Loggerheads in the Tyrrhenian Sea

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)

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.

N/A

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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