Alternate title

2019 Cetacean Data, Celtic Sea Herring Acoustic Survey

Date (Publication)

2022-05-22

Citation identifier

https://data.gov.ie/dataset/ / Cetacean Monitoring undertaken during the Celtic Sea Herring Acoustic Survey (CSHAS) 2019

Purpose

To obtain data on cetaceans as part of the Marine Institutes annual acoustic herring survey in the Celtic Sea.

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

2019-10-10

End date

2019-10-28

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/2019CetaceanCelticSeaHerringAcoustic._MI_NPWS_0.zip	Dataset

Hierarchy level

Dataset

Statement

Cetacean watches were conducted using a standard single platform line transect survey design while the vessel was travelling at a consistent speed and heading. When the vessel was stationary at oceanographic stations, cetacean watches were conducted using a standard single platform point sampling survey design. Visual watches were undertaken from the vessel’s crow’s nest, located 17m above sea level, during all daylight hours, when weather conditions permitted. During periods of unfavourable weather conditions, observations were carried out from the bridge (11m above sea level).

The Cybertracker ( http://www.cybertracker.org/) data collection software package (Version 3.501) was used to collect all positional, environmental and sightings data, and save it to a Microsoft Access database. Positional data was collected using a portable GPS receiver with a USB connection and recorded every 5 seconds.

Each line transect was assigned a unique transect number, and a new transect was started anytime the vessel activity changed (i.e. changing from on-transect to inter-transect). Each subsequent sighting was also assigned to this unique transect number.

Environmental data was timestamped and recorded with GPS data at the beginning and end of each line transect. Environmental data was recorded at least every 15-30 minutes, or sooner if there was a change in environmental conditions. Environmental data recorded included; wind speed, wind direction, sea state, swell, visibility, cloud cover and precipitation. All data entry was time stamped by Cybertracker and saved in the Access database.

The distance of each sighting from the ship was estimated using a fixed interval range finder (Heinemann, 1981), while the bearing from the ship was estimated with an angle board. This data, along with data such as species identification, group size, composition, heading, sighting cues, surfacing interval, behaviour and any associations with birds or other cetaceans was also recorded on the time stamped Cybertracker sighting record page. Where species identification could not be confirmed, sightings were recorded at an appropriate taxonomic/confidence level

Some data was amended to comply with GDPR legislation and open data publication guidelines.

Metadata

File identifier

6ac5afe4-0ef5-411d-abcc-a4938bc88f97 XML

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Date stamp

2023-11-16T17:38:17

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