Publication Date:
2023-09-02
Description:
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).
Keywords:
116; 118; 120; 122; 125; 127; 128; 134; 139; 140; 153; 154; 162; 176; Basin Scale Analysis, Synthesis and Integration; Benthosema glaciale; Counted; Date/Time of event; Date/Time of event 2; DEPTH, water; diet; Ecologically and economically sustainable mesopelagic fisheries; EURO-BASIN; Event label; G. O. Sars (2003); GS13/107; GS13/107_116-HST; GS13/107_118-HST; GS13/107_120-MPT; GS13/107_122-HST; GS13/107_125-MPT; GS13/107_127-MPT; GS13/107_128-MPT; GS13/107_134-MPT; GS13/107_139-MPT; GS13/107_140-MPT; GS13/107_153-MPT; GS13/107_154-MPT; GS13/107_162-MPT; GS13/107_176-MPT; Harstad trawl; Iceland Sea; Irminger Sea; Labrador Sea; Latitude of event; Life stage; Longitude of event; Macroplankton trawl; MEESO; mesopelagic fish; North Atlantic; Norwegian Sea, Arctic Ocean; Norwegian Trans Atlantic Cruise; Number of prey; Optional event label; Prey, length; Prey digestion level; Quality code; Sample comment; Sample ID; Series; Species, unique identification; Species, unique identification (Semantic URI); Species, unique identification (URI); Specimen identification; Stomach content, dry mass; Stomach content, wet mass; SUMMER; Sustainable Management of Mesopelagic Resources; Taxon/taxa; Taxon/taxa, unique identification (Semantic URI); Taxon/taxa, unique identification (URI); VID; Visual identification; Weighted
Type:
Dataset
Format:
text/tab-separated-values, 2804 data points
