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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): Metrics 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.950983, 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. B. glaciale is a small fish species that contribute to carbon flux to the deep basins of the open ocean, and is thus considered an important element of the biological carbon pump (BCP). Data submitted is length and weight of fish analyzed for stomach content. 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
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
The Research Council of Norway (RCN), grant/award no. 203871: Harvest II
The Research Council of Norway (RCN), grant/award no. 280546: HARMES
The Research Council of Norway (RCN), grant/award no. 301077: HypOnFjordFish
Coverage:
Median Latitude: 61.506316 * Median Longitude: -37.545263 * 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: 1010 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:
Maturity:
Immature (1): The gonads are small. No visible egg/milk.
Maturing (2): The gonads are larger in volume. Visible egg/milk, but not running.
Spawning (3): Running gonads. A light press on the abdomen causes egg/milk to come out.
Spent/Resting (4): The gonads are small, slack and bloody. Regeneration begins, gonads are slightly larger and fuller than in immature stage. No visible egg/milk.
Unknown (5): Only used if there is uncertainty between stages immature and spent/resting.
Stomach fullness:
Empty (1): The stomach is completely empty, perhaps except for a little water.
Very little content (2): So small that the stomach preferably needs to be opened to confirm it is not empty.
Some content (3): It appears clearly from the outside that the stomach is not empty.
Full (4): The stomach is full, but not bursting.
Bursting (5): The abdomen is clearly distended and tight. The content is visible through the lining.
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
9Specimen identificationSpec IDKnutsen, TorVisual identification (VID)
10Species, unique identificationSpecies UIDKnutsen, TorVisual identification (VID)
11Species, unique identification (URI)Species UID (URI)Knutsen, TorVisual identification (VID)
12Species, unique identification (Semantic URI)Species UID (Semantic URI)Knutsen, TorVisual identification (VID)
13Fish, standard lengthFish SLmmKnutsen, TorFish measuring board
14Fish, total lengthFish TLmmKnutsen, TorFish measuring board
15SexSexKnutsen, TorVisual identification (VID)
16Maturation stageMat stKnutsen, TorVisual identification (VID)
17Otolith, commentOtolithKnutsen, Torcollected yes/no
18Stomach fullnessStom fillKnutsen, TorVisual identification (VID)
19Parasites, presenceParasitesKnutsen, TorVisual identification (VID)
20Fish, wet massFish wmgKnutsen, TorWeighted
21Liver, wet massLiver wmgKnutsen, TorWeighted
22Liver, dry massLiver dmgKnutsen, TorWeighted
23Gonad, wet massGon WMgKnutsen, TorWeighted
24Gonad, dry massGon dmgKnutsen, TorWeighted
25Stomach, wet massStom wmgKnutsen, TorWeightedfull
26Stomach, wet massStom wmgKnutsen, TorWeightedempty
27Fish, gutted, wet massFish gutted wmgKnutsen, TorWeighted
28Fish, gutted, dry massFish gutted dmgKnutsen, TorWeighted
29Quality codeQualityKnutsen, Toranalysis of biological material
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
4159 data points

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