Intertidal Monitoring of Saltmarsh Extent in Carmarthen Bay and Estuaries Special Areas of Conservation (SAC) 2009

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  • wel
  • All

The Habitats Directive establishes that the management of Special Areas of Conservation (SACs) should aim to achieve the favourable conservation status of habitat and species features listed within its Annex I and Annex II. For SACs in Wales, the Countryside Council for Wales (CCW) is therefore required to report on a regular basis on whether features are in favourable conservation status. Carmarthen Bay SAC was designated for five Annex I intertidal habitat features: Estuaries; Mudflats and sandflats not covered by seawater at low tide; Large shallow inlets and bays; Salicornia and other annuals colonising mud and sand; Atlantic salt meadows (Glauco- Puccinellietalia maritimae). Specific areas of interest include saltmarsh fringing the Burry Inlet. The Habitats Directive establishes that the management of Special Areas of Conservation (SACs) should aim to achieve the favourable conservation status of habitat and species features listed within its Annex I and Annex II. Data was captured to, map the 2009 boundary for comparison with previous boundaries; record patches away from the main saltmarsh; take viewpoint photographs to enable a quick comparison of boundaries on future visits. All surveys completed by professional and experienced marine field surveyors. Data quality and confidence considered high.

Identification

Dynodydd
Identifier
NRW_DS114945
Teitl Amgen
Alternative Title
  • Gwaith Monitro Rhynglanwol ar Faint y Morfa Heli yn ACA Bae Caerfyrddin ac Aberoedd 2009
Laith Metadata
Metadata Language
English
Lineage

The saltmarsh along the northern shore of the River Loughor was mapped between the bridge at Loughor and Penrhyn Gwyn. Three surveyors walked along the edge of the dense marsh (Spartina anglica and Salicornia) with a handheld GPS unit automatically taking a track fix every few seconds (typically 5 seconds). Outlying clumps of marsh were recorded as target notes. Indentations in the saltmarsh boundary were only mapped if believed to be a significant feature (anything over 25 m in width). Small inlets, bumps and kinks were ignored and a resolution of 25 m was mapped with a straight line mapped across the indent. Outlying clumps of marsh were recorded as target notes. Indentations in the saltmarsh boundary were only mapped if believed to be a significant feature (anything over 25 m in width). Small inlets, bumps and kinks were ignored and a resolution of 25 m was mapped with a straight line mapped across the indent. Mapping the boundary on the Llanrhidian Marshes on the southern shore required a quad bike as the area to be covered was much greater. A small area was mapped by quad bike at Salthouse Point during the survey, following the same protocol as outlined above. The remaining and much more extensive boundary between Salthouse Point and Berges Island was mapped in early March 2010 by M. Farleigh (student in association with CCW). In addition to the mapping, viewpoint photographs from positions recorded by GPS were taken at five points on either side of the estuary. This survey repeats some work completed in 2004 by IECS (Boyes and Brazier 2008).
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2012-06-30
Perchennog
Owner
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
Originator
  Countryside Council for Wales (CCW). Marine and Freshwater Ecosystems Group
Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://www.ccw.gov.uk
Cychwynnwr
Originator
  Aquatic Survey and Monitoring Ltd (ASML)
Whitfield Brow, Bollihope, Frosterley, Weardale, Co. Durham, DL13 2SZ, England
http://www.marineseen.com/aquatic_survey_and_monitoring.htm
 

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

    [A] Digital versions of the contract report: Microsoft Word document(s); and an equivalent Adobe Portable Document Format version. [B] MapInfo GIS layers in MapInfo Native format (Tables): - Boundaries, tracks and target notes [C] Photographs of the area, sites, samples and quadrats.

 

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

The saltmarsh along the northern shore of the River Loughor was mapped between the bridge at Loughor and Penrhyn Gwyn. Three surveyors walked along the edge of the dense marsh (Spartina anglica and Salicornia) with a handheld GPS unit automatically taking a track fix every few seconds (typically 5 seconds). Outlying clumps of marsh were recorded as target notes. Indentations in the saltmarsh boundary were only mapped if believed to be a significant feature (anything over 25 m in width). Small inlets, bumps and kinks were ignored and a resolution of 25 m was mapped with a straight line mapped across the indent. Outlying clumps of marsh were recorded as target notes. Indentations in the saltmarsh boundary were only mapped if believed to be a significant feature (anything over 25 m in width). Small inlets, bumps and kinks were ignored and a resolution of 25 m was mapped with a straight line mapped across the indent. Mapping the boundary on the Llanrhidian Marshes on the southern shore required a quad bike as the area to be covered was much greater. A small area was mapped by quad bike at Salthouse Point during the survey, following the same protocol as outlined above. The remaining and much more extensive boundary between Salthouse Point and Berges Island was mapped in early March 2010 by M. Farleigh (student in association with CCW). In addition to the mapping, viewpoint photographs from positions recorded by GPS were taken at five points on either side of the estuary. This survey repeats some work completed in 2004 by IECS (Boyes and Brazier 2008).
 

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
  • intertidal
  • Carmarthen Bay and Estuaries SAC
  • saltmarsh (salt-marsh) (salt marsh)
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
Math
Type
Theme
Theme

Dyfyniad
Citation

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

Allweddair
Keywords

Integrated Public Sector Vocabulary
  • MONITORING
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Adolygu)
Date (Revision)
2013-04-03
Code
geonetwork.thesaurus.external.theme.subjects
 

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

Content

Gwybodaeth Cynnwys
Content Information

Proffil CNC
NRW Profile

Elfennau CNC
Custom Elements

NRW Related Title

Intertidal SAC monitoring Carmarthen Bay SAC September 2009
 

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

The following data is considered OS derived data and is therefore jointly owned by NRW and the Ordnance Survey. NRW may release, publish or disseminate this data freely; providing recipients are made aware of use restrictions (See general use restrictions).
 

Use Constraints

Cyfyngiadau Defnyddio
Use constraints type
Other restrictions
Other restrictions
Other constraints

© CNC/NRW and © Crown copyright 2012. All rights reserved. Natural Resources Wales, AC0000849444 Third parties seeking to re-use this data require a Licence issued by NRW. It allows re-use, reproduction and dissemination in any format or medium but only for non-commercial purposes, according to the terms and conditions of the Licence. Those seeking commercial re-use require a commercial licence available from the OS.
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313134393435 XML
Laith Metadata
Metadata Language
English
Parent Identifier
Across Wales Intertidal Monitoring Survey

NRW_DS109834
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2024-12-09T12:38:17.397Z
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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