Shellfish Stocks, Oystercatcher and Knot (bird) Modelling Data for the Burry Inlet and Three Rivers (2004-2007)
Data rhagfynegol yn ymwneud a chregynbysgod, piod mor a phibyddion yr aber (adar) ar gyfer Porth Tywyn a'r Tair Afon (2004-2007)

  • English
  • wel
  • All

The Burry Inlet Special Protection Area (SPA) supports nationally and internationally important populations of wildfowl and waders which feed on the mudflats and sandflats over the winter period. Oystercatcher feed predominantly on cockles, and knot feed on a range of prey including cockle spat. CCW commissioned a series of studies to determine the food requirements of oystercatcher and knot, to develop conservation objectives, monitoring targets and to assess the implications of cockle and mussel fishing scenarios on the bird populations. The latest of which is published as CCW Marine Monitoring Report no. 65. The purpose of this project was to extend previous modelling to incorporate both the Burry Inlet and Three Rivers in order to determine the inter-reliance of the sites and how environmental change (e.g. changes in shellfishing, habitat loss, changes in human disturbance, climate change and changes in population size) affects foraging animal populations. This information will be used to help inform management of the SPA.

Identification

Dynodydd
Identifier
NRW_DS109818
Teitl Amgen
Alternative Title
  • Predicting the effect of shellfish stocks on the oystercatcher and knot populations of the Burry Inlet and Three Rivers
Laith Metadata
Metadata Language
English
Lineage

An individual behaviour-based model (IBM) is used to predict the food requirements of a bird population. The model requires information on bird foraging behaviour together with site-specific data on bird numbers, and the size and distribution of cockle and mussel stocks. The following datasets were collated for the model. 1. Bird population size in the Burry Inlet and Three Rivers 2. Long-term shellfish stocks in the Burry Inlet 3. Detailed shellfish stock estimates in the Burry Inlet and Three Rivers 4. Identification of cockle patches in the Burry Inlet and Three Rivers 5. Shellfish removed by shellfishing in the Burry Inlet and Three Rivers This data was collected under different projects. The methodologies on how this data was collected is available elsewhere (e.g. Moore, 2009, Banks et al., 2007) The latest version of the model MORPH is used. MORPH tracks the foraging location, body condition and ultimate fate of each individual within an animal population. The modelled data builds on work carried out by Centre for Ecology and Hydrology (Dorset) that modelled shellfish stocks, oystercatch and knot for the Dee Estuary, Traeth Lafan and Burry Inlet in. Previous data is archived in project 158 (media no 103 and 486). This work is now undertaken by Bournemouth University.
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2009-02-06

Temporal Extent

Begin date
2004-01-01
End date
2007-12-31
 
Categori pwnc
Topic category
  • Biota
    Biota
Perchennog
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
Originator
  Various -
Enquiries Unit, Maes y Fynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW
http://naturalresourceswales.gov.uk/splash?orig=/
 

Extent

Extent

Hyd
Geographic Extent
ABERTAWE - SWANSEA
Hyd
Geographic Extent
SIR GAERFYRDDIN - CARMARTHENSHIRE
N
W
E
S
Map representing the geographic extent of the dataset


 

Vertical Extent

Medin Extent Keyword

benthic boundary layer
 
 

Distribution

Fformat - Math a Disgrifiad
Format Type and Description
  • Documents ( )

    Specification

    Excel spreadsheets, word documents, pdfs and .PAR files

 

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

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

An individual behaviour-based model (IBM) is used to predict the food requirements of a bird population. The model requires information on bird foraging behaviour together with site-specific data on bird numbers, and the size and distribution of cockle and mussel stocks. The following datasets were collated for the model. 1. Bird population size in the Burry Inlet and Three Rivers 2. Long-term shellfish stocks in the Burry Inlet 3. Detailed shellfish stock estimates in the Burry Inlet and Three Rivers 4. Identification of cockle patches in the Burry Inlet and Three Rivers 5. Shellfish removed by shellfishing in the Burry Inlet and Three Rivers This data was collected under different projects. The methodologies on how this data was collected is available elsewhere (e.g. Moore, 2009, Banks et al., 2007) The latest version of the model MORPH is used. MORPH tracks the foraging location, body condition and ultimate fate of each individual within an animal population. The modelled data builds on work carried out by Centre for Ecology and Hydrology (Dorset) that modelled shellfish stocks, oystercatch and knot for the Dee Estuary, Traeth Lafan and Burry Inlet in. Previous data is archived in project 158 (media no 103 and 486). This work is now undertaken by Bournemouth University.
 

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
  • cockles
  • Three Rivers
  • cerastoderma edule (previously known as cardium edule)
  • knots
  • calidris canutus
  • mussels
  • shellfish
  • oystercatchers
  • Special Protection Areas (SPAs) (see also proposed Special Protection Area pSPA)
  • unionidae
  • haematopus ostralegus
  • Burry Inlet
  • MORPH
  • environmental modelling
Math
Type
Theme
Theme

Dyfyniad
Citation

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

Allweddair
Keywords

SeaDataNet Parameter Discovery Vocabulary
Math
Type
Theme
Theme

Dyfyniad
Citation

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

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

Content

Gwybodaeth Cynnwys
Content Information

Proffil CNC
NRW Profile

Elfennau CNC
Custom Elements

 

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

There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
 

Use Constraints

Cyfyngiadau Defnyddio
Use constraints type
Other restrictions
Other restrictions
Other constraints

© CNC/NRW 2009 There are no use restrictions on this data. Recipients may re-use, reproduce, disseminate this data free of charge in any format or medium, provided they do so accurately, acknowledging both the source and NRW's copyright, and do not use it in a misleading context. It is the recipient's responsibility to ensure the data is fit for the intended purpose, that dissemination or publishing does not result in duplication, and that it is fairly interpreted. Advice on interpretation should be sought where required. To avoid re-using old data, users should periodically obtain the latest version from the original source.
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313039383138 XML
Laith Metadata
Metadata Language
English
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2026-09-28T11:09:41.537Z
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

Access the portal