Cape Verde (Cabo Verde) 2004: Loggerhead Turtles

Marine Turtle Research Group / SEATURTLE.ORG

Dataset credit

Data provider
Marine Turtle Research Group
Originating data center
Satellite Tracking and Analysis Tool (STAT)
Project partner
This satellite tracking project is a collaboration among the Cape Verde Instituto Nacional Desenvolvimento Das Pescas (Sonia Merino, Vito Melo), the Marine Turtle Research Group (Brendan Godley, Annette Broderick, Lucy Hawkes), SEATURTLE.ORG (Michael Coyne, Matthew Godfrey) and the Universidad Las Palmas, Canary Islands (Luis Felipe Lopez Jurado, Nuria Varo, Pedro Lopez-Suarez, Daniel Cejudo). The ongoing turtle monitoring and conservation project is being supported by Hydrocarpo, an Interreg IIIB project (UE) ; a Canarian and Cape Verde Government
initiative implemented by the Cape Verde Instituto Nacional Desenvolvimento Las Pescas and the Instituto Canario de Ciencias Marinas , Canary islands (Spain).
Noting the regional importance of this work, WWF-WARPO are working with project partners to help the project disseminate its findings to maximum effect.
Project sponsor or sponsor description
This project was funded by generous grants from the British Chelonia Group, the Marine Conservation Society, the Natural Environmental Research Council, the Peoples Trust for Endangered Species, and SeaWorld Busch Gardens.


Primary contact Brendan Godley Marine Turtle Research Group
Data entry Michael Coyne



The Cape Verde archipelago, 500km off the West Coast of Africa, hosts one of the worlds largest nesting colonies of the loggerhead sea turtle (Caretta caretta). Although marine turtles have been recorded at Cape Verde as early as 1479 (when the French explorer Eustache de la Fosse reported that sea turtles could be used by humans for medicinal and nutritional purposes), it was not until 1998 that Project Natura 2000 began comprehensive studies to assess the status, distribution and abundance of marine turtles in the Cape Verde archipelago. To date, 3,377 loggerhead turtles have been tagged on the beaches of Boavista, just one of the 15 islands and islets of the Republic of Cape Verde. Boavista is known to host the largest number of nesting turtles in the archipelago although the number of turtles is thought to have been declining since the start of surveys due to threats by human predation.
The nesting population of Cape Verde has been identified as a priority for conservation along the West Coast of Africa and more information needs to be collected on its natural history, including migratory pathways and foraging areas. This study will investigate these post nesting migratory pathways and foraging grounds and describe diving and depth utilisation patterns.
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Supplemental information

Visit STAT's project page for additional information.




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
prognumProgram number
tag_idPTT ID
lcLocation class
iqQuality indicator
dir1Dir 1
nb_mesNumber of messages received
big_nb_mesdefinition not provided
best_levelBest signal strength in dB
pass_durationPass duration in seconds
nopcNumber Of Plausibility Checks successful (from 0-4)
calcul_freqCalculated frequency
altitudeAltitude used for location calculation
speciesSpecies name
project_idSTAT Project ID
lc_filterParameters to location filtering
speed_filterParameters to speed filtering
distance_filterParameters to distance filtering
topo_filterParameters to topo filtering
time_filterParameters to time filtering
angle_filterParameters to angle filtering
life_stageLife stage of the animal
genderGender of the animal
wetdryWet or dry
wetdry_filterParameters to Wet or dry filterint
obs_datetimeDate and time (local time zone)
timezone_hTime difference from UTC
Marine mammals0
Sea turtles3,039
Rays and sharks0
Other species0
Non spatial0
Non species0
Date, Begin2004-07-28
Date, End2006-03-27
Temporal prec.111111
Latitude7.87 - 19.08
Longitude-25.47 - -12.78
Coord. prec.3 decimal digits
Data typeTelemetry location
TracklinesYES (ID: 370)
Traveled (km)41,773
Travel hours52,896
Contr. throughSatellite Tracking and Analysis Tool
Sharing policy Permission required
Shared with SWOT
GBIF (via DOI)*
* Aggregated summary
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See metadata in FGDC XML
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