Across Wales Drop-Down Video Monitoring: Puffin Island Survey (2011)
This dataset consists of drop-down video surveys of sites around Puffin Island, Anglesey. Work was carried out by former Countryside Counicl for Wales (CCW), now part of Natural Resources Wales (NRW) within the Menai Strait and Conwy Bay Special Area of Conservation (SAC). Subsequent analysis of the video taken was undertaken by Marine Ecological Soultions Ltd on behalf of CCW. The project was designed to validate existing HABMAP data of the area surrounding Puffin Island. Methods of data capture: Drop-down video is useful for gathering large volumes of data across wide areas of seabed and often to depths beyond which divers' observations can be safely made. Detailed methods and site locations are described in CCW Marine Monitoring Report 24a. Amendments to these methods include the addition of a HD video camera system manufactured by C-Tecnics in place of the SD camera previously used. A Canon EOS 400D digital SLR was also used in a housing manufactured by Rovtech Systems. Photographic stills were taken every 11 seconds along the tows to assist with species and habitat validation.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS114500
- Alternative Title
-
- 2011 CCW Towed Video Survey of Puffin Island MRCCW31700000004
- Gwaith monitro cwymp-gamerau fideo ar draws Cymru 2011: Arolwg Ynys Seiriol
- Metadata Language
- English
- Lineage
-
Following methodological and equipment trial drop-down video survey methods were employed extensively in Welsh Special Area of Conservation (SACs) in 2004 and 2005. The 2004 survey work focused on Cardigan Bay SAC, while the 2005 survey work focused on Pen Llyn a'r Sarnau, Menai Strait and Conwy Bay, Cardigan Bay and Pembrokeshire Marine.
- Dataset Reference Date (Publication)
- 2011-12-31
Temporal Extent
- Begin date
- 2011-06-07
- End date
- 2011-06-08
- Topic category
-
- Oceans
- Biota
Extent
Extent
- Geographic Extent
- Wales (WLS)
))
Vertical Extent
- Medin Extent Keyword
-
benthic boundary layer
Vertical Extent
- Minimum value (metres)
- 1
- Maximum value (metres)
- 28
- Vertical CRS
- urn:ogc:def:datum:EPSG::5100 Sea Level depth is unadjusted and does not take into account tidal height
Distribution
- Format Type and Description
-
-
Documents
Documents
()
- Specification
-
[A] Recorded directly onto hard drive as .asf files. [B] Still images in jpg format. Site details and video metadata data in excel spreadsheets. [C] The videos are analysed and habitat and species data entered into Marine Recorder [MRCCW31700000004]
-
Documents
Documents
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
-
Following methodological and equipment trial drop-down video survey methods were employed extensively in Welsh Special Area of Conservation (SACs) in 2004 and 2005. The 2004 survey work focused on Cardigan Bay SAC, while the 2005 survey work focused on Pen Llyn a'r Sarnau, Menai Strait and Conwy Bay, Cardigan Bay and Pembrokeshire Marine.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
-
- Video survey
- benthic marine habitats
- drop-down video
- towed video
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Keywords
- SeaDataNet Parameter Discovery Vocabulary
-
- Habitat characterisation
- Type
- Theme
Citation
- Date (Revision)
- 2021-01-06
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
-
Part of this dataset is sensitive and restricted. The sensitive data is as follows Ostrea edulis, Palinurus elephas. Sensitive data must be kept confidential; general release is not permitted due to risk of harm to the environment or third parties. Sensitive data may only be released under an appropriate NRW Licence. Requests should be referred to NRW's Access to Information Officer. Data may be released freely if the sensitive records are removed in advance, or shown only at a coarser scale.
Use Constraints
- Use constraints type
- Other restrictions
- Other constraints
-
© CNC/NRW 2011 Recipients may only re-use sensitive data in strict confidence under the terms of an appropriate NRW Licence. No publication or dissemination is permitted, except if sensitive records are removed in advance, or shown only at a coarser scale.
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313134353030 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
- 2024-05-31T09:31:53.116Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0