1dfdd65d-9089-4663-92cb-dbdd1309fb72 English dataset NatureScot (HQ Inverness) data_supply@nature.scot pointOfContact 2026-05-06 MEDIN 3.1.2 EPSG Geodetic Parameter Registry 2021-01-06 revision WGS 84 2010 SAMS/CB Marine survey of Didemnum vexillum and other invasive species in South West Scotland (commissioned report 413) 2026-05-06 publication 26b623e5-d4fb-4a7e-bc9d-a56f88c53b51 MRO Survey ID The aim of this survey was to determine the presence or absence of the invasive marine non-native D. vexillum on the south-west coast of Scotland. The first survey involved a series of rapid assessment surveys of those marinas and harbours thought to be most likely at risk from establishment (e.g. those in the Clyde). This was followed up by additional surveys of artificial and natural substrates in the vicinity of Largs Yacht Haven. The results of these surveys will inform SNH’s policy for dealing with this species, as well as the wider UK policy for response. Twelve locations, including ten marinas and two harbours on the west coast of Scotland (Figure 2.1; Table 2.1) were surveyed for D. vexillum between 1 and 5 February 2010 following a similar method described in Ashton et al. (2006) and the method adopted by the Marine Biological Association UK in on-going surveys for this species in England (J. Bishop, pers. comm.). NatureScot (HQ Inverness) NatureScot Data Manager data_supply@nature.scot owner NatureScot (HQ Inverness) NatureScot Data Manager data_supply@nature.scot custodian NatureScot (HQ Inverness) NatureScot Data Manager data_supply@nature.scot originator NatureScot (HQ Inverness) NatureScot Data Manager data_supply@nature.scot distributor unknown Marine Environmental Data and Information Network MEDIN metadata record availability 2026-05-06 revision NDGO0005 NDGO0005 2026-05-06 revision Habitats and biotopes Species distribution GEMET - INSPIRE themes, version 1.0 2021-09-28 revision Habitat characterisation Habitat extent Zoobenthos taxonomic abundance Zoobenthos taxonomy-related counts SeaDataNet Parameter Discovery Vocabulary 2021-09-28 revision otherRestrictions Not for navigational use; 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 of Freedom of Information Regulations: http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/; additionally its re-use and dissemination is permissable under Open Government Licence terms. Any re-use of this data will acknowledge the copyright owner SNH. otherRestrictions no restrictions to public access English 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 biota environment oceans -7.3893409 -4.6770021 50.2321966 56.4515076 SeaVox salt and freshwater body gazetteer 2021-01-06 creation Firth of Clyde SeaVox salt and freshwater body gazetteer 2021-01-06 creation Inner Seas off the West Coast of Scotland SeaVox salt and freshwater body gazetteer 2021-01-06 creation Sea of the Hebrides 2001-02-20 2013-04-20 SeaVoX Vertical Co-ordinate Coverages 2021-01-06 revision circalittoral SeaVoX Vertical Co-ordinate Coverages 2021-01-06 revision infralittoral Database https://reporting.marine-recorder.org.uk Marine Recorder Online 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 not evaluated The data collection techniques and resulting data have been through the standard SNH quality assurance checks prior to publication of the data through Marine Recorder Online.