This is the OBIS extraction of the Ocean Tracking Network and Department of Fisheries and Oceans Canada (DFO) Gulf of St. Lawrence Herring, consisting of the release tagging metadata, i.e. the location and date when the tagged animal was released, and summarized detection events of tagged individuals.\n If readers are interested in the source dataset they may also inquire with the project PIs as listed here or on the OTN web site (https://members.oceantrack.org/project?ccode=GSLHER).\n
Abstract:Atlantic herring are an abundant and highly migratory pelagic fish that inhabit the Gulf of St. Lawrence (GSL). In the northern GSL, they are managed and assessed as two discrete stocks; one along the west coast of Newfoundland (NAFO division 4R) and another on the north coast of Quebec (NAFO division 4S). However, herring schools undertake extensive annual migrations between feeding, spawning and overwintering areas which are poorly understood. There is some evidence from mark-recapture studies and commercial fishery data that mixing occurs between the herring stocks in 4R and eastern 4S. Biological differences were also observed between the herring inhabiting the eastern and western regions of 4S, suggesting that 4S may comprise two separate stocks. Stock assessment relies on the assumption that stock units are closed, and that no mixing occurs between units. When this assumption is violated, the results of stock assessments may be inaccurate, which can confound management strategies. This project is funded by the DFO Competitive Science Research Fund (CSRF) and will address this knowledge gap by employing acoustic telemetry to determine the seasonal movements and distribution patterns of the herring stocks within 4RS. The lack of information on stock structure has been identified as the main source of uncertainty at the last 4S herring stock assessment. The overall objective of the project is to use acoustic telemetry to monitor the spatial and temporal movement patterns of the Atlantic herring stocks in the northern GSL in relation to fishery management areas (i.e., NAFO divisions 4R and 4S). Specific objectives are: 1. Provide a detailed description of the seasonal migratory patterns of Atlantic herring in the northern GSL; 2. Determine the degree of mixing between herring stocks along the lower north shore of Quebec (eastern region of NAFO division 4S) and the proximal west coast of Newfoundland (NAFO division 4R); 3. Determine the degree of mixing between herring stocks in the eastern and western regions of NAFO division 4S; 4. Provide new information to DFO biologists and resource managers on herring stock structure in the northern GSL to improve the accuracy of stock assessments and their use in fishery management.
","language":"eng","homepage":"https://members.oceantrack.org/project?ccode=GSLHER","logoUrl":"https://members.oceantrack.org/@@site-logo/logo.png","citation":{"text":"Émond, K., Nilo, P. 2024. Acoustic telemetry findings in seasonal migration, distribution patterns and structure of Atlantic herring (Clupea harengus) 4RS stocks in the Gulf of St. Lawrence.. 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K., Nilo, P. 2024. Acoustic telemetry findings in seasonal migration, distribution patterns and structure of Atlantic herring (Clupea harengus) 4RS stocks in the Gulf of St. Lawrence. In: Ocean Tracking Network Data Centre, Halifax Canada / otndc@dal.ca Retrieved: 2026-03-05 from db.load.oceantrack.org","citationProvidedBySource":false}],"curatorialUnits":[],"taxonomicCoverages":[{"description":"Species included below are tagged by this project and have left any embargo. Other individuals or species may later be appended to this dataset.","coverages":[{"scientificName":"Clupea harengus","commonName":"Atlantic herring","rank":{"verbatim":"species","interpreted":"SPECIES"}}]}],"geographicCoverages":[{"description":"QC, NL","boundingBox":{"minLatitude":46.91,"maxLatitude":53.26,"minLongitude":-64.58,"maxLongitude":-55.12,"globalCoverage":false}}],"temporalCoverages":[{"@type":"range","start":"2021-09-01T00:00:00.000+00:00","end":"2021-09-01T00:00:00.000+00:00"}],"keywordCollections":[{"thesaurus":"n/a","keywords":["ACOUSTIC TAGS"]},{"thesaurus":"Global Change Master Directory (GCMD)","keywords":["EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > FISH"]},{"thesaurus":"GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type.xml","keywords":["Occurrence"]},{"thesaurus":"GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type_2015-07-10.xml","keywords":["Samplingevent"]}],"project":{"title":"Seasonal migration and distribution patterns of Atlantic herring (Clupea harengus) in the northern Gulf of St. Lawrence","contacts":[{"type":"PRINCIPAL_INVESTIGATOR","primary":false,"userId":["http://orcid.org/0000-0002-6760-6280"],"firstName":"Kim","lastName":"Émond","position":[],"email":[],"phone":[],"homepage":[],"address":[]}],"funding":"No funding information for this project was provided to OTN for publication.\n \n OTN is a research and technology development initiative headquartered at Dalhousie University, in Halifax, Nova Scotia. OTN is funded by the Canada Foundation for Innovation (CFI) and is grateful to have once received funding from the Natural Sciences and Engineering Research Council of Canada (NSERC) and the Social Sciences and Engineering Research Council of Canada (SSHRC).","awards":[],"studyAreaDescription":"No study area description for this project was provided to OTN for publication.","designDescription":"A wide range of aquatic species are tagged with small electronic transmitters, surgically implanted or attached externally, which can operate for up to 20 years. Acoustic receivers arranged in line on the ocean floor as well as attached to buoys, gliders and large animals (e.g. grey seals) pick up the coded acoustic signals from these tags identifying each tagged sea creature that passes within half a kilometer of the receiver. Data collected by these listening stations are subsequently uploaded to one of many compatible data nodes, adding to the reach of an intercompatible network of networks designed and maintained by the Ocean Tracking Network, producing current and reliable records for every part of the globe. Certain classes of electronic tags and listening equipment (receivers) may also be outfitted or co-located with sensors to measure the ocean's temperature, depth, salinity, currents, chemistry, and other properties.","relatedProjects":[],"abstract":"Atlantic herring are an abundant and highly migratory pelagic fish that inhabit the Gulf of St. Lawrence (GSL). In the northern GSL, they are managed and assessed as two discrete stocks; one along the west coast of Newfoundland (NAFO division 4R) and another on the north coast of Quebec (NAFO division 4S). However, herring schools undertake extensive annual migrations between feeding, spawning and overwintering areas which are poorly understood. There is some evidence from mark-recapture studies and commercial fishery data that mixing occurs between the herring stocks in 4R and eastern 4S. Biological differences were also observed between the herring inhabiting the eastern and western regions of 4S, suggesting that 4S may comprise two separate stocks. Stock assessment relies on the assumption that stock units are closed, and that no mixing occurs between units. When this assumption is violated, the results of stock assessments may be inaccurate, which can confound management strategies. This project is funded by the DFO Competitive Science Research Fund (CSRF) and will address this knowledge gap by employing acoustic telemetry to determine the seasonal movements and distribution patterns of the herring stocks within 4RS. The lack of information on stock structure has been identified as the main source of uncertainty at the last 4S herring stock assessment. The overall objective of the project is to use acoustic telemetry to monitor the spatial and temporal movement patterns of the Atlantic herring stocks in the northern GSL in relation to fishery management areas (i.e., NAFO divisions 4R and 4S). Specific objectives are: 1. Provide a detailed description of the seasonal migratory patterns of Atlantic herring in the northern GSL; 2. Determine the degree of mixing between herring stocks along the lower north shore of Quebec (eastern region of NAFO division 4S) and the proximal west coast of Newfoundland (NAFO division 4R); 3. Determine the degree of mixing between herring stocks in the eastern and western regions of NAFO division 4S; 4. Provide new information to DFO biologists and resource managers on herring stock structure in the northern GSL to improve the accuracy of stock assessments and their use in fishery management."},"samplingDescription":{"studyExtent":"Program started 2021-09-01 and ran until None","sampling":"Acoustic tags released.","qualityControl":"OTN species names are verified using the World Register of Marine Species (WoRMS). If species names on new data cannot be verified against (a) known valid names in OTN, and/or (b) WoRMs the Data Provider will be notified so they can check they are correct. Names that cannot be placed after checking with WoRMS are, where possible, placed on the basis of other authoritative sources, such as the Fishbase or ITIS; and once completely verified a request will be sent to WoRMS for addition of the verified species name.\nhttp://members.oceantrack.org/data/discovery/byspecies","methodSteps":["This resource was created by the Ocean Tracking Network Data Centre as a summarized representation of animal presence determined by electronic tagging efforts. Darwin Core (DwC) records were extracted from the OTN database and filtered and summarized according to international agreed-upon standards."]},"countryCoverage":[],"collections":[],"dataDescriptions":[{"name":"Gulf of St. Lawrence Herring","charset":"ASCII","url":"https://members.oceantrack.org/project?ccode=GSLHER","format":"HTM"}],"dataLanguage":"eng","purpose":"These data are for display on the OBIS portal and associated mapping programs and for download to personal computers for ad-hoc end-user analysis.
","additionalInfo":"Access Constraints: none\nUse Constraints:\nAcknowledge the use of specific records from contributing databases in the form appearing in the 'Citation' field thereof (if any); and acknowledge the use of the OBIS facility.\n\nFor information purposes, email to info@obis.org the full citation of any publication made (printed or electronic) that cites OBIS or any constituent part.\n\nRecognize the limitations of data in OBIS. See https://manual.obis.org/policy.html#disclaimer for more details","pubDate":"2026-06-15T00:00:00.000+00:00","maintenanceUpdateFrequency":"UNKNOWN","maintenanceDescription":"","license":"http://creativecommons.org/licenses/by/4.0/legalcode","dwca":{"coreType":"http://rs.tdwg.org/dwc/terms/Event","extensions":["http://rs.tdwg.org/dwc/terms/Occurrence","http://rs.iobis.org/obis/terms/ExtendedMeasurementOrFact"],"modified":"2026-06-15T15:10:04.862+00:00"},"category":["Tracking"],"approximateCounts":{"occurrenceCount":6859}}