Bardsey Seal Counts

Grey seals Halichoerus grypus are among the rarest seals in the world: the UK population represents about 40% of the world population and 95% of the EU population. Globally, there are three reproductively-isolated stocks of grey seal: a west Atlantic (northern North American) stock; a Baltic stock; and an East Atlantic stock. The latter extends from Iceland and northern Norway southwards to northern France, with the majority breeding around Great Britain and Ireland. The extent of connectivity within the Irish Sea grey seal (Halichoerus grypus) population has been investigated every year since 2006 using photo-identification and bio-logging techniques The purpose of this data capture was to survey Bardsey seal population fluctuations. Surveys were undertaken by both trained staff and volunteers.

Identifier: NRW_DS115518

Alternative Title

Cyfrif Morloi Llwyd Ynys Enlli

Metadata Language: English

Lineage: Seal counts on Bardsey are taken during a weekly walk round the island during the period where most seals would be hauled out, dry and resting. Seals are differentiated into various stage and gender categories, from youngest to oldest, i.e. white-coat pup; fully moulted pup; youngster; juvenile (female and male); adult male and adult female; and indeterminate (sex of the individual unknown). The seasons are classified as follows: autumn (September to November); winter (December to February; to spring (March to May) and summer (June to August).

Dataset Reference Date (Publication): 2013-01-20

Temporal Extent

Begin date: 2007-09-15

End date: 2013-01-20

Topic category

Biota

Owner

Natural Resources Wales (NRW) -

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Owner

Royal Society for the Protection of Birds (RSPB) -

Sutherland House, Cowbridge Road East, Cardiff, CF11 9AB

http://www.rspb.org.uk/wales/

Originator

Porter -

Bardsey Monitoring Officer (volunteer), Ty Pellaf, Ynys Enlli, Aberdaron, LL53 8DE

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Extent

Geographic Extent: Wales (WLS)

Vertical Extent

Medin Extent Keyword: unknown

Format Type and Description

Documents ( )

Specification

[A] Raw counts provided by Jo Porter in word .doc format [B] Master Speadsheet in xls format collating all the information and also collation in word format [C] Protocol for low tide counts

Data quality

Quality Scope: Dataset

Conformity: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
Explanation: This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
Degree: false

Lineage: Seal counts on Bardsey are taken during a weekly walk round the island during the period where most seals would be hauled out, dry and resting. Seals are differentiated into various stage and gender categories, from youngest to oldest, i.e. white-coat pup; fully moulted pup; youngster; juvenile (female and male); adult male and adult female; and indeterminate (sex of the individual unknown). The seasons are classified as follows: autumn (September to November); winter (December to February; to spring (March to May) and summer (June to August).

Keywords

GEMET - INSPIRE themes, version 1.0

Species distribution

Type: Theme

Citation

Date (Publication): 2008-06-01

Code: geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus

Test entry
halichoerus grypus

Type: Theme

Citation

Date (Publication): 2024-06-13

Code: geonetwork.thesaurus.local.theme.converted_nrw-keywords

Keywords

SeaDataNet Parameter Discovery Vocabulary

Seal abundance
Seal reproduction

Type: Theme

Citation

Date (Publication): 2024-03-28

Code: geonetwork.thesaurus.external.theme.rdf+xml

Code: Latitude and Longitude (EPSG::4326)

Content Information

NRW Profile

Custom Elements

Constraints

Limitations on Public Access and Use

Restriction type: Other restrictions

Access Constraints Directive

Limitations: no limitations

Access Constraints Text

Other constraints: This data is jointly owned by NRW and RSPB. There are no access restrictions on this data. NRW may release, publish or disseminate it freely.

Use Constraints

Use constraints type: Other restrictions

Other constraints: © CNC/NRW and RSPB. NRW owns the copyright of the collation, but the ownership of the records themselves rests with the RSPB. Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and copyright of the owners. It is the recipient's responsibility to ensure the data is fit for the intended purpose.

Metadata

File Identifier: 4f4c4942-4343-5764-6473-313135353138 XML

Metadata Language: English

Resource type: Dataset

Metadata Date: 2025-02-03T15:51:37.704Z

Metadata Standard Name: NRW

Metadata Standard Version: 1.0

pointOfContact

Natural Resources Wales (NRW) -

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Publishing Body

Access the portal

Full access to the portal and metadata.

Bardsey Seal Counts

Identification

Temporal Extent

Extent

Extent

Vertical Extent

Distribution

Quality

Data quality

Keywords

Keywords

Citation

Keywords

Citation

Keywords

Citation

Spatial Reference System

Content

Content Information

NRW Profile

Custom Elements

Constraints

Constraints

Limitations on Public Access and Use

Access Constraints Directive

Access Constraints Text

Use Constraints

Metadata

Metadata

Publishing Body