L o a d i n g
Overviewbiodiversitybiotacetaceanenvironmentirelandmammalmarinemarine faunanational parks and wildlife servicenpwsspecies distribution
A set of visual surveys for Harbour porpoise (Phocoena phocoena) was carried out in the Blasket Islands SAC in order to derive local density and abundance estimates. Single platform line-transect surveys were carried out according to a standardised design on six days between June and September 2018. Surveys were conducted between 5th June and 24th September 2018.
Additional Information
KeyValue
Conforms To["The INSPIRE Directive or INSPIRE lays down a general framework for a Spatial Data Infrastructure (SDI) for the purposes of European Community environmental policies and policies or activities which may have an impact on the environment.", "http://www.opengis.net/def/crs/EPSG/0/4326"]
Contact Emaildatadelivery@housing.gov.ie
Contact NameDepartment of Housing, Local Government and Heritage
FrequencyOther
Guidhttps://data.gov.ie/dataset/bcee20f0-6f68-4a6b-9557-8f48734b8878
Harvest Object Id86335408-7e96-4350-962e-f81ec3d990c1
Harvest Source Id01350574-268d-4abb-b9b4-8108224932c4
Harvest Source Titledata.gov.ie - Environment
Identifierbcee20f0-6f68-4a6b-9557-8f48734b8878
Issued2022-07-07
Language["http://publications.europa.eu/resource/authority/language/ENG"]
Modified2026-06-03T02:23:44
ProvenanceThe shapefile HPBI18_Species_Survey_1 was created on the 5th June 2018 as part of the 2018 Harbour porpoise surveys in the Blasket Islands SAC. During each transect the position of the survey vessel was tracked continuously through a GPS receiver connected to a laptop computer, while survey effort data including environmental conditions (sea-state, wind strength and
direction, glare, etc.) were recorded every 15 minutes using LOGGER software ( IFAW). When a sighting was
made the position of the vessel was recorded immediately and the angle of the sighting from the track of the
vessel and the estimated radial distance of the sighted animal(s) from the vessel were recorded. These data were
communicated to the recorder in the wheelhouse via VHF radio. The angle was recorded to the nearest degree
using an angle board attached to the vessel immediately in front of each observer. Accurate distance estimation is
important for distance sampling. Measuring sticks (Heinemann 1981) were used by each primary observer to assist
in distance estimation.
The data was modified to comply with GDPR legislation and open data publication guidelines.
Publisher NameDepartment of Housing, Local Government and Heritage
Publisher Urihttps://data.gov.ie/organization/department-of-housing-planning-community-and-local-government
Spatial{"type":"Polygon","coordinates":[[[-10.650444030762, 50.807923689449],[-10.650444030762, 55.993470564449], [-5.289115905762, 55.993470564449], [-5.289115905762, 50.807923689449], [-10.650444030762, 50.807923689449]]]}
Temporal End2018-09-24
Temporal Start2018-06-06
Theme["http://publications.europa.eu/resource/authority/data-theme/ENVI", "Environment"]
Urihttps://data.gov.ie/dataset/bcee20f0-6f68-4a6b-9557-8f48734b8878