Surveys of Potential Oystercatcher Prey, Pembrey Sands (2009)
The Burry Inlet Special Protection Area (SPA) supports nationally and internationally important populations of wildfowl and waders. Countryside Council for Wales (CCW) are studying the food requirements of oystercatcher and knot, to develop monitoring targets and to assess the implications of shellfish fisheries on the bird populations. As part of that study, surveys of the cockle and mussel stocks in the Burry Inlet have been carried out every autumn since 2004, using a standard methodology. Significant populations of oystercatcher also feed in the Three Rivers and along Pembrey Sands and it is known that they are part of the same population that feed in the Burry Inlet SPA, but the information is limited. Data from the British Trust for Ornithology (BTO) on oystercatcher distribution along the Pembrey coast showed that they concentrate in the central section of the Sands and confirmed that they are feeding at low tide. It is known from previous survey work that the sediment fauna found along the Pembrey coast are likely to include a variety of shellfish (but not cockles and mussels), however data is limited. The purpose of this data capture was to provide data on the abundance and distribution of the potential prey species for the oystercatcher along the Pembrey Sands due to limited data availability. This data aimed to determine the potential prey of the oystercatcher in Pembrey Sands, examining the abundance and distribution of the sediment fauna. Previous findings showed that high numbers of the main prey species of the oyster catchers (cockles and mussels) were not found in the area.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS115123
- Metadata Language
- English
- Lineage
-
The methodology for Pembrey Sands was adapted from that used for the cockle surveys in the Burry Inlet. A total of 97 stations with 250 m spacing were sampled from a grid of 161 stations, using a 0.1m2 quadrat / 2 mm mesh sieve. All sampled stations extended from the mid tide level to below the likely low tide level in Pembrey Sands. Bivalves that were retained in the sieve were identified, counted and their shell lengths were measured with vernier callipers. Additionally counts of polychaetes >2 cm body length were recorded, and tube dwelling and tubeless polychaetes were distinguished. Observations made by four surveyors (experience unknown). The methodology used has been applied to surveys in the Bury Inlet since 2004 and is astandard methodology (Moore, 2009).
Further information can be found in the CCW report 'Surveys of potential oystercatcher prey Pembrey Sands 2009'.
- Dataset Reference Date (Publication)
- 2009-10-26
Extent
Extent
- Geographic Extent
- SIR GAERFYRDDIN - CARMARTHENSHIRE
))
Vertical Extent
- Medin Extent Keyword
-
benthic boundary layer
Distribution
- Format Type and Description
-
-
Documents
(
)
- Specification
-
[A] Raw data held in MS Excel and MapInfo [B] Summary statistics and calculations held in MS Excel [C] Report - MS Word
-
Documents
(
)
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
-
The methodology for Pembrey Sands was adapted from that used for the cockle surveys in the Burry Inlet. A total of 97 stations with 250 m spacing were sampled from a grid of 161 stations, using a 0.1m2 quadrat / 2 mm mesh sieve. All sampled stations extended from the mid tide level to below the likely low tide level in Pembrey Sands. Bivalves that were retained in the sieve were identified, counted and their shell lengths were measured with vernier callipers. Additionally counts of polychaetes >2 cm body length were recorded, and tube dwelling and tubeless polychaetes were distinguished. Observations made by four surveyors (experience unknown). The methodology used has been applied to surveys in the Bury Inlet since 2004 and is astandard methodology (Moore, 2009).
Further information can be found in the CCW report 'Surveys of potential oystercatcher prey Pembrey Sands 2009'.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
-
NRW Thesaurus
-
- thin tellin
- haematopus ostralegus
- oystercatchers
- shellfish
- bird food
- bivalve molluscs
- lamellibranchia (pelecypoda) (bivalvia)
- angulus tenuis
- Pembrey
- birds of prey (raptors) (see also specific species)
- Type
- Theme
Citation
- Date (Publication)
- 2025-01-08
Keywords
-
SeaDataNet Parameter Discovery Vocabulary
- Type
- Theme
Citation
- Date (Publication)
- 2024-06-19
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
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.
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313135313233 XML
- Metadata Language
- English
- Parent Identifier
-
Cockle and Mussel Stock (bird food) Surveys in the Burry Inlet 2005-2009
NRW_DS108873
- Resource type
- Dataset
- Metadata Date
- 2026-03-03T12:51:20.47Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0