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Dissertations / Theses on the topic 'Sea turtles Sea turtles Hawksbill turtle'

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Published: 4 June 2021
Last updated: 1 February 2022

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1

Groshens, Erica B. "Internesting and post-nesting movement and behavior of Hawksbill sea turtles, Eretmochelys imbricata, at Buck Island Reef National Monument, St. Croix, USVI." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-09292009-020339/.

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2

Joseph, Juanita. "Conservation genetics of green (Chelonia mydas) and hawksbill (Eretmochelys imbricata) sea turtles of Southeast Asia." Thesis, Royal Holloway, University of London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436110.

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3

Pemberton, Roy A. "The Habitat Utilization of Juvenile Hawksbill Sea Turtles (Eretmochelys imbricata) at Buck Island Reef National Monument, St Croix, U.S Virgin Islands." W&M ScholarWorks, 2000. https://scholarworks.wm.edu/etd/1539617756.

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4

Le, Gouvello Du Timat Diane Zelica Marie. "The effects of turtle-introduced nutrients on beach ecosystems." Thesis, Nelson Mandela Metropolitan University, 2016. http://hdl.handle.net/10948/6959.

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Resource subsidies are flows of nutrients from one ecosystem to another. Sandy beach ecosystems are at the interface between land and sea and thus receive nutrients from both land/seascapes. The seasonal nesting of sea turtles introduces large inputs of eggs, and so nutrients, onto sandy beach ecosystems, but little is known about the effects of these spatially and temporally variable nutrient input pulses on the dynamics of consumers in the recipient system. In this study, I examined the ecological role of sea turtles as vectors of nutrients that introduce large amounts of nutrients (in the f
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5

Cason, Heather L. "Nesting behavior, growth rates, and size distribution of loggerhead sea turtles (Caretta caretta) on Blackbeard Island National Wildlife Refuge an evaluation of recruitment in Georgia /." Click here to access thesis, 2009. http://www.georgiasouthern.edu/etd/archive/spring2009/heather_l_cason/cason_heather_l_200901_ms.pdf.

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Thesis (M.S.)--Georgia Southern University, 2009.<br>"A thesis submitted to the Graduate Faculty of Georgia Southern University in partial fulfillment of the requirements for the degree Master of Science." Directed by David C. Rostal. ETD. Includes bibliographical references (p. 47-49)
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6

Scott, Rebecca. "Lagrangian analysis of sea turtle ecology." Thesis, Swansea University, 2013. https://cronfa.swan.ac.uk/Record/cronfa42364.

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Many marine organisms are highly mobile, which presents a variety of research and conservation management challenges. Sea turtles are a particularly paradigmatic group of long distant migrants whose movements as adults have been detailed by satellite tracking technology. However, small hatchlings are not amenable to this approach. This thesis used Lagrangian oceanography approaches to study the cryptic lives of juvenile turtles, since ocean currents drive their dispersion from natal beaches. Through increasingly sophisticated and novel uses of Lagrangian surface drifter buoys, state-of- the-ar
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7

Goshe, Lisa R. "Age at maturation and growth rates of green sea turtles (Chelonia Mydas) along the southeastern U.S. Atlantic Coast estimated using skeletochronology." View electronic thesis (PDF), 2009. http://dl.uncw.edu/etd/2009-1/goshel/lisagoshe.pdf.

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8

Hamed, Ahmed. "Economic Valuation of Florida Sea Turtles in Face of Sea Level Rise." Master's thesis, University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5942.

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Sea level rise (SLR) is posing a great risk of flooding and inundation to coastal areas in Florida. Some coastal nesting species, including sea turtle species, have experienced diminished habitat from SLR. In an effort to assess the economic and ecosystem service loss to coastal areas with respect to sea turtles Contingent Valuation Method (CVM) and Habitat Equivalency Analysis (HEA) were used. The CVM was used to measure the economic impacts of SLR on sea turtles. Open-ended and dichotomous choice CVM was used to obtain the willingness to pay (WTP) values of Florida residents to implement ce
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9

Smith, Donald Thomas Jeremy. "The cranial morphology of fossil and living sea turtles (Cheloniidae, Dermochelyidae and Desmarochelyidae)." Thesis, Kingston University, 1989. http://eprints.kingston.ac.uk/20531/.

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Many of the early taxonomic studies of fossil sea turtles relied heavily on postcranial evidence. Both the Cheloniidae and Dermochelyidae were erected on detail of the shell and limbs. ‘Desmatochelys’ was originally described in part using cranial evidence, but later workers (Zangerl and Sloan, 1960) suppressed the family on evidence from the shell. Little in the way of comparative work has been undertaken using the cranial morphology of fossil or living forms. This is thought long overdue. The first bone by bone description of the living cheloniids has revealed a large number of taxonomically
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10

Caldas, Patrício Ana Rita. "Ecology of the green sea turtle (Chelonia mydas L.) in a changing world." Thesis, University of Exeter, 2017. http://hdl.handle.net/10871/30061.

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Climate change is threatening biodiversity, causing populations and species to adapt, or otherwise, become extinct. Sea turtles have survived dramatic climate changes in the past, however, due to a history of intense human exploitation, and the current anthropogenic threats, their current resilience may be jeopardized. The main pursuits of this thesis were to i) evaluate the resistance of green turtles to predicted climate change impacts, using a globally significant rookery, in Poilão, Guinea-Bissau, as a case study; and ii) assess key population parameters to inform the conservation managem
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11

Honarvar, Shaya Spotila James R. "Nesting ecology of Olive Ridley (Lepidochelys olivacea) turtles on Arribada nesting beaches /." Philadelphia, Pa. : Drexel University, 2008. http://hdl.handle.net/1860/2824.

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12

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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13

Searle, Linda. "Robinson Point, Belize: An Important Foraging Ground for Endangered Sea Turtles in the Western Caribbean Sea." NSUWorks, 2013. http://nsuworks.nova.edu/occ_stuetd/155.

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Anecdotal reports, flipper tag returns, satellite migration paths, and above-water and net surveys have identified an important foraging area for sea turtles in the Robinson Point area, 12 kilometers southwest of Belize City. Visual observations confirmed that sea turtles were actively foraging at Robinson Point. Sixteen 30 minute visual observations from stationary and drifting boats made 132 sea turtle sightings from October 2007 through January 2008, with a maximum of 40 sightings made in one survey. In-water capture methodology tested the traditional turtle net, which captured 14 turtles i
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14

Brock, Kelly. "EFFECTS OF A SHORE PROTECTION PROJECT ON LOGGERHEAD AND GREEN TURTLE NESTING ACTIVITY AND REPRODUCTION IN BREVARD COUNTY, FLORID." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2946.

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Marine turtle reproductive success is strongly correlated with the stability and quality of the nesting environment. Because females show fidelity to key nesting beaches, the management and physical characteristics of these beaches directly affect future generations of marine turtles and may be essential for the recovery of these threatened and endangered species. The impacts of beach restoration on loggerhead turtles (Caretta caretta) and on green turtles (Chelonia mydas) were investigated. Previous studies concerning beach nourishment projects have focused on loggerhead turtles. I compared d
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15

de, Wet Anje. "Factors affecting survivorship of loggerhead (Caretta caretta) and leatherback (Dermochelys coriacea) sea turtles of South Africa." Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1007900.

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Loggerhead (Caretta caretta) and leatherback (Dermochelys coriacea) sea turtles as well as their eggs and hatchlings have been protected on their nesting beach in South Africa (SA) since 1963. Both nesting populations were expected to show similar trends in recovery following the application of identical protection and conservation measures. The loggerhead nesting population has responded favourably to these protection efforts. In contrast, the leatherback nesting population showed an initial increase but is currently stable. The reason for this difference in response is thought to be due to d
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16

Arthur, Karen E. "Ecotoxicology of the cyanobacterium Lyngbya majuscula and health implications for green sea turtles (Chelania mydas) /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18909.pdf.

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17

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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18

Seney, Erin E. "Historical Diet Analysis of Loggerhead (Caretta caretta) and Kemp's Ridley (Lepidochelys kempi) Sea Turtles in Virginia." W&M ScholarWorks, 2003. http://www.vims.edu/library/Theses/Seney03.pdf.

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19

Sapp, Adam. "Influence of small vessel operation and propulsion system on loggerhead sea turtle injuries." Thesis, Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/33845.

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Loggerhead sea turtles (Caretta caretta) can be found worldwide, inhabiting tropical and subtropical coastal waters. The loggerhead was classified as an endangered species and placed on the International Union for Conservation of Nature and Natural Resources (IUCN) Red List in 1996 (IUCN 2006).The problem of sea turtle mortality as a result of collisions with vessels is of increasing concern, especially in the southeastern United States, where increased development along the coasts results in increased recreational boat traffic. In the United States, the percentage of strandings that were attr
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20

Wabnitz, Colette Catherine Chantal. "Sea turtle conservation and ecosystem-based management with a focus on green turtles (Chelonia mydas) and seagrass beds." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/24239.

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The design of effective species management and recovery plans for sea turtle populations requires targets that are informed by an understanding of knowledge gained at the level of individuals/populations in the context of the wider goal of protecting an ecosystem's structural and functional attributes. In this thesis I present the first detailed investigation of the multiple levels at which sea turtles, particularly green turtles (Chelonia mydas), interact with ecosystems. I begin by developing a framework for an age-structured population-level assessment of food consumption for hawksbill (E
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21

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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22

Schwoerer, Monette. "Relating climate change to the nesting phenology and nest environment of marine turtles." Master's thesis, University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6015.

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Ectotherms (including marine turtles) being especially sensitive to climate, are at risk to the accelerated rate of human-driven climate change. This study addresses two concerns associated with marine turtles and climate change – the relationship between the timing of marine turtle nesting and sea surface temperature; and the concern over the feminization of marine turtle populations due to rising sand temperatures. Previous studies of loggerhead sea turtles (Caretta caretta) and green sea turtles (Chelonia mydas) have documented the relationship between sea surface temperatures and nesting p
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23

Ryder, Cheryl E. "The effect of beach renourishment on sea turtle nesting and hatching success at Sebastian Inlet State Recreation Area, East-Central Florida." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-09192009-040558/.

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24

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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25

Earney, Megan A. "Investigating the Effect of Mechanical Beach Cleaning on Nesting, Hatching and Emergence Success of Loggerhead (Caretta caretta) and Green (Chelonia mydas) Sea Turtles in Broward County, Florida." NSUWorks, 2017. http://nsuworks.nova.edu/occ_stuetd/454.

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Sea turtles face many threats to their populations globally. Loggerhead sea turtles (Caretta caretta) and green sea turtles (Chelonia mydas) are listed by the International Union for the Conservation of Nature Red List as Endangered. In Florida, loggerhead and green sea turtles nest along the coastline during April-September. Mechanical beach cleaning is an aesthetic service performed daily on some beaches in Florida to clean the wrack line and/or the entire beach of debris. Alterations made to beaches by methods such as mechanical beach cleaning have the potential to impact sea turtle nesting
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26

Botha, Marié. "Nest site fidelity and nest site selection of loggerhead, Caretta Caretta, and leatherback, dermochelys coriacea, turtles in KwaZulu-Natal, South Africa." Thesis, Nelson Mandela Metropolitan University, 2010. http://hdl.handle.net/10948/1233.

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Loggerhead and leatherback sea turtles nest on the beaches of the north-eastern portion of Kwazulu-Natal within the iSimangaliso Wetland Park. Loggerheads place ~60 percent of all nests within an 8 km stretch of beach, whereas leatherbacks tend to space their nests more evenly along the entire length of the monitoring area. The study aimed to determine nest site fidelity of loggerheads and leatherbacks (using four decades of nesting data housed by Ezemvelo KZN Wildlife) and the factors that influence nest site selection of both species within the 56 km of turtle monitoring area (32N to 100S) a
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27

Long, Tonya Michele. "An assessment of sea turtle nesting behavior in relation to hurricane- and restoration-induced beach morphodynamics." Master's thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4527.

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Coastal habitats are highly dynamic and vulnerable to landscape-level disturbances such as storms and restoration projects. Along the east coast of Florida these areas are particularly valuable as they provide significant nesting habitat for two sea turtle species, the threatened loggerhead (Caretta caretta) and the endangered green turtle (Chelonia mydas). This coast was heavily impacted by three major hurricanes in 2004 and in some areas by large restoration projects in 2005. Recent remote sensing methods allow for broad evaluation of the shoreline and thus the ability to assess sea turtle n
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28

Caderas, Jenna. "Beach Nourishment: Effects on the Hatching & Emergence Success Rates of Leatherback (Dermochelys coriacea), Loggerhead (Caretta caretta), and Green (Chelonia mydas) Sea Turtles." NSUWorks, 2016. http://nsuworks.nova.edu/occ_stuetd/417.

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Broward County, Florida is a popular tourism destination. Due to its popularity, much of the shoreline has been modified and natural habitats were replaced with infrastructure such as houses, condominiums, resorts, and restaurants. The same Broward County beaches utilized by tourists and residents are important for three species of nesting sea turtles, including the Leatherback, Dermochelys coriacea, Loggerhead, Caretta caretta, and Green, Chelonia mydas, Turtles. The Broward County Sea Turtle Conservation Program (BCSTCP) collects yearly data in order to study these endangered reptiles. Incre
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Kleppan, Danielle R. "Beach Compaction Impact on Nesting Success of Loggerhead (Caretta caretta) Sea Turtles: A Comparison Between a Natural and Renourished Beach in Northern Broward County, Florida." NSUWorks, 2013. http://nsuworks.nova.edu/occ_stuetd/162.

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The beaches of Broward County, Florida are a prevalent nesting site for loggerhead (Caretta caretta) sea turtles, however extensive beach erosion is threatening critical nesting habitat. Beach renourishment, the process of transporting offshore or upland sediment onshore, is a widely used method of replenishing lost sand. However, renourishment can negatively affect sea turtle nesting habitat by increasing beach compaction; the resistance to applied pressure in pounds per square inch (psi). Increased sand compaction impedes the digging of the female which affects nesting success. The influence
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30

Baptistotte, Cecilia. "Caracterização espacial e temporal da fibropapilomatose em tartarugas marinhas da costa brasileira." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/91/91131/tde-11032008-153152/.

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Fibropapilomatose (FP) é uma doença caracterizada por múltiplas massas de tumores cutâneos variando de 0,1 a mais de 30 cm em diâmetro. Afeta primariamente tartarugas-verdes (Chelonia mydas), mas também outras espécies de tartarugas marinhas ao redor do mundo. O objetivo deste estudo é, através de dados já sistematicamente coletados pelo Programa Brasileiro de Proteção, Pesquisa e manejo das Tartarugas Marinhas - Projeto TAMAR-IBAMA, caracterizar, no tempo e no espaço, a ocorrência desta doença em tartarugas marinhas na costa brasileira, entre os anos de 2000 a 2005. As tartarugas encontradas,
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31

Kawana, Lucy Teal. "The Effect of Air Temperature on the Incubation Period and Hatching Success of In Situ Loggerhead Sea Turtle (Caretta caretta) Clutches in Broward County, Florida." NSUWorks, 2013. http://nsuworks.nova.edu/occ_stuetd/163.

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The survival rates of pre-emergent sea turtle hatchlings are critically dependent upon temperature. This study aimed to determine if changes in air temperature can explain some of the variability in hatching success observed over a 12 year period for loggerhead sea turtle (Caretta caretta) nests in Broward County. Air temperature data for the hatching seasons of 1999 to 2010 were obtained from the NOAA National Climatic Data Center’s Fort Lauderdale beach station. The loggerhead sea turtle hatching data collected by the Broward County Sea Turtle Conservation Program from the same time period w
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32

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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33

Lalire, Maxime. "STAMM, un modèle individu-centré de la dispersion active des tortues marines juvéniles : applications aux cas des tortues luths du Pacifique Ouest et de l'Atlantique Nord-Ouest et aux tortues caouannes de l'ouest de l'océan Indien." Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30259/document.

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Les tortues marines, espèces emblématiques des écosystèmes marins, sont de plus en plus menacées par les effets directs et indirects des activités humaines. Leur cycle de vie est complexe, partagé entre divers habitats, souvent très éloignés les uns des autres. Leur conservation nécessite donc d'identifier les habitats occupés à chaque stade de vie et les routes migratoires empruntées entre ces différents habitats. Si l'écologie spatiale des tortues adultes est relativement bien connue, notamment grâce au suivi par satellite, il n'en va pas de même pour les juvéniles qui se développent plusieu
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Plot, Virginie. "Caractéristiques maternelles, performances et stratégies de reproduction des tortues marines de Guyane." Phd thesis, Université de Strasbourg, 2012. http://tel.archives-ouvertes.fr/tel-00867096.

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Les organismes font face à des compromis entre leur reproduction, leur maintenance et leur survie, dont découlent des stratégies adaptatives énergétiques, comportementales et écologiques.Ce travail de thèse propose de préciser les stratégies de reproduction chez la tortue luth Dermochelys coriacea nidifiant en Guyane. Nous avons étudié les caractéristiques maternelles, les performances de reproduction et les potentiels liens existants entre la migration et la reproduction chez une population d'individus d'identité connue, suivis grâce à un suivi longitudinal original combinant biométrie, physi
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(6853298), Quintin D. Bergman. "Spatial Ecology of Hawksbill Turtles (Eretmochelys imbricata) Nesting at Gandoca-Manzanillo National Wildlife Refuge, Costa Rica." Thesis, 2019.

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The beaches in the Gandoca-Manzanillo National Wildlife Refuge (GMNWR) in southeastern Costa Rica are known to host nesting critically endangered hawksbill sea turtles (<i>Eretmochelys imbricata</i>). The spatial ecology and movement behaviors of this nesting population has never been observed. Evaluating the spatial ecology of nesting sea turtles allows for a better understanding of their local movement behavior as well as their large scale oceanic movements that inform conservation needs. Satellite tracks reveal internesting, postnesting migration, and foraging behaviors for four nesting haw
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Von, Brandis Rainer Georg. "The ecology of foraging hawksbill turtles (Eretmochelys imbricata) at D'Arros Island and St. Joseph Atoll in the Seychelles, Western Indian Ocean." Thesis, 2010. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000490.

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Thesis (DTech. degree in Nature Conservation.)--Tshwane University of Technology, 2010.<br>Hawksbill sea turtles (Eretmochelys imbricata) have been reduced by more than 80% worldwide in the last century and are considered critically endangered. Although nesting populations have been subject to numerous studies, there is a considerable lack of knowledge pertaining to the in-water behaviour and ecological functions of wild foraging hawksbill populations. This is especially true for the Western Indian Ocean as important topics such as habitat use and dietary items have scarcely been explored. Bet
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37

Storch, Sandra [Verfasser]. "The behaviour of immature and female Hawksbill turtles (Eretmochelys imbricata) at sea / vorgelegt von Sandra Storch." 2003. http://d-nb.info/972249044/34.

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38

Piniak, Wendy Erin Dow. "Acoustic Ecology of Sea Turtles: Implications for Conservation." Diss., 2012. http://hdl.handle.net/10161/6159.

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<p>An understanding of sensory ecology, how animals receive and respond to their environment, can be a powerful tool for the conservation of endangered species because it can allow us to assess the potential success of actions designed to mitigate particular threats. We have a general understanding of how sea turtles perceive and respond to certain visual, magnetic, and chemical cues, but we understand very little about how they perceive and respond to acoustic cues. This dissertation explores the acoustic ecology of sea turtles, focusing on their auditory capabilities, responses to acoustic s
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Stewart, Kelly Rhoda. "Establishment and Growth of a Sea Turtle Rookery the Population Biology of the Leatherback in Florida." Diss., 2007. http://hdl.handle.net/10161/391.

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Garner, Jeanne. "Reproductive Endocrinology of Nesting Leatherback Sea Turtles in St. Croix, U.S. Virgin Islands." Thesis, 2012. http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-11189.

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The global population of leatherback sea turtles is decreasing worldwide, with extinction predicted for some populations within 15 years. The population of leatherbacks nesting at Sandy Point National Wildlife Refuge (SPNWR), St. Croix, USVI, displayed a significant population increase from 1982 2001 but has experienced a slowed recovery since then. To better understand the causes of this decline, a historical database of SPNWR nesting female data was utilized to investigate trends in reproductive indices. Since 2001, average remigration interval (RI) has increased significantly, while averag
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Robins, Julie Belinda. "A scientific basis for a comprehensive approach to managing sea turtle by-catch : the Queensland east coast as a case study /." 2002. http://eprints.jcu.edu.au/1251/1/01front.pdf.

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The Australian continental shelf is one of the few remaining areas of the world where sea turtle populations have been subject to relatively small levels of direct harvest and where nesting- and feeding-ground habitats remain essentially intact. The area supports six of the world’s seven sea turtle species (i.e., Chelonia mydas, Caretta caretta, Eretmochelys imbricata, Natator depressus, Lepidochelys olivacea and Dermochelys coriacea), contains significant nesting populations of three species (i.e., Chelonia mydas, Caretta caretta, Eretmochelys imbricata), the world’s only nesting populations
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McClellan, Catherine Marie. "Behavior, Ecology, and Conservation of Sea Turtles in the North Atlantic Ocean." Diss., 2009. http://hdl.handle.net/10161/1128.

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<p>Sea turtles have experienced dramatic population declines during the last century as a consequence of direct harvest, by-catch in fisheries, and habitat loss. Despite almost 50 years of partial international protection, several populations of sea turtles are still at imminent risk of extinction. Our knowledge of their complex life histories is still far from complete; these knowledge gaps hinder our ability to provide scientific advice regarding their conservation and management. It is the very complexity of their life histories, which allows them to exploit widely separated habitats du
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Pegas, Fernanda V. "Twenty-five Years of Sea Turtle Protection in Brazil: Evaluating Local Effects." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-05-761.

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This study evaluated how three conservation approaches implemented by the Brazilian Sea Turtle Conservation Program (the TAMAR Project) are related to local support for sea turtle conservation in Praia do Forte, Brazil. Four species of sea turtles nest in Praia do Forte. In Praia do Forte, locals harvested sea turtles for their meat and eggs on a regular basis to support subsistence needs. The three conservation strategies analyzed are employment opportunities and alternative sources of income from sea turtle ecotourism; enforcement of federal sea turtle protection laws; and implementation of
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Bjorkland, Rhema Hyacinth. "An Assessment of Sea Turtle, Marine Mammal and Seabird Bycatch in the Wider Caribbean Region." Diss., 2011. http://hdl.handle.net/10161/5632.

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<p>Sea turtles, marine mammals and sea birds are vulnerable to higher mortality rates as a direct function of incidental capture (bycatch) in marine fisheries. Their migratory behavior exposes them to multiple fishing gear types and fishing practices and efforts to understand the rates of interaction between these taxa and fishing necessarily entails analysis of data over large spatial areas (ocean-basin) and multiple types of fishing activities. The acquisition the requisite data, however, requires considerable resources and many regions in the world are data-poor with respect to bycatch, in
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Bostwick, Angela Sue. "Use of Shark Shapes to Reduce Incidental Capture of Sea Turtles in the Long-Line Fisheries." Thesis, 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8409.

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An estimated 250,000 loggerhead (Caretta caretta) and leatherback (Dermochelys coriacea) sea turtles are taken each year as incidental catch by the pelagic long-line fishing industry. Various gear and bait modifications as well as time/area closures to fishing, enacted to reduce anthropogenic impacts on sea turtles, have been ineffective or incompatible with regional fishery interests. Chemosensory and auditory deterrents have yielded little benefit thus far in repelling sea turtles from long-lines. The fact that sea turtles are highly visual animals has precipitated studies of the efficacy of
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Cornwell, Myriah Lynne. "Citizen-Based Sea Turtle Conservation Across the Developing-Developed World Divide." Diss., 2011. http://hdl.handle.net/10161/5691.

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<p>This dissertation research explores participatory sea turtle conservation monitoring through a comparison of two case studies, one in North Carolina (NC), USA and the other in Baja California Sur (BCS), Mexico. Participatory approaches in conservation management can supplement state capacity as well as strengthen the involvement of citizens in environmental governance and knowledge production. Despite scholarship challenging the validity of the categories of developing and developed nations, this categorical assumptions derived from this binary world divide continue to inform conservation,
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Bird, Kristin E. "Community-based sea turtle conservation in Baja, Mexico : integrating science and culture." Thesis, 2002. http://hdl.handle.net/1957/29859.

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This thesis discusses both theoretical and practical considerations inherent in conducting community-based research within a case study of sea turtle conservation in Baja California, Mexico. A brief background, including the general ecology, status and distribution of sea turtles of the Baja peninsula is presented, with an overview of the current and historic use and management of sea turtles. Several sets of theories provide the context within which the case example is analyzed. A discussion of how concepts of "science" and "knowledge" are shaped and how these perceptions impact choices made
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Tanabe, Lyndsey K. "Sand temperature profiles at turtle nesting sites in the Red Sea: implications for hatchling sex ratios." Thesis, 2018. http://hdl.handle.net/10754/630220.

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Climate change poses a serious threat to species that demonstrate temperature dependent sex determination (TDS), including marine turtles. Increased temperatures can result in highly female skewed sex ratios and decreased hatchling success. In situ sand temperature data was collected from the nesting depth of hawksbill and green turtles at five study sites along the coast of the Red Sea. The sand temperature profile at four of the sites exceeded the pivotal temperature of 29.2°C (commonly cited in literature) throughout the study duration, which suggests feminization of turtles could be occur
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(6630767), Ian M. Silver-Gorges. "Evidence for Hierarchical Structuring and Large-Scale Connectivity in Eastern Pacific Olive ridley Sea Turtles (Lepidochelys olivacea)." Thesis, 2019.

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<div>Inferring genetic population structure in endangered, highly migratory species such as sea turtles is a necessary but difficult task in order to design conservation and management plans. Genetically discrete populations are not obvious in highly migratory species, yet require unique conservation planning due to unique spatial and behavioral life-history characteristics. Population structure may be inferred using slowly evolving mitochondrial DNA (mtDNA), but some populations may have diverged recently and are difficult to detect using mtDNA. In these cases, rapidly evolving nuclear micros
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(10711260), Laura Christine St Andrews. "ASSESSING DIFFERENT MONITORING TECHNIQUES FOR JUVENILE GREEN TURTLES (CHELONIA MYDAS) IN THE BAHAMAS." Thesis, 2021.

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<div>Sea turtles are integral components of many marine ecosystems. Green turtles (Chelonia mydas) are generally herbivorous, feed primarily on seagrasses, and are endangered in the Caribbean. The species utilizes extensive marine habitats for foraging and migratory routes, and because of its broad distribution, it is difficult to conduct population assessments. Here, I assessed commonly used techniques for monitoring green turtles in the wild. Specifically: (1) biopsy sampling for molecular assays and (2) unoccupied aerial vehicles (UAVs) deployment and boat-based surveys for population monit
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