{ "@context": "https://schema.org", "@type": "Dataset", "@id": "http://portal.medin.org.uk/portal/json-ld/54b0db41aa9b52bd7e632c85958a6e3f.jsonld", "identifier": "54b0db41aa9b52bd7e632c85958a6e3f", "url": "http://portal.medin.org.uk/portal/?details&tpc=54b0db41aa9b52bd7e632c85958a6e3f", "name": "1999-2001 University Marine Biological Station Millport (UMBSM) Clyde Sea Rapid Methodologies Survey", "description": "This dataset consists of pooled samples from the Clyde Sea portion of EC Study Contract 98/017.\r\n A study was carried out which investigated the effectiveness of rapid methodologies in quantifying the effects which otter trawls have on the marine environment. The research evaluates and compares rapid methodologies as alternatives to traditional (slow and costly) methods. Investigations were carried out on Norway lobster (Nephrops norvegicus) grounds in the Clyde Sea area, in Scotland, and a 'multi-species' fishery ground in the Aegean (Crete). Sample sites were selected to reflect a range of trawl impacts on the benthic environment. Scottish sites which were investigated covered three levels of fishing intensity; heavy, moderate and light. Aegean sites covered a succession of trawling intensities. An experimentally manipulated site was created off the island of Crete in an area previously unfished, to compare trawl impact.\r\n There were four categories of rapid methodologies which were evaluated. The categories include; acoustic, visual, biological and sedimentological. Acoustic methods of evaluating trawl impact included bottom discriminating sonar (RoxAnn(trademark)) and sidescan sonar. Trawling effects were detected by the latter. Visual methods included the use of underwater television, which was either deployed on a tow-sledge or on a remote operated vehicle (ROV). The study found that underwater television produced a better rapid assessment on the ecological impacts of trawling than other methodologies evaluated in this study. Biological methods investigated the tissue damage of selected species (molluscs, crustaceans, echinoderms), population density and the functional group composition of sampled communities. Benthic megafauna (mostly epifauna) was collected from sites of varying trawling intensity. A 2-metre beam trawl was used for sites in the Clyde Sea area while an Agassiz trawl was used for Aegean sites. Sedimentological methods of assessment included granulometry (geotechnical tests and sediment profile imagery (SPI). SPI provided a relatively rapid evaluation of trawled and untrawled site comparisons.\r\n The study provides a recommendation list of techniques which are suitable for rapid assessment of otter trawl impacts on soft substrata. The operational constraints and cost effectiveness of various methodologies are discussed.", "includedInDataCatalog": { "@id": "http://portal.medin.org.uk/portal/json-ld/catalog.jsonld" }, "conditionsOfAccess": [ "otherRestrictions: Open Access" ], "distribution": [ { "@type": "DataDownload", "name": "DOI link", "contentUrl": "http://doi.org/10.17031/tpgjrv" } ], "temporalCoverage": "1999-04-01/2001-06-01", "keywords": [ { "@type": "DefinedTerm", "identifier": "http://vocab.nerc.ac.uk/collection/N01/current/NDGO0001/", "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/N01/current/", "termCode": "NDGO0001", "name": "Marine Environmental Data and Information Network" }, { "@type": "DefinedTerm", "identifier": "http://vocab.nerc.ac.uk/collection/P22/current/32/", "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P22/current/", "termCode": "32", "name": "Species distribution" }, { "@type": "DefinedTerm", "identifier": "http://vocab.nerc.ac.uk/collection/P02/current/FATX/", "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P02/current/", "termCode": "FATX", "name": "Fish abundance in water bodies" }, { "@type": "DefinedTerm", "identifier": "http://vocab.nerc.ac.uk/collection/P02/current/GP080/", "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P02/current/", "termCode": "GP080", "name": "Fishing by-catch" } ], "spatialCoverage": { "@type": "Place", "geo": { "@type": "GeoShape", "box": "55.5833 -5.1667 56 -4.8333" }, "name": { "@type": "DefinedTerm", "identifier": "http://vocab.nerc.ac.uk/collection/C19/current/1_4/", "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/C19/current/", "termCode": "1_4", "name": "Irish Sea" }, "additionalProperty": [ { "@type": "PropertyValue", "propertyID": "http://www.opengis.net/def/crs/EPSG/0/0", "value": "urn:ogc:def:crs:EPSG:0" }, { "@type": "PropertyValue", "propertyID": "http://www.opengis.net/def/crs/OGC/1.3/CRS84", "value": "urn:ogc:def:crs:EPSG:4326" } ] }, "maintainer": [ { "@type": "Organization", "name": "Data Archive for Seabed Species and Habitats (DASSH)", "description": "custodian", "email": "dassh.enquiries@mba.ac.uk", "telephone": "01752 633102", "faxNumber": "01752 633291", "address": { "@type": "PostalAddress", "streetAddress": "Marine Biological Association of the UK,\r\n The Laboratory,\r\n Citadel Hill", "postalCode": "PL1 2PB", "addressLocality": "Plymouth" } } ], "producer": [ { "@type": "Organization", "name": "University Marine Biological Station (UMBS), Millport", "description": "originator", "email": "philip.smith@millport.gla.ac.uk", "address": { "@type": "PostalAddress", "postalCode": "KA28 0EG", "addressLocality": "Millport" } } ], "publisher": [ { "@type": "Organization", "name": "Data Archive for Seabed Species and Habitats (DASSH)", "description": "pointOfContact", "email": "dassh.enquiries@mba.ac.uk", "telephone": "01752 633102", "faxNumber": "01752 633291", "address": { "@type": "PostalAddress", "streetAddress": "Marine Biological Association of the UK,\r\n The Laboratory,\r\n Citadel Hill", "postalCode": "PL1 2PB", "addressLocality": "Plymouth" } } ], "provider": [ { "@type": "Organization", "name": "Data Archive for Seabed Species and Habitats (DASSH)", "description": "distributor", "email": "dassh.enquiries@mba.ac.uk", "telephone": "01752 633102", "faxNumber": "01752 633291", "address": { "@type": "PostalAddress", "streetAddress": "Marine Biological Association of the UK,\r\n The Laboratory,\r\n Citadel Hill", "postalCode": "PL1 2PB", "addressLocality": "Plymouth" } } ], "creator": [ { "@type": "Organization", "name": "University Marine Biological Station (UMBS), Millport", "description": "originator", "email": "philip.smith@millport.gla.ac.uk", "address": { "@type": "PostalAddress", "postalCode": "KA28 0EG", "addressLocality": "Millport" } } ], "sdPublisher": { "@type": "Organization", "url": "https://portal.medin.org.uk/portal/", "name": "Marine Environmental Data and Information Network (MEDIN)", "description": "The MEDIN portal contains information about 19493 marine datasets from over 600 UK organisations. Metadata are an enduring resource and contact details are publicly available for a long time. \r\n\t\tPlease contact us (enquiries@medin.org.uk) if you find your contact details on the MEDIN portal and do not consent to this. \r\n\t\tYou can now use our GitHub repository to report issues or access related documents. Metadata records are updated daily and were last updated 2026-04-19. Record deletion takes place weekly and the latest occurred 2026-04-12." } }