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.

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

Temporal Extent

Begin date: 2004-08-23

End date: 2005-07-17

Topic category

Oceans

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

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)

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

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

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

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

Code: Latitude and Longitude (EPSG::4326)

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

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

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

Access the portal

Full access to the portal and metadata.

Across Wales Drop-down Video monitoring 2004-2005

Identification

Temporal Extent

Extent

Extent

Vertical Extent

Vertical Extent

Distribution

Quality

Data quality

Keywords

Keywords

Citation

Keywords

Citation

Keywords

Citation

Spatial Reference System

Content

Content Information

NRW Profile

Custom Elements

Constraints

Constraints

Limitations on Public Access and Use

Access Constraints Directive

Access Constraints Text

Use Constraints

Metadata

Metadata

Publishing Body