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

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.

Identifier: NRW_DS114945

Alternative Title

Gwaith Monitro Rhynglanwol ar Faint y Morfa Heli yn ACA Bae Caerfyrddin ac Aberoedd 2009

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).

Dataset Reference Date (Publication): 2012-06-30

Temporal Extent

Begin date: 2009-09-21

End date: 2009-09-22

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). Marine and Freshwater Ecosystems Group

Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://www.ccw.gov.uk

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

Geographic Extent: ABERTAWE - SWANSEA

Geographic Extent: SIR GAERFYRDDIN - CARMARTHENSHIRE

Map representing the geographic extent of the dataset

Vertical Extent

Medin Extent Keyword: benthic boundary layer

Format Type and Description

Documents 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.

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
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

GEMET - INSPIRE themes, version 1.0

Type: Theme

Citation

Date (Publication): 2008-06-01

Code: geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus

intertidal
Carmarthen Bay and Estuaries SAC
saltmarsh (salt-marsh) (salt marsh)

Type: Theme

Citation

Date (Publication): 2023-12-31

Code: geonetwork.thesaurus.local.theme.converted_nrw-keywords

Keywords

SeaDataNet Parameter Discovery Vocabulary

Habitat characterisation
Habitat extent

Type: Theme

Citation

Date (Revision): 2021-01-06

Code: geonetwork.thesaurus.external.theme.rdf+xml

Keywords

Integrated Public Sector Vocabulary

MONITORING

Type: Theme

Citation

Date (Revision): 2013-04-03

Code: geonetwork.thesaurus.external.theme.subjects

Code: British National Grid (EPSG::27700)

Content Information

NRW Profile

Custom Elements

NRW Related Title: Intertidal SAC monitoring Carmarthen Bay SAC September 2009

Constraints

Limitations on Public Access and Use

Restriction type: 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

Use constraints type: 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

File Identifier: 4f4c4942-4343-5764-6473-313134393435 XML

Metadata Language: English

Parent Identifier: Across Wales Intertidal Monitoring Survey
NRW_DS109834

Resource type: Dataset

Metadata Date: 2024-05-31T09:27:41.003Z

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

Full access to the portal and metadata.

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

Identification

Temporal Extent

Extent

Extent

Vertical Extent

Distribution

Quality

Data quality

Keywords

Keywords

Citation

Keywords

Citation

Keywords

Citation

Keywords

Citation

Spatial Reference System

Content

Content Information

NRW Profile

Custom Elements

Constraints

Constraints

Limitations on Public Access and Use

Access Constraints Directive

Access Constraints Text

Use Constraints

Metadata

Metadata

Publishing Body