{"datasetrec":{"DasID":9043,"Acronym":null,"StandardTitle":"Megafauna composition in Aurora seamount and hydrothermal vent field (High Arctic) identified during the 'HACON expedition 2019' with the RV Kronprins Haakon (cruise no. 2019708)","OrigTitle":null,"OrigTitleLangID":null,"OrigTitleLangCode":null,"OrigTitleLang":null,"OrigTitleLangNL":null,"VersionName":null,"ContactEmail":null,"VersionDate":"Mar 30 2026 12:00AM","VersionDay":null,"VersionMonth":null,"VersionYear":null,"SizeReference":null,"EngAbstract":"The Aurora seamount and hydrothermal field, located in the western Gakkel Ridge of the Central Arctic Ocean, was first identified in 2001. The dataset presented here was collected during the HACON19 research cruise onboard of the RV Kronprins Haakon, as part the international HACON project (Hot vents in an ice-covered ocean: the role of the Arctic as a connectivity pathway between ocean basins). This campaign used the Ocean Floor Observation and Bathymetry System (OFOBS), which is a towed underwater sled equipped with high-resolution still and video cameras. This dataset provides density data (individuals per square meter) for benthic megafauna (organisms greater than 2 cm) inhabiting the Aurora Seamount, its hydrothermal vent field, and surrounding areas. The data were collected between October 1 and October 15, 2019. In addition to the biological density measurements, the dataset includes environmental context information such as observation depth and substrate type.","EngDescr":"<p><strong>Sampling methods:</strong><br>Observations were identified based on still image frames collected along several exploratory transects, and captured by a towed camera system (Ocean Floor Observation and Bathymetry System – OFOBS), which was equipped with both a high-resolution still camera and a high-definition video camera.</p><p>Method step description:</p><ol><li>Each still image was annotated using the online annotation platform BIIGLE (Langenkämper et al., 2017; https://biigle.de) for the identification and quantification of all living benthic megafauna organisms (&gt;2cm), seafloor substrate type, and description of any other seafloor characteristics.</li></ol><p>&nbsp;</p><p><strong>Acknowledgements:</strong><br>AURORA: Bringing Deep-Sea Biodiversity Data to Light. Funded through the DTO-BioFlow project, which is supported by the European Union (Grant Agreement No. 101112823). HACON project - Hot vents in an ice-covered ocean: the role of the Arctic as a connectivity pathway between ocean basins, funded by FRINATEK call in the FRIPRO programme of the Research Council of Norway and coordinated by NIVA. Data creators are also funded by national funds through FCT – Fundação para a Ciência e a Tecnologia I.P., under the project CESAM-Centro de Estudos do Ambiente e do Mar, references UID/50017/2025 (doi.org/10.54499/UID/50017/2025) and LA/P/0094/2020 (doi.org/10.54499/LA/P/0094/2020).</p>","OrigAbstract":null,"OrigDescr":null,"Comments":null,"ReleaseDate":"Mar 30 2026 12:00AM","ReleaseDate0":"2026-03-30","OrigDescrLang":null,"EmbargoDate":null,"OrigDescrLangNL":null,"OrigLangCode":null,"OrigLangCodeExtended":null,"OrigLangID":null,"DescrCompFlag":null,"DescrTransFlag":null,"Citation":"Ramalho S, Hilário A, Santos J, Araújo S M, Ramirez-Llodra E, Matos F L (2026). Megafauna composition in Aurora seamount and hydrothermal vent field (High Arctic) identified during the 'HACON expedition 2019' with the RV Kronprins Haakon (cruise no. 2019708). Flanders Marine Institute.","AccessConstraints":null,"UDate":"2026-04-27","CDate":"2026-04-07","CurrencyDate":null,"RevisionDate":null,"DateLastModified":{"date":"2026-04-27 13:20:44.083000","timezone_type":1,"timezone":"+00:00"},"CheckedFlag":0,"PublicFlag":1,"VlizCoreFlag":1,"MarineFlag":1,"FreshFlag":null,"BrackishFlag":null,"TerrestrialFlag":null,"StatusID":1,"DasType":"Data","DasTypeID":1,"DasOrigin":"Research: field survey","Progress":null,"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":"Prior to publication data undergo quality control checked which are described in https://github.com/EMODnet/EMODnetBiocheck?tab=readme-ov-file#understanding-the-output","AccConID":21},"dois":null,"spcols":[{"SpColID":619,"SpName":"available through EurOBIS"},{"SpColID":552,"SpName":"EMODNET"},{"SpColID":39,"SpName":"VLIZ Acknowledged Publications"}],"keywords":[{"ThesaurusTerm":"Benthic fauna","ThesTypID":1,"ThesType":"ASFA Thesaurus List","Code":null,"Description":null,"OrigThesTerm":"Benthic fauna","DutchTerm":"Benthische fauna","URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Bio-geographical regions","ThesTypID":7,"ThesType":"INSPIRE themes","Code":"br","Description":"Areas of relatively homogeneous ecological conditions with common characteristics.","OrigThesTerm":"Bio-geographical regions","DutchTerm":"Biogeografische gebieden","URI":"https://inspire.ec.europa.eu/theme/br","DasKeywordDescr":null},{"ThesaurusTerm":"Biota","ThesTypID":16,"ThesType":"INSPIRE Topics","Code":"biota","Description":"Flora and/or fauna in natural environment.","OrigThesTerm":"Biota","DutchTerm":"Biota","URI":"https://inspire.ec.europa.eu/metadata-codelist/TopicCategory/biota","DasKeywordDescr":null},{"ThesaurusTerm":"Deep sea","ThesTypID":1,"ThesType":"ASFA Thesaurus List","Code":null,"Description":null,"OrigThesTerm":"Deep sea","DutchTerm":"Diepzee","URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Environment","ThesTypID":16,"ThesType":"INSPIRE Topics","Code":"environment","Description":"Environmental resources, protection and conservation.","OrigThesTerm":"Environment","DutchTerm":"Milieu","URI":"https://inspire.ec.europa.eu/metadata-codelist/TopicCategory/environment","DasKeywordDescr":null},{"ThesaurusTerm":"Geoscientific Information","ThesTypID":16,"ThesType":"INSPIRE Topics","Code":"geoscientificInformation","Description":"Information pertaining to earth sciences.","OrigThesTerm":"Geoscientific Information","DutchTerm":"Geowetenschappelijke informatie","URI":"https://inspire.ec.europa.eu/metadata-codelist/TopicCategory/geoscientificInformation","DasKeywordDescr":null},{"ThesaurusTerm":"Habitats and biotopes","ThesTypID":7,"ThesType":"INSPIRE themes","Code":"hb","Description":"Geographical areas characterised by specific ecological conditions, processes, structure, and (life support) functions that physically support the organisms that live there. 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