bf6ca2441bc39cba92cdb0c8de0bedb5 English dataset NatureScot (HQ Inverness) data_supply@nature.scot pointOfContact 2025-06-09 MEDIN 3.1.2 EPSG Geodetic Parameter Registry 2021-01-06 revision WGS 84 2014 Scottish Natural Heritage (SNH) biological analyses of Scottish Environment Protection Agency (SEPA) Loch Sealg (Loch Shell) underwater video survey 2015-12-31 publication 2015-12-31 revision 2014-06-06 creation GB-SCT-SNH-ME-000273-MRSNH03200000003-LSHE Marine Recorder NS-000273 NatureScot project ID This SNH analyses of underwater video footage collected in Loch Sealg (Loch Shell) is intended to improve knowledge of the occurrence and distribution of the species and habitats of recognised conservation importance and help to improve future nature conservation action by undertaking a marine habitat classification using JNCC standards, and to search for Priority Marine Features (PMF). A drop-down video survey to collect this benthic habitat data was undertaken by SEPA on the 5th and 6th June 2014 on board the SEPA survey vessel Sir John Murray. The underwater video footage was collected using a high definition underwater camera system, custom built for the purposes of environmental monitoring by marine Scotland Science and SNH specifically for use on SEPA's survey vessel, at 29 stations. The seabed video and still photographic imagery material was collected as part of SEPA's work to gauge the health and ecological condition of coastal water bodies but passed to SNH to be analysed by a contractor to describe the nature of the seabed in terms of the physical structure and the species assemblages. Video runs and run segments were assessed for the presence of protected features and other priority marine features (PMFs), as well as for the presence of species and habitats of recognised conservation importance. Scottish Environment Protection Agency Data manager sea.gateway@sepa.org.uk owner Scottish Natural Heritage (SNH) Scottish Natural Heritage (SNH), Headquaters Data Manager 01463 725000 data_supply@nature.scot owner NatureScot (HQ Inverness) NatureScot Data Manager data_supply@nature.scot custodian Marine Ecological Solutions Data manager info@marine-ecosol.com originator Scottish Environment Protection Agency Data manager sea.gateway@sepa.org.uk originator Scottish Natural Heritage (SNH) Scottish Natural Heritage (SNH), Headquaters Data Manager 01463 725000 data_supply@nature.scot originator Esther Hughes Data Archive for Seabed Species and Habitats (DASSH) Data Manager 01752 633102 dassh.enquiries@mba.ac.uk distributor notPlanned Marine Environmental Data and Information Network MEDIN metadata record availability 2025-06-09 revision NDGO0005 NDGO0005 2025-06-09 revision Habitats and biotopes GEMET - INSPIRE themes, version 1.0 2021-09-28 revision Habitat characterisation Habitat extent Seabed photography SeaDataNet Parameter Discovery Vocabulary 2021-09-28 revision otherRestrictions Not to be used for navigation. This survey recorded no species or biotope occurences that SNH consider as sensititive; all records may therefore be released in response to requests covered by Environmental Information Regulations or Freedom of Information Regulations; additionally its re-use and dissemination is permissable under Open Government Licence terms. Any re-use of this data will acknowledge the copyright owner. otherRestrictions No restrictions on public access 400 English 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 biota environment geoscientificInformation oceans -6.5917 -6.3894 57.9390 58.0503 SeaVox salt and freshwater body gazetteer 2021-01-06 creation Inner Seas off the West Coast of Scotland Charting Progress 2 Sea Areas 2021-01-06 creation Minches and Western Scotland ICES Rectangles 2021-01-06 creation 44E3 2014-06-05 2014-06-06 SeaVoX Vertical Co-ordinate Coverages 2021-01-06 revision circalittoral SeaVoX Vertical Co-ordinate Coverages 2021-01-06 revision infralittoral Morris-Webb, E.S. & Stamp, T.S. 2015. Biological analyses of underwater video footage from Arran, Loch Linnhe, Loch Shell and Loch Seaforth. Scottish Natural Heritage Commissioned Report No. 818. Database Marine Recorder Documents Published report Geographic Information System shapefile Image dataset MEDIN data guideline for video surveys of species and benthos 2018-01-23 publication See the referenced specification true 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 subtidal seabed data from Loch Sealg was collected on an incidental research visit by SEPA on board their research vessel Sir John Murray on the 5th and 6th June 2014. Video images were obtained from 29 drop-down video drifts. Standard resolution video was obtained from drop-down video tows with time overlay, and where possible high definition GoPro imagery was taken alongside (without time overlay). Due to better quality results, the GoPro video was analysed preferentially to the original DDV footage. No still images were taken alongside the video tows, however images were taken as screen grabs from video tows post survey. This data were derived from SEPA video footage provided to SNH for biological analyses. Analyses of the video footage was undertaken by Marine Ecological Solutions, contracted by SNH, to describe the physical structure and species assemblages present. Species present were identified and quantified using the semi-quantitative MNCR SACFOR scale, as far as possible. Video was first split into individual habitats or biotopes where new habitats were either bigger than 25m2 (a minimum biotope size) or greater than 1 minute in length. A first view of the video included assigning habitat name, substrate composition, characterizing biota, sample descriptions and evidence of any human disturbance. On the second view, all species identifiable to a World Register of Marine Species (WoRMS) accepted taxa were recorded and where possible a SACFOR abundance rating was assigned. Biotopes were assigned based on the biological and physical attributes, using the JNCC Marine Habitat Classification guidance. Where video runs traversed a sequence of biotopes, the runs are split into corresponding segments with the transition points recorded using the clock time, position and depth.