725ff3c2-9960-4015-a4d3-91a6d64f77ab English dataset eacda9011880d084168cda10b679bdf5 Data Manager (DASSH) Data Archive for Marine Species and Habitats dassh.enquiries@mba.ac.uk pointOfContact 2025-12-09 MEDIN 3.1.2 EPSG Geodetic Parameter Registry 2021-01-06 revision WGS 84 2024 September - ongoing University of Plymouth (UoP) Isles of Scilly Trawling Impact BACI Survey 2025-09-09 publication 2024-09-24 revision 2024-09-24 creation DASSHDT00000545 https://www.dassh.ac.uk/ A new byelaw is expected to be passed which will close 43% of the Isles of Scilly district to bottom-towed fishing gear. The byelaw will allow permits to be distributed to up to six fishing vessels to use otter trawl and scallop dredge. The grounds around Scilly have not been trawled for over a decade, however there is now renewed interest to fish the water around Scilly. This creates a unique opportunity to conduct a Before-After-Control-Impact study on the impacts of bottom-towed fishing gear. This data set comprises of marine epibenthos quantified in 2024 September at sites to the east of the Isles of Scilly. At each site 3x45 minute BRUV video and 2X100m TUV transects were completed. This survey was carried out to establish a baseline against which changes to habitat complexity and biodiversity of associated communities can be quantified following resumption of trawling. This survey was also replicated at sites which will fall under the byelaw extension, which will act as reference sites. Rebecca Turley University of Plymouth +44 (0)1752 600600 rebecca.turley@plymouth.ac.uk owner Data Archive for Marine Species and Habitats (DASSH) Data Archive for Marine Species and Habitats dassh.enquiries@mba.ac.uk custodian Rebecca Turley University of Plymouth +44 (0)1752 600600 rebecca.turley@plymouth.ac.uk originator Data Archive for Marine Species and Habitats (DASSH) Data Archive for Marine Species and Habitats dassh.enquiries@mba.ac.uk distributor notPlanned Marine Environmental Data and Information Network MEDIN metadata record availability 2025-12-02 revision Species distribution GEMET - INSPIRE themes, version 1.0 2021-09-28 revision Habitat extent SeaDataNet Parameter Discovery Vocabulary 2021-09-28 revision otherRestrictions Data archived but not to be disseminated. otherRestrictions Data archived but not to be disseminated. English 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 biota environment -6.2368010217324 -6.106338375248 49.862277854617 49.981640244767 SeaVox salt and freshwater body gazetteer 2021-01-06 creation Celtic Sea Charting Progress 2 Sea Areas 2021-01-06 creation Western Channel and Celtic Sea ICES Rectangles 2021-01-06 creation 28E3 ICES Statistical Areas 2021-01-06 creation VIIe 2024-09-16 2024-09-24 SeaVoX Vertical Co-ordinate Coverages 2021-01-06 revision water column Delimited https://doi.org/10.17031/67ebb90b495c5 DOI link information 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 mandatory true MEDIN data guideline for fish and benthos data by trawl or dredge 2018-10-08 publication MEDIN guidelines true A sub-set of the analysed still frames from the video data was checked (reanalysed and compared to original analysis) by a senior video analyst. This data has been reviewed against the DASSH Quality Assessment Criteria (http://doi.org/10.17031/64ccec5c7ba72) and been categorised as high quality.