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

Jérôme Bourjea

doi:10.15468/rus7su

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

Citation

Bourjea J, OBIS-SEAMAP (2021). IFREMER/Kélonia satellite tracked late juvenile loggerhead sea turtles from Réunion Island 2008-2012. OBIS-SEAMAP. Occurrence dataset https://doi.org/10.15468/rus7su accessed via GBIF.org on 2025-05-18.

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

Purpose

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

Sampling Description

Study Extent

NA

Sampling

NA

Method steps

NA

Additional info

marine, harvested by iOBIS

Taxonomic Coverages

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

Caretta caretta
common name: Loggerhead Sea Turtle rank: species

Geographic Coverages

Reunion Island,Oman,South-Africa

Bibliographic Citations

Contacts

Jérôme Bourjea
originator
position: Primary contact
IFREMER
email: jerome.bourjea@ifremer.fr
homepage: http://www.ifremer.fr/lareunion

OBIS-SEAMAP
metadata author
Marine Geospatial Ecology Lab, Duke University
A328 LSRC building
Durham
27708
NC
US
email: seamap-contact@duke.edu
homepage: http://seamap.env.duke.edu

OBIS-SEAMAP
distributor
Marine Geospatial Ecology Lab, Duke University
A328 LSRC building
Durham
27708
NC
US
email: seamap-contact@duke.edu
homepage: http://seamap.env.duke.edu

Jérôme Bourjea
owner
position: Primary contact
IFREMER
email: jerome.bourjea@ifremer.fr
homepage: http://www.ifremer.fr/lareunion

Jérôme Bourjea
administrative point of contact
position: Primary contact
IFREMER
email: jerome.bourjea@ifremer.fr
homepage: http://www.ifremer.fr/lareunion