Dataset

Ionian Sea mega-fauna monitoring employing a sailing vessel along random tracks from 2008 to 2018

EurOBIS MeasurementOrFact Open in mapper Explore occurrences

In June 2008 Gaia Research Institute Onlus started a systematic survey of mega-fauna in the Northern Eastern Ionian Sea, in cooperation with the researchers of the Life and System Biology Department of the University of Turin (Italy). GAIA_IONIAN_2008-2018 dataset includes ten years of effort (survey track) and sightings data of marine mammals and marine reptiles collected by experienced marine mammal observers (MMOs) on board of a 12m sailing vessel. MMOs visually inspected both sides (130° angle) of the research vessel, while navigating along random transects. Distance and angle from the track line of each sighting were always recorded.

Citation: Azzolin, M. - Gaia Research Institute Onlus, Italy (2020): Ionian Sea mega-fauna monitoring employing a sailing vessel along random tracks from 2008 to 2018

Published: September 17, 2025 at 10:09

URL: http://ipt.vliz.be/eurobis/resource?r=gaia_ionian_2008-2018

Marta Azzolin
University of Turin; Department of Life Sciences and Systems Biology

Flanders Marine Institute (VLIZ)
Flanders Marine Institute (VLIZ)

Sébastien Saintignan
Gaia Research Institute Onlus

384
occurrence records
1,555
measurements and facts
9
taxa
7
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 12 254
69.3%
maximumDepthInMeters 384
100.0%
minimumDepthInMeters 384
100.0%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag Dropped Records
NO_DEPTH 384
100.0%
ON_LAND 14
3.6%

Measurement types

DNA derived data