2fb3d9c9-ebe5-4cdf-a67d-aa43a97ac677 English series series 2026-03-09T16:34:33 MEDIN 3.1.2 biota oceans Fish taxonomy-related counts SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Acoustic backscatter in the water column SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Fish abundance in water bodies SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Oceanographic geographical features GEMET - INSPIRE themes, version 1.0 2009-07-31 revision Species distribution GEMET - INSPIRE themes, version 1.0 2009-07-31 revision SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision unknown 2014-08-04T00:00:00 2014-08-07T00:00:00 1.85 2 51.72 51.98 TCE-3523 Marine Data Exchange 2014, Brown and May Marine, Greater Gabbard, Elasmobranch Long-Line Survey Elasmobranch Long-Line Survey 2014-08-04T00:00:00 creation 2024-04-02T08:44:28 publication 2014-11-17T00:00:00 revision English The Marine Licence L/2013/00076 conditions associated with the Greater Gabbard Offshore Wind Farm (GGOWF) stipulate that elasmobranch monitoring must be undertaken post-construction. In order to fulfil these conditions a second post-construction longline survey targeting elasmobranchs was undertaken between the 4th and 7th August 2014 within and adjacent to the GGOWF and the cable route. The aim of the survey was to determine the abundance and distribution of elasmobranch species and the survey methodology was developed in consultation with the Marine Management Organisation (MMO). A total of 14 longlines were shot and hauled over the survey duration in which four species of elasmobranch were recorded; lesser spotted dogfish (Scyliorhinus canicula), thornback ray (Raja clavata), smoothhound sp. (Mustelus sp.) and tope (Galeorhinus galeus). S. canicula was the most abundant species recorded during the survey with the highest numbers caught within the wind farm. R. clavata was most abundant at stations along the export cable. S. canicula and G. galeus were recorded in the four sampling areas and all four elasmobranch species were caught within the wind farm. The smallest number of elasmobranch species were found at the export cable control stations. The majority of S. canicula and G.galeus caught during the survey were females, whereas for R. clavata and Mustelus sp. a higher proportion of males were recorded. Aggregations of elasmobranchs by sex and maturity could be in response to seasonal factors, changes in reproductive behaviour or increased prey availability. A recent review by the MMO (MMO, 2014) in relation to elasmobranchs and electromagnetic fields (EMFs) generated by offshore wind cabling concluded that there is “no evidence to suggest that EMFs pose a significant threat at the site or population level”. There will be no limitations when published on the Marine Data Exchange Once published, there will be no limitations on public access. Data must be used in accordance with the Marine Data Exchanges Terms of Use which can be found on the website. otherRestrictions Data Must be used in accordance to the Marine Data Exchange's Terms of Use: https://www.marinedataexchange.co.uk/content/info/terms-of-use Once published, there will be no constraints on access and use. Data must be used in accordance with the Marine Data Exchanges Terms of Use which can be found on the website. otherRestrictions The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk custodian Brown and May Marine Ltd. GIS Officer gis@brownmay.com originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor SSE Renewables info@sserenewables.com owner notPlanned Database Documents https://www.marinedataexchange.co.uk/details/TCE-3523/summary A link to the web service or dataset. https://www.marinedataexchange.co.uk A link to the general host site. 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 publication Conformity with the Commission Regulation (EU) No 1089/2010 was either not relevant to this dataset or not a requirement of the Marine Data Exchange for the creation and submission of this dataset ; therefore, conformity has not been assessed and cannot be declared False series Sampling gear: Standard longline gear was used for sampling. Longlines of 300m were set at each station, with 100 hooks per line, spaced approximately 3m apart. The specifications for which are given below in Table 3.2. The longline gear (Figure 3.2) was manually deployed on both flood and ebb tides with a gear marker set at the beginning of the fleet (Figure 3.3). Gear markers comprised of single-flagged dhan buoys (some with radar reflectors) and a coloured buff. Catch analysis: Fish species were analysed as follows: Number of individuals by species; Length of individuals by species Finfish: individual lengths (nearest cm below) - Herring (nearest 0.5 cm below) Sharks: individual lengths (nearest cm below), sex and maturity stage in males Rays: individual lengths and wing-width (nearest cm below), sex and maturity stage in males SSE Renewables SSE Renewables dassh.enquiries@mba.ac.uk pointOfContact EPSG Geodetic Parameter Registry 2022-11-29 revision WGS 84