Intertidal Monitoring of Sabellaria Reef in Cardigan Bay Special Areas of Conservation (SAC) 2007
Gwaith monitro rhynglanwol ar riff Sabellaria yn ACA Bae Ceredigion yn 2007

  • English
  • 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) was therefore required to report on a regular basis on whether features are in favourable conservation status.


Honeycomb reef worm Sabellaria alveolata is a sedentary, tube-dwelling polychaete most commonly found on rocky substrata in the lower shore and shallow subtidal zones of marine and estuarine areas. The honeycomb reef worm is a UK BAP Priority Habitat (BAP habitats are now Habitats of Principal Importance/Priority Habitats).


Cardigan SAC is designated for a number of features, including Bottlenosed dolphins, Sandbanks, Reefs and Sea Caves, and some intertidal features including areas of bedrock and boulder/cobble habitats and many areas are characterised by biogenic reef formed by the honeycomb reef worm Sabellaria alveolata.


This dataset includes the results of a survey of the biogenic reef formed by the honeycomb reef worm Sabellaria alveolata at two sites within Cardigan Bay SAC. The purpose of this data capture was to establish sites for long term monitoring and collect baseline/reference data using appropriate methods. This is a high quality survey carried out by an experienced team of marine biologists.

Identification

Dynodydd
Identifier
NRW_DS111178
Teitl Amgen
Alternative Title
  • 2007 CCW/ASML Cardigan Bay SAC Sabellaria reef monitoring (MRCCW16300000002)
Laith Metadata
Metadata Language
English
Lineage

Methodology used was a modified version of the transect survey methodology developed for Pen Llyn a'r Sarnau SAC (2008).


Existing maps of Sabellaria extent were used to define the survey area within which a series of 11 transects were drawn at 50 m intervals approximately perpendicular to the coastline.


Along each transect notes were made on habitat, community and condition/age of Sabellaria reef. Photographs were also taken to illustrate habitat and condition of the reef.


1 or 2 stations were used per transect for quadrat surveys. At each survey station a gridded 0.25m2 quadrat was placed randomly 15 times within a radius of 10m.


Digital photographs were taken of each quadrat and a full survey was carried out on the first 5 quadrats to record % cover of standing water, total Sabellaria and live Sabellaria, key species/taxa, other typical fauna and flora. The other 10 quadrats were used to carry out additional recording of Sabellaria cover.


The extent of the reef was mapped using the track function of handheld GPS units.


Phase 1 surveys of intertidal habitats in the SAC were carried out in the SAC in 1996 and 2003 (Brazier et al. 2007), providing detailed mapping of the intertidal biotopes with some information on characterizing species. Surveys of Sabellaria reefs in the SAC were carried out for CCW in 2004 (Boyes et al. 2008). Additional mapping of Sabellaria reef extent at Aberaeron was carried out by CMACS Ltd. (sub-contracted by Atkins Ltd.) in August 2006 as part of an Environmental Assessment for proposed Aberaeron North Beach Coastal Defence Work (unpublished data provided by Atkins Ltd.).
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2025-06-10

Temporal Extent

Begin date
2007-05-14
End date
2007-05-18
 
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
  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
SIR CEREDIGION - CEREDIGION
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
  • Database ( Marine Recorder Online - Version 2.09.02 )

    Specification

    Marine Recorder

 

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

Methodology used was a modified version of the transect survey methodology developed for Pen Llyn a'r Sarnau SAC (2008).


Existing maps of Sabellaria extent were used to define the survey area within which a series of 11 transects were drawn at 50 m intervals approximately perpendicular to the coastline.


Along each transect notes were made on habitat, community and condition/age of Sabellaria reef. Photographs were also taken to illustrate habitat and condition of the reef.


1 or 2 stations were used per transect for quadrat surveys. At each survey station a gridded 0.25m2 quadrat was placed randomly 15 times within a radius of 10m.


Digital photographs were taken of each quadrat and a full survey was carried out on the first 5 quadrats to record % cover of standing water, total Sabellaria and live Sabellaria, key species/taxa, other typical fauna and flora. The other 10 quadrats were used to carry out additional recording of Sabellaria cover.


The extent of the reef was mapped using the track function of handheld GPS units.


Phase 1 surveys of intertidal habitats in the SAC were carried out in the SAC in 1996 and 2003 (Brazier et al. 2007), providing detailed mapping of the intertidal biotopes with some information on characterizing species. Surveys of Sabellaria reefs in the SAC were carried out for CCW in 2004 (Boyes et al. 2008). Additional mapping of Sabellaria reef extent at Aberaeron was carried out by CMACS Ltd. (sub-contracted by Atkins Ltd.) in August 2006 as part of an Environmental Assessment for proposed Aberaeron North Beach Coastal Defence Work (unpublished data provided by Atkins Ltd.).
 

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
  • Cardigan Bay SAC
  • Sabellaria reef detail
  • Sabellaria reef wide scale
  • Marine Recorder
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

NRW Related Title

Intertidal SAC monitoring Cardigan Bay SAC May 2007
NRW Related Title

Intertidal SAC monitoring Cardigan Bay SAC May 2008
 

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.
 

Attribution Statement

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.
 

Licence

Other constraints
Open Government Licence
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313131313738 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
2026-10-19T09:05:35.052Z
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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