Relevant bibliographies by topics / Sea turtles

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Sea turtles'

Author: Grafiati
Published: 4 June 2021
Last updated: 28 July 2024

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Journal articles on the topic "Sea turtles"

1

Winarto, Winarto, and Siva Devi Azahra. "Karakteristik dan Preferensi Habitat Penyu dalam Membuat Sarang Alami untuk Peneluran." BIOEDUSAINS:Jurnal Pendidikan Biologi dan Sains 5, no. 1 (June 22, 2022): 189–96. http://dx.doi.org/10.31539/bioedusains.v5i1.3655.

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This study aims to examine the characteristics and environmental factors of turtles' preferences in making their natural nests. The method used is the descriptive quantitative method. The results showed that there were two types of turtles found during the observation, namely the green turtle (Chelonia mydas) and the hawksbill turtle (Eretmochelys imbricata). Measurements and observations of the characteristics of the 14 nesting points showed that the diameter and depth of the green turtle's nest were larger than those of the hawksbill turtle. Both types of turtles have a preference for nesting areas on sloping beaches with temperatures of 28-30ºC and humidity of 76-89%, as well as being around vegetation in the form of sea pine (Casuarina equisetifolia), sea oyster (Gynura sp), sea pandanus (Pandanus odorifer), sea kangkung (Ipomea peltate) and sea hibiscus (Thespesia populnea). In conclusion, temperature, humidity and types of vegetation around the nest determine the turtle's preference in making natural nests for laying eggs. Keywords: Nest Characteristics, Conservation, Turtle, Habitat Preference
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Harjiyatni, F. R., J. S. Murdomo, Sri Suwarni, Hartanti, Puji Prikhatna, Retno Lantarsih, and W. H. Putri. "Sea Turtle Protection: A Case Study of Protected Sea Turtle Capture in Gunungkidul Regency, Indonesia." IOP Conference Series: Earth and Environmental Science 1030, no. 1 (June 1, 2022): 012018. http://dx.doi.org/10.1088/1755-1315/1030/1/012018.

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Abstract This paper aims to discuss the legal process for capturing protected turtles in Gunungkidul Regency and the rescued green turtle’s background. This research uses a socio-legal approach. Data were collected using in-depth interviews and observation and analyzed qualitatively. The result shows: first, the process of catching turtles carried out by community members is strictly enforced. The Natural Resources Conservation Agency of Yogyakarta Special Region submitted the turtle arrest case to police investigators for further investigation. Whatever reasons people put forward, it doesn’t stop the police from strictly enforcing the turtle capture case. Second, the background of the capture of green turtles is due to the lack of public awareness and concern about the importance of turtles as endangered species that are protected and should not be caught. In this case, the regulations regarding the protection and prohibition of capturing turtles are complete, but the local communities often violate them. The results suggest a need to strengthen local communities to understand the importance of protecting turtles as endangered species and strict sanctions for turtle capture. It is not only to establish the education community but also to empower the community to provide the initial information to the investigators if it is found the violation of the Act on the turtles protection.
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Fadli, S. N., N. H. Idris, M. J. Osman, N. Othman, and M. H. I. Ishak. "Spatial Distribution and the Influence of Surface Temperature and Green Area on Sea Turtle Nesting Sites in Peninsular Malaysia." IOP Conference Series: Earth and Environmental Science 1240, no. 1 (September 1, 2023): 012012. http://dx.doi.org/10.1088/1755-1315/1240/1/012012.

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Abstract Malaysia is home to four of the seven sea turtles in the world, with Malaysian islands being one of the potential areas for sea turtle landing and nesting. However, sea turtles are classified as endangered species because they face extinction mainly due to land use changes, human marine activities, and environmental factors. As a result, they are now among the most important resources for ecotourism. Green turtles are the most prevalent species (endangered), while the hawksbill turtle is one of the world’s most seriously endangered marine turtle species today. Hence, considering the importance of improving turtle habitat in Malaysia, this study investigated the sea turtle’s nesting site preference in Peninsular Malaysia using spatial analysis. The objectives of this study are (1) to map sea turtle nesting sites in Peninsular Malaysia for five years (from 2017-2021) and (2) to identify the influence of surface temperature and landscape characteristics on sea turtle nesting habitats. This study used the binomial regression method to determine the significant environmental factors such as temperature, distance from the green area and the coastal line that could influence the preference for sea turtle habitat. The results show a positive relationship between temperature and that more sea turtles will nest and land in the area with the higher temperature. Also, more sea turtles prefer to land and nest near green areas. These findings confirmed the influence of green areas in turtle nesting sites in Peninsular Malaysia. It could assist the authorities in further understanding the importance of green areas in turtle nesting site preference and developing a mitigation plan to protect sea turtle habitat.
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Báez, José C., David Macías, Salvador García-Barcelona, and Raimundo Real. "Interannual Differences for Sea Turtles Bycatch in Spanish Longliners from Western Mediterranean Sea." Scientific World Journal 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/861396.

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Recent studies showed that regional abundance of loggerhead and leatherback turtles could oscillate interannually according to oceanographic and climatic conditions. The Western Mediterranean is an important fishing area for the Spanish drifting longline fleet, which mainly targets swordfish, bluefin tuna, and albacore. Due to the spatial overlapping in fishing activity and turtle distribution, there is an increasing sea turtle conservation concern. The main goal of this study is to analyse the interannual bycatch of loggerhead and leatherback turtles by the Spanish Mediterranean longline fishery and to test the relationship between the total turtle by-catch of this fishery and the North Atlantic Oscillation (NAO). During the 14 years covered in this study, the number of sea turtle bycatches was 3,940 loggerhead turtles and 8 leatherback turtles, 0.499 loggerhead turtles/1000 hooks and 0.001014 leatherback turtles/1000 hooks. In the case of the loggerhead turtle the positive phase of the NAO favours an increase of loggerhead turtles in the Western Mediterranean Sea. However, in the case of leatherback turtle the negative phase of the NAO favours the presence of leatherback turtle. This contraposition could be related to the different ecophysiological response of both species during their migration cycle.
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van der Geest, Nick van der, Lorenzo Garcia, Roy Nates, and Alberto Gonzalez-Vazquez. "Sea Turtles Employ Drag-Reducing Techniques to Conserve Energy." Journal of Marine Science and Engineering 10, no. 11 (November 17, 2022): 1770. http://dx.doi.org/10.3390/jmse10111770.

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Sea turtles are recognised as one of the ocean’s most remarkable migratory species, accomplishing journeys that cover thousands of kilometres. This fact is even more extraordinary when considering sea turtles consume mostly low-energy foods. The biology of sea turtles dominates the literature; however, the swimming strategies they employ to achieve their migratory success from a biomechanical and hydrodynamic viewpoint is relatively unexplored. In past research, the sea turtle’s upstroke has been debated among researchers as to whether it is passive or for thrust production. In this work, we recreate a model based on the green sea turtle (Chelonia mydas) and develop an ad hoc testing rig to uncover the secrets behind the sea turtle’s upstroke. Our findings suggest sea turtles utilise a passive upstroke that can substantially lower the animal’s drag coefficient to levels that cause insignificant losses in swim speed despite not developing any thrust force. This can conceivably save the animal a notable amount of energy as the upstroke is responsible for a large percentage of the overall limb beat cycle. These findings could potentially pave a path towards developing high-efficiency bioinspired underwater drone technologies.
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Lohmann, Kenneth J., and Catherine M. F. Lohmann. "Sea Turtle Navigation and the Detection of Geomagnetic Field Features." Journal of Navigation 51, no. 1 (January 1998): 10–22. http://dx.doi.org/10.1017/s0373463397007649.

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The lives of sea turtles consist of a continuous series of migrations. As hatchlings, the turtles swim from their natal beaches into the open sea, often taking refuge in circular current systems (gyres) that serve as moving, open-ocean nursery grounds. The juveniles of many populations subsequently take up residence in coastal feeding areas that are located hundreds or thousands of kilometres from the beaches on which the turtles hatched; some juveniles also migrate between summer and winter habitats. As adults, turtles periodically leave their feeding grounds and migrate to breeding and nesting regions, after which many return to their own specific feeding sites. The itinerant lifestyle characteristic of most sea turtle species is thus inextricably linked to an ability to orient and navigate accurately across large expanses of seemingly featureless ocean.In some sea turtle populations, migratory performance reaches extremes. The total distances certain green turtles (Chelonia mydas) and loggerheads (Caretta caretta) traverse over the span of their lifetimes exceed tens of thousands of kilometres, several times the diameter of the turtle's home ocean basin. Adult migrations between feeding and nesting habitats can require continuous swimming for periods of several weeks. In addition, the paths of migrating turtles often lead almost straight across the open ocean and directly to the destination, leaving little doubt that turtles can navigate to distant target sites with remarkable efficiency.
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van der Geest, Nick, and Lorenzo Garcia. "Employing Robotics for the Biomechanical Validation of a Prosthetic Flipper for Sea Turtles as a Substitute for Animal Clinical Trials." Biomechanics 3, no. 3 (September 4, 2023): 401–14. http://dx.doi.org/10.3390/biomechanics3030033.

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Sea turtles are a keystone species for the ocean’s ecosystem, with all species currently being listed as endangered. Such a threat is mainly due to human factors such as fishing net entanglement. This entanglement often comes at the expense of turtles losing a pectoral flipper. The reduction in a sea turtle’s survival odds upon losing a flipper is a significant concern. This issue extends beyond individual animals, as the potential extinction of sea turtles could have detrimental effects on ocean health and subsequently disrupt our lifestyles. In this work, with the help of robotics, we tested the suitability of a prosthetic flipper for sea turtles that have lost a flipper. Testing with our sea-turtle-inspired robot helped to demonstrate the prosthetic flipper’s performance without clinical trials in live animals. The robot showed that the prosthetic could closely mimic the sea turtle’s downstroke and upstroke, allowing the animal to regain control in roll, pitch, and yaw, despite the absence of anatomical joints and related muscles. Additionally, swim speed tests provided an average swim speed of 0.487 m/s while dragging 6 m of cable to give a calculated maximum swim speed of 0.618 m/s, coming close to the average swim speed of wild sea turtles of 0.6 m/s. Our aspiration is that the findings from this study will pave the way for an open-source implant design, empowering veterinary professionals globally to aid injured turtles. Furthermore, this research promises to inspire additional animal-based robotic designs, advancing technologies geared towards assisting other animals in distress.
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Guimarães, Suzana Machado, Davi Castro Tavares, and Cassiano Monteiro-Neto. "Incidental capture of sea turtles by industrial bottom trawl fishery in the Tropical South-western Atlantic." Journal of the Marine Biological Association of the United Kingdom 98, no. 6 (March 27, 2017): 1525–31. http://dx.doi.org/10.1017/s0025315417000352.

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The five sea turtle species occurring in Brazilian waters are susceptible to threats, including incidental catches by fisheries. Studies on incidental captures in fishing gears are the main focus of several conservation actions due to high sea turtle fishery mortality worldwide. This study provides the first evaluation of incidental sea turtle catches by industrial bottom trawl fisheries operating in Brazilian waters. Four twin-trawler vessels were monitored between July 2010 and December 2011 by captains who voluntarily completed logbooks. Forty-four turtles were captured during the 1996 tows (8313 fishing hours), resulting in a catch of 5.3 ± 0.8 turtles per 1000 h per unit effort. Captured species included the loggerhead turtle (Caretta caretta, 22 individuals), olive ridley turtles (Lepidochelys olivacea, 21 individuals) and one green turtle (Chelonia mydas). Water depth was the only variable that significantly affected sea turtle captures according to Generalized Linear Models. The capture rates reported in this study ranked sixth in relation to other published studies of similar fisheries occurring worldwide. Considering the importance of this region for sea turtles, the increasing evidence of sea turtle mortality and the goals of the National Action Plan for Conservation of Sea Turtles in Brazil, it is essential to identify the main threats towards these animals and propose mitigating solutions to reduce sea turtle mortality induced by fishing activities. This study provides results that may guide future research and goals in meeting sea turtle conservation strategies.
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Papi, F., P. Luschi, S. Akesson, S. Capogrossi, and G. C. Hays. "Open-sea migration of magnetically disturbed sea turtles." Journal of Experimental Biology 203, no. 22 (November 15, 2000): 3435–43. http://dx.doi.org/10.1242/jeb.203.22.3435.

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Green turtles (Chelonia mydas) that shuttle between their Brazilian feeding grounds and nesting beaches at Ascension Island in the middle of the Atlantic Ocean are a paradigmatic case of long-distance oceanic migrants. It has been suggested that they calculate their position and the direction of their target areas by using the inclination and intensity of the earth's magnetic field. To test this hypothesis, we tracked, by satellite, green turtles during their postnesting migration from Ascension Island to the Brazilian coast more than 2000 km away. Seven turtles were each fitted with six powerful static magnets attached in such a way as to produce variable artificial fields around the turtle that made reliance on a geomagnetic map impossible. The reconstructed courses were very similar to those of eight turtles without magnets that were tracked over the same period and in the previous year, and no differences between magnetically disrupted and untreated turtles were found as regards navigational performance and course straightness. These findings show that magnetic cues are not essential to turtles making the return trip to the Brazilian coast. The navigational mechanisms used by these turtles remain enigmatic.
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Hossain, M. A., M. S. E. Mahfuj, S. M. A. Rashid, and M. N. Ahsan. "Present status of conservation and management of sea turtle in Cox’s Bazar district, Bangladesh." Mesopotamian Journal of Marine Sciences 28, no. 1 (April 18, 2022): 45–60. http://dx.doi.org/10.58629/mjms.v28i1.154.

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The study was conducted to know the present status of conservation and management of sea turtle in Cox’s Bazar district, Bangladesh. Two species of sea turtles have been making nest in Bangladesh. A total of 251 turtle individuals were found. The highest nesting frequency of Olive ridley (108) and Green turtles (10) were observed in February. About 21,942 hatchlings were produced and released by the hatcheries for conservational step. A total of one hundred people were selected randomly for taking interview to assess their knowledge and attitude towards sea turtle conservation and management. Most of the respondents were fishermen (55%), student and housewife were 20% and 8%, 5% were found involving in business and rest 12% were involved in others activities. About 45% of the respondents thought that turtles were beneficial while other 40% of the respondents thought turtles were harmful. The rest of the respondents (15%) answered that they were not sure whether sea turtle was beneficial or harmful. Most of the fishermen did not know about Turtle Excluder Devices (TEDs) or its uses. It was found that the nesting of sea turtles was reducing and there was lack of knowledge among the people of the study area about the importance of sea turtle conservation and management.
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Dissertations / Theses on the topic "Sea turtles"

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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.
"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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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 form of eggs) from distant foraging grounds into nutrient-poor beach ecosystems. Although some of the nutrients return to the sea in the form of hatchlings, nutrients from unhatched and depredated eggs, dead and predated hatchlings, as well as chorioallantoic fluid and egg shells remain on the beach and presumably enter sandy beach food webs. I hypothesized that turtle nutrients significantly increase the availability of nutrients to sandy beach ecosystems and that those nutrients are incorporated by both terrestrial and marine food webs. These hypotheses were tested by comparing isotopic signatures of 13C and 15N of consumers on beaches with high and low turtle nest densities. The response of meiofauna to the decomposition of turtle eggs was also investigated. I predicted that meiofaunal abundance is positively affected by turtle nutrients and that higher meiofaunal abundances will be obtained in decomposing, depredated nests. I tested this hypothesis by comparing meiofaunal abundance in naturally predated nests to densities away from turtle nests (as a control). An in situ experiment that mimics conditions of naturally predated sea turtle nest, was set up to test meiofaunal community responses to turtle nutrients over time. The study indicates that sea turtle eggs represent a short pulsed resource subsidy that increases the nutrient and energy budget of sandy beach ecosystems. The results show that of the five potential nutrient pathways tested, ghost crabs appear to consume egg nutrients in measurable quantities, altering their diet and feeding behaviour according to food availability. The study also showed that there was a strong, but short-lived positive response of meiofauna to the introduction of nutrients, with increased abundance of all taxa in predated nests and experimental treatments. This response was particularly strong for nematodes which peaked in abundance after seven days. I conclude that turtle-derived nutrients represent a pulsed resource subsidy that makes significant contribution to the energy budget of sandy beach/dune ecosystems.
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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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Avens, Larisa I. "Homing behavior, navigation, and orientation of juvenile sea turtles." Online version in pdf format, 2003. http://www.sefsc.noaa.gov/PDFdocs/Avens%5FDissertation%5F2003.pdf.

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Pendoley, Kellie Lee. "Sea turtles and the environmental management of industrial activities in North West Western Australia." Thesis, Pendoley, Kellie Lee (2005) Sea turtles and the environmental management of industrial activities in North West Western Australia. PhD thesis, Murdoch University, 2005. https://researchrepository.murdoch.edu.au/id/eprint/254/.

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The nesting demographics of sea turtles using beaches within the Barrow, Lowendal, Montebello (B-L-M) island complex on the North West Shelf of Western Australia were examined in the context of their spatial and temporal distribution and potential for exposure to industrially based artificial light sources. The distribution of overnight turtle tracks throughout the island complex confirmed high density nesting of Chelonia mydas (green turtles) on deep, sandy and high energy beaches and Natator depressus (flatback turtles) on deep, sandy and low energy beaches, while Eretmochelys imbricata (hawksbill turtle) tracks were most visible on shallow, sandy beaches adjacent to near shore coral reef habitat. The three species exhibited a summer nesting peak. Hawksbill turtles commenced nesting in September and continued through to January, green turtles commenced in November and decreased in March. Flatback turtles displayed the most constrained nesting season reported to date in Australia with 86% of the animals visits recorded in December and January only. Nesting population sizes estimated for the three species suggest that on a national scale the B-L-M complex is a moderately large green turtle and a large flatback rookery site. The hawksbill rookery is large on an international scale. While none of the green turtle nesting beaches fell within a 1.5 km radius of industrially based artificial light sources an estimated 42% of nesting flatback turtles and 12% of nesting hawksbill turtles were potentially exposed to these light sources. Testing of green turtle and hawksbill hatchling response to different wavelengths of light indicate that hatchlings from the B-L-M region respond to low wavelength much like hatchlings tested in North America (Witherington 1992a). Flatback hatchlings displayed a similar preference for low wavelength light however their responses to discrete light wavelengths between 400 nm and 700 nm suggest that this species may not discriminate well between wavelengths that lie between 450 nm and 550 nm. This response may be related to the rapid attenuation of visible light that occurs in the turbid near shore habitats favoured by this species. Field based arena studies carried out to investigate hatchling behaviour on nesting beaches with light types commonly used in industrial settings found green turtle and flatback hatchlings are significantly attracted to these lights compared to controls. Lights that emit strongly in the low wavelength range (i.e. metal halide and fluorescent) caused hatchling misorientation at lower intensities than the test light that emitted relatively poorly in this range (high pressure sodium vapour). Hawksbill hatchlings tested in situ under the influence of actual oil and gas onshore and offshore facility based lighting were disrupted from the most direct line to the ocean by these light emissions. Emergence fan mapping methods that measure hatchling orientation on nesting beaches were refined and are proposed as an alternative monitoring tool for use on beaches that are logistically difficult to access for large scale experimental orientation studies. The hatchling behaviour was clearly complicated by beach topography and moon phase. Satellite tracking of post nesting female green and hawksbill turtles from North West Shelf rookeries has identified the Western Australian location of migratory corridors and foraging grounds for these species while Scott Reef turtles migrate from their south Timor Sea rookery to Northern Territory waters. Green turtle nesting on Barrow Island and Sandy Island (Scott Reef) forage at feeding grounds 200 - 1000 km from their nesting beaches. Hawksbill turtles nesting at Varanus Island and Rosemary Islands forage at locations 50 - 450 km from their nesting beaches. While all of the nesting beaches within the B-L-M island complex are protected under the Barrow-Montebello Marine Conservation Reserves, the only foraging ground similarly protected is the Northern Territory foraging ground used by Scott Reef green turtles. None of the foraging grounds used by North West Shelf green or hawksbill turtles is currently protected by conservation reserves.
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Pendoley, Kellie Lee. "Sea turtles and the environmental management of industrial activities in North West Western Australia." Pendoley, Kellie Lee (2005) Sea turtles and the environmental management of industrial activities in North West Western Australia. PhD thesis, Murdoch University, 2005. http://researchrepository.murdoch.edu.au/254/.

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The nesting demographics of sea turtles using beaches within the Barrow, Lowendal, Montebello (B-L-M) island complex on the North West Shelf of Western Australia were examined in the context of their spatial and temporal distribution and potential for exposure to industrially based artificial light sources. The distribution of overnight turtle tracks throughout the island complex confirmed high density nesting of Chelonia mydas (green turtles) on deep, sandy and high energy beaches and Natator depressus (flatback turtles) on deep, sandy and low energy beaches, while Eretmochelys imbricata (hawksbill turtle) tracks were most visible on shallow, sandy beaches adjacent to near shore coral reef habitat. The three species exhibited a summer nesting peak. Hawksbill turtles commenced nesting in September and continued through to January, green turtles commenced in November and decreased in March. Flatback turtles displayed the most constrained nesting season reported to date in Australia with 86% of the animals visits recorded in December and January only. Nesting population sizes estimated for the three species suggest that on a national scale the B-L-M complex is a moderately large green turtle and a large flatback rookery site. The hawksbill rookery is large on an international scale. While none of the green turtle nesting beaches fell within a 1.5 km radius of industrially based artificial light sources an estimated 42% of nesting flatback turtles and 12% of nesting hawksbill turtles were potentially exposed to these light sources. Testing of green turtle and hawksbill hatchling response to different wavelengths of light indicate that hatchlings from the B-L-M region respond to low wavelength much like hatchlings tested in North America (Witherington 1992a). Flatback hatchlings displayed a similar preference for low wavelength light however their responses to discrete light wavelengths between 400 nm and 700 nm suggest that this species may not discriminate well between wavelengths that lie between 450 nm and 550 nm. This response may be related to the rapid attenuation of visible light that occurs in the turbid near shore habitats favoured by this species. Field based arena studies carried out to investigate hatchling behaviour on nesting beaches with light types commonly used in industrial settings found green turtle and flatback hatchlings are significantly attracted to these lights compared to controls. Lights that emit strongly in the low wavelength range (i.e. metal halide and fluorescent) caused hatchling misorientation at lower intensities than the test light that emitted relatively poorly in this range (high pressure sodium vapour). Hawksbill hatchlings tested in situ under the influence of actual oil and gas onshore and offshore facility based lighting were disrupted from the most direct line to the ocean by these light emissions. Emergence fan mapping methods that measure hatchling orientation on nesting beaches were refined and are proposed as an alternative monitoring tool for use on beaches that are logistically difficult to access for large scale experimental orientation studies. The hatchling behaviour was clearly complicated by beach topography and moon phase. Satellite tracking of post nesting female green and hawksbill turtles from North West Shelf rookeries has identified the Western Australian location of migratory corridors and foraging grounds for these species while Scott Reef turtles migrate from their south Timor Sea rookery to Northern Territory waters. Green turtle nesting on Barrow Island and Sandy Island (Scott Reef) forage at feeding grounds 200 - 1000 km from their nesting beaches. Hawksbill turtles nesting at Varanus Island and Rosemary Islands forage at locations 50 - 450 km from their nesting beaches. While all of the nesting beaches within the B-L-M island complex are protected under the Barrow-Montebello Marine Conservation Reserves, the only foraging ground similarly protected is the Northern Territory foraging ground used by Scott Reef green turtles. None of the foraging grounds used by North West Shelf green or hawksbill turtles is currently protected by conservation reserves.
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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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Snoddy, Jessica E. "Physiological status and post-release mortality of sea turtles released from gillnets in the Lower Cape Fear River, North Carolina." View electronic thesis (PDF), 2009. http://dl.uncw.edu/etd/2009-1/snoddyj/jessicasnoddy.pdf.

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Coles, William C. "Aspects of the biology of sea turtles in the Mid-Atlantic Bight /." W&M ScholarWorks, 1999. http://web.vims.edu/library/Theses/Coles99.pdf.

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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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Books on the topic "Sea turtles"

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Rake, Jody Sullivan. Leatherback sea turtles. North Mankato, Minn: Snap Books, 2013.

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Chambers, Stacy. Land turtles, sea turtles. Hauppauge, NY: Barron's Educational Series, Inc., 2007.

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Gish, Melissa. Sea turtles. Mankato, MN: Creative Education, 2015.

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Arnold, Caroline. Sea turtles. New York: Scholastic, 1994.

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Carr, Aaron. Sea turtles. New York, NY: AV2 by Weigl, 2016.

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Janet, Skiles, ed. Sea turtles. Boston, MA: Houghton Mifflin Company, 2004.

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Stone, Lynn M. Sea turtles. Vero Beach, Fla: Rourke Corp., 1993.

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U.S. Fish and Wildlife Service, ed. Sea turtles. [Washington, D.C.]: U.S. Fish & Wildlife Service, 1998.

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Carlin, Lydia. Sea turtles. New York: Scholastic, 2008.

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Sea turtles. New York: Holiday House, 1995.

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Book chapters on the topic "Sea turtles"

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McCarthy, Daniel A., Kenyon C. Lindeman, David B. Snyder, and Karen G. Holloway-Adkins. "Sea Turtles." In Islands in the Sand, 267–96. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-40357-7_6.

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Yaghmour, Fadi, Johannes Els, Clara Jimena Rodríguez-Zarate, and Brendan Whittington-Jones. "Marine Reptiles of the United Arab Emirates." In A Natural History of the Emirates, 585–619. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-37397-8_19.

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AbstractWithin the waters of the United Arab Emirates (UAE), there are nine sea snake species and five species of sea turtles, two of which (Hawksbill and Green Sea Turtles) are breeding and forage residents and the remainder migrate to feed through UAE waters. Not only are the waters of the UAE recognized as important habitats for Hawksbill and Green Sea Turtles, but sea turtles are ambassador species for ocean conservation and recognized as a priority species by policy makers and conservationists alike. As a result, despite their numerous challenges, Hawksbill and Green turtle populations in the country are relatively stable. On the other hand, Loggerhead and Olive Ridley Sea Turtles, along with sea snakes enjoy far less interest and attention and so their threats, ecology and population status remain ambiguous. The known challenges facing marine reptiles in the UAE include, but are not limited to, habitat destruction through coastal development, marine pollution, bycatch and climate change.
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Rusli, Mohd Uzair. "Nesting of Sea Turtles." In Encyclopedia of Animal Cognition and Behavior, 1–3. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-47829-6_628-1.

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Rusli, Mohd Uzair. "Nesting of Sea Turtles." In Encyclopedia of Animal Cognition and Behavior, 4610–12. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-319-55065-7_628.

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Piniak, Wendy E. Dow, David A. Mann, Scott A. Eckert, and Craig A. Harms. "Amphibious Hearing in Sea Turtles." In Advances in Experimental Medicine and Biology, 83–87. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4419-7311-5_18.

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Gu, Diane Yu. "Sea Turtles Return to China." In Chinese Dreams? American Dreams?, 141–55. Rotterdam: SensePublishers, 2016. http://dx.doi.org/10.1007/978-94-6300-540-1_11.

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Mancini, Agnese, Islam Elsadek, and Magdy A. N. El-Alwany. "Marine Turtles of the Red Sea." In The Red Sea, 551–65. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-45201-1_31.

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Crawford, Sharika D. "Sages of the Sea." In The Last Turtlemen of the Caribbean, 15–38. University of North Carolina Press, 2020. http://dx.doi.org/10.5149/northcarolina/9781469660219.003.0002.

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This chapter draws on an array of sources including twentieth century scientific studies to offer insight into the habits and migratory patterns of sea turtles. As a result, the chapter discusses basic sea turtle biology differentiating the distinctive features of green and hawksbill turtles. It then explains how the two turtle varieties became global commodities for niche luxury markets. The chapter explains how indigenous and early New World newcomers—both European and non-European—came to adapt and learn how to hunt turtles in the Caribbean. It also traces the development of turtle hunting in the Cayman Islands. The chapter argues that turtles played a pivotal role in shaping these small islands and coastal societies as much as sugar or banana commodities did in other parts of the Caribbean.
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Paladino, F. V., and S. J. Morreale. "Sea Turtles." In Encyclopedia of Ocean Sciences, 2622–29. Elsevier, 2001. http://dx.doi.org/10.1006/rwos.2001.0443.

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Robinson, N. J., and F. V. Paladino. "Sea Turtles." In Reference Module in Earth Systems and Environmental Sciences. Elsevier, 2013. http://dx.doi.org/10.1016/b978-0-12-409548-9.04352-9.

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Conference papers on the topic "Sea turtles"

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Kelly, Bethany, Kenny Nguyen, Zach Miles, Salvador Mayoral, Susan Piacenza, Cheng Zhang, and Joseph Piacenza. "Exploring Design Trades to Extend Useful Life of Platform Terminal Transmitters on Sea Turtles." In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97473.

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Abstract Satellite-linked platform terminal transmitters (PTTs) are important tools for conducting research of sea turtles in their marine habitats. Appropriate conservation actions can be identified using PTTs, mounted to the top of sea turtles’ shells, to collect information about migratory routes and habitat usage. However, there is concern that PTTs introduce hydrodynamic drag that may bias natural sea turtle behavior, making the migratory and habitat data inaccurate representations of the “untagged” population. PTTs also have limited attachment durations, hypothesized to be caused by hydrodynamic loading and shell expansion during growth. The aim of this research is to investigate the hydrodynamic drag induced by PTTs on juvenile hard-shelled sea turtles, with the broader goal of increasing deployment duration and minimizing behavioral effects. A computational fluid dynamics (CFD) model was created to simulate the hydrodynamics of juvenile sea turtles. The drag and lift coefficients for five PTTs, virtually attached to the sea turtle model, were calculated using numerical methods. A comparison table of PTT performance is presented. The results will be used to explore PTT form factor design trades-offs that reduce hydrodynamic loading, while still meeting operational requirements. This research could enable biologists to collect data that more accurately represents the untagged sea turtle population.
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Essassi, Fatima Elzahra, and Yucheng Liu. "Engineering a Cost-Effective Solution for Measuring Sea Turtles’ Responses to Hypoxia." In ASME 2023 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/imece2023-111634.

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Abstract This study aimed to design a case for an accelerometer, a pressure transducer, and a battery to be attached to sea turtles in order to determine their reactions in hypoxic environments. Hypoxia, caused by fertilizer runoff from the Mississippi River into the Gulf of Mexico, represents a significant challenge to the marine ecosystem in the waters. The case design was expected to be waterproof, buoyant, 3D printable, secure for all components, able to withstand pressures at a depth of 500 feet, and resistant to the corrosiveness of salt water, all while being cost-effective. The study resulted in the creation of a dome-shaped case manufactured using ABS plus. This case could be attached to a turtle’s shell using an epoxy adhesive and implemented a nitrile rubber O-ring to ensure waterproofness. In addition, stainless steel fasteners were used to protect it against saltwater corrosion. Despite meeting all the design requirements, the study made recommendations for a more failsafe design. This work provides a valuable contribution to the field of marine biology by offering a cost-effective and reliable solution for monitoring sea turtle responses to hypoxia in oxygen-deficient environments. The developed case meets all the requirements and can be a useful tool for ocean ecology research.
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Piacenza, Joseph, Susan Piacenza, Salvador Mayoral, Alexia Kenney, and Nikolai Shields. "Design Opportunities for Sea Turtle Satellite Tracking Devices." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85583.

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Satellite-linked platform terminal transmitters (PTTs) enable biologists to study movements of sea turtles. However, PTTs often fail due to limited battery life, antenna breakage, biofouling, saltwater switch failure, and premature tag detachment. Also, PTTs induce hydrodynamic drag and may bias sea turtle behavior. Advances in technology continue to improve PTTs, however, design opportunities remain so that deployment duration is increased and behavioral biases are limited. We review how PTTs are used to obtain information on sea turtle biology, the current state-of-the-art, review recent innovations and highlight potential areas for design improvements. There remain several areas to focus on design improvements: (1) improve attachment methods so as to stretch as juveniles grow but do not add additional height to tag profile, (2) improve tag profile and attachment location on the turtle carapace to limit hydrodynamic drag, (3) experiment with different energy harvesting options to extend deployment duration, and (4) improve antenna design and material to enhance robustness and transmission quality. Capitalizing on emerging technology that allows for increasing miniaturization will likely create tags that extend deployment duration and induce negligible behavioral biases and will create data that best represents the true biology of sea turtle species in-water.
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Garcês, Andreia, and Isabel Pires. "Fibropapillomatosis on Sea Turtles, a Sentinel of Ecosystem Health?" In ECERPH-4. Basel Switzerland: MDPI, 2022. http://dx.doi.org/10.3390/ecerph-4-13096.

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Guegan, Loic, Nour Mohammad Murad, Jean Mickael Lebreton, and Sylvain Bonhommeau. "Integrating over sea radio channel for sea turtles localization in the Indian Ocean." In 2017 IEEE Radio and Antenna Days of the Indian Ocean (RADIO). IEEE, 2017. http://dx.doi.org/10.23919/radio.2017.8242222.

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van der Wal, S., S. A. Eckert, J. O. Lopez-Plana, W. Hernandez, and K. L. Eckert. "Innovative Measures for Mitigating Potential Impacts on Sea Turtles During Seismic Surveys." In SPE International Conference and Exhibition on Health, Safety, Security, Environment, and Social Responsibility. Society of Petroleum Engineers, 2016. http://dx.doi.org/10.2118/179215-ms.

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Rovetto, Carlos, Edmanuel Cruz, Eric Flores, Ivone Nuñez, Kexy Rodriguez, and Elia Cano. "Behavioral data analysis of sea turtles from the Pacific coast of Panama, using biotelemetry." In 2023 VI Congreso Internacional en Inteligencia Ambiental, Ingeniería de Software y Salud Electrónica y Móvil (AmITIC). IEEE, 2023. http://dx.doi.org/10.1109/amitic60194.2023.10366354.

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Cirelli, Gianluca, Annachiara Pisto, Francesca Ardolino, Antonio Colucci, Erika Ottone, Francesca Catucci, Nicola Tragni, and Vincenzo Aquaro. "Distribution and causes of sea turtles stranding on the Ionian coast of Calabria, Apulia and Basilicata." In 2018 IEEE International Workshop on Metrology for the Sea; Learning to Measure Sea Health Parameters (MetroSea). IEEE, 2018. http://dx.doi.org/10.1109/metrosea.2018.8657886.

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Almpanidou, Vasiliki, Anastasia Chatzimentor, Vasiliki Tsapalou, and Antonios Mazaris. "Investigating the distribution of foraging sites of loggerhead sea turtles, <em>Caretta caretta</em>, in the Mediterranean Sea." In 1st International Electronic Conference on Biological Diversity, Ecology and Evolution. Basel, Switzerland: MDPI, 2021. http://dx.doi.org/10.3390/bdee2021-09423.

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Murad, Nour Mohammad, Loic Guegan, and Sylvain Bonhommeau. "Why satellite localization beacons are not adapted for marine turtles' study: A sea wireless sensors network solution." In 2017 Global Information Infrastructure and Networking Symposium (GIIS). IEEE, 2017. http://dx.doi.org/10.1109/giis.2017.8169808.

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Reports on the topic "Sea turtles"

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Welp, Timothy, Matthew Balazik, Benjamin Emery, Dena Dickerson, and Phillip Bates. Pilot project using tickler chains in lieu of deflectors at Fire Island Inlet to Moriches Inlet, New York, borrow sites. Engineer Research and Development Center (U.S.), March 2024. http://dx.doi.org/10.21079/11681/48336.

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Risk for incidental take of sea turtles and sturgeon exists during hopper dredging operations throughout turtle and sturgeon habitats. Since 1992, draghead deflectors have been the main engineering tool used to minimize incidental hopper dredging takes of sea turtles and are also thought to reduce the chance of sturgeon impingement or entrainment. Although reduced, turtle takes still happen annually, and the draghead deflectors reduce dredging productivity, increase fuel usage, and increase costs of operations. As such, there remains a need to research alternative turtle avoidance measures. The non-US dredging industry has used various versions of an engineering control called tickler chains (TC) in lieu of deflectors. If effective, TC could lower dredging costs and increase production in comparison to deflectors. This technical report describes a pilot study where TC were used in lieu of deflectors at Fire Island Inlet, New Y0rk. To the authors’ knowledge, this is the first time since the early 1990s that hopper-dredging has occurred without draghead deflectors along the east coast. No takes were recorded during the pilot study; however, no research was done to determine if sea turtles or sturgeon interacted with the TC. Recommendations for future TC research are provided in this technical report.
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Reine, Kevin. A literature review of beach nourishment impacts on marine turtles. Engineer Research and Development Center (U.S.), March 2022. http://dx.doi.org/10.21079/11681/43829.

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This Technical Report was developed by the U. S. Army Engineer Research and Development Center-Environmental Laboratory (ERDC-EL), to summarize the known impacts to nesting sea turtles along the Atlantic and Gulf Coasts resulting from beach nourishment. The U.S. Army Corps of Engineers (USACE) is responsible for maintaining the nation’s infrastructure to include ports and harbors through dredging of Federal navigation channels as well as shoreline stabilization. Shoreline stabilization through beach nourishment activities can provide opportunities for reductions in storm surge, flood control, and provide opportunities for residential growth, recreational activities, and coastal habitat restoration (Guilfoyle et al. 2019). Beach nourishment is an effective method for protection and enhancement of coastal development projects but may have detrimental impacts on marine life (e.g., nesting sea turtles and shorebirds). The objective of this Technical Report is to examine all elements of the beach nourishment process to include, active beach construction, entrainment of marine turtles in hopper dredges, beach protection and hard structures, beach profile features, compaction and shear resistance, artificial lighting, marine turtle nest relocation, and nesting habitat factors. Recommendations for mitigating and minimizing these impacts are provided.
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Christopher Pincetich, Ph.D., Christopher Pincetich, Ph D. Is Plastic a Chronic Killer? Calculating the Toxicity of Plastic Ingestion to Sea Turtles. Experiment, January 2014. http://dx.doi.org/10.18258/1955.

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Hulton, Peter H., Carroll A. Ciminello, Roy Deavenport, Thomas Fetherston, Karin Fulkerson, Dennis Jarvis, Bert Neales, Jerry Thibodeaux, Jason Benda-Joubert, and Amy Farak. Determination of Acoustic Effects on Marine Mammals and Sea Turtles for the Hawaii-Southern California Training and Testing Environmental Impact Statement/Overseas Environmental Impact Statement. Fort Belvoir, VA: Defense Technical Information Center, August 2013. http://dx.doi.org/10.21236/ada589838.

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Pugh, Rebecca S., and Paul R. Becker. Sea turtle contaminants:. Gaithersburg, MD: National Institute of Standards and Technology, 2001. http://dx.doi.org/10.6028/nist.ir.6700.

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Ketten, Darlene R., and Soraya M. Bartol. Functional Measures of Sea Turtle Hearing. Fort Belvoir, VA: Defense Technical Information Center, September 2005. http://dx.doi.org/10.21236/ada446809.

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Mattie Jean Whitesell, Mattie Jean Whitesell. What impacts loggerhead sea turtle hatch success? Experiment, October 2017. http://dx.doi.org/10.18258/10044.

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Keller, Jennifer M., Rebecca S. Pugh, and Paul R. Becker. Biological and Environmental Monitoring and Archival of Sea Turtle Tissues (BEMAST): Rationale, Protocols, and Initial Collections of Banked Sea Turtle Tissues. National Institute of Standards and Technology, April 2014. http://dx.doi.org/10.6028/nist.ir.7996.

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Francklin Barbier, Francklin Barbier. Understanding the migration routes of Haiti's endangered sea turtle populations. Experiment, April 2023. http://dx.doi.org/10.18258/49730.

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Hayden, Linda, and Keisha Harrison. Sea Surface Temperature Serving as Determining Factors for Sea Turtle Locations in the Atlantic Ocean. Fort Belvoir, VA: Defense Technical Information Center, September 2002. http://dx.doi.org/10.21236/ada626302.

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