Dataset Details - ObSERVE Visual Surveys for Cetaceans in the Irish Atlantic Margin
During all transects to and from the ObSERVE Acoustic SAM deployment sites and during the PAM towed hydrophone surveys (during daylight hours), a visual survey to collect ancillary cetacean sightings data was conducted by the Galway Mayo Institute of Technology.
To assess the occurrence, distribution and abundance of cetaceans in the Irish Atlantic Margin
Visual detections of cetaceans and marine megafauna by obervers during opportunistic line transect surveys conducted from ships or sailing craft
Irish Atlantic Margin
2015 - 2017
During daylight hours, a minimum of three people (two primary observers experienced in cetacean line transect survey methods and cetacean identification, and one data recorder) were required to carry out the survey. Primary observers scanned the area around the ship, out to a distance of 1,000 m, with the naked eye. The observers scanned from dead ahead to 90° to port or starboard, depending on which side of the vessel they were positioned.Sightings, species identification, behaviour and group size were confirmed with the aid of 7 X 50 binoculars. The team of three primary observers rotated positions every hour to avoid bias on one side of the trackline and conducted two hours on effort and one hour off (operating LOGGER) to avoid a decline in sightings detection due to fatigue.
Use of the data in any publication is prohibited until 1st May 2019. Any publication post 1st May 2019 should acknowledge the ObSERVE project partners the Department of Communications, Climate Action and Environment and the Department of Culture, Heritage and the Gaeltacht
Restricted (Data can be viewed on the mapping system but is not available for download)
Department of Communications, Climate Action & Environment, ObSERVE Visual Surveys for Cetaceans in the Irish Atlantic Margin, National Biodiversity Data Centre, Ireland, accessed 21 January 2022, <https://maps.biodiversityireland.ie/Dataset/324>
Dataset species distribution
Terrestrial Map - 10kmDistribution of the number of species recorded within each 10km grid square (ITM).
Marine Map - 50KmDistribution of the number of species recorded within each 50km grid square (WGS84).
Dataset record distribution
Terrestrial Map - 10kmDistribution of the number of records within each 10km grid square (ITM).
Marine Map - 50KmDistribution of the number of records within each 50km grid square (WGS84).
Records per year
Species per year
|SurveyId||Title||Data Capture Period||Species||Records|
|Loading data from server|
|Altitude||Altitude at which specimen was captured|
|Behaviour||A description of the type of behaviour observed|
|Number of adults||The number of adults observed|
|Number of calves||The number of calves observed|
|Number of juveniles||The number of juveniles observed|
|Platform type||The type of platform from which the observation was made|
|Record comment||A comment associated with any individual record|
|Recording platform||The name of the platform from which the observation was made|
|Sampling method||Description of the sampling method employed to make the record|
|Sea state||Sea conditions at the time of observation|
|Survey name||Name of survey if the record was made as part of a specific survey (including collections of casual observations and other loose assemblages of data)|
|Time (UTC)||The time at which the sighting was made|
|Type of sighting||A description of the type of sighting made|
|Loading data from server|