4f4c4942-4343-5764-6473-313135383338
eng
dataset
Natural Resources Wales (NRW)
0300 065 3000
Maes-y-Ffynnon
LL57 2DW
enquiries@naturalresourceswales.gov.uk
pointOfContact
2021-09-13
MEDIN Discovery Metadata Standard
Version 2.3.8
urn:ogc:def:crs:EPSG::WGS84
OGP
Towed Video Surveys off the Coastline of the Llyn Peninsula North Wales (2013)
Arolygon fideo llusgedig oddi ar lannau Llyn yng ngogledd Cymru, 2013.
2013 DRAFT Fisher Survey Towed Video Survey Llyn Peninsula, June. MRCCW31700000014
2014-10-31
publication
2014-09-30
revision
115838
https://naturalresources.wales
Surveys of the seabed were carried out using towed dropdown video surveys were taken aboard Lara B and William Stanley, both fishing vessels operating around Llyn Peninsula, Gwynedd, North Wales. A total of 38 video tows were collected from infralittoral and circalittoral habitats at the following five locations offshore from the Llyn Peninsular North Wales; Llyn-Hells Mouth, Ynys Gwlan, Porth Meudwy, North Llyn Modiolus and North Llyn sea Grass. Where available HD GoPro video footage was used in the analyses, however if this was not possible a lower quality standard definition footage was used. The locations of the video tows were made into GIS files as a spatial representation of the location of the tow surveys. Video surveys were conduct to conduct ground-truthing surveys through
the seabed around the Llyn Peninsula, Gwynedd, North Wales.
Natural Resources Wales (NRW)
0300 065 3000
Maes-y-Ffynnon
LL57 2DW
enquiries@naturalresourceswales.gov.uk
custodian
Marine Ecological Solutions Ltd
01248 712277
Marine Ecological Solutions Ltd
LL59 5EF
info@marine-ecosol.com
originator
unknown
Documents
Habitats and biotopes
GEMET - INSPIRE themes, version 1.0
2022-02-05
publication
Seabed photography
Habitat characterisation
SeaDataNet Parameter Discovery Vocabulary
2011-03-25
publication
Marine Environmental Data and Information Network
© CNC/NRW Recipients may only re-use sensitive data in strict confidence under the terms of an appropriate NRW Licence. No publication or dissemination is permitted, except if sensitive records are removed in advance, or shown only at a coarser scale.
otherRestrictions
Part of this dataset is sensitive and restricted. Sensitive data must be kept confidential; general release is not permitted due to risk of harm to the environment or third parties. Sensitive data may only be released under an appropriate NRW Licence. Requests should be referred to NRW's Access to Information Team. Data may be released freely if the sensitive records are removed in advance, or shown only at a coarser scale.
eng
biota
SeaVoX Vertical Co-ordinate Coverages
2010-05-18
publication
benthic boundary layer
-4.92830672
-3.9391058
52.59279605
53.16036337
2013-06-17
2013-06-19
-29
-2
Natural Resources Wales (NRW)
0300 065 3000
Maes-y-Ffynnon
LL57 2DW
enquiries@naturalresourceswales.gov.uk
distributor
dataset
Drop-down video tows were carried out onboard small fishing boats using a High Definition (HD) GoPro video camera (approximate field of view is 100cm in the middle of the picture) and a Standard Definition ROVTECH Systems Micro Hi-Res Digital Colour Camera (1/3 inch Sony HAD CCD - 480 TV lines resolution) with 4.3mm wide angle lens (approx 80 degrees in water) and Mini Seabeam Lights. A manual log was kept of the location of the start and end of the transects, which were later digitized via GIS files. The video surveys were analysed for habitats, species and biotopes by Marine EcoSol using standard MNCR derived techniques and JNCC Marine Habitat Classifications. Drop-down video tows were carried out by Salacia Marine whilst onboard small fishing vessels.