Morfa Gwyllt Lagoon Soft Sediment Infauna Survey (2006 - 2012)

Coastal lagoons are areas of shallow, coastal salt water, wholly or partially separated from the sea by sandbanks, shingle or, less frequently, rocks. Lagoons show a wide range of geographical and ecological variation; five main sub-types have been identified in the UK, on the basis of their physiography, as meeting the definition of the Annex I habitat type. Annex 1 habitat types are those habitats which are listed under the EC Habitats Directive and form part of Special Area of Conservation (SAC) interest features. Morfa Gwyllt lagoon in classed as one of these features within the Pen Llyn a`r Sarnau/ Lleyn Peninsula and the Sarnau SAC. Morfa Gwyllt lagoon is a small percolation lagoon that consists of a depression in a shingle bar across the mouth of the Afon Dysynni in mid Wales. This is the only example of a percolation lagoon in Wales. The substrate is a mosaic of medium sand over/amongst shingle, with muddier patches within the deeper pockets, and scattered larger pebbles. Three lagoonal specialists have been found at this site: the amphipod Sphaeroma hookeri, the bryozoan Conopeum seurati and the alga Chaetomorpha linum. This dataset is a collation of data from subtidal benthic soft sediment sampling carried out within Morfa Gwyllt lagoon collected to aid the monitoring and condition assessment of this Annex 1 feature.

Identifier: NRW_DS110467

Alternative Title

2007-11 CCW Morfa Gwyllt lagoon survey MRCCW3000000004D
2012 DRAFT CCW Morfa Gwyllt Lagoon Survey MRCCW30000000077
Arolwg o isfilod gwaddodion meddal Lagwn Morfa Gwyllt
2007 - 09 CCW Morfa Gwyllt lagoon survey

Metadata Language: English

Lineage: Monitoring work is carried out at 10 randomly selected sample stations on each sampling visit. Infaunal sampling if invertebrates (per 0.005m2) and granulometry was carried out at each location whilst the salinity and temperature are recorded continuously. Supporting determinants are: National Grid References recorded using hand held GPS, salinity and temperature which are continuously recorded using a data logger. All samples are collected using a corer (0.005m2). Benthic invertebrate samples are sieved over a 0.5 mm mesh. A minimum of 10 random samples are carried out within the lagoon each year. There is high confidence in this datasets. Benthic invertebrate samples are processed by laboratories that are members of the National Marine Biological Analytical Quality Control (NMBAQC) scheme and random samples from each survey are also selected for audit by Unicomarine.

Dataset Reference Date (Publication): 2012-12-31

Temporal Extent

Begin date: 2007-01-01

End date: 2012-12-31

Topic category

Oceans
Biota

Owner

Natural Resources Wales (NRW)

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

http://naturalresources.wales/?lang=en

Originator

CCW Marine Monitoring Team

Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW

http://naturalresourceswales.gov.uk/splash?orig=/

Extent

Geographic Extent: GWYNEDD - GWYNEDD

Vertical Extent

Medin Extent Keyword: soil and sediment boundary layer

Vertical Extent

Minimum value (metres): 0

Maximum value (metres): -0.7

Vertical CRS

Format Type and Description

Database ( )

Specification

[A] Sample stations (metadata) held as MapInfo GIS layers. [B] Species data and particle size analysis data are held as excel spreadsheets and have also been imported to Marine Recorder (MRCCW3000000004D). [C] Temperature and salinity data held as raw file and Excel spreadsheets.

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: Monitoring work is carried out at 10 randomly selected sample stations on each sampling visit. Infaunal sampling if invertebrates (per 0.005m2) and granulometry was carried out at each location whilst the salinity and temperature are recorded continuously. Supporting determinants are: National Grid References recorded using hand held GPS, salinity and temperature which are continuously recorded using a data logger. All samples are collected using a corer (0.005m2). Benthic invertebrate samples are sieved over a 0.5 mm mesh. A minimum of 10 random samples are carried out within the lagoon each year. There is high confidence in this datasets. Benthic invertebrate samples are processed by laboratories that are members of the National Marine Biological Analytical Quality Control (NMBAQC) scheme and random samples from each survey are also selected for audit by Unicomarine.

Keywords

GEMET - INSPIRE themes, version 1.0

Species distribution

Type: Theme

Citation

Date (Publication): 2008-06-01

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

Keywords

NRW Thesaurus

sediment sample
benthic species
temperature loggers
Infauna
lagoons
Temperature
benthic communities
sediment infauna
salinity
marine sediments (coastal sediments) (intertidal sediments) (subtidal sediments)

Type: Theme

Citation

Date (Publication): 2024-06-19

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

Keywords

SeaDataNet Parameter Discovery Vocabulary

Salinity of the water column
Temperature of the water column
Zoobenthos generic abundance

Type: Theme

Citation

Date (Publication): 2024-06-19

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

Code: British National Grid (EPSG::27700)

Content Information

NRW Profile

Custom Elements

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 2008. 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

File Identifier: 4f4c4942-4343-5764-6473-313130343637 XML

Metadata Language: English

Parent Identifier: Macrofaunal Community Monitoring on Saline Lagoons across Wales
NRW_DS116511

Resource type: Dataset

Metadata Date: 2024-12-13T11:50:18.413Z

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.

Morfa Gwyllt Lagoon Soft Sediment Infauna Survey (2006 - 2012)

Identification

Temporal Extent

Extent

Extent

Vertical Extent

Vertical Extent

Distribution

Quality

Data quality

Keywords

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