NRW_DS111142 eng NRW_DS114501 dataset Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en pointOfContact 2026-03-03T12:51:09 MEDIN 3.1.2 wel eng utf8 Latitude and Longitude (EPSG::4326) Sublittoral Monitoring Trials of North Pen Llyn 1998 Sublittoral Monitoring Trials of North Pen Llyn 1998 Treialon monitro isarforol o ogledd Pen Llŷn 1998 1998 CCW Llyn Peninsula sublittoral monitoring trials JNCCMNCR40000772 2001-04-30 publication 4f4c4942-4343-5764-6473-313131313432 The data was captured in order to assess the suitability of the biotope classification monitoring method trialled. A measure biotope richness as an attribute of north Pen Llyn reefs, was measured over three surveys transects between July and August 1998. Surveyors were experienced in Phase 2 survey methodology and each record was carefully re-examined by an experienced operator to ensure that data were comparable to those assigned to biotopes in the national classification, therefore were correctly assigned. The data was captured in order to assess the suitability of the biotope classification monitoring method trialled. A measure biotope richness as an attribute of north Pen Llyn reefs, was measured over three surveys transects between July and August 1998. Surveyors were experienced in Phase 2 survey methodology and each record was carefully re-examined by an experienced operator to ensure that data were comparable to those assigned to biotopes in the national classification, therefore were correctly assigned. Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en owner Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en custodian CCW Marine Monitoring Team Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW enquiries@naturalresourceswales.gov.uk http://naturalresourceswales.gov.uk/splash?orig=/ originator Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en distributor notPlanned Species distribution theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme methodology Pen Llyn a'r Sarnau SAC biotopes marine surveys (intertidal & subtidal surveys) (littoral survey) (sublittoral surveys) (bathymetric survey) (see also marine monitoring and MNCR) biogenic reef monitoring (see specific types of monitoring eg. woodland monitoring) marine biology (subtidal biology) (littoral biology) (sublittoral biology)(intertidal biology)(see also seashore) trials survey methods (survey techniques) (survey) (surveying) theme NRW Thesaurus 2025-01-08 publication geonetwork.thesaurus.local.theme.converted_nrw-keywords Zoobenthos taxonomic abundance Zoobenthos generic abundance Zoobenthos taxonomy-related counts theme SeaDataNet Parameter Discovery Vocabulary 2024-06-19 publication geonetwork.thesaurus.external.theme.rdf+xml otherRestrictions There are no access restrictions on this data. NRW may release, publish or disseminate it freely. no limitations otherRestrictions © 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. vector eng utf8 biota SeaVoX Vertical Co-ordinate Coverages 2021-01-06 revision benthic boundary layer NRW Geographic Identifiers Collection 2024-01-01 publication Wales (WLS) -4.93787601 -4.17289183 52.79171811 53.10657623 1998-07-31 1998-08-07 0 -45 Documents [A] The data collected are presented in the report and species, habitat and biotope data collected are also stored in Marine Recorder. [B] MNCR forms are also held in hardcopy. dataset 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 2010-12-08 publication This dataset has not been assessed for conformance to the referenced INSPIRE regulation. false Fixed line transects were used in the following ways. A shot line was deployed from which divers reeled-out a 50 m tape from a pole. The pole was designed to measure a fixed transect width and in combination with the fixed 50 m travelled, limit the area surveyed. It was decided that the direction of deployments for the diver based transects would be random and that species and abundances were to be recorded in-situ using standard protocol. Divers were instructed to record the most conspicuous and characterising features of the biotope as opposed to recording all macroscopic organisms. Three broad trial zones were identified and in each zone between 20 and 30 random sampling points were generated using a random number generating program. There is a high confidence in this dataset. Surveyors were experienced in Phase 2 survey methodology and each record was carefully re-examined by an experienced operator to ensure that data were comparable to those assigned to biotopes in the national classification, therefore were correctly assigned. This trial was a precursor to the Across Wales Diving Monitoring Project (see metadata entry 109743). Fixed line transects were used in the following ways. A shot line was deployed from which divers reeled-out a 50 m tape from a pole. The pole was designed to measure a fixed transect width and in combination with the fixed 50 m travelled, limit the area surveyed. It was decided that the direction of deployments for the diver based transects would be random and that species and abundances were to be recorded in-situ using standard protocol. Divers were instructed to record the most conspicuous and characterising features of the biotope as opposed to recording all macroscopic organisms. Three broad trial zones were identified and in each zone between 20 and 30 random sampling points were generated using a random number generating program. There is a high confidence in this dataset. Surveyors were experienced in Phase 2 survey methodology and each record was carefully re-examined by an experienced operator to ensure that data were comparable to those assigned to biotopes in the national classification, therefore were correctly assigned. This trial was a precursor to the Across Wales Diving Monitoring Project (see metadata entry 109743).