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Knutsen, Tor; Strand, Espen; Klevjer, Thor Aleksander; Salvanes, Anne Gro Vea; Thorsen Broms, Cecilie; Myhre Sunde, Synne; Aksnes, Dag Lorents; García-Seoane, Eva; Melle, Webjørn (2022): Stomach contents of Benthosema glaciale collected during RV G.O. Sars cruise 2013107 across the North Atlantic in 2013 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.951043, In: Knutsen, T et al. (2022): Benthosema glaciale diet across the North Atlantic [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.951040

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Abstract:
The data is used in a comparative analysis of the diet of one of the globally most numerous myctophids, the Glacier lantern fish Benthosema glaciale, across four deep basins of the North Atlantic. We present taxonomic information, weight and number of prey items of each fish that has stomach content, as long as it has been possible to assign prey to a species or other taxonomic category. Unidentified prey usually had a high degree of digestion and individual items could not be counted, but could be weighed. Sampling were undertaken onboard the RV G.O. Sars during a six week long transatlantic scientific survey from Bergen (Norway) to Nuuk (Greenland) and back to Bergen in May and June 2013. The Harstad trawl is a graded (variable mesh size), small mid-water trawl with 20 m vertical opening and 15 m wing spread (Godø et al., 1993). The Macroplankton trawl on the other hand is a light pelagic trawl that has a nominal 6x6 m trawl opening and mesh size of 3 mm square light opening (8 mm stretched, knot to knot) from the trawl mouth along the entire trawl length to the cod-end (Hassel et al., 2017; Klevjer et al., 2020).
Keyword(s):
Benthosema glaciale; diet; mesopelagic fish; North Atlantic
Supplement to:
Knutsen, Tor; Strand, Espen; Klevjer, Thor Aleksander; Salvanes, Anne Gro Vea; Thorsen Broms, Cecilie; Myhre Sunde, Synne; Aksnes, Dag Lorents; García-Seoane, Eva; Melle, Webjørn (2023): Feeding ecology of Benthosema glaciale across the North Atlantic. Frontiers in Marine Science, 10, 1086607, https://doi.org/10.3389/fmars.2023.1086607
Related to:
Drinkwater, Kenneth F; Sundby, Svein; Wiebe, Peter H (2020): Exploring the hydrography of the boreal/arctic domains of North Atlantic seas: Results from the 2013 BASIN survey. Deep Sea Research Part II: Topical Studies in Oceanography, 180, 104880, https://doi.org/10.1016/j.dsr2.2020.104880
Klevjer, Thor Aleksander; Melle, Webjørn; Knutsen, Tor; Aksnes, Dag Lorents (2020): Vertical distribution and migration of mesopelagic scatterers in four north Atlantic basins. Deep Sea Research Part II: Topical Studies in Oceanography, 180, 104811, https://doi.org/10.1016/j.dsr2.2020.104811
Melle, Webjørn; Klevjer, Thor Aleksander; Drinkwater, Kenneth F; Strand, Espen; Naustvoll, Lars Johan; Wiebe, Peter H; Aksnes, Dag Lorents; Knutsen, Tor; Sundby, Svein; Slotte, Aril; Dupont, Nicolas; Salvanes, Anne Gro Vea; Korneliussen, Rolf; Huse, Geir (2020): Structure and functioning of four North Atlantic ecosystems - A comparative study. Deep Sea Research Part II: Topical Studies in Oceanography, 180, 104838, https://doi.org/10.1016/j.dsr2.2020.104838
Naustvoll, Lars Johan; Melle, Webjørn; Klevjer, Thor Aleksander; Drinkwater, Kenneth F; Strand, Espen; Knutsen, Tor (2020): Dynamics of phytoplankton species composition, biomass and nutrients in the North Atlantic during spring and summer - A trans-Atlantic study. Deep Sea Research Part II: Topical Studies in Oceanography, 180, 104890, https://doi.org/10.1016/j.dsr2.2020.104890
Strand, Espen; Klevjer, Thor Aleksander; Knutsen, Tor; Melle, Webjørn (2020): Ecology of mesozooplankton across four North Atlantic basins. Deep Sea Research Part II: Topical Studies in Oceanography, 180, 104844, https://doi.org/10.1016/j.dsr2.2020.104844
References:
Godø, Olaf Rune; Valdemarsen, J W; Engås, A (1993): Comparison of efficiency of standard and experimental juvenile gadoid sampling trawls. ICES Marine Science Symposium, 196, 196-201
Hassel, Arne; Endresen, Berit; Martinussen, M B; Gjertsen, K; Knutsen, Tor; Johannessen, Magnus E (2017): Håndbok for plankton. Prøvetaking og analyse. Prosedyrer for prøvetaking og pre-analyse av dyre- og planteplankton på forskningsfartøy og i laboratorium på land, versjon 4.0 (Mars 2017). Havforskningsinstituttet, 155 pp.
Klevjer, Thor Aleksander; Melle, Webjørn; Knutsen, Tor; Strand, Espen; Korneliussen, Rolf; Dupont, Nicolas; Salvanes, Anne Gro Vea; Wiebe, Peter H (2020): Micronekton biomass distribution, improved estimates across four north Atlantic basins. Deep Sea Research Part II: Topical Studies in Oceanography, 180, 104691, https://doi.org/10.1016/j.dsr2.2019.104691
Mjanger, H; Svendsen, B V; Senneset, H; Fotland, Å; Fuglebakk, E; Skage, M L; Díaz, Jordi (2019): Handbook for sampling fish, crustaceans and other invertebrates, version 5.0 (October 2019). Havforskningsinstituttet, 149 pp.
Project(s):
Basin Scale Analysis, Synthesis and Integration (EURO-BASIN)
Ecologically and economically sustainable mesopelagic fisheries (MEESO)
Sustainable Management of Mesopelagic Resources (SUMMER)
Funding:
Horizon 2020 (H2020), grant/award no. 817669: Ecologically and economically sustainable mesopelagic fisheries
Horizon 2020 (H2020), grant/award no. 817806: Sustainable management of mesopelagic resources
Seventh Framework Programme (FP7), grant/award no. 264933: Basin Scale Analysis, Synthesis and Integration
Coverage:
Median Latitude: 61.817857 * Median Longitude: -35.972143 * South-bound Latitude: 58.720000 * West-bound Longitude: -54.980000 * North-bound Latitude: 68.370000 * East-bound Longitude: 2.590000
Date/Time Start: 2013-05-15T13:25:00 * Date/Time End: 2013-06-12T15:43:00
Minimum DEPTH, water: 0 m * Maximum DEPTH, water: 1000 m
Event(s):
GS13/107_116-HST (116) * Latitude: 63.010000 * Longitude: -27.910000 * Date/Time Start: 2013-05-15T13:25:00 * Date/Time End: 2013-05-15T14:26:00 * Location: Irminger Sea * Campaign: GS13/107 (Norwegian Trans Atlantic Cruise) * Basis: G. O. Sars (2003) * Method/Device: Harstad trawl
GS13/107_118-HST (118) * Latitude: 61.910000 * Longitude: -32.930000 * Date/Time Start: 2013-05-16T16:31:00 * Date/Time End: 2013-05-16T17:31:00 * Location: Irminger Sea * Campaign: GS13/107 (Norwegian Trans Atlantic Cruise) * Basis: G. O. Sars (2003) * Method/Device: Harstad trawl
GS13/107_120-MPT (120) * Latitude: 61.840000 * Longitude: -33.280000 * Date/Time Start: 2013-05-16T20:31:00 * Date/Time End: 2013-05-16T21:31:00 * Location: Irminger Sea * Campaign: GS13/107 (Norwegian Trans Atlantic Cruise) * Basis: G. O. Sars (2003) * Method/Device: Macroplankton trawl
Comment:
Prey digestion level:
Undigested (1): Digestion has not begun, and the stomach content appears fresh.
Digestion commenced (2): Species can be easily identified.
Advanced digestion (3): The species can no longer be identified but can be separated into systematic groups.
Late-stage digestion (4): Only residues like eyes and robust part of animals can separated into systematic groups.
Nearly complete digestion (5): The stomach contents are stewed or mushy, cannot be identified or counted.
Quality of biological analysis: "Low" was also used to indicate that these fish were considered part of a training set not used in further analysis.
Funding and ship time were also received from the Institute of Marine Research, Bergen, Norway.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventKnutsen, Tor
2Optional event labelEvent 2Knutsen, Tor
3Date/Time of eventDate/TimeKnutsen, Tor
4Date/Time of event 2Date/Time 2Knutsen, Tor
5Latitude of eventLatitudeKnutsen, Tor
6Longitude of eventLongitudeKnutsen, Tor
7DEPTH, waterDepth watermKnutsen, TorGeocode – min
8DEPTH, waterDepth watermKnutsen, TorGeocode – max
9SeriesSeriesKnutsen, Tor
10Species, unique identificationSpecies UIDKnutsen, Torpredator
11Species, unique identification (URI)Species UID (URI)Knutsen, Torpredator
12Species, unique identification (Semantic URI)Species UID (Semantic URI)Knutsen, Torpredator
13Specimen identificationSpec IDKnutsen, Tor
14Specimen identificationSpec IDKnutsen, Tor
15Sample IDSample IDKnutsen, Tor
16Stomach content, wet massStom con wmgKnutsen, TorWeighted
17Stomach content, dry massStom con dmgKnutsen, TorWeighted
18Taxon/taxaTaxaKnutsen, TorVisual identification (VID)prey
19Taxon/taxa, unique identification (URI)Taxa UID (URI)Knutsen, TorVisual identification (VID)prey
20Taxon/taxa, unique identification (Semantic URI)Taxa UID (Semantic URI)Knutsen, TorVisual identification (VID)prey
21Prey digestion levelPrey dig levelKnutsen, TorVisual identification (VID)
22Prey, lengthPrey lmmKnutsen, TorVisual identification (VID)
23Life stageLife stageKnutsen, TorVisual identification (VID)
24Number of preyN prey#Knutsen, TorCounted
25Quality codeQualityKnutsen, Toranalysis of biological material
26Sample commentSample commentKnutsen, Tor
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2804 data points

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