Intertidal Monitoring of Ophelia bicornis in Carmarthen Bay and Estuaries Special Area of Conservation (SAC) in 2004

The purpose of this data capture was to determine whether Ophelia bicornis found at two sites within the lower Loughor estuary during Phase 1 surveys carried out by Countryside Council for Wales (CCW) were still present. The polychaete Ophelia bicornis is known from only a few locations in the UK and is therefore of national importance. It is particularly vulnerable to changes in the granulometric composition of the sediment, pollution and trampling. The purpose of this data capture to determine whether O. bicornis found at two sites within the lower Loughor estuary during Phase 1 surveys carried out by CCW were still present.

Identification

Identifier
NRW_DS102006
Alternative Title
  • 2004 CCW / IECS Carmarthen Bay and Estuaries SAC Ophelia bicornis monitoring (MRCCW30200000011)
Metadata Language
English
Lineage

Ophelia bicornis found at two sites within the lower Loughor estuary during CCW intertidal Phase 1 surveys. Quadrat sampling was carried out in areas of suitable sediment at 25 m intervals along four 75 m transects spaced 25 m apart. At each sample site a GPS position and photograph were taken and sediment was removed (to a depth of 20cm) from a 50 x 50 cm area and passed through a 0.5 mm sieve. Any animals retained in the sieve were identified and returned to the sediment. Any Ophelia bicornis found were identified and an example preserved and returned to the laboratory for formal identification. All other samples were returned to the sediment. Confidence in this dataset is high. Professional taxonomic experts were used to confirm the identity of polychaetes collected.
Dataset Reference Date (Publication)
2008-12-31

Temporal Extent

Begin date
2004-09-14
End date
2004-09-15
 
Topic category
  • Biota
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Originator
  Countryside Council for Wales (CCW) -
Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW
http://naturalresourceswales.gov.uk/splash?orig=/
Originator
  Hull University. Institute Of Estuarine And Coastal Studies -
The University of Hull, Cottingham Road, Hull, HU6 7RX
http://www.hull.ac.uk/iecs/
 

Extent

Extent

Geographic Extent
ABERTAWE - SWANSEA
Geographic Extent
Wales (WLS)
N
W
E
S
Map representing the geographic extent of the dataset


 

Vertical Extent

Medin Extent Keyword

benthic boundary layer
 
 

Distribution

Format Type and Description
  • Database ( Marine Recorder Online - Version 2.09.02 )

    Specification

    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

This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
Degree
false
Lineage

Ophelia bicornis found at two sites within the lower Loughor estuary during CCW intertidal Phase 1 surveys. Quadrat sampling was carried out in areas of suitable sediment at 25 m intervals along four 75 m transects spaced 25 m apart. At each sample site a GPS position and photograph were taken and sediment was removed (to a depth of 20cm) from a 50 x 50 cm area and passed through a 0.5 mm sieve. Any animals retained in the sieve were identified and returned to the sediment. Any Ophelia bicornis found were identified and an example preserved and returned to the laboratory for formal identification. All other samples were returned to the sediment. Confidence in this dataset is high. Professional taxonomic experts were used to confirm the identity of polychaetes collected.
 

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
  • Marine Recorder
  • Rare species Ophelia bicornis
  • Carmarthen Bay and Estuaries SAC
Type
Theme

Citation

Date (Publication)
2026-08-27
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords

Keywords

SeaDataNet Parameter Discovery Vocabulary
Type
Theme

Citation

Date (Publication)
2024-06-19
Code
geonetwork.thesaurus.external.theme.rdf+xml
 

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

Content

Content Information

NRW Profile

Custom Elements

NRW Related Title

Intertidal Monitoring of ophelia bicornis in Carmarthen Bay and Estuaries SAC in 2004
 

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 to this data. NRW may release, publish or disseminate it freely.
 

Use Constraints

Use constraints type
Other restrictions
Other constraints

© CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose.
 

Attribution Statement

Other constraints

Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
 

Licence

Other constraints
Open Government Licence
 
 
 

Metadata

Metadata

File Identifier
4f4c4942-4343-5764-6473-313032303036 XML
Metadata Language
English
Parent Identifier
Across Wales Intertidal Monitoring Survey

NRW_DS109834
Resource type
Dataset
Metadata Date
2026-10-19T14:35:06.342Z
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