Sublittoral Monitoring Trials of Sarn Badrig Reef (1997 - 1998)

The data was captured in order to assess the suitability of the biotope classification monitoring method trialled. Sublittoral monitoring trials were done to investigate the extent of biotopes on Sarn Badrig reef- the most extensive of three Sarnau reefs within Pen Llyn a'r Sarnau SAC. In total three surveys were been carried out to investigate the biotopes present. 1) A 1998 survey to evaluate the deployment of divers for measuring the extent of the Sarnau reef biotopes. 2) A 1999 survey of Sarn Badrig reef using quadrat methodology. 3) A 1999 transect survey of the reef.

Dynodydd: NRW_DS111173

Teitl Amgen

1998 CCW Sarnau sublittoral monitoring trials JNCCMNCR40000773
1999 CCW Sarn Badrig Monitoring Trials MRCCW30000000006
1999 CCW Sarn Badrig Reef sublittoral monitoring trial JNCCMNCR40000776
Profion monitro isarforol ar riff Sarn Badrig

Laith Metadata: English

Datganiad: Survey 1: A 1998 survey to evaluate the deployment of divers for measuring the extent of the Sarnau reef biotopes. A shot line was deployed from which divers reeled-out a 50m tape from a pole. The pole was designed to measure a fixed transect width. Two transect locations were chosen to include the full range of broad habitats present. Four broad trial zones were identified and in each, three sampling points were randomly selected. Species and abundances were recorded in-situ using standard protocol. Survey 2: A 1999 survey of Sarn Badrig reef using quadrat methodology. The initial survey deployed four pairs of divers to map out habitat features of the area surrounding a fixed station. Four quadrats were placed by an expert algologist to represent the range of variability in the community composition within the biotope present. At each, species were recorded by seven diving surveyors, who recorded individual counts, % areas of cover and 'cell frequency'. The species data recorded in Marine Recorder only includes the individual counts of species. Survey 3: A 1999 transect survey of the reef. Stratified random selection of sites were investigated using a `roll-out` transect technique. Three main `sites` were surveyed comprising strings of sampling stations in lines perpendicular to the reef crest: - one on the seaward limit of the reef, one mid-reef and another across the eastern third of the reef. Records were made using Marine Nature Conservation Review (MNCR) abundance scales.

Dyddiad cyfeirnod y set ddata (Cyhoeddiad): 2001-04-01

Ystod amser

Dyddiad cychwyn: 2018-02-12

Dyddiad gorffen: 1999-10-07

Categori pwnc

Biota

Perchennog

Natural Resources Wales (NRW)

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

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

Cychwynnwr

Countryside Council for Wales (CCW)

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

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

Rhychwant

Hyd: Irish Sea

Hyd: Cardigan Bay

Hyd: Tremadog Bay

Hyd: Wales (WLS)

Map representing the geographic extent of the dataset

Maint Fertigol

Maint allweddair MEDIN: benthic boundary layer

Maint Fertigol

Gwerth lleiaf: -7

Gwerth uchaf: -12.5

System Gyfeirio Cydlynu Fertigol: urn:ogc:def:datum:EPSG::5100 Sea Level depth is unadjusted and does not take into account tidal height

Fformat - Math a Disgrifiad

Documents Documents ()

Math

[A] The data on species, sediment analysis, biotope etc are held in Marine Recorder. [B] Hardcopy MNCR forms are also available. [C] The results of the 1998 trial are also discussed in a hardcopy report format.

Ansawdd Data

Cwmpas Ansawdd: Dataset

Cydymffurfiad: 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
Eglurhad
Gradd: false

Datganiad: Survey 1: A 1998 survey to evaluate the deployment of divers for measuring the extent of the Sarnau reef biotopes. A shot line was deployed from which divers reeled-out a 50m tape from a pole. The pole was designed to measure a fixed transect width. Two transect locations were chosen to include the full range of broad habitats present. Four broad trial zones were identified and in each, three sampling points were randomly selected. Species and abundances were recorded in-situ using standard protocol. Survey 2: A 1999 survey of Sarn Badrig reef using quadrat methodology. The initial survey deployed four pairs of divers to map out habitat features of the area surrounding a fixed station. Four quadrats were placed by an expert algologist to represent the range of variability in the community composition within the biotope present. At each, species were recorded by seven diving surveyors, who recorded individual counts, % areas of cover and 'cell frequency'. The species data recorded in Marine Recorder only includes the individual counts of species. Survey 3: A 1999 transect survey of the reef. Stratified random selection of sites were investigated using a `roll-out` transect technique. Three main `sites` were surveyed comprising strings of sampling stations in lines perpendicular to the reef crest: - one on the seaward limit of the reef, one mid-reef and another across the eastern third of the reef. Records were made using Marine Nature Conservation Review (MNCR) abundance scales.

Allweddair

GEMET - INSPIRE themes, version 1.0

Species distribution

Math: Theme

Dyfyniad

Dyddiad (Cyhoeddiad): 2008-06-01

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

Allweddair

NRW Thesaurus

marine biodiversity
marine biology (subtidal biology) (littoral biology) (sublittoral biology)(intertidal biology)(see also seashore)
marine surveys (intertidal & subtidal surveys) (littoral survey) (sublittoral surveys) (bathymetric survey) (see also marine monitoring and MNCR)
monitoring (see specific types of monitoring eg. woodland monitoring)
methodology
survey methods (survey techniques) (survey) (surveying)
trials
biotopes
Sarn Badrig Reef

Math: Theme

Dyfyniad

Dyddiad (Cyhoeddiad): 2023-12-31

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

Allweddair

SeaDataNet Parameter Discovery Vocabulary

Habitat characterisation
Habitat extent

Math: Theme

Dyfyniad

Dyddiad (Adolygu): 2021-01-06

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

Cod: Latitude and Longitude (EPSG::4326)

Gwybodaeth Cynnwys

Proffil CNC

Elfennau CNC

Teitlau cysylltiedig CNC: The establishment of a programme of surveillance and monitoring for judging the condition of the features of Pen Llyn a'r Sarnau cSAC : 1. Progress to March 2001

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 on this data. NRW may release, publish or disseminate it freely.

Defnyddiwch gyfyngiadau

Cyfyngiadau Defnyddio: Other restrictions

Cyfyngiadau eraill: © CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and copyright of the owners. It is the recipient's responsibility to ensure the data is fit for the intended purpose.

Metadata

Dynodydd Ffeil: 4f4c4942-4343-5764-6473-313131313733 XML

Laith Metadata: English

Dynodydd Rhiant: Natural Resources Wales (NRW) Marine Benthic Species and Habitat Collation Held in Marine Recorder
NRW_DS114501

Math o adnodd: Dataset

Dyddiad Metadata: 2024-05-31T09:41:16.216Z

Enw Safonol Metadata: NRW

Fersiwn Metadata: 1.0

Pwynt Cyswllt

Natural Resources Wales (NRW)

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

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

Corff Cyhoeddi

Mynediad i'r Porth

Mynediad llawn i'r porth a'r metadata.

Sublittoral Monitoring Trials of Sarn Badrig Reef (1997 - 1998)

Dull adnabod

Ystod amser

Rhychwant

Rhychwant

Maint Fertigol

Maint Fertigol

Dosbarthiad

Ansawdd

Ansawdd Data

Allweddeiriau

Allweddair

Dyfyniad

Allweddair

Dyfyniad

Allweddair

Dyfyniad

System Cyfeirio Gofodol

Cynnwys

Gwybodaeth Cynnwys

Proffil CNC

Elfennau CNC

Cyfyngiadau

Cyfyngiadau

Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus

Cyfarwyddeb Cyfyngiadau Mynediad

Testun cyfyngiadau mynediad

Defnyddiwch gyfyngiadau

Metadata

Metadata

Corff Cyhoeddi