Intertidal Monitoring of LR.Rkp.SwSed Pools in the Cardigan Bay Special Area of Conservation (SAC) 2004
Rockpools are an important sub-feature of the 'Reef' feature of the Cardigan Bay SAC, in that they provide habitats of high species richness, often with species that are restricted to rockpool habitats only. The nature of rockpools, particularly those with sediment in the bottom, provides additional challenges to developing a repeatable and reliable method for monitoring of these features. This dataset contains the results of a survey investigating the extent, distribution and species richness of LR.Rkp.SwSed (sand scoured) rockpools at Llanina Point, Cei Bach. Rockpools are an important sub-feature of the 'Reef' feature of the Cardigan Bay SAC, in that they provide habitats of high species richness, often with species that are restricted to rockpool habitats only. Taxonomic identification carried out by experienced intertidal surveyors. Positional accuracy using the dGPS is expected to be 1-5 metres. The aims for the survey of the rockpools at Llanina Point, Cei Bach were to: - map and assess the current extent and distribution of LR.Rkp.SwSed pools within this area - assess the species richness of these rockpools - record any presence of Japanese wireweed Sargassum muticum at the site.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS102032
- Alternative Title
-
- 2004 CCW / IECS Cardigan Bay SAC sediment floored rockpool monitoring MRCCW3020000000E
- Monitro Rhynglanwol: Pyllau LR.Rkp.SwSed yn ACA Bae Ceredigion yn 2004
- Metadata Language
- English
- Lineage
-
Surveys were carried out three hours either side of low water. Rockpools were chosen which could be easily relocated for future monitoring. Boundaries of distinct pools were mapped using dGPS, characteristics of the pool were recorded (dimensions, location on shore and any distinguishing features) and photographs were taken. Species present were recorded and any plants or animals which could not be identified in the field were collected for further analysis. Additional underboulder species were checked for by turning over at least ten rocks and a small net was used to catch mobile species. A note was made of time spent compiling the species list. In the case of a single large rockpool a series of sampling points measuring 1m2 were surveyed to gain a representative species list, other species that fell outside the sampling area were also noted. Timed counts were carried out over two minute periods for key characterising species (Patella vulgata , Littorina littorea, Pagurus bernhardus, Nucella lapillus, Gibbula umbilicalis) to give an indication of abundance. The rockpools at Cei Bach had previously been identified as species rich during Phase 1 survey carried out by CCW in 1996.
- Additional Information
-
Taxonomic identification carried out by experienced intertidal surveyors. Positional accuracy using the dGPS is expected to be 1-5 metres.
- Dataset Reference Date (Publication)
- 2009-01-31
Temporal Extent
- Begin date
- 2004-09-01
- End date
- 2004-09-03
- Topic category
-
- Biota
Extent
Extent
- Geographic Extent
- Wales (WLS)
))
Vertical Extent
- Medin Extent Keyword
- benthic boundary layer
Distribution
- Format Type and Description
-
-
Documents
()
- Specification
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[A] Digital versions of the contract report: Microsoft Word document(s); and an equivalent Adobe Portable Document Format version [B] MapInfo GIS layer in MapInfo Native format (Tables): - Positions of sample sites and quadrats at Cei Bach. - Boundary to rockpool at Cei Bach. - Translations from the above MapInfo Tables are retained in ESRI Shapefile and MapInfo Interchange formats. [C] Excel spreadsheet of rockpool species data. [D] Photographs of the survey site and quadrats. [E] Marine Recorder file: MRCCW3020000000E
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Documents
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
-
Surveys were carried out three hours either side of low water. Rockpools were chosen which could be easily relocated for future monitoring. Boundaries of distinct pools were mapped using dGPS, characteristics of the pool were recorded (dimensions, location on shore and any distinguishing features) and photographs were taken. Species present were recorded and any plants or animals which could not be identified in the field were collected for further analysis. Additional underboulder species were checked for by turning over at least ten rocks and a small net was used to catch mobile species. A note was made of time spent compiling the species list. In the case of a single large rockpool a series of sampling points measuring 1m2 were surveyed to gain a representative species list, other species that fell outside the sampling area were also noted. Timed counts were carried out over two minute periods for key characterising species (Patella vulgata , Littorina littorea, Pagurus bernhardus, Nucella lapillus, Gibbula umbilicalis) to give an indication of abundance. The rockpools at Cei Bach had previously been identified as species rich during Phase 1 survey carried out by CCW in 1996.
Keywords
Keywords
Keywords
- NRW Thesaurus
-
- Cardigan Bay SAC
- marine biology (subtidal biology) (littoral biology) (sublittoral biology)(intertidal biology)(see also seashore)
- Special Areas of Conservation (SAC) - SAC monitoring
- rockpools
- Llanina Point
- Cei Bach
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Keywords
- SeaDataNet Parameter Discovery Vocabulary
-
- Habitat characterisation
- Habitat extent
- Type
- Theme
Citation
- Date (Revision)
- 2021-01-06
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
-
Intertidal monitoring of a sand-scoured rockpools in Cardigan Bay SAC in 2004
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
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© 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
- File Identifier
- 4f4c4942-4343-5764-6473-313032303332 XML
- Metadata Language
- English
- Parent Identifier
-
Across Wales Intertidal Monitoring Survey
NRW_DS109834
- Resource type
- Dataset
- Metadata Date
- 2024-12-09T12:33:15.178Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0