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.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS109980
- Teitl Amgen
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- 1998 CCW/NHM Wales saline lagoons and pools survey JNCCMNCR40000799
- Lagwnau a phyllau hallt arfordirol yng Nghymru
- Laith Metadata
- English
- Datganiad
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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.
- Gwybodaeth ychwanegol
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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.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2000-04-30
Ystod amser
- Dyddiad cychwyn
- 1998-12-01
- Dyddiad gorffen
- 1998-12-31
- Categori pwnc
-
- Environment
- Biota
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Maint Fertigol
- Maint allweddair MEDIN
- benthic boundary layer
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Database
(
)
- Math
-
[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
(
)
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Datganiad
-
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.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
- 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
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2023-12-31
Allweddair
-
SeaDataNet Parameter Discovery Vocabulary
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- Shellfish morphology, age and physiology
- Concentration of organic matter in sediments
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2024-03-28
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
- Teitlau cysylltiedig CNC
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Survey of potential coastal saline lagoons and pools in Wales, December 1998
- Teitlau cysylltiedig CNC
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Coastal saline lagoons and pools in Wales : review and proposals
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
-
There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
-
© 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
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313039393830 XML
- Laith Metadata
- English
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2026-07-01T14:14:03.201Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
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1.0