Loggerheads in the Tyrrhenian Sea

Paolo Luschi

Dataset credit

Data provider
Islameta Group, Dept. of Biology - University of Pisa
Originating data center
Satellite Tracking and Analysis Tool (STAT)
Project partner
Centro Recupero Tartarughe Marine, Acquario di Grosseto (Italy)


Primary contact Dept. Italy Islameta Group, Dept. of Biology - University of Pisa
Data entry Michael Coyne seaturtle.org


Italy D. 2024. Loggerheads in the Tyrrhenian Sea. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/1682) on yyyy-mm-dd and originated from Satellite Tracking and Analysis Tool (STAT; http://www.seaturtle.org/tracking/index.shtml?project_id=90).


Virtually nothing is known of the movements made by the many loggerhead juveniles that spend long periods of the year in the sea in front of the Tuscany coast, Northern Tyrrhenian Sea (central Mediterranean Sea). While it has been supposed that loggerheads frequent this area only during the warmest months and then undertake seasonal migrations towards southern (warmer) waters, the occurrence of such migrations have never been demonstrated. On the other hand, the fact that loggerheads are found in Tuscany waters throughout the year (winter months included) can indicate that the picture is more complex and variable than previously supposed. The aim is to localize the areas frequented by loggerheads in the Northern Tyrrhenian Sea, to document the occurrence of seasonal migrations and/or to investigate the turtles' fidelity to specific feeding areas.



Supplemental information

Visit STAT's project page for additional information.




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
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 turtles6,006
Rays and sharks0
Other species0
Non spatial0
Non species0
Date, Begin2005-07-19
Date, End2016-08-18
Temporal prec.111111
Latitude34.60 - 44.41
Longitude-4.77 - 32.43
Coord. prec.3 decimal digits
Data typeTelemetry location
TracklinesYES (ID: 1683)
Traveled (km)47,424
Travel hours34,519
Contr. throughSatellite Tracking and Analysis Tool
Sharing policy Permission required
Shared with SWOT
GBIF (via DOI)*
* Aggregated summary
See metadata in static HTML
See metadata in FGDC XML
See download history / statistics