Across Wales Drop-down Video monitoring 2004-2005

Drop-down video surveys of Special Area of Conservation (SACs) across Wales (Pen Llyn a'r Sarnau, Menai Strait and Conwy Bay, Cardigan Bay and Pembrokeshire). Work carried out by Seastar Survey under contract to Countryside Council of Wales (CCW). The data was collected to enable site monitoring to support management and reporting of SACs in Wales. The monitoring of subtidal aspects of SACs will indicate whether the desired condition of the feature of interest for which the site was designated is being achieved. The work will also enable judgements to be made about whether the management of the site is appropriate. Analysis of video recordings from the 2005 survey will be used to produce descriptions of the seabed environment including substrata and faunal communities as well as classifying the different sites into biotopes according to Connor et al. (2004). Survey areas within the SACs focused on north Pen Llyn, Bardsey Island, Tremadog Bay and Moelfre in north Wales, areas off Cardigan Island, Cemaes Head and between Aberaeron and Llangranog (off Newquay) within Cardigan Bay, and Hats and Barrels Reef, Bishops and Clerks, Skokholm Island and the Castlemartin ridges in Pembrokeshire.

Identification

Identifier
NRW_DS87090
Alternative Title
  • 2004-2005 CCW across Wales towed video monitoring survey MRCCW31600000002
  • Gwaith monitro cwymp-gamerau ar draws Cymru
  • CCW Marine Monitoring Report No. 24a, 24b
Metadata Language
English
Lineage

Drop down video surveying was conducted at well-defined sites. Surveys were carried out in 2004 and 2005. The 2004 survey was carried over August 23-26, and focused on the Cardigan Bay SAC. 2005 survey work was carried out during the period May to July and focused on the other SACs. Ground truthing was carried out over September 6-10 2004. Data collection follows trials of the drop-down video monitoring technique (Sanderson et al., 2001; CCW Marine Monitoring report No. 1, CCW Marine Monitoring report No. 15). Future data collection is planned annually, visiting the same sites to form a time-series of comparative data. In 2010 a subset of videos were re-analysed to provide further habitat and species detail. In 2012 all video data was reanalysed in April 2012. Methods and site locations are described in CCW Marine Monitoring Report No. 24a. A separate report (CCW Marine Monitoring report No, 24b) details exact quality control and standard operating procedures in relation to survey methodologies used. Additional ground truthing was carried out in September 2004 by a team of 6 divers at 22 sites. Species and habitat data entered into Marine Recorder.
Dataset Reference Date (Publication)
2006-05-31
Owner
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Originator
  SeaStar Survey Marine Data Acquisition
Ocean Quay Marina, Belvidere Road, Southampton, SO14 5QY
http://www.seastarsurvey.co.uk/
Originator
  Coastal Assessment Liaison and Monitoring (CALM)
Ti Cara, Point Lane, Cosheston, Pembrokeshire, SA72 4UN, Wales
<!--No website -->
 

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)
N
W
E
S
Map representing the geographic extent of the dataset


 

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 ()

    Specification

    [A] A series of 21 DVDs containing digital video footage in .MPEG format. [B] A series of .txt files containing track logs and positional data from the surveys. [C] Excel spreadsheets detailing positional data in OSGB and Lat/Long format. [D] Draft and final copies of an August 2004 field report in .doc format. [E] Habitat and species data extracted from the video is held in Marine Recorder

 

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
Degree
false
Lineage

Drop down video surveying was conducted at well-defined sites. Surveys were carried out in 2004 and 2005. The 2004 survey was carried over August 23-26, and focused on the Cardigan Bay SAC. 2005 survey work was carried out during the period May to July and focused on the other SACs. Ground truthing was carried out over September 6-10 2004. Data collection follows trials of the drop-down video monitoring technique (Sanderson et al., 2001; CCW Marine Monitoring report No. 1, CCW Marine Monitoring report No. 15). Future data collection is planned annually, visiting the same sites to form a time-series of comparative data. In 2010 a subset of videos were re-analysed to provide further habitat and species detail. In 2012 all video data was reanalysed in April 2012. Methods and site locations are described in CCW Marine Monitoring Report No. 24a. A separate report (CCW Marine Monitoring report No, 24b) details exact quality control and standard operating procedures in relation to survey methodologies used. Additional ground truthing was carried out in September 2004 by a team of 6 divers at 22 sites. Species and habitat data entered into Marine Recorder.
 

Keywords

Keywords

GEMET - INSPIRE themes, version 1.0
Type
Theme

Citation

Date (Publication)
2008-06-01
Code
geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus
  • Video survey
  • benthic marine habitats
Type
Theme

Citation

Date (Publication)
2023-12-31
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords

Keywords

SeaDataNet Parameter Discovery Vocabulary
  • Macroalgae and seagrass taxonomy-related counts
  • Zoobenthos taxonomic abundance
Type
Theme

Citation

Date (Revision)
2021-01-06
Code
geonetwork.thesaurus.external.theme.rdf+xml
 

Spatial Reference System

Code
Latitude and Longitude (EPSG::4326)
 

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

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

© CCGC/CCW 2006 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

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
2024-12-09T12:38:15.335Z
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

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