Pembrokeshire Marine / Sir Benfro Forol Special Area of Conservation (SAC) Grey Seal (Halichoerus grypus) Monitoring 2005
The Habitats Directive establishes that the management of Special Areas of Conservation (SACs) should aim to achieve the favourable conservation status of habitat and species features listed within its Annex I and Annex II. For SACs in Wales, the former Countryside Council for Wales (CCW), now part of Natural Resources Wales (NRW), is therefore required to report on a regular basis on whether features are in favourable conservation status. Grey seals (Halichoerus grypus) are among the rarest seals in the world: the UK population represents about 40 percent of the world population and 95 percent of the EU population. Pembrokeshire Marine / Sir Benfro Forol SAC is home to one of the largest populations of grey seals around the west coast of the UK. The purpose of this data capture was to record, document and report indicators of the condition of grey seals within the SAC. In addition to this, monitoring is also used to document and report on the impact of human activities, assessment of supporting habitat, and used in the estimations related to the population and structure (age and sex). The data collected will contribute to an estimate of whole site (SAC) production using indices developed following the 1992-94 seal census.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS87116
- Alternative Title
-
- Monitro morloi llwyd Ardal Gadwraeth Arbennig mor Sir Benfro 2005
- Metadata Language
- English
- Lineage
-
Natal sites were scanned thoroughly and systematically using binoculars (10x40 or 8x 40) from the standard observation points. At each monitoring site, abundance, estimated age, sex and behavioural categories were recorded. Environmental conditions were recorded, including date, time, wind, cloud cover and sea conditions (sea state and swell). Recent wind, sea and tidal conditions were also recorded as field notes. The 1992-94 West Wales seal Census established a 'population' baseline for the area between Caldey Island in the southeast and Aberystwyth in mid Cardigan Bay. The pupping data for Skomer Island is the longest running dataset for the area (beginning 1974, then annually since 1983). The data set for the Skomer MNR as a whole runs from 1991 to the present. This project will continue the work previously carried out in Pembrokeshire by Strong (1995, 1996, 1998) in an effort to be comparable to the previous work and concurrently address monitoring objectives. Images collected at sites within and outside the key study area, using pelage photography techniques, will be used to evaluate seal movements, abundance estimates and distribution of adults in future work.
- Dataset Reference Date (Publication)
- 2006-12-31
Temporal Extent
- Begin date
- 1995-01-01
- End date
- 2005-12-31
- Topic category
-
- Biota
Extent
Extent
- Geographic Extent
- Pembrokeshire (45)
- Geographic Extent
- Wales (WLS)
))
Vertical Extent
- Medin Extent Keyword
-
benthic boundary layer; water column skin
Distribution
- Format Type and Description
-
-
Image
()
- Specification
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[A] Dataset consists of: Digital versions of the contract report: Microsoft Word document(s); and an equivalent Adobe Portable Document Format version. Digital photographs (in .jpg format) - A series of 13 photos showing survey sites used for data collection. - A series of 68 grey seal pelage photos from N.Pembrokeshire mainland sites. - A series of 86 grey seal pelage photos from Ramsey Island sites. [B] An index of grey seal pelage photography filenames in Microsoft Word format (as reproduced in Appendix 5 of the report). [C] A series of 8 MapInfo (GIS) tables in MapInfo format (.dat, .id, .map, .tab). [D] A series of 4 Microsoft Excel spreadsheets containing raw survey data.
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Image
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
-
Natal sites were scanned thoroughly and systematically using binoculars (10x40 or 8x 40) from the standard observation points. At each monitoring site, abundance, estimated age, sex and behavioural categories were recorded. Environmental conditions were recorded, including date, time, wind, cloud cover and sea conditions (sea state and swell). Recent wind, sea and tidal conditions were also recorded as field notes. The 1992-94 West Wales seal Census established a 'population' baseline for the area between Caldey Island in the southeast and Aberystwyth in mid Cardigan Bay. The pupping data for Skomer Island is the longest running dataset for the area (beginning 1974, then annually since 1983). The data set for the Skomer MNR as a whole runs from 1991 to the present. This project will continue the work previously carried out in Pembrokeshire by Strong (1995, 1996, 1998) in an effort to be comparable to the previous work and concurrently address monitoring objectives. Images collected at sites within and outside the key study area, using pelage photography techniques, will be used to evaluate seal movements, abundance estimates and distribution of adults in future work.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
-
- grey seals
- halichoerus grypus
- seals (see also specific species)
- pinnipedia (pinnipeds)
- Ramsey Island
- Pembrokeshire Marine cSAC
- seal breeding census
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Keywords
- SeaDataNet Parameter Discovery Vocabulary
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- Seal abundance
- Type
- Theme
Citation
- Date (Revision)
- 2021-01-06
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
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Cetaceans recorded by the west Wales grey seal census 1992 - 1994
- NRW Related Title
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Field observations on the disturbance of grey seals in North Wales 2003
- NRW Related Title
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Grey seal pup production monitoring, Ramsey Island and North Pembrokeshire, 1995
- NRW Related Title
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Grey seal pup production monitoring, Ramsey Island and North Pembrokeshire, 1996
- NRW Related Title
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Grey seal pup production monitoring: Ramsey Island and North Pembrokeshire, 1997
- NRW Related Title
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Pembrokeshire marine SAC grey seal monitoring 2005
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
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There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
Use Constraints
- Use constraints type
- Other restrictions
- Other constraints
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© CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose.
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-3837313136 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2024-05-31T09:42:47.239Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0