CODA cetacean sightings on primary platform of vessel surveys 2007

Sea Mammal Research Unit, University of St. Andrews

The Cetacean Offshore Distribution and Abundance in the European Atlantic (CODA) project estimated the abundance and investigated the habitat use of cetacean species in waters beyond the continental shelf and developed a management framework for determining safe bycatch limits for the common dolphin in this area. The results were intended primarily to inform assessments of the conservation status of all cetacean species and to help assess the impact of bycatch of common dolphin.

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Surveys from seven different vessels were merged. Each vessel contained two sightings platforms running concurrently – primary and tracker. This dataset includes sightings from the primary platform. Sightings from the tracker platform are registered in CODA cetacean sightings on tracker platform of vessel surveys 2007.

The dataset has been updated over time as outlined below. Each entry includes the version number, release date, type of change, and a short description.

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 number (generated by OBIS-SEAMAP)
id	definition not provided
vessel	definition not provided
sighting_number	definition not provided
obs_datetime	Date and time of observation in local time calculated by OBIS-SEAMAP
latitude	Latitude in decimal degrees
longitude	Longitude in decimal degrees
button	definition not provided
sp_obs	Species name recorded
sp_tsn	ITIS Taxonomic Serial Number added by OBIS-SEAMAP
perpdist	definition not provided
angle	definition not provided
radial_distance	definition not provided
multi_species	definition not provided
id_confidence	definition not provided
low_number	definition not provided
obs_count	Best estimate of number of animals
high_number	definition not provided
calves	Number of calves
cue	Record of the initial cue for the sighting
behaviour	Behavior
aspect_value	definition not provided
transect	definition not provided
platform	definition not provided
geom	definition not provided