Sampling of benthic invertebrates was conducted at five methane seep locations and additional non-seep locations in the Barents Sea and west and north of Svalbard between 2014-2018 between May and Sept. Samples were obtained from grabs, cores, a remotely operated vehicle or dredges. The data set contains the taxa occurrences associated with their carbon and nitrogen stable isotope values.
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from the Norwegian Research Council (grant number 223259).","awards":[],"studyAreaDescription":"Barents Sea including west and north of Svalbard","relatedProjects":[],"abstract":"AeN: https://arvenetternansen.com/;\nCAGE: https://site.uit.no/cage/\nVISTA: https://vista.no/content/governance-vista-programme"},"samplingDescription":{"studyExtent":"Barents Sea including west and north of Svalbard","sampling":"Sampling of benthic macro- and megafauna was conducted inside and outside of cold seeps. Seeps were identified based on acoustic signals from flares visible on an echosounder, and/or visually from camera systems where gas bubbles, microbial mats and methane-derived carbonate outcrops were seen. Fauna were sieved from sediment, sorted and identified to lowest possible taxon, names standardized to WoRMS, and frozen at -20 deg C.","methodSteps":["Tissues were freeze-dried for 24 h, pulverized, weighed into tin capsules, and analyzed for carbon and nitrogen stable isotope composition at the University of Oslo in a Thermo Fisher Scientific EA IsoLink IRMS system. Details in Åström et al. 2022 Frontiers in Marine Science, Sec. Deep-Sea Environments and Ecology, Volume 9, https://doi.org/10.3389/fmars.2022.910558"]},"countryCoverage":[],"collections":[],"dataDescriptions":[],"dataLanguage":"eng","acknowledgements":"The project was funded by VISTA (grant number 6172), the Nansen Legacy project with support from the Norwegian Research Council (grant number 276730), andCAGE Center of Excellence from the Norwegian Research Council (grant number 223259).
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