3a2981d47bebb3a95edad315001209fb eng series DONG Energy Power (UK) Ltd Data Manager receplon@dongenergy.co.uk pointOfContact 2014-09-15 MEDIN Discovery metadata standard 2.3.8 urn:ogc:def:crs:EPSG::4326 2006, Centre for Marine and Coastal Studies (CMACS), Burbo Bank Offshore Wind Farm, Pre-Construction Commercial Fish Survey (4m Beam Trawl) 2006-05-14 publication BBW01-95168554 http://www.burbobank.co.uk This project relates to the specific FEPA requirements for surveys of subtidal benthic (seabed) invertebrate ecology and fish. These are in part addressed by an annual 2m scientific beam trawl survey which complements other work, notably grab sampling and 4m (commercial) beam trawl surveys. The 2m beam trawl survey is undertaken by Centre for Marine and Coastal Studies Ltd (CMACS) on behalf of SeaScape Ltd. The programme commenced with baseline (pre-construction) surveys in autumn 2005 which built upon surveys undertaken in 2002 in support of the project environmental impact assessment. This project relates to the results of monitoring carried out in autumn 2006, during construction of the wind farm, and compares the results with baseline data. The survey outcomes showed some clear differences in benthic fauna sampled by beam trawls that were apparent between baseline survey in 2005 and the during construction survey in 2006. The most notable trend was a marked decrease in abundance of epibenthic invertebrates and infauna sampled by trawls across many sites. Centre for Marine and Coastal Studies Ltd +44 (0)151 327 7177 +44 (0)151 327 6344 Head Office, CMACS Ltd, 80 Eastham Village Road, Eastham Wirral CH62 0AW United Kingdom info@cmacsltd.co.uk http://www.cmacsltd.co.uk/ originator DONG Energy Power (UK) Ltd Data Manager receplon@dongenergy.co.uk custodian notPlanned Delimited Renewable Energy Lease area The Crown Estate Renewable Energy Development Areas 2012-05-15 revision 1 Pre-Construction monitoring The Crown Estate Renewable Energy Development Phases 2012-05-15 revision 1 Fish taxonomy-related counts SeaDataNet P021 parameter discovery vocabulary 2009-11-16 revision Fishing by-catch SeaDataNet Parameter Discovery Vocabulary 2017-09-06 revision 103 Fish and benthos trawl tow MEDIN Data Guidelines 2012-05-01 revision 3 Marine Environmental Data and Information Network Marine Environmental Data and Information Network otherRestrictions No restrictions Adhere to conditions of access. Acknowledge the source appropriately. Do not redistribute part or all of these data without contacting DONG Energy Power (UK) Limited. eng biota environment Charting Progress 2 Sea Areas 2009-06-18 creation Irish Sea International Hydrographic Bureau, Limits of Oceans and Seas 1954-01-01 creation Irish Sea and St. George's Channel ICES Statistical Areas 2014-05-16 creation VIIa -3.4565 -3.0005 53.3759 53.6242 2006-05-01 2006-05-03 http://www.marinedataexchange.co.uk/search?q=#fq=fq%3DProject%253Amde1r1bb8881 download https://www.marinedataexchange.co.uk/details/203/summary A link to the web service or dataset. https://www.marinedataexchange.co.uk A link to the general host site. series The survey was carried out over 3 days from 1st to 3rd May 2006 aboard the fishing vessel ‘Admiral Grenville’ operating out of the East Canada Dock in Liverpool. The survey was carried out using twin 4m commercial beam trawls with 80mm mesh cod-end and a chain matrix between the beam and footrope. Trawling was carried out over the ground at a speed of 3.5-4 knots, after consultation with the vessel’s captain, Richard Hamilton, who advised that this speed was most efficient for the capture of fish. Trawling was carried out for 30 minutes over a distance of 2km. Once the gear had been retrieved to deck, the contents of the cod-ends of each trawl were emptied into port and starboard bins, where any sediment could be washed off. One at a time, these bins were tilted so that the contents poured gradually onto a conveyor belt, which ran into the whale-back on the bow of the vessel where the contents of the trawl could be sorted on a second conveyor belt. Discards of the trawls dropped into a chute at the end of the second conveyor belt that emptied at sea-level. The port trawl was used in all of the trawls except trawl 4 as the port catch was lost in this case. Each trawl and any species of interest were photographed (see Appendix 4.2 and 4.3). As the catch passed along the conveyor in the whale-back, all fish were picked out of the trawl contents by the CMACS representatives on board. Benthic epifauna were not considered in this survey and were returned to sea via the chute previously described. The fish from each trawl were photographed in boxes and then counted, all commercial fish species with the addition of dab Limanda limanda were measured, elasmobranchs were sexed and measured.