Drop-Down Video of Historical Native Oyster (Ostrea edulis) Habitat in Pembrokeshire, South Wales (2010)

The native or flat oyster (Ostrea edulis) is a UK Biodiversity Action Plan (BAP) priority species, and it is also listed for Section 42 of the Natural Environment and Rural Communities (NERC) Act 2006 as being 'of principal importance for the purpose of conserving biodiversity in Wales.'

The native oyster has a long history as an important commercial species in Wales and elsewhere in the UK. Significant oyster beds are now restricted to Milford Haven, Swansea Bay/Mumbles and Porthcawl, although at a much reduced scale. The remaining oyster population in Wales is under threat through the spread of the protozoan parasite Bonamia ostreae, continued poor recruitment, and competition from the alien invasive slipper limpet Crepidula fornicata. The situation is exacerbated by the continued operation of a small oyster fishery in Milford Haven and Swansea Bay.

The aim of this project was to gather information on the status of historical native oyster beds off the south Pembrokeshire coast. This information will contribute to our understanding of the status of historical native oyster beds off the south Wales coast and will inform projects to reinstate oyster habitat and stock enhancement. This dataset collates the examination of drop down video of oyster beds.

Identifier: NRW_DS114567

Alternative Title

2010 CCW Drop down video survey of historical native oyster Ostrea edulis habitat in Pembrokeshire MRCCW31000000002
Fideo cwymp-gamera wystrysen frodorol hanesyddol (ostrea edulis) yn Sir Benfro, De Cymru -2010

Metadata Language: English

Lineage: Drop down video footage recorded from a survey vessel. Survey work was carried out in July 2010, resulting in video footage from 92 survey stations and sonar classification of rocky ground of a further 17 stations where deployment of video equipment was not possible. Subsequent video analysis provided basic seabed classification and recorded other factors relevant to oyster ecology including any presence of slipper limpets (Crepidula fornicata) and silt deposition.

Where oyster shells were recorded, these are not confirmed as to whether specimens are live or dead. Baseline survey of seabed. In 2012 CCW had the video footage reanalysed to identify additional species and habitat records. These were entered into the existing Marine Recorder Survey.

Additional Information: The following reports are associated with this data: - Woolmer, AP. 2011. Drop down video of historical native oyster ostrea edulis habitat in Pembrokeshire, south Wales REDACTED. Countryside Council for Wales Science Report No. 957. Bangor. - Woolmer, AP. 2011. Drop down video of historical native oyster ostrea edulis habitat in Pembrokeshire, south Wales CONFIDENTIAL. Countryside Council for Wales Science Report No. 957. Bangor.

Dataset Reference Date (Publication): 2011-09-30

Temporal Extent

Begin date: 2010-07-08

End date: 2010-07-22

Topic category

Biota

Owner

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Originator

Salacia-Marine

Salacia-Marine, 91 New Road, Ynysmeudwy, Castell-Nedd Port Talbot, SA8 4PP, Wales

http://salacia-marine.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: Carmarthen Bay

Geographic Extent: SIR BENFRO - PEMBROKESHIRE

Map representing the geographic extent of the dataset

Vertical Extent

Medin Extent Keyword: benthic boundary layer

Vertical Extent

Minimum value (metres): -2

Maximum value (metres): -40

Vertical CRS

Format Type and Description

Documents ( )

Specification

[A] Published report - Electronic version (PDF and MS Word) [B] Raw data - MS Excel and Marine Recorder - survey number: MRCCW31000000002 [C] Map of survey stations - JPEG maps, and digital point data (MapInfo table)

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 footage recorded from a survey vessel. Survey work was carried out in July 2010, resulting in video footage from 92 survey stations and sonar classification of rocky ground of a further 17 stations where deployment of video equipment was not possible. Subsequent video analysis provided basic seabed classification and recorded other factors relevant to oyster ecology including any presence of slipper limpets (Crepidula fornicata) and silt deposition.

Where oyster shells were recorded, these are not confirmed as to whether specimens are live or dead. Baseline survey of seabed. In 2012 CCW had the video footage reanalysed to identify additional species and habitat records. These were entered into the existing Marine Recorder Survey.

Keywords

GEMET - INSPIRE themes, version 1.0

Species distribution

Type: Theme

Citation

Date (Publication): 2008-06-01

Code: geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus

flat oyster
native oyster
Stackpole
Tenby
oysters
Abyssinia Haul
ostrea edulis
drop-down video
South Pembrokeshire

Type: Theme

Citation

Date (Publication): 2024-06-19

Code: geonetwork.thesaurus.local.theme.converted_nrw-keywords

Keywords

SeaDataNet Parameter Discovery Vocabulary

Zoobenthos taxonomic abundance
Habitat characterisation
Habitat extent

Type: Theme

Citation

Date (Publication): 2024-06-19

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 of historical native oyster ostrea edulis habitat in Pembrokeshire, south Wales CONFIDENTIAL

NRW Related Title: Drop down video of historical native oyster ostrea edulis habitat in Pembrokeshire, south Wales REDACTED

Constraints

Limitations on Public Access and Use

Restriction type: Other restrictions

Access Constraints Directive

Limitations: no limitations

Access Constraints Text

Other constraints: This dataset is sensitive and restricted. The sensitive data is as follows; native oyster Ostrea edulis. 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

File Identifier: 4f4c4942-4343-5764-6473-313134353637 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: 2024-11-20T15:09:34.261Z

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.

Drop-Down Video of Historical Native Oyster (Ostrea edulis) Habitat in Pembrokeshire, South Wales (2010)

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