Intertidal Monitoring of Eelgrass (Zostera noltii) Beds in Carmarthen Bay 2004

  • English
  • wel
  • All

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

Dynodydd
Identifier
NRW_DS102036
Teitl Amgen
Alternative Title
  • 2004 CCW / IECS Carmarthen Bay and Estuaries SAC Burry Inlet Zostera noltii monitoring MRCCW31600000006
  • Monitro Rhynglanwol: Zostera noltii ym Mae Caerfyrddin yn 2004
Laith Metadata
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.
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2009-01-31
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)
Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW
http://naturalresourceswales.gov.uk/splash?orig=/
Cychwynnwr
Originator
  Hull University. Institute Of Estuarine And Coastal Studies
The University of Hull, Cottingham Road, Hull, HU6 7RX
http://www.hull.ac.uk/iecs/
Cychwynnwr
Originator
  Coastal Assessment Liaison and Monitoring (CALM)
Ti Cara, Point Lane, Cosheston, Pembrokeshire, SA72 4UN, Wales
<!--No website -->
 

Extent

Extent

Hyd
Geographic Extent
Wales (WLS)
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 layer in MapInfo Native format (Tables): - Positions of transects and quadrats in the Burry Inlet. - Translations from the above MapInfo Tables are retained in ESRI Shapefile and MapInfo Interchange formats. [C] Excel spreadsheet of transect and quadrat data. [D] Photographs of the survey sites and quadrats. [E] Marine Recorder file: MRCCW31600000006

 

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

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

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
  • Carmarthen Bay and Estuaries SAC
  • Burry Inlet
  • Llanrhidian Sands,Burry Inlet
  • Penrhyn Gwyn
  • zostera noltii
  • marine biology (subtidal biology) (littoral biology) (sublittoral biology)(intertidal biology)(see also seashore)
  • Special Areas of Conservation (SAC) - SAC monitoring
  • sediment flats
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
  • Macroalgae and seagrass infection and damage
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Adolygu)
Date (Revision)
2021-01-06
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 monitoring of eelgrass Zostera noltii in the Burry Inlet, Carmarthen Bay and estuaries SAC in 2004
 

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.
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313032303336 XML
Laith Metadata
Metadata Language
English
Parent Identifier
Natural Resources Wales (NRW) Marine Benthic Species and Habitat Collation Held in Marine Recorder

NRW_DS114501
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2024-12-09T12:33:10.515Z
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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