Coastal Saline Lagoons and Pools in Wales
The Natural History Museum was asked by the Countryside Council for Wales (CCW) to undertake a survey of all potential lagoonal or coastal brackish pond sites in Wales. This dataset presents the results of that survey, conducted during December 1998 as well as the results of the review and proposals for the monitoring and conservation of the coastal saline lagoons in Wales. Lagoons are an unusual and rare habitat, both in the UK (total resource ca 5,000 ha) and elsewhere. The characteristic lagoon community includes species almost or entirely restricted to lagoonal habitats in the United Kingdom, where they represent some of our rarest plants and animals; nine lagoonal species are currently protected under Schedules 5 and 8 of the Wildlife and Countryside Act (1981). Survey of lagoonal habitats in Wales to identify lagoons and pools and carry out an assessment of condition and monitoring.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS109980
- Alternative Title
-
- 1998 CCW/NHM Wales saline lagoons and pools survey JNCCMNCR40000799
- Lagwnau a phyllau hallt arfordirol yng Nghymru
- Metadata Language
- English
- Lineage
-
While there had been a number of surveys of saline lagoons in England and Scotland (e.g. Bamber, 1997; Covey, 1999), there had been no investigation of the saline lagoon resource of Wales other than the NCC survey in the mid 1980s (e.g. Barnes, 1987). This dataset represents the results of the first complete survey of lagoonal habitats in Wales since then. A total of 28 potential sites or ponds were assessed, 25 ponds visited, 18 sampled, of which 12 were deemed to be saline lagoons or coastal brackish ponds. At each site the physiography of the lagoon was assessed as were all water inputs (streams, sluices, weirs, etc.) and outflows. The surrounding habitat or human exploitation of the land was noted, as were marginal plants. Salinity was measured using a Reichert salinity refractometer. Semi-quantitative samples were collected from the substratum, the submerged plants and the water column of the lagoons. Sampling was predominantly by 0.5 mm mesh hand net. Fragments of submerged plant material and other hard substrata were also examined for bryozoans and other epizooites. Quantitative samples of the sedimentary benthos were collected from sites conjectured to be saline lagoons and also from para-lagoonal habitats for analytical comparison. At each of the twelve quantitative sample sites, a sample of whole surface sediment was collected for granulometric analysis and for analysis of organic content . Area and depth were measured and sites were photographed. Where found lagoonal cockles were measured to aid interpretation of year classes.
- Additional Information
-
Senior Marine Monitoring Ecologist, NRW - Bamber, RN., Evans, NJ., Whittall, A. 2000. Survey of potential coastal saline lagoons and pools in Wales, December 1998. Countryside Council for Wales Science Report 377. Bangor. - Bamber, RN., Evans, NJ., Sanderson, WG., Whittall, A. Coastal saline lagoons and pools in Wales: Review and proposals. Countryside Council for Wales Science Report 464.
- Dataset Reference Date (Publication)
- 2000-04-30
Temporal Extent
- Begin date
- 1998-12-01
- End date
- 1998-12-31
- Topic category
-
- Environment
- Biota
Extent
Extent
- Geographic Extent
- Wales (WLS)
))
Vertical Extent
- Medin Extent Keyword
-
benthic boundary layer
Distribution
- Format Type and Description
-
-
Database
Database
()
- Specification
-
[A] Data in spreadsheet format (MS Excel) [B] Data in Marine Recorder (JNCCMNCR40000799) [C] Held in paper format as MNCR forms [D] Report (MS Word, 8 maps (tif format in Imaging for Windows) [E] 31 photos in .jpg (PhotoEditor) & .tif format (Imaging), 3 x .cdr files)
-
Database
Database
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
-
While there had been a number of surveys of saline lagoons in England and Scotland (e.g. Bamber, 1997; Covey, 1999), there had been no investigation of the saline lagoon resource of Wales other than the NCC survey in the mid 1980s (e.g. Barnes, 1987). This dataset represents the results of the first complete survey of lagoonal habitats in Wales since then. A total of 28 potential sites or ponds were assessed, 25 ponds visited, 18 sampled, of which 12 were deemed to be saline lagoons or coastal brackish ponds. At each site the physiography of the lagoon was assessed as were all water inputs (streams, sluices, weirs, etc.) and outflows. The surrounding habitat or human exploitation of the land was noted, as were marginal plants. Salinity was measured using a Reichert salinity refractometer. Semi-quantitative samples were collected from the substratum, the submerged plants and the water column of the lagoons. Sampling was predominantly by 0.5 mm mesh hand net. Fragments of submerged plant material and other hard substrata were also examined for bryozoans and other epizooites. Quantitative samples of the sedimentary benthos were collected from sites conjectured to be saline lagoons and also from para-lagoonal habitats for analytical comparison. At each of the twelve quantitative sample sites, a sample of whole surface sediment was collected for granulometric analysis and for analysis of organic content . Area and depth were measured and sites were photographed. Where found lagoonal cockles were measured to aid interpretation of year classes.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
-
- lagoons
- saline lagoons
- physiography
- salinity
- bryozoans
- benthos
- ganulometric analysis
- coastal saline lagoon
- coastal lagoon
- pools
- lagoonal
- marginal plants
- substratum
- epizooites
- Morfa Gwyllt spit lagoon
- Pickleridge lagoon
- Aberthaw
- paralagoonal habitat
- ganulometric analysis
- lagoonal cockles
- Aber (Abergwyngregyn)
- Cemlyn Lagoon
- Carew Castle mill pond
- Penclacwydd
- marine and freshwater inventory
- Sediment PSA
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Keywords
- SeaDataNet Parameter Discovery Vocabulary
-
- Shellfish morphology, age and physiology
- Concentration of organic matter in sediments
- Type
- Theme
Citation
- Date (Revision)
- 2021-01-06
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
-
Survey of potential coastal saline lagoons and pools in Wales, December 1998
- NRW Related Title
-
Coastal saline lagoons and pools in Wales : review and proposals
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 2000. 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
- 4f4c4942-4343-5764-6473-313039393830 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2024-05-31T09:37:29.684Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0