{"datasetrec":{"DasID":4130,"Acronym":null,"StandardTitle":"DFO Maritimes Region Research Vessel Trawl Surveys - Fish Observations","OrigTitle":null,"OrigTitleLangID":null,"OrigTitleLangCode":null,"OrigTitleLang":null,"OrigTitleLangNL":null,"VersionName":"1","ContactEmail":null,"VersionDate":null,"VersionDay":null,"VersionMonth":null,"VersionYear":null,"SizeReference":null,"EngAbstract":"This is the OBIS-formatted view of the Canadian Department of Fisheries and Oceans (DFO) Maritimes Research Vessel Trawl Surveys. This OBIS product reports the abundance and weight of demersal fish species captured by a variety of trawl gear and vessles.","EngDescr":"This is the OBIS-formatted view of the Canadian Department of Fisheries and Oceans (DFO) Maritimes Research Vessel Trawl Surveys. This data is created using a Structured Query Language (SQL) program run against the DFO production database. Refer to the parent metadata record for more information about the surveys. \r\n\r\nThis OBIS product reports the abundance and weight of demersal fish species captured by a variety of trawl gear and vessles. Catch data appear in the \"ObservedIndividualCount\" and \"ObservedWeight\" OBIS fields and have been normalised for distance towed. The swept area of each tow can be found in the \"SampleSize\" field of the OBIS schema. Care should be taken when using multiple types of gear since the catchability of different fish species varies from gear to gear. The OBIS field \"Locality\" contains the DFO stratum number where each tow was conducted. The OBIS field \"CollectionCode\" identifies which survey series each data record comes from. Strata statistics required to derive stratified random estimates of catch abundance and biomass can be found on the OBISCanada website or upon request. \r\n\r\nOBIS Schema fields implemented in this data set are: \r\nInstitutionCode, CatalogNumber, Citation, FieldNumber, Collector, YearCollected, MonthCollected, DayCollected, TimeOfDay, StartYearCollected, StartMonthCollected, StartDayCollected, StartTimeOfDay, EndYearCollected, EndMonthCollected, EndDayCollected, EndTimeOfDay, ContinentOcean, Locality, StartLatitude, StartLongitude, EndLatitude, EndLongitude, Latitude, Longitude, MinimumDepth, MaximumDepth, Temperature, SampleSize, ScientificName, Kingdom, Phylum, Class, Order, Family, Genus, Species, ObservedWeight, ObservedIndividualCount.","OrigAbstract":null,"OrigDescr":null,"Comments":null,"ReleaseDate":null,"ReleaseDate0":null,"OrigDescrLang":null,"EmbargoDate":null,"OrigDescrLangNL":null,"OrigLangCode":null,"OrigLangCodeExtended":null,"OrigLangID":null,"DescrCompFlag":0,"DescrTransFlag":0,"Citation":"Clark, D., Branton, B. 2007. DFO Maritimes Region Research Vessel Trawl Surveys - Fish Observations. OBIS Canada Digital Collections. OBIS Canada, Bedford Institute of Oceanography, Dartmouth, Nova Scotia, Canada, Version 1, Digital, retrieved from http://iobis.org/.","AccessConstraints":null,"UDate":"2013-03-19","CDate":"2013-03-08","CurrencyDate":null,"RevisionDate":null,"DateLastModified":{"date":"2026-05-14 01:44:00.153333","timezone_type":1,"timezone":"+02:00"},"CheckedFlag":0,"PublicFlag":1,"VlizCoreFlag":1,"MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"StatusID":1,"DasType":"Data","DasTypeID":1,"DasOrigin":"Monitoring: field survey","Progress":"Completed","AccessConstraint":"Attribution (CC BY)","AccConstrEN":"Attribution (CC BY)","AccConstrDisplay":"<a rel=\"license\" href=\"https://creativecommons.org/licenses/by/4.0/\" target=\"_blank\"><img alt=\"Creative Commons License\" style=\"border:0px;height:15px;width:80px;vertical-align:middle;\" src=\"https://www.marinespecies.org/aphia/images/cc/by.png\" /></a> This dataset is licensed under a <a rel=\"license\" href=\"https://creativecommons.org/licenses/by/4.0/\" target=\"_blank\">Creative Commons Attribution 4.0 International License</a>.","License":"https://creativecommons.org/licenses/by/4.0/","AccConstrDescription":"This license lets others distribute, remix, tweak, and build upon your work, even commercially, as long as they credit you for the original creation. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.","Lineage":null,"AccConID":21},"dois":null,"spcols":null,"keywords":[{"ThesaurusTerm":"AN, North Atlantic","ThesTypID":34,"ThesType":"ASFA Geoterms","Code":null,"Description":null,"OrigThesTerm":"AN, North Atlantic","DutchTerm":null,"URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Canada","ThesTypID":34,"ThesType":"ASFA Geoterms","Code":null,"Description":null,"OrigThesTerm":"Canada","DutchTerm":null,"URI":null,"DasKeywordDescr":null}],"parents":null,"children":null,"othrel":null,"othrelrev":[{"DasID":4091,"Acronym":"OBIS-Canada","StandardTitle":"Canadian Ocean Biodiversity Information System","Relation":"Published dataset","RelationY":"Published in","RelID":13,"doi":null,"vlizDoi":null}],"ownerships":[{"OrderNr":1,"Surname":null,"Firstname":null,"Initials":null,"PerPublicFlag":null,"AdrID":null,"Email":null,"InsPublicFlag":1,"Acronym":"BIO","OrigNameLangCode":null,"OrigNameLangID":null,"FullOrigName":null,"InsOwnerCNT":1,"PersID":null,"InsID":4211,"FullInstitute":"Government of Canada; Department of Fisheries and Oceans; Bedford Institute of Oceanography","RoleID":68,"Role":"Data provider","OrigName":null,"StandardName":"Bedford Institute of Oceanography","FullAcronym":"DFO-BIO","ORC":null,"ROR":null},{"OrderNr":2,"Surname":null,"Firstname":null,"Initials":null,"PerPublicFlag":null,"AdrID":null,"Email":null,"InsPublicFlag":1,"Acronym":"DFO","OrigNameLangCode":null,"OrigNameLangID":null,"FullOrigName":null,"InsOwnerCNT":1,"PersID":null,"InsID":4251,"FullInstitute":"Government of Canada; Department of Fisheries and Oceans","RoleID":20,"Role":"Data owner","OrigName":null,"StandardName":"Department of Fisheries and Oceans","FullAcronym":"DFO","ORC":null,"ROR":null}],"taxterms":[{"DasTaxtTypID":1,"DasTaxtType":"Taxonomic coverage","TaxtID":11873,"TaxTerm":"Pisces","AphiaID":11676,"DutchTerm":"Vissen"}],"frameworks":null,"otherterms":null,"temporal":null,"geographical":[{"GeoTerm":"Canada","DasGeoID":6508,"DasGeoTerm":null,"DasID":4130,"GeotID":566,"X":null,"Y":null,"MaxX":null,"MaxY":null,"StationName":null,"Precision":null,"CoordSystID":null,"GeoDatumID":null,"OrigCoordMinX":null,"OrigCoordMinY":null,"OrigCoordMaxX":null,"OrigCoordMaxY":null,"OrderNr":null,"Projection":null,"GeoDatum":null,"GeoObjectID":2169,"OrigGeoTerm":"Canada","DutchTerm":null},{"GeoTerm":"North Atlantic Ocean","DasGeoID":6507,"DasGeoTerm":null,"DasID":4130,"GeotID":55,"X":null,"Y":null,"MaxX":null,"MaxY":null,"StationName":null,"Precision":null,"CoordSystID":null,"GeoDatumID":null,"OrigCoordMinX":null,"OrigCoordMinY":null,"OrigCoordMaxX":null,"OrigCoordMaxY":null,"OrderNr":null,"Projection":null,"GeoDatum":null,"GeoObjectID":1912,"OrigGeoTerm":"North Atlantic Ocean","DutchTerm":null}],"meastypes":null,"dasthemes":[{"DasThemeID":28,"DasTheme":"Biology > Fish","DasTheme0":"Fish","DutchTerm":"Vis"}],"projects":null,"refs":null,"urls":[{"URL":"gcmd.nasa.gov/r/d/[GCMD]OBIS.DFOgfsDBfish","externalID":null,"URLTypeCode":null,"URLType":"Dataset information","URLTypID":17,"downloadURL":null,"FileName":null}],"pictures":null,"urlmaps":null,"spatreps":null,"fileformats":null,"resmessage":"","complete":1}