Study of the Biology of Sea Turtles in Brazil through Satellite Telemetry

Data provider
Projeto Tamar-Ibama
Originating data center
Satellite Tracking and Analysis Tool (STAT)
Project sponsor or sponsor description
This work was possible as a result of the financial support of Petrobras/Cenpes (Petrobras Research Center).

The project entitled Study of the Biology of Sea Turtles in Brazil of through Satellite Telemetry is part of the larger research program entitled Priority Research Studies on the Biology of the Sea Turtles, developed by Project TAMAR-IBAMA with the support of the Petrobras/Cenpes (Petrobras Research Center). The objective of this project is to use satellite telemetry to study and analyze the at-sea movements of female turtles, both during and following the nesting season, for the most threatened species that occur along the Brazilian coast (Caretta caretta, Dermochelys coriacea, Eretmochelys imbricata and Lepdochelys olivacea). The project will involve the deployment of 40 satellite tags: 15 on hawksbill turtles, 5 on leatherback turtles, 10 on loggerhead turtles and 10 on olive ridley turtles. The project officially began on February 02nd, 2005 when 15 satellite tags (KiwiSat 101 from Sirtrack Limited) were attached to the carapaces of hawksbill turtles that had just finished nesting on beaches along the northern coast of Bahia, Brazil. In continuity to this Study, 03 transmitters KiwiSat 101(with capacity to work for up to 450 days) were installed in females of the species Dermochelys coriacea (leatherback sea turtle) in Espirito Santo, only reproductive area of this species in the Brazilian coast. The last species that received transmitters was the Caretta caretta (loggerhead sea turtle), in the coast of Bahia, and Lepidochelys olivacea (olive ridley sea turtle), in the north coast of Sergipe, in the February of 2006. For further information on Projeto Tamar-Ibama history, sea turtle biology and the Satellite Telemetry Program, with updated maps on recent and past studies, visit our webpage, www.projetotamar.org.br, and learn more about the conservation of sea turtles in Brazil.

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Visit STAT's project page for additional information.

Overview

This section explains attributes included in the original dataset. OBIS-SEAMAP restricts the attributes available to the public to date/time, lat/lon and species names/counts only. Should you need other attributes described here, you are encouraged to contact the data provider.

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
prognum	Program number
tag_id	PTT ID
lc	Location class
iq	Quality indicator
dir1	Dir 1
nb_mes	Number of messages received
big_nb_mes	definition not provided
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
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