Fideo cwymp-gamera wystrysen frodorol hanesyddol (ostrea edulis) yn Sir Benfro, De Cymru -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.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS114567
- Teitl Amgen
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- 2010 CCW Drop down video survey of historical native oyster Ostrea edulis habitat in Pembrokeshire MRCCW31000000002
- Laith Metadata
- English
- Datganiad
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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.
- Gwybodaeth ychwanegol
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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)
- 2011-09-30
Rhychwant
Rhychwant
- Hyd
- Irish Sea
- Hyd
- Carmarthen Bay
- Hyd
- SIR BENFRO - PEMBROKESHIRE
))
Maint Fertigol
- Maint allweddair MEDIN
-
benthic boundary layer
Maint Fertigol
- Gwerth lleiaf
- -2
- Gwerth uchaf
- -40
- System Gyfeirio Cydlynu Fertigol
Dosbarthiad
Dosbarthiad
- Fformat - Math a Disgrifiad
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Documents
(
)
- Math
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[A] Published report - Electronic version (PDF and MS Word)
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Delimited
(
)
- Math
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[B] Raw data - MS Excel
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Database
(
)
- Math
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[C] Raw data - Marine Recorder - survey number: MRCCW31000000002
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Geographic Information System
(
)
- Math
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[D] Map of survey stations - JPEG maps, and digital point data (MapInfo table)
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Documents
(
)
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Cydymffurfiad
- 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
- Eglurhad
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This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Gradd
- false
- Datganiad
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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.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
-
NRW Thesaurus
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- Stackpole
- drop-down video
- native oyster
- oysters
- South Pembrokeshire
- Abyssinia Haul
- ostrea edulis
- flat oyster
- Tenby
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2025-01-08
Allweddair
-
SeaDataNet Parameter Discovery Vocabulary
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2024-06-19
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
- Teitlau cysylltiedig CNC
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Drop down video of historical native oyster ostrea edulis habitat in Pembrokeshire, south Wales CONFIDENTIAL
- Teitlau cysylltiedig CNC
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Drop down video of historical native oyster ostrea edulis habitat in Pembrokeshire, south Wales REDACTED
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
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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.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
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© 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.
Datganiad Priodoli
- Cyfyngiadau eraill
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Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313134353637 XML
- Laith Metadata
- English
- Dynodydd Rhiant
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Natural Resources Wales (NRW) Marine Benthic Species and Habitat Collation Held in Marine Recorder
NRW_DS114501
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2026-03-03T12:27:50.331Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0