Intertidal Monitoring of Eelgrass Zostera noltii Beds in Carmarthen Bay 2004
The seagrass Zostera is a flowering plant typically found in sheltered areas with a muddy / sandy substratum. Zostera beds are of significant ecological importance in that they support a diverse community of infaunal and epibenthic species, algal and epiphytic species and provide refuge and feeding sites for fish and crustaceans (particularly juveniles). Furthermore, Zostera beds are an important food source for wildfowl (e.g. Brent geese). Zostera beds can be an important factor in coastal defence. The root networks stabilise the sediment, while the plants encourage sedimentation through sediment particle trapping and a certain degree of wave attenuation. This together with their role in supporting commercially valuable fish and crustacean species means that Zostera beds are also of economic importance. However human activity in the coastal zone (pollution, dredging boat mooring etc) can affect its distribution or even destroy the beds completely. The purpose of this data capture was to determine and map the extent, density and condition of Zostera noltii identified in previous years at Llanrhidian Sands and Penrhyn Gwyn in the Burry Inlet, record any damage or disease of the Zostera, record the presence of epiphytes and ephemeral algal species on the beds, record the presence of mussel crumble, and develop an index of damage.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS102036
- Alternative Title
-
- 2004 CCW / IECS Carmarthen Bay & Estuaries SAC Zostera noltii survey (MRCCW31600000006)
- Metadata Language
- English
- Lineage
-
Sites were chosen as broad areas where Zostera noltii had previously been recorded. At each site transect lines (100 m apart) were chosen to correspond with specific northing lines and sampling was carried out at 25 m intervals due west or due east of these transect lines. At each sample position, a GPS coordinate and photograph was taken and a 50 cm x 50 cm quadrat was used for recording percentage cover of Z. noltii, cover of Enteromorpha sp., mussel crumble (small aggregations of mussels, cockles and shell debris) and the associated faunal species (visible on the surface). A brief description of the substratum was also noted and the presence and severity of wasting disease (Labyrinthula zosterae) recorded, based on a scale produced by Burdick et al. (1993). The CCW intertidal phase 1 survey recorded the Zostera noltii in the Burry Inlet during the year 2000. IECS surveys provide a further understanding of the resource in the Burry Inlet.
- Dataset Reference Date (Publication)
- 2009-01-31
Temporal Extent
- Begin date
- 2004-09-13
- End date
- 2004-09-15
- Topic category
-
- Biota
Extent
Extent
- Geographic Extent
- Wales (WLS)
))
Vertical Extent
- Medin Extent Keyword
-
benthic boundary layer
Distribution
- Format Type and Description
-
-
Database
(
Marine Recorder Online - Version 2.09.02
)
- Specification
-
Marine Recorder
-
Database
(
Marine Recorder Online - Version 2.09.02
)
Quality
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
-
This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Degree
- false
- Lineage
-
Sites were chosen as broad areas where Zostera noltii had previously been recorded. At each site transect lines (100 m apart) were chosen to correspond with specific northing lines and sampling was carried out at 25 m intervals due west or due east of these transect lines. At each sample position, a GPS coordinate and photograph was taken and a 50 cm x 50 cm quadrat was used for recording percentage cover of Z. noltii, cover of Enteromorpha sp., mussel crumble (small aggregations of mussels, cockles and shell debris) and the associated faunal species (visible on the surface). A brief description of the substratum was also noted and the presence and severity of wasting disease (Labyrinthula zosterae) recorded, based on a scale produced by Burdick et al. (1993). The CCW intertidal phase 1 survey recorded the Zostera noltii in the Burry Inlet during the year 2000. IECS surveys provide a further understanding of the resource in the Burry Inlet.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
-
NRW Thesaurus
-
- Carmarthen Bay and Estuaries SAC
- Marine Recorder
- Zostera bed, extent quadrats
- Type
- Theme
Citation
- Date (Publication)
- 2026-08-27
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2024-06-19
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
-
Intertidal monitoring of eelgrass Zostera noltii in the Burry Inlet, Carmarthen Bay and estuaries 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
-
© 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.
Attribution Statement
- Other constraints
-
Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Licence
- Other constraints
- Open Government Licence
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313032303336 XML
- Metadata Language
- English
- Parent Identifier
-
Across Wales Intertidal Monitoring Survey
NRW_DS109834
- Resource type
- Dataset
- Metadata Date
- 2026-10-19T14:41:36.051Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0