Alternate title

2018 Harbour Porpoise survey Blasket Islands SAC

Date (Publication)

2022-07-07

Citation identifier

https://data.gov.ie/dataset/ / Harbour porpoise surveys in the Blasket Islands SAC, 2014

Purpose

The purpose of this project was to derive local density and abundance estimates for Harbour porpoise in the Blasket Islands SAC.

Status

Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Department of Housing, Local Government and Heritage	National Parks and Wildlife Service	datadelivery@housing.gov.ie	Point of contact

Maintenance and update frequency

As needed

GEMET - INSPIRE themes, version 1.0

• Species distribution

GEMET - Concepts, version 4.2.3

• biota, biodiversity, marine fauna, cetacean

National Parks and Wildlife Service

• National Parks and Wildlife Service, NPWS, marine, mammal, biodiversity

ISO 3166

• Ireland

Use limitation

http://creativecommons.org/licenses/by/4.0/

Use limitation

http://creativecommons.org/licenses/by/4.0/

Access constraints

Other restrictions

Other constraints

Copyright Government of Ireland. This dataset was created by National Parks and Wildlife Service, Department of Housing, Local Government and Heritage. This copyright material is licensed for re-use under the Creative Commons Attribution 4.0 International licence. http://creativecommons.org/licenses/by/4.0/

Spatial representation type

Vector

Denominator

50000

Language

English

Character set

UTF8

Topic category

• Environment

Begin date

2018-06-06

End date

2018-09-24

Reference system identifier

https://www.opengis.net/def/crs/EPSG/0/4326 / 4326

EPSG Geodetic Parameter Dataset EPSG 2009-11-25

Distribution format

Name	Version
Esri shapefile	v10+

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
Department of Housing, Local Government and Heritage	National Parks and Wildlife Service	datadelivery@housing.gov.ie.ie	Point of contact

OnLine resource

Protocol	Linkage	Name
zip	https://www.npws.ie/sites/default/files/general/HPBI18.zip	Dataset

Hierarchy level

Dataset

Statement

The 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.

Metadata

File identifier

6cf8d378-b737-43ad-a951-e5470c01f6cf XML

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Date stamp

2023-11-20T15:35:39

Metadata standard name

ISDI Metadata Profile

Metadata standard version

1.2

Metadata author

Organisation name	Individual name	Electronic mail address	Role
Department of Housing, Local Government and Heritage	National Parks and Wildlife Service	datadelivery@housing.gov.ie	Author