using a two-state open robust design model in Program MARK to provide insight into recent nesting declines in the state. A total of 2,292 encounters representing 841 individual tag IDs were used for this analysis. Survival was estimated at 0.73 (95% CI 0.69-0.76), and there was no evidence from remigration rate or clutch frequency to suggest the composition of the nesting assemblage had changed over time. The mark-recapture analysis was supplemented with

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33

Douglas, Donna Nabeha Carleton University Dissertation Chemistry. "Anoxia induces changes in translatable mRNA populations in Trachemys scripta elegans: a possible adaptive strategy for anoxia tolerance." Ottawa, 1993.

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34

Standing, Katherine Lorraine. "Reproduction, nest site selection, and neonatal behaviour in a northern peripheral population of Blanding's turtle, Emydoidea blandingii." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq23702.pdf.

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35

Stokes, Kimberley Laura. "Ecology of marine turtles under climate change." Thesis, University of Exeter, 2014. http://hdl.handle.net/10871/21847.

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Climate change threatens to disrupt biological systems around the globe, sparking debate over natural capacity for adaptation in a fragmented landscape. Marine turtles are evolutionarily ancient and have survived millions of years of prehistoric climate change, but are threatened by the rapidity of modern warming and a history of severe overexploitation that has left most populations depleted. This thesis explores a nesting aggregation of the green turtle (Chelonia mydas) in northern Cyprus, where a longitudinal programme of both intensive and extensive monitoring enables insight into individu

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Barbanti, Anna. "Sea turtle conservation: genetics and genomics for a better management." Doctoral thesis, Universitat de Barcelona, 2021. http://hdl.handle.net/10803/672159.

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Conservation actions aim to preserve and recover animal and plant species using in-situ or ex- situ strategies. The first, aims to protect and sustain populations in their natural habitat, the second are implemented when local populations are extinct or are about to be. Conservation genetics can provide important insights into the dynamics of endangered populations facilitating their management. This thesis uses traditional markers and new generation sequencing to improve conservation management of the loggerhead (Caretta caretta) and the green turtle (Chelonia mydas). In the first 2 chapters

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Bradshaw, Philip James. "Investigating variation in the life-history strategy of marine turtles." Thesis, University of Exeter, 2017. http://hdl.handle.net/10871/28998.

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Understanding the degree of connectivity among populations, forming migratory links and evaluating factors that influence reproductive fitness is fundamental for the successful management of migratory species of conservation concern. In this thesis I focus on a regionally important rookery of green turtles (Chelonia mydas) at Alagadi beach in northern Cyprus that has been intensively studied since 1992. I employ high resolution genetic markers with different modes of inheritance to reveal fine scale population structuring among four rookeries within a 200 km stretch of shoreline. The relative

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Harms, Hillary Morgan. "Conservation of the Spotted Turtle (Clemmys guttata): Identifying Critical Demographic and Environmental Constraints Affecting Viability." Bowling Green State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1213634295.

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Seney, Erin Elizabeth. "Population dynamics and movements of the Kemp's ridley sea turtle, lepidochelys kempii, in the northwestern Gulf of Mexico." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2375.

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King, Cheryl S. "An Assessment of Sea Turtle Relative Abundance, Distribution, Habitat, and Population Characteristics Within the Kaho'olawe Island Reserve, Hawai'i." NSUWorks, 2007. http://nsuworks.nova.edu/occ_stuetd/113.

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e sea turtle population utilizing habitats within the Kaho‘olawe Island Reserve (KIR) has gone practically unstudied. This baseline assessment (2002-2005) used a combination of aerial and in-water research methodologies designed in conjunction with recording all incidental sightings and opportunistic reports. In addition, cultural insight, previous studies, literature, and other references were reviewed totaling 708 sightings that provided the subsequent information on the occurrence of turtles within the reserve. Overall, the different research assessment techniques produced similar results,

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Schwartz, Tonia S. "Population Structure of the Gopher Tortise (Gopherus polyphemus) in Florida, using Microsatellites." Scholar Commons, 2003. https://scholarcommons.usf.edu/etd/1471.

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Gopher tortoise (Gopherus polyphemus) population sizes have drastically declined in the past 100 years. Much of this decline has been attributed to past human predation, to habitat loss from human development, and potentially to the recently discovered upper respiratory tract disease. An understanding of the genetic structure among populations is critical for the long-term success of relocation and other management strategies. This research focuses on the development of a suite of genetic markers and the answers they provided to questions concerning present day population genetics and its use

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Spencer, Ricky-John. "The Murray River Turtle, Emydura macquarii: Population Dynamics, Nesting Ecology and Impact of the Introduced Red Fox, Vulpes vulpes." University of Sydney. Biological Sciences, 2001. http://hdl.handle.net/2123/373.

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I studied aspects of the ecology of the Murray River turtle, Emydura macquarii, to determine the impact of the introduced red fox, Vulpes vulpes. The fox is one of Australia's worst vertebrate pests through its predation on livestock and native mammals, but their impact on reptilian communities is not known. I conducted a large-scale mark-recapture study to evaluate population growth of E. macquarii in the Albury region of the upper Murray River by determining growth, reproduction and survival. The study was conducted downstream of the first, and largest, impoundment on the Murray River, La

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Spencer, Ricky-John. "The Murray River turtle, Emydura macquarii population dynamics, nesting ecology and impact of the introduced red fox, Vulpes vulpes /." Connect to full text, 2000. http://hdl.handle.net/2123/373.

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Thesis (Ph. D.)--University of Sydney, 2001.<br>Includes tables. Title from title screen (viewed Apr. 22, 2008). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Biological Sciences, Faculty of Science. Degree awarded 2001; thesis submitted 2000. Includes bibliography. Also available in print form.

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Dalem, Anak Agung Gde Raka, University of Western Sydney, and Faculty of Science and Technology. "Demography and movement patterns of a population of eastern snake-necked turtles, Chelodina longicollis (Shaw, 1794)." THESIS_FST_xxx_Dalem_A.xml, 1998. http://handle.uws.edu.au:8081/1959.7/63.

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With 226-343 individual/ha, population density of Chelodina longicollis in the dams of the University of Western Sydney-Hawkesbury Richmond campus were in the range of other studies around Australia. Their size extremes (24.3 -223.3 mm) were within the range of previous studies, and the overall sex ratio was skewed toward males. The annual growth rates varied and were weakly correlated with animal size. Scute shedding occurred between September and April and peaked in December. Turtles were generally in excellent condition, indicating that sufficient food resources were available in local habi

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Rodrigues, JoÃo FabrÃcio Mota. "How the freshwater turtles survive and reproduce in caatinga? - Life history traits of Phrynops tuberosus (Testudines: Chelidae)." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=9486.

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The life history theory studies the characteristics combinations that maximize the organisms reproduction and survival in the environment where they live. The species use the habitat in a diverse way and this use depends on the environmental conditions in the available habitats. Phrynops tuberosus, a freshwater turtle found in the north-northeastern regions of Brazil, is the animal-model chosen for the life history traits and habitat use studies. This work aims understand how this species reproduce, maintain and use the habitat in Caatinga. The study generated biological and ecological knowle

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Miller, Veronica A. "Selected Demography and Population Estimation of Trachemys scripta (Yellow-bellied Slider) in North Carolina as it Relates to Turtle Harvesting." NCSU, 2006. http://www.lib.ncsu.edu/theses/available/etd-05102006-094922/.

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In the year 2000, a reported 460 turtles were removed from North Carolina for commercial use. In 2002, the reported take of turtles soared to a staggering 23,311 turtles. A continuation of this trend could severely deplete the turtle populations of North Carolina in a short time. Therefore a moratorium on commercial turtle harvesting was instituted by the North Carolina General Assembly on July 1, 2003, effective until the NC Wildlife Resources Commission could determine rules and regulations for harvesting. It is crucial to know the level of harvest that populations can sustain, and, if a pop

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Bernacki, Lucas Edward. "The Molecular Evolution of Non-Coding DNA and Population Ecology of the Spiny Softshell Turtle (Apalone spinifera) in Lake Champlain." ScholarWorks @ UVM, 2015. http://scholarworks.uvm.edu/graddis/289.

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ABSTRACT Spiny softshell turtles (Apalone spinifera) occur at the northwest limit of their range in Lake Champlain. This species, although widespread across North America, is listed as threatened in Vermont due to habitat destruction and disturbances of anthropogenic origin. The population of spiny softshell turtles in Lake Champlain is isolated from other North American populations and is considered as an independent management unit. Efforts to obtain information on the biology of spiny softshell turtles in Lake Champlain precede 1936 with conservation measures being initiated in 1987. Method

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Read, Tyffen Chloe. "Population Structure, Migration and Habitat Ecology of the Green Turtle (Chelonia mydas) in the Grand Lagon Sud of New Caledonia." Thesis, Griffith University, 2015. http://hdl.handle.net/10072/367599.

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Conservation management of wildlife populations requires a comprehensive understanding of the population structure, movement and ecology of threatened and endangered species. The green turtle, Chelonia mydas, is a species found in both tropical and subtropical waters worldwide and since 1982 is listed as endangered on the IUCN red list of threatened species. While C. mydas is afforded protection in many areas of the Pacific it still faces significant threats, both anthropogenic (e.g. by-catch from commercial and recreational fishing, directly targeted as a food sources by in-digenous groups an

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Beshara, Andrea L. "Determining population boundaries and densities of red-eared slider turtles (Trachemys scripta) : an empirical field test /." Read thesis online, 2009. http://library.uco.edu/UCOthesis/BesharaAL2009.pdf.

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Colteaux, Benjamin C. "The Status of Snapping Turtles (Chelydra serpentina) in Virginia: Population Viability, Demography, Regulatory Analysis, and Conservation." VCU Scholars Compass, 2017. https://scholarscompass.vcu.edu/etd/5162.

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Snapping turtles (Chelydra serpentina) are being harvested in unprecedented numbers in the United States (US) to meet the needs of international markets. Over three million live snapping turtles from farm and wild caught stock were exported from the US to Asia in 2012-14 alone. In the Commonwealth of Virginia, records indicate that 29,860 snapping turtles were commercially harvested between 2000 and 2015. Size limits are often used to regulate harvest pressure in snapping turtles and other game species. I analyzed the historic harvest of eleven US states to test the efficacy of minimum-size li

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