IFREMER/Kélonia satellite tracked late juvenile loggerhead sea turtles from Réunion Island 2008-2012

Occurrence Observation
Latest version published by OBIS-SEAMAP on Oct 8, 2025 OBIS-SEAMAP

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Data as a DwC-A file download 20,139 records in English (2 MB) - Update frequency: not planned
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Description

Original provider: IFREMER and Kélonia Dataset credits: Institut Français pour L'Exploitation de la Mer (IFREMER) and Kélonia Abstract: A satellite tracking study was conducted on juvenile loggerhead sea turtles in the Indian Ocean. Eighteen individuals were fitted with transponders and tracked from Réunion Island (21.2°S, 55.3°E) in order to investigate movements and diving patterns. Nine turtles swam north towards Oman (20.5°N, 58.8°E), where one of the world’s largest rookeries of loggerheads is located. Three individuals travelled south towards South-Africa and Madagascar, countries that also host loggerhead nesting grounds. Fourteen of the transmitters relayed diving profiles. A dichotomy between diurnal and nocturnal diving behavior was observed. A greater number of shorter dives occurred during the day. Diving behavior also differed according to movement behavior as individuals spent more time in subsurface waters (<10 m) during transit phases. The study provides an improved understanding of the oceanic movements and diving behavior of juvenile loggerheads. The results address a significant gap in the understanding of loggerhead oceanic movements and may help with the conservation of the species.

Data Records

The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 20,139 records.

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

Versions

The table below shows only published versions of the resource that are publicly accessible.

How to cite

Researchers should cite this work as follows:

Bourjea, J. 2014. IFREMER/Kélonia satellite tracked late juvenile loggerhead sea turtles from Réunion Island 2008-2012. Version 1.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/a6d70b9a.

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is OBIS-SEAMAP. This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC 4.0) License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: 66cc4704-24c5-469b-8490-f726141c996d.  OBIS-SEAMAP publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Ocean Biodiversity Information System.

Keywords

Marine Biology; Telemetry; Tagged animal; Radio transmitters; Animal movements; late juvenile; loggerheads; Occurrence; Observation

External data

The resource data is also available in other formats

OBIS-SEAMAP Dataset Page https://seamap.env.duke.edu/dataset/1014 UTF-8 Interactive map
FGDC Metadata https://seamap.env.duke.edu/dataset/1014/fgdc UTF-8 XML
EML Metadata https://seamap.env.duke.edu/dataset/1014/eml UTF-8 XML

Contacts

Jérôme Bourjea
  • Owner
  • Originator
  • Point Of Contact
  • Primary contact
OBIS-SEAMAP
  • Metadata Provider
  • Distributor
Marine Geospatial Ecology Lab, Duke University
  • A328 LSRC building
27708 Durham
NC
US

Geographic Coverage

Oceans,Reunion Island,Oman,South-Africa

Bounding Coordinates South West [-41.302, 18.974], North East [20.151, 67.841]

Taxonomic Coverage

Scientific names are based on the Integrated Taxonomic Information System (ITIS).

Species Caretta caretta (Loggerhead sea turtle)

Temporal Coverage

Start Date / End Date 2008-10-06 / 2012-12-14

Project Data

No Description available

Title IFREMER/Kélonia satellite tracked late juvenile loggerhead sea turtles from Réunion Island 2008-2012
Funding NA

The personnel involved in the project:

Jérôme Bourjea
  • Owner

Sampling Methods

NA

Study Extent NA

Method step description:

  1. NA

Collection Data

Collection Name zd_1014
Collection Identifier zd_1014
Parent Collection Identifier OBIS-SEAMAP

Bibliographic Citations

  1. Dalleau, M., S. Benhamou, J. Sudre, S. Ciccione and J. Bourjea. 2014. Movement and diving behavior of late juvenile loggerhead sea turtles (Caretta caretta) in the Western Indian Ocean. Marine Biology: 161: 1835-1849. http://link.springer.com/article/10.1007/s00227-014-2465-z

Additional Metadata

marine, harvested by iOBIS.

Purpose

The purpose was to study the movement and diving behavior of late juvenile loggerheads in the western Indian Ocean.

Alternative Identifiers https://doi.org/10.82144/a6d70b9a
https://seamap.env.duke.edu/dataset/1014
https://www.gbif.org/dataset/66cc4704-24c5-469b-8490-f726141c996d
https://obis.org/dataset/7687b242-05b7-48d7-a316-ba6dc34e72b5
66cc4704-24c5-469b-8490-f726141c996d
https://ipt.env.duke.edu/resource?r=zd_1014