Cemlyn Lagoon Soft Sediment Infauna Survey (2006 - 2012)
The aim of the EC Habitats Directive 92/43/EEC is to promote the maintenance of biodiversity by requiring Member States to take measures to maintain or restore natural habitats and wild species listed on the Annexes to the Directive at a favourable conservation status, introducing robust protection for those habitats and species of European importance. Special Areas of Conservation (SACs) are strictly protected sites designated under the Habitats Directive. In the UK coastal 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. These are graded from A to D. - A Outstanding examples of the feature in a European context. - B Excellent examples of the feature, significantly above the threshold for Sites of Special Scientific Interest (SSSI) notification but of somewhat lower value than grade A sites. - C Examples of the feature which are of at least national importance (i.e. usually above the threshold for SSSI notification on terrestrial sites) but not significantly above this. These features are not the primary reason for SACs being selected. - D Features of below SSSI quality occurring on SACs These are non-qualifying features (“non-significant presence”), indicated by a letter D, but this is not a formal global grade. Cemlyn lagoon on the north coast of Anglesey, north Wales, is considered to be the best example of a saline coastal lagoon in Wales (Graded A) and forms part of the Cemlyn Bay SAC. The lagoon is separated from the sea by a shingle bank with a narrow channel at the western end, across which a sluice system was built in the 1930s. Seawater exchange occurs mainly through the sluice and by percolation through the shingle bank, although in extreme storms coinciding with spring tides waves break over the top of the shingle bank. Cemlyn lagoon supports a relatively diverse set of species, several of which are specific to lagoons, including the bryozoan Conopeum seurati, the lagoon cockle Cerastoderma glaucum and the lagoonal mud-snail Ventrosia ventrosa. Cemlyn lagoon is also the only site in Wales where the lagoonal isopod Idotea chelipes has been recorded. A number of uncommon plant species are found within the lagoon, including the brackish water-crowfoot Ranunculus baudotii and beaked tasselweed Ruppia maritima. The purpose of this data capture is to aid in the monitoring and condition assessment of this Annex I feature. This dataset is a collation of data from subtidal benthic soft sediment sampling carried out within Cemlyn lagoon.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS110464
- Teitl Amgen
-
- 2006-11 CCW Cemlyn Lagoon survey MRCCW30000000042
- 2012 DRAFT CCW Cemlyn Lagoon Survey MRCCW30000000076
- 2006 - 09 CCW Cemlyn Lagoon survey
- Arolwg o isfilod gwaddodion meddal Lagwn Cemlyn
- Laith Metadata
- English
- Datganiad
-
Data capture consisted of benthic invertebrates abundance records taken from samples collected using a mini-Eckman grab (0.025m2) and granulometry readings. All samples Benthic invertebrate samples are sieved over a 0.5 mm mesh. Supporting determinants consist of National Grid References (NGR), recorded using hand-help GPS; salinity and temperature readings, which are continuously recorded at site 2 using a data logger. Infaunal sampling is carried out annually in December. Salinity and temperature are recorded continuously. 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.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2012-12-31
Ystod amser
- Dyddiad cychwyn
- 2006-03-01
- Dyddiad gorffen
- 2012-12-31
- Categori pwnc
-
- Oceans
- Biota
Rhychwant
Rhychwant
- Hyd
- SIR YNYS MON - ISLE OF ANGLESEY
))
Maint Fertigol
- Maint allweddair MEDIN
-
benthic boundary layer; soil and sediment
Maint Fertigol
- Gwerth lleiaf
- 0
- Gwerth uchaf
- -1.63
- System Gyfeirio Cydlynu Fertigol
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Database
()
- Math
-
[A] Sample stations (metadata) held as MapInfo GIS layers. [B] Species data and particle size analysis data are held as excel spreadsheets [C] Species data held in Marine Recorder (MRCCW30000000042). [D] Temperature and salinity reading as raw files and excel spreadsheets.
-
Database
()
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Datganiad
-
Data capture consisted of benthic invertebrates abundance records taken from samples collected using a mini-Eckman grab (0.025m2) and granulometry readings. All samples Benthic invertebrate samples are sieved over a 0.5 mm mesh. Supporting determinants consist of National Grid References (NGR), recorded using hand-help GPS; salinity and temperature readings, which are continuously recorded at site 2 using a data logger. Infaunal sampling is carried out annually in December. Salinity and temperature are recorded continuously. 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.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
- NRW Thesaurus
-
- sediment infauna
- sediment sample
- sediments
- benthic communities
- benthic species
- lagoons
- salinity
- Temperature
- marine monitoring (see also marine surveys)
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2023-12-31
Allweddair
- SeaDataNet Parameter Discovery Vocabulary
-
- Salinity of the water column
- Temperature of the water column
- Zoobenthos generic abundance
- Math
- Theme
Dyfyniad
- Dyddiad (Adolygu)
- 2021-01-06
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
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 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
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313130343634 XML
- Laith Metadata
- English
- Dynodydd Rhiant
-
Macrofaunal Community Monitoring on Saline Lagoons across Wales
NRW_DS116511
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2024-05-31T09:37:33.629Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0