Across Wales Drop-Down Video Monitoring Survey (2004–2005)
This dataset comprises drop-down video surveys undertaken within Welsh Special Areas of Conservation (SACs) between 2004 and 2005 to support the monitoring and management of protected marine habitats and species. Surveys were conducted within Pen Llŷn a'r Sarnau SAC, Menai Strait and Conwy Bay SAC, Cardigan Bay SAC, and Pembrokeshire Marine SAC by SeaStar Survey under contract to the Countryside Council for Wales (CCW). The primary aim was to assess the extent, distribution and biotope diversity of reef and large shallow inlet and bay features, while providing baseline information to support site condition assessment, conservation management and statutory reporting requirements. Video observations were used to describe seabed habitats, substrata and associated biological communities and to classify habitats according to the JNCC Marine Habitat Classification. Survey locations included North Llŷn, Bardsey Island, Tremadog Bay, Moelfre, Cardigan Bay and several areas within Pembrokeshire Marine SAC. The resulting dataset provides a baseline record of subtidal habitats and communities across Welsh SACs and forms part of a long-term marine monitoring programme.
Only a redacted version of this data is available under the Open Governance Licence and available for public use, see Limitation on Public Access and Use Constraints. Species/habitats listed in NRWs guidance on ecological data and information exempt from general release will be redacted on release.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS87090
- Alternative Title
-
- 2004-2005 CCW Across Wales towed video monitoring survey (MRCCW31600000002)
- Metadata Language
- English
- Lineage
-
Drop-down video surveys were undertaken by SeaStar Survey on behalf of the Countryside Council for Wales (CCW) between August 2004 and July 2005 using video systems deployed from the CCW research vessel Pedryn. Survey work in 2004 focused primarily on Cardigan Bay SAC, whilst surveys completed during 2005 covered Pen Llŷn a'r Sarnau SAC, Menai Strait and Conwy Bay SAC, and Pembrokeshire Marine SAC. Survey sites were selected through collaboration between CCW and SeaStar Survey using a stratified random sampling approach designed to provide representative coverage of designated features and areas of particular conservation interest.
Video surveys were conducted at fixed sampling locations to characterise seabed habitats, substrata and associated faunal communities. Survey data were analysed to assign habitat and biotope classifications using the Marine Nature Conservation Review (MNCR) methodology and the JNCC Marine Habitat Classification described by Connor et al. (2004). Additional diver-based ground-truthing surveys were undertaken in September 2004 at 22 sites to validate interpretations derived from video observations.
Quality assurance procedures and survey methodologies are documented within CCW Marine Monitoring Reports 24a and 24b. A subset of video data was re-analysed in 2010 to improve habitat and species resolution, and all video data were subsequently reviewed again in 2012. Species, habitat and biotope records generated from the surveys were entered into Marine Recorder. The dataset forms part of the Across Wales marine monitoring programme and provides a baseline against which future monitoring and condition assessments of Welsh SAC features can be undertaken.
- Additional Information
-
Axelsson, Tourell, Holt, Lough (2006) Drop-down video monitoring in Wales 2004 - 2005. A report to the Countryside Council for Wales by SeaStar Survey, Southampton, SO14 5QY. CCW Marine Monitoring Report No: 24a
- Dataset Reference Date (Publication)
- 2006-05-31
Temporal Extent
- Begin date
- 2004-08-23
- End date
- 2005-07-17
- Topic category
-
- Biota
Extent
Extent
- Geographic Extent
- Irish Sea
- Geographic Extent
- Menai Strait
- Geographic Extent
- Tremadog Bay
- Geographic Extent
- Carmarthen Bay
- Geographic Extent
- Swansea Bay
- Geographic Extent
- Cardigan Bay
- Geographic Extent
- Wales (WLS)
))
Vertical Extent
- Medin Extent Keyword
-
benthic boundary layer
Vertical Extent
- Minimum value (metres)
- 0
- Maximum value (metres)
- 43.2
- 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
-
This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Degree
- false
- Lineage
-
Drop-down video surveys were undertaken by SeaStar Survey on behalf of the Countryside Council for Wales (CCW) between August 2004 and July 2005 using video systems deployed from the CCW research vessel Pedryn. Survey work in 2004 focused primarily on Cardigan Bay SAC, whilst surveys completed during 2005 covered Pen Llŷn a'r Sarnau SAC, Menai Strait and Conwy Bay SAC, and Pembrokeshire Marine SAC. Survey sites were selected through collaboration between CCW and SeaStar Survey using a stratified random sampling approach designed to provide representative coverage of designated features and areas of particular conservation interest.
Video surveys were conducted at fixed sampling locations to characterise seabed habitats, substrata and associated faunal communities. Survey data were analysed to assign habitat and biotope classifications using the Marine Nature Conservation Review (MNCR) methodology and the JNCC Marine Habitat Classification described by Connor et al. (2004). Additional diver-based ground-truthing surveys were undertaken in September 2004 at 22 sites to validate interpretations derived from video observations.
Quality assurance procedures and survey methodologies are documented within CCW Marine Monitoring Reports 24a and 24b. A subset of video data was re-analysed in 2010 to improve habitat and species resolution, and all video data were subsequently reviewed again in 2012. Species, habitat and biotope records generated from the surveys were entered into Marine Recorder. The dataset forms part of the Across Wales marine monitoring programme and provides a baseline against which future monitoring and condition assessments of Welsh SAC features can be undertaken.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
-
NRW Thesaurus
-
- drop-down video
- Marine Recorder
- towed video
- Type
- Theme
Citation
- Date (Publication)
- 2026-10-28
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2024-06-19
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
-
Drop-down Video Footage and Biotope Identification Data 1999
- NRW Related Title
-
The establishment of a programme of surveillance and monitoring for judging the condition of the features of Pen Llyn a'r Sarnau cSAC : 1. Progress to March 2001
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
-
Part of this dataset is sensitive and restricted as it contains data exempt from general release under EIR. NRW may NOT publish or disseminate the sensitive data. Requests should be referred to NRW's Access to Information Officer. However, there are no access restrictions on non-sensitive data. NRW may release, publish or disseminate a redacted version of the data freely.
Use Constraints
- Use constraints type
- Other restrictions
- Other constraints
-
© CNC/NRW. NRW does NOT grant permission to third parties to re-use or disseminate the full dataset. A redacted version of the data may be re-used under the terms of the Open Government Licence, provided that the source and NRW's copyright are acknowledged. It is the recipient's responsibility to ensure that the data is fit for its intended purpose.
Attribution Statement
- Other constraints
-
Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Licence
- Other constraints
- Open Government Licence
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-3837303930 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
- 2026-10-29T11:55:47.341Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0