Loggerhead satellite tracking data from Rethymno, Crete, Greece

Samir Patel, Drexel University and Coonamessett Farm Foundation

During the 2010 and 2011 nesting seasons in Rethymno, Crete, Greece, 21 satellite tags were deployed on post-reproductive loggerhead turtles, 20 females and 1 male. One tag failed, while the remaining 20 transmitted data during the migration period, with most tags continuing to transmit after the individual had reached a site of residency. The female turtles exhibited three distinct strategies, either migrating north into the Aegean Sea, southwest towards the Libyan or Tunisian coasts or remaining resident within the waters of Crete. Females migrated after completing nesting for the season starting in early July. The male turtle exhibited a different behavior migrating away from the nesting beach in mid-June and traveling into the Western Mediterranean basin.

The purpose of this study was to understand the at-sea behavior of loggerhead turtles in the Mediterranean Sea through the use of satellite telemetry.

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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
oid	unique ID
fid	feature ID
series	turtle ID
obs_time	Time of location
obs_date	Date of location
lq	Location quality
latitude	Latitude of location
longitude	Longitude of location
source_nam	Original file source name
error_radi	Estimated error radius
sp_tsn	species ITIS TSN code
obs_count	Number of animals at location
sp_obs	Species tagged
geom	geometry information (generated by OBIS-SEAMAP)