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  • 1
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    Unknown
    Simulation of leatherback turtle hatchling dispersion patterns in the Gulf of Guinea (2017)
    PANGAEA
    In:  Supplement to: Scott, Rebecca; Biastoch, Arne; Agamboue, Pierre D; Bayer, Till; Boussamba, Francois L; Formia, Angela; Godley, Brendan J; Mabert, Brice D K; Manfoumbi, Jean C; Schwarzkopf, Franziska; Sounguet, Guy-Philippe; Wagner, Patrick; Witt, Matthew J (2017): Spatio-temporal variation in ocean current-driven hatchling dispersion: Implications for the world's largest leatherback sea turtle nesting region. Diversity and Distributions, https://doi.org/10.1111/ddi.12554
    Details
    Publication Date: 2023-10-28
    Description: This data set describes the location of virtual floats representing turtle hatchlings throughout 60 modeled years. Floats were constrained to remain within depths of 0-6 m due to the positive buoyancy of hatchlings. Floats were first assigned to one of 20,000 random release locations within a large release area 125-400 km offshore from nesting beaches throughout the Republic/Democratic Republic of the Congo, Gabon and Equatorial Guinea spanning latitudes of c. 6°S to 3.5°N. For each month over the 4-month long hatching season (January-April), each of the 20,000 floats was assigned a random release day and drift simulations ran every year during the period 1960-2007 resulting in drift trajectories of approx. 4 million virtual floats. See Scott et al., 2017, Spatio-temporal variation in ocean current-driven hatchling dispersion: Implications for the world's largest leatherback sea turtle nesting region. Diversity Distrib, http://dx.doi.org/10.1111%2Fddi.12554 for details as to the model parameters. Each data set consists of data on the float ID (number 1,2,3 etc..) and its trajectory attributes (latitude/longitude) at each time step. Data are also provided on the temperature, salinity and density of the float at its respective position/time step. Data sets are sorted by float release date, and contain one data file for each year. Each data file has 11 columns, which contain the following data: float id, longitude, latitude, depth, time step, temperature, salinity, density, no time steps since start, distance to start point, bearing from start point
    Keywords: Climate - Biogeochemistry Interactions in the Tropical Ocean; File content; File format; File name; File size; Model; Sea-turtle_model; SFB754; Uniform resource locator/link to model result file
    Type: Dataset
    Format: text/tab-separated-values, 60 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Global inventory of published marine turtle stable isotope studies (2018)
    PANGAEA
    In:  University of Exeter
    Details
    Publication Date: 2024-02-24
    Description: This dataset includes an inventory of all published marine turtle stable isotope studies to help inform ecology and conservation research. We conducted an extensive literature search in Scopus, Web of Science, and Google Scholar in June 2018. All peer-reviewed primary research papers were included in the analysis excluding fossil isotope studies. The inventory provides information on each publication. Version number: v1.3 Submission date stamp: 2019-03-21 Contact email: Julia.haywood@exeter.ac.uk
    Type: Dataset
    Format: application/zip, 92.3 kBytes
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Polymers identified in loggerhead turtles (Carretta caretta) stranded or bycaught in North Cyprus, eastern Mediterranean (2024)
    PANGAEA
    Details
    Publication Date: 2024-02-24
    Description: Observations of investigations for plastic ingestion in loggerhead turtles (Caretta caretta), stranded or bycaught on the coastline of North Cyprus (Eastern Mediterranean). A total of 135 loggerhead turtles were sampled spanning a period of 11 years (2012-2022). During necropsy, the entire gastrointestinal tract was removed and initial contents weighed. The contents were grossly examined then rinsed through a 1 mm mesh sieve to separate and remove the plastic for classification and dietary items for storage and analysis. Ingested plastic was classified using a system outlined in Duncan et al. (2019, doi:10.1038/s41598-019-48086-4; 2021, doi:10.3389/fmars.2021.699521) which builds upon the Fulmar Protocol and MSFD (Marine Strategy Framework Directive) Marine Litter Report 2011 (Descriptor 10) toolkits (Galgani et al., 2014, doi:10.1016/j.marenvres.2014.02.003; van Franeker et al., 2011, doi:10.1016/j.envpol.2011.06.008).
    Keywords: bioindicators; Curved carapace length; DATE/TIME; Fourier transform infrared spectroscopy (FTIR); Marine Debris; marine turtles; Nylon; Plastic litter; Plastic pollution; Polyamide; Polydimethylsiloxane; Polyethylene; Polyhexanide; Polyisoprene chlorinated; Polymethylmethacrylat; Polypropylene; Polystyrene; Polyundecanoamide; Polyvinyl chloride
    Type: Dataset
    Format: text/tab-separated-values, 408 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    Macroplastic ingestion in loggerhead turtles (Carretta caretta) stranded or bycaught in North Cyprus, eastern Mediterranean (2024)
    PANGAEA
    Details
    Publication Date: 2024-02-24
    Description: Observations of investigations for plastic ingestion in loggerhead turtles (Caretta caretta), stranded or bycaught on the coastline of North Cyprus (Eastern Mediterranean). A total of 135 loggerhead turtles were sampled spanning a period of 11 years (2012-2022). During necropsy, the entire gastrointestinal tract was removed and initial contents weighed. The contents were grossly examined then rinsed through a 1 mm mesh sieve to separate and remove the plastic for classification and dietary items for storage and analysis. Ingested plastic was classified using a system outlined in Duncan et al. (2019, doi:10.1038/s41598-019-48086-4; 2021, doi:10.3389/fmars.2021.699521) which builds upon the Fulmar Protocol and MSFD (Marine Strategy Framework Directive) Marine Litter Report 2011 (Descriptor 10) toolkits (Galgani et al., 2014, doi:10.1016/j.marenvres.2014.02.003; van Franeker et al., 2011, doi:10.1016/j.envpol.2011.06.008).
    Keywords: Alagadi; Aphrendrika; Aphrodite Beach; Ayphilon; Bafra Turizm Bolgesi; Bedis Beach; bioindicators; Biological sample; BIOS; Bogaz; Bogaz Beach; Bogaz Harbour; Caesar Beach; Caesar Resort, Bogaz; Carretta_caretta_1; Carretta_caretta_10; Carretta_caretta_100; Carretta_caretta_101; Carretta_caretta_102; Carretta_caretta_103; Carretta_caretta_104; Carretta_caretta_105; Carretta_caretta_106; Carretta_caretta_107; Carretta_caretta_108; Carretta_caretta_109; Carretta_caretta_11; Carretta_caretta_110; Carretta_caretta_111; Carretta_caretta_112; Carretta_caretta_113; Carretta_caretta_114; Carretta_caretta_115; Carretta_caretta_116; Carretta_caretta_117; Carretta_caretta_118; Carretta_caretta_119; Carretta_caretta_12; Carretta_caretta_120; Carretta_caretta_121; Carretta_caretta_122; Carretta_caretta_123; Carretta_caretta_124; Carretta_caretta_13; Carretta_caretta_14; Carretta_caretta_15; Carretta_caretta_16; Carretta_caretta_17; Carretta_caretta_18; Carretta_caretta_19; Carretta_caretta_2; Carretta_caretta_20; Carretta_caretta_21; Carretta_caretta_22; Carretta_caretta_23; Carretta_caretta_24; Carretta_caretta_25; Carretta_caretta_26; Carretta_caretta_27; Carretta_caretta_28; Carretta_caretta_29; Carretta_caretta_3; Carretta_caretta_30; Carretta_caretta_31; Carretta_caretta_32; Carretta_caretta_33; Carretta_caretta_34; Carretta_caretta_35; Carretta_caretta_36; Carretta_caretta_37; Carretta_caretta_38; Carretta_caretta_39; Carretta_caretta_4; Carretta_caretta_40; Carretta_caretta_41; Carretta_caretta_42; Carretta_caretta_43; Carretta_caretta_44; Carretta_caretta_45; Carretta_caretta_46; Carretta_caretta_47; Carretta_caretta_48; Carretta_caretta_49; Carretta_caretta_5; Carretta_caretta_50; Carretta_caretta_51; Carretta_caretta_52; Carretta_caretta_53; Carretta_caretta_54; Carretta_caretta_55; Carretta_caretta_56; Carretta_caretta_57; Carretta_caretta_58; Carretta_caretta_59; Carretta_caretta_6; Carretta_caretta_60; Carretta_caretta_61; Carretta_caretta_62; Carretta_caretta_63; Carretta_caretta_64; Carretta_caretta_65; Carretta_caretta_66; Carretta_caretta_67; Carretta_caretta_68; Carretta_caretta_69; Carretta_caretta_7; Carretta_caretta_70; Carretta_caretta_71; Carretta_caretta_72; Carretta_caretta_73; Carretta_caretta_74; Carretta_caretta_75; Carretta_caretta_76; Carretta_caretta_77; Carretta_caretta_78; Carretta_caretta_79; Carretta_caretta_8; Carretta_caretta_80; Carretta_caretta_81; Carretta_caretta_82; Carretta_caretta_83; Carretta_caretta_84; Carretta_caretta_85; Carretta_caretta_86; Carretta_caretta_87; Carretta_caretta_88; Carretta_caretta_89; Carretta_caretta_9; Carretta_caretta_90; Carretta_caretta_91; Carretta_caretta_92; Carretta_caretta_93; Carretta_caretta_94; Carretta_caretta_95; Carretta_caretta_96; Carretta_caretta_97; Carretta_caretta_98; Carretta_caretta_99; Catalkoy-Koyet Restoran; Comment; Counted; Curved carapace length; Cyprus; DATE/TIME; Deniz Hotel; Description; Dipkarpaz; Dokuz Evler; Dried and weighted; Erenkoy Municipality; Escape Beach; Esentepe Harbour; Event label; Famagusta; Famagusta, Venus Beach; Famagusta Crystal Rocks; Famagusta harbour; Famagusta Harbour; Famagusta Sezar; Gaziveren; GeceKusununYeri; Gemikonak; Girne Harbour; Glapsides; Golden Beach; Guzelyali; Harbour Bogaz; Iskele; Iskele/Longbeach; Iskele Bogaz; Iskele Picnic Site; Istanbul Beach; Kaplica; Karpaz; Karpaz, off Zafer Burnu; Karsiyaka; Kervansaray; Kocareis; KocareisKaravanKamp; Kyrenia, off Zafer Burnu; Kyrenia, Yeni Erankoy; Kyrenia Harbour; Lapta; Lapta/Karsaka; Lapta Harbour; LATITUDE; Lokum Restaurant; Long Beach; Long Beach, Famagusta; Long Beach Resort, Iskele; LONGITUDE; Mackenzie Beach; Magusa; Magusa Bogaz; Magusa Harbour; Marine Debris; marine turtles; Monster Beach; Monster North; Monster South; Ozankoy; Palm Beach; Palm Beach, Famagusta; Plastic, dry mas; Plastic, ingested; Plastic, length; Plastic litter; Plastic particles; Plastic particles, color; Plastic particles, type; Plastic pollution; Ronnas Bay; Ruler tape; Salamis Bay Hotel; Section; See description in dataset comment; Sex; Site; Tatlisu Belediyesi; Tatlisu Harbour; Thalassa beach; Venus Beach; West 2; Yeni Erankoy Harbour; YeniErenkoy; Yeni Erenkoy; Yeni Erenkoy Harbour; Yesilyurt; Zaradise Garden
    Type: Dataset
    Format: text/tab-separated-values, 2199 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
    Electronic Resource
    Electronic Resource
    Climate change and sea turtles: a 150-year reconstruction of incubation temperatures at a major marine turtle rookery (2003)
    Oxford, UK : Blackwell Science Ltd
    Global change biology 9 (2003), S. 0 
    Details
    ISSN: 1365-2486
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Geography
    Notes: Sea turtles show temperature dependent sex determination. Using an empirical relationship between sand and air temperature, we reconstructed the nest temperatures since 1855 at Ascension Island, a major green turtle (Chelonia mydas) rookery. Our results show that inter-beach thermal variations, previously ascribed to the albedo of the sand, which varies hugely from one beach to another, have persisted for the last century. Reconstructed nest temperatures varied by only 0.5 °C on individual beaches over the course of the nesting season, while the temperature difference between two key nesting beaches was always around 3 °C. Hence inter-beach thermal variations are the main factor causing a large range of incubation temperatures at this rookery. There was a general warming trend for nests, with a mean increase in reconstructed nest temperatures for different months of between 0.36 and 0.49 °C for the last 100 years.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2486.2003.00606.x
    Location Call Number Limitation Availability
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    Paper (German National Licenses)
    Fulltext
  • 6
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    Spatio-temporal variation in ocean current-driven hatchling dispersion: Implications for the world's largest leatherback sea turtle nesting region (2017)
    Wiley
    In:  Diversity and Distributions, 23 (6). pp. 604-614.
    Details
    Publication Date: 2020-02-06
    Description: Aim: The lives of juvenile leatherback turtles are amongst the most enigmatic of all marine mega-vertebrates. For these cryptic organisms, ocean models provide important insights into their dispersion from natal sites. Here, corroborated by fisheries bycatch data, we simulate spatio-temporal variation in hatchling dispersion patterns over five decades from the World's largest leatherback turtle nesting region. Location: Equatorial Central West Africa (3.5°N to −6°S) spanning the Gulf of Guinea in the North, Gabon and the Republic/Democratic Republic of the Congo in the South. Results: Due to dynamic oceanic conditions at these equatorial latitudes, dispersion scenarios differed significantly: (1) along the north to south gradient of the study region, (2) seasonally and (3) between years. From rookeries to the north of the equator, simulated hatchling retention rates within the Gulf of Guinea were very high (〉99%) after 6 months of drift, whilst south of the equator, retention rates were as low as c. 6% with the majority of simulated hatchlings dispersing west into the South Atlantic Ocean with the South Equatorial Current. Seasonal dispersion variability was driven by wind changes arising from the yearly north/southward migration of the intertropical convergence zone resulting in the increasing westerly dispersion of hatchlings throughout the hatching season. Annual variability in wind stress drove a long-term trend for decreased retention within the Gulf of Guinea and increased westerly dispersion into habitats in the South Atlantic Ocean. Main conclusions: Shifts in dispersion habitats arising from spatio-temporal oceanic variability expose hatchlings to different environments and threats that will influence important life history attributes such as juvenile growth/survival rates; anticipated to impact the population dynamics and size/age structure of populations into adulthood. The impacts of local and dynamic oceanic conditions thus require careful considerations, such as subregional management, when managing marine populations of conservation concern.
    Type: Article , PeerReviewed
    Format: text
    Format: text
    DOI: 10.1111/ddi.12554
    Location Call Number Limitation Availability
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    OceanRep: Article in a Scientific Journal - peer-reviewed
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