{ "@context": "https://schema.org", "@type": "Dataset", "@id": "http://portal.medin.org.uk/portal/json-ld/d64c94b18a4058afa710570310d148d2.jsonld", "identifier": "d64c94b18a4058afa710570310d148d2", "url": "http://portal.medin.org.uk/portal/?details&tpc=d64c94b18a4058afa710570310d148d2", "name": "Atlantic and horse mackerel egg survey from NE Atlantic May 2016", "description": "This dataset contains measurements of temperature, salinity, raised/non-raised mackerel egg numbers, raised/non-raised horse mackerel egg numbers as well as adult fish total length, weight, maturity and sex. Data were obtained on the RV Bjarni S\u00e6mundsson which sampled North of Scotland to Iceland. The project altogether obtained data along the Portuguese coast from February and continued until July to the waters west of Scotland. The egg survey was carried out from the 02/05/2016 to 13/05/2016 with the adult mackerel sampling taking place on 11/05/2016. A total of 4 pelagic trawl hauls were carried out to collect adult mackerel samples using a pelagic WB trawl. Sampling of the fish eggs was carried out with a High Speed Plankton Sampler Gulf VII, which had a 280 micron mesh sized net and an opening diameter of 20cm. A small skrips-depressor of 30 kg was also attached to the sampler. Water filtered during each haul was measured using an internal Valeport electronic flowmeter. An external flowmeter was in turn mounted on the frame, as well as a Seabird 911 plus CTD attached with an altimeter, which measured depth, temperature and salinity. Samples were sorted for fish eggs using the spray method and mackerel eggs were staged according to the sampling protocol. For quality assurance, 10% of the samples were checked and sorted again. All eggs were counted and identified to species level. The data were obtained as a part of an international Atlantic survey, carried out by 10 different European institutes to monitor the spatial and seasonal distribution of Atlantic mackerel and horse mackerel. Planning and coordination of the survey was made within the ICES Working Group for Mackerel and Horse Mackerel Egg Surveys (WGMEGS). In 2016 the following countries participated in this survey: The Faroes, Denmark, Germany, Ireland, Norway, Portugal, Scotland, Spain, the Netherlands and Iceland. The data present here has been obtained by Marine Research Institute in Iceland.", "includedInDataCatalog": { "@id": "http://portal.medin.org.uk/portal/json-ld/catalog.jsonld" }, "conditionsOfAccess": [ "access: No limitations apply", "access: The access conditions to the data are not known", "use: Data usage restrictions are unknown" ], "temporalCoverage": "2016-05-02/2016-05-14", "keywords": [ { "@type": "DefinedTerm", "identifier": "http://vocab.nerc.ac.uk/collection/P02/current/PSAL/", "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P02/current/", "termCode": "PSAL", "name": "Salinity of the water column" }, { "@type": "DefinedTerm", "identifier": "http://vocab.nerc.ac.uk/collection/P02/current/TEMP/", "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P02/current/", "termCode": "TEMP", "name": "Temperature of the water column" }, { "@type": "DefinedTerm", "identifier": "http://vocab.nerc.ac.uk/collection/P02/current/FREP/", "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P02/current/", "termCode": "FREP", "name": "Fish reproduction" }, { "@type": "DefinedTerm", "identifier": "http://vocab.nerc.ac.uk/collection/L13/current/UK/", "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/L13/current/", "termCode": "UK", "name": "unknown" }, { "@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/P22/current/28/", "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P22/current/", "termCode": "28", "name": "Oceanographic geographical features" }, { "@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/N01/current/NDGO0003/", "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/N01/current/", "termCode": "NDGO0003", "name": "Natural Environment Research Council Designated Data Centres" } ], "spatialCoverage": { "@type": "Place", "geo": { "@type": "GeoShape", "box": "58.75 -21.76 63.25 -4.25" }, "additionalProperty": [ { "@type": "PropertyValue", "propertyID": "http://www.opengis.net/def/crs/OGC/1.3/CRS84", "value": "urn:ogc:def:crs:EPSG:4326" } ] }, "author": [ { "@type": "Organization", "name": "Marine Research Institute", "description": "owner", "email": "hafogvatn@hafogvatn.is", "telephone": "+354 575 2000", "address": { "@type": "PostalAddress", "streetAddress": "School Road 4, 101 Reykjav\u00edk", "addressLocality": "Reykjavik", "addressCountry": "Iceland" } } ], "maintainer": [ { "@type": "Organization", "name": "British Oceanographic Data Centre", "description": "custodian", "email": "enquiries@bodc.ac.uk", "address": { "@type": "PostalAddress", "streetAddress": "Joseph Proudman Building, 6 Brownlow Street", "postalCode": "L3 5DA", "addressLocality": "Liverpool", "addressRegion": "Merseyside", "addressCountry": "United Kingdom" } } ], "producer": [ { "@type": "Organization", "name": "Marine Research Institute", "description": "originator", "email": "hafogvatn@hafogvatn.is", "telephone": "+354 575 2000", "address": { "@type": "PostalAddress", "streetAddress": "School Road 4, 101 Reykjav\u00edk", "addressLocality": "Reykjavik", "addressCountry": "Iceland" } } ], "publisher": [ { "@type": "Organization", "name": "Marine Research Institute", "description": "pointOfContact", "email": "hafogvatn@hafogvatn.is", "telephone": "+354 575 2000", "address": { "@type": "PostalAddress", "streetAddress": "School Road 4, 101 Reykjav\u00edk", "addressLocality": "Reykjavik", "addressCountry": "Iceland" } } ], "provider": [ { "@type": "Organization", "name": "British Oceanographic Data Centre", "description": "distributor", "email": "enquiries@bodc.ac.uk", "address": { "@type": "PostalAddress", "streetAddress": "Joseph Proudman Building, 6 Brownlow Street", "postalCode": "L3 5DA", "addressLocality": "Liverpool", "addressRegion": "Merseyside", "addressCountry": "United Kingdom" } } ], "creator": [ { "@type": "Organization", "name": "Marine Research Institute", "description": "owner", "email": "hafogvatn@hafogvatn.is", "telephone": "+354 575 2000", "address": { "@type": "PostalAddress", "streetAddress": "School Road 4, 101 Reykjav\u00edk", "addressLocality": "Reykjavik", "addressCountry": "Iceland" } } ], "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." } }