Across Wales Drop-Down Video Monitoring: North Llŷn Special Area of Conservation (SAC) 2012
Routine drop-down video monitoring was undertaken within Pen Llŷn a'r Sarnau Special Area of Conservation (SAC) in June 2012 to support the assessment and management of protected marine habitats and species. The survey formed part of an ongoing monitoring programme within Welsh SACs and continued the collection of seabed habitat data from previous years. A total of 30 video tows were completed across circalittoral habitats around the northern Llŷn Peninsula using a high-definition video system deployed from the CCW research vessel Pedryn. Photographic stills were collected throughout the survey to support habitat validation and species identification. Survey data were analysed to identify habitats, species and biotopes, providing information on the distribution and character of seabed features within the SAC and supporting conservation management and monitoring objectives.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS115526
- Alternative Title
-
- 2012 CCW North Pen Llŷn Drop Down and Towed Video Monitoring (MRCCW3170000000B)
- Metadata Language
- English
- Lineage
-
Survey data were collected by the Countryside Council for Wales (CCW) in June 2012 using a C-Technics C-Vision Mantis HD video camera mounted on a towed sledge and deployed from the research vessel Pedryn. Thirty video tows were undertaken across circalittoral habitats within the northern part of Pen Llŷn a'r Sarnau SAC. A Canon 600D digital camera system was used to capture photographic stills at approximately eight-second intervals along each tow to assist with habitat validation, species identification and enhancement of species records.
Video footage was analysed by Marine Ecological Solutions (Marine EcoSol) using standard Marine Nature Conservation Review (MNCR)-derived survey methodologies and the JNCC Marine Habitat Classification. Quality assurance procedures included independent re-analysis of approximately 5% of video tows and verification of at least 10% of data entry records. The validated habitat, species and biotope data were entered into Marine Recorder by Marine EcoSol. Supporting spatial data, including vessel track information exported from onboard GPS systems, start and end locations, and field survey notes, were retained with the survey records. The resulting dataset contributes to the long-term monitoring programme for marine habitats within Pen Llŷn a'r Sarnau SAC and supports evidence-based conservation management.
- Dataset Reference Date (Publication)
- 2013-03-28
Temporal Extent
- Begin date
- 2012-06-01
- End date
- 2012-06-30
- Topic category
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- Biota
Extent
Extent
- Geographic Extent
- Wales (WLS)
))
Vertical Extent
- Medin Extent Keyword
-
benthic boundary layer
Vertical Extent
- Minimum value (metres)
- -10
- Maximum value (metres)
- -30
- Vertical CRS
Distribution
- Format Type and Description
-
-
Database
(
Marine Recorder Online - Version 2.09.02
)
- Specification
-
Marine Recorder
-
Database
(
Marine Recorder Online - Version 2.09.02
)
Quality
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
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This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Degree
- false
- Lineage
-
Survey data were collected by the Countryside Council for Wales (CCW) in June 2012 using a C-Technics C-Vision Mantis HD video camera mounted on a towed sledge and deployed from the research vessel Pedryn. Thirty video tows were undertaken across circalittoral habitats within the northern part of Pen Llŷn a'r Sarnau SAC. A Canon 600D digital camera system was used to capture photographic stills at approximately eight-second intervals along each tow to assist with habitat validation, species identification and enhancement of species records.
Video footage was analysed by Marine Ecological Solutions (Marine EcoSol) using standard Marine Nature Conservation Review (MNCR)-derived survey methodologies and the JNCC Marine Habitat Classification. Quality assurance procedures included independent re-analysis of approximately 5% of video tows and verification of at least 10% of data entry records. The validated habitat, species and biotope data were entered into Marine Recorder by Marine EcoSol. Supporting spatial data, including vessel track information exported from onboard GPS systems, start and end locations, and field survey notes, were retained with the survey records. The resulting dataset contributes to the long-term monitoring programme for marine habitats within Pen Llŷn a'r Sarnau SAC and supports evidence-based conservation management.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
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NRW Thesaurus
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- Marine Recorder
- North Llyn Modiolus site
- Pen Llyn a'r Sarnau SAC
- drop-down video
- towed video
- Type
- Theme
Citation
- Date (Publication)
- 2026-10-19
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2024-06-19
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
-
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
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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.
Attribution Statement
- Other constraints
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Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Licence
- Other constraints
- Open Government Licence
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313135353236 XML
- Metadata Language
- English
- Parent Identifier
-
Natural Resources Wales (NRW) Marine Benthic Species and Habitat Collation Held in Marine Recorder
NRW_DS114501
- Resource type
- Dataset
- Metadata Date
- 2026-10-23T11:00:23.234Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0