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Gabon 2008-09: Mayumba & Pongara, Leatherback Turtles
MTRG / Seaturtle.org
Dataset credit
Data provider Marine Turtle Research Group Originating data center Satellite Tracking and Analysis Tool (STAT)Project partner In conjunction with Parc National de Mayumba, the Wildlife Conservation Society, the Gabon Turtle Partnership, Aventures Sans Frontieres and Seaturtle.org, researchers from the University of Exeter have attached satellite transmitters to female leatherback turtles nesting at Mayumba National Park, Gabon . Project sponsor or sponsor description The first season of this project (2005/2006) was part funded by the European Association of Zoos and Aquaria (EAZA) Shellshock Campaign European Association of Zoos & Aquaria. Satellite transmitters attached in the 2007 and 2008 nesting seasons have been funded by the Large Pelagics Research Centre (University of New Hampshire) through National Oceanographic and Atmospheric Agency award NA04NMF4550391. Earlier phases of this project were made possible by funding receieved from the Natural Environment Research Council, UK . Work of the Gabon Turtle Partnership is supported by funding from the Marine Turtle Conservation Fund, through the US Fish & Wildlife Service
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Contacts
| Role | Name | Organization | |
| Primary contact |
Matthew Witt |
University of Exeter |
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| Data entry |
Michael Coyne |
seaturtle.org |
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Citation
Witt M. 2025. Gabon 2008-09: Mayumba & Pongara, Leatherback Turtles. Version 1.0.0. Dataset published in OBIS-SEAMAP and originated from Satellite Tracking and Analysis Tool (STAT; http://www.seaturtle.org/tracking/index.shtml?project_id=340). https://doi.org/10.82144/b16eb1db. Halpin, P.N., A.J. Read, E. Fujioka, B.D. Best, B. Donnelly, L.J. Hazen, C. Kot, K. Urian, E. LaBrecque, A. Dimatteo, J. Cleary, C. Good, L.B. Crowder, and K.D. Hyrenbach. 2009. OBIS-SEAMAP: The world data center for marine mammal, sea bird, and sea turtle distributions. Oceanography. 22(2):104-115.
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Abstract
This seasons fieldwork (2008-09) has focused on gathering information on leatherback turtle internesting and postnesting movements from two sites in Gabon. Six transmitters were attached to leatherback turtles nesting in Pongara National Park in December 2008. This park is very close to Libreville, the Capital of Gabon, and receives many visitors during the weekends and holidays periods. A further 4 satellite transmitters were deployed in February 2009 in Mayumba National Park.
The turtles and their transmitters are performing excellently this season.
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Purpose
N/A
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Supplemental information
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Change History
The dataset has been updated over time as outlined below. Each entry includes the version number, release date, type of change, and a short description.
- 1.0.0 (2016-12-27) - Initial
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References
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Attributes
Overview
Attributes are defined by seaturtle.org.
Attributes described below represent those in the original dataset provided by the provider.
Only minimum required attributes are visible and downloadable online. Other attributes may be obtained upon provider's permission.
Attributes in dataset
| Attribute (table column) | Description |
| oid | Unique ID number (generated by OBIS-SEAMAP) |
| sort | Internal use |
| uid | Unique ID assigned by STAT |
| prognum | Program number |
| tag_id | PTT ID |
| utc | Date and time in UTC |
| lc | Location class |
| iq | Quality indicator |
| lat1 | Latitude in decimal degrees |
| dir1 | Dir 1 |
| lon1 | Longitude in decimal degrees |
| dir2 | Dir 2 |
| lat2 | |
| dir3 | Dir 3 |
| lon2 | |
| dir4 | Dir 4 |
| nb_mes | Number of messages received |
| big_nb_mes | |
| best_level | Best signal strength in dB |
| pass_duration | Pass duration in seconds |
| nopc | Number Of Plausibility Checks successful (from 0-4) |
| calcul_freq | Calculated frequency |
| altitude | Altitude used for location calculation |
| sensors | Sensors |
| species | Species name |
| tsn | ITIS Taxonomic Serial Number added by OBIS-SEAMAP |
| timestamp | Numeric timestamp |
| project_id | STAT Project ID |
| lc_filter | Parameters to location filtering |
| speed_filter | Parameters to speed filtering |
| distance_filter | Parameters to distance filtering |
| topo_filter | Parameters to topo filtering |
| time_filter | Parameters to time filtering |
| angle_filter | Parameters to angle filtering |
| life_stage | Life stage of the animal |
| gender | Gender of the animal |
| wetdry | Wet or dry |
| wetdry_filter | Parameters to Wet or dry filterint |
| obs_datetime | Date and time (local time zone) |
| timezone_h | Time difference from UTC |
| dataset_id | Dataset ID by OBIS-SEAMAP |
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| OBIS-SEAMAP ID | 1454 |
| DOI | 10.82144/b16eb1db |
| Version | 1.0.0 |
| Seabirds | 0 |
| Marine mammals | 0 |
| Sea turtles | 7,937 |
| Rays and sharks | 0 |
| Other species | 0 |
| Non spatial | 0 |
| Non species | 0 |
| Total | 7,937 |
| Date, Begin | 2008-12-09 |
| Date, End | 2010-01-01 |
| Temporal prec. | 111111 |
| Latitude | -40.63 - 1.81 |
| Longitude | -54.04 - 21.22 |
| Coord. prec. | 3 decimal digits |
| Platform | Tag |
| Data type | Telemetry location |
| Tracklines | YES (ID: 1455) |
| Traveled (km) | 84,285 |
| Travel hours | 49,798 |
| Registered | 2016-12-27 |
| Updated | 2025-08-29 |
| Status | Published |
Sharing policy |
Permission required |
| Sub group(s) | STAT |
| Shared with |
GBIF*
OBIS* * Aggregated summary |
| Metadata in static HTML / FGDC / EML |
| See download history / statistics |
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