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

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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 principle 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.

Identification

Dynodydd
Identifier
NRW_DS114567
Teitl Amgen
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
Laith Metadata
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.
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2011-09-30
Perchennog
Owner
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
Originator
  Salacia-Marine
Salacia-Marine, 91 New Road, Ynysmeudwy, Castell-Nedd Port Talbot, SA8 4PP, Wales
http://salacia-marine.co.uk/
Cychwynnwr
Originator
  Coastal Assessment Liaison and Monitoring (CALM)
Ti Cara, Point Lane, Cosheston, Pembrokeshire, SA72 4UN, Wales
<!--No website -->
 

Extent

Extent

Hyd
Geographic Extent
Irish Sea
Hyd
Geographic Extent
Carmarthen Bay
Hyd
Geographic Extent
SIR BENFRO - PEMBROKESHIRE
N
W
E
S
Map representing the geographic extent of the dataset


 

Vertical Extent

Medin Extent Keyword
benthic boundary layer

Maint Fertigol
Vertical Extent

Gwerth lleiaf
Minimum value (metres)
-2
Gwerth uchaf
Maximum value (metres)
-40
System Gyfeirio Cydlynu Fertigol
Vertical CRS
 
 

Distribution

Fformat - Math a Disgrifiad
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)

 

Quality

Ansawdd Data
Data quality

Cwmpas Ansawdd
Quality Scope
Dataset
Dataset
Cydymffurfiad
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

Allweddair
Keywords

GEMET - INSPIRE themes, version 1.0
Math
Type
Theme
Theme

Dyfyniad
Citation

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

Allweddair
Keywords

NRW Thesaurus
  • ostrea edulis
  • oysters
  • native oyster
  • South Pembrokeshire
  • flat oyster
  • Tenby
  • Stackpole
  • Abyssinia Haul
  • drop-down video
Math
Type
Theme
Theme

Dyfyniad
Citation

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

Allweddair
Keywords

SeaDataNet Parameter Discovery Vocabulary
  • Habitat characterisation
  • Habitat extent
  • Zoobenthos taxonomic abundance
Math
Type
Theme
Theme

Dyfyniad
Citation

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

Spatial Reference System

Code
Latitude and Longitude (EPSG::4326)
 

Content

Gwybodaeth Cynnwys
Content Information

Proffil CNC
NRW Profile

Elfennau CNC
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

Constraints

Limitations on Public Access and Use

Math o Gyfyngiad
Restriction type
Other restrictions
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

Cyfyngiadau Defnyddio
Use constraints type
Other restrictions
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

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313134353637 XML
Laith Metadata
Metadata Language
English
Parent Identifier
Natural Resources Wales (NRW) Marine Benthic Species and Habitat Collation Held in Marine Recorder

NRW_DS114501
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2024-12-09T12:32:49.064Z
Enw Safonol Metadata
Metadata Standard Name
NRW
Fersiwn Metadata
Metadata Standard Version

1.0

Pwynt Cyswllt
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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