Nematoda diversity and functional feeding groups on the Northeast Greenland (NEG) shelf during POLARSTERN cruise PS109

• Main Authors: Da Costa Monteiro, Luana, Lins, Lidia, Braeckman, Ulrike
• Format: Dataset
• Language: English
• Published: PANGAEA 2024
• Subjects: ARK-XXXI/4; Comment; Counted; Date/Time of event; Depth; bottom/max; sediment/rock; top/min; Event label; Feeding type; Feeding type quantification according to Wieser (1953); feeding types; FRAM; FRontiers in Arctic marine Monitoring; Genus; unique identification; unique identification (Semantic URI); unique identification (URI); glacier; interstitial; Latitude of event; Longitude of event; Multicorer with television; Nematoda; NEW Polynya; Northeast Water Polynya; Number; outflow shelf; Polarstern; Principal investigator; PS109; PS109_115-2; PS109_122-1; PS109_125-3; PS109_139-2; PS109_19-4; PS109_36-2; PS109_45-4; PS109_76-2; PS109_84-2; PS109_85-1; PS109_93-2; Replicate; sediment; Sex; Arctic; Greenland
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.959351; https://doi.org/10.1594/PANGAEA.959351

Between September and October 2017, MUC cores were deployed at various locations across the Northeast Greenland (NEG) shelf with R/V Polarstern during PS109. Samples for meiofauna were collected with a cut-off 10 ml syringe (area 1.89 m²) that was inserted to 5 cm depth sediment depth in the MUC core, and subsequently sliced in 5 horizons of 1 cm. Afterwards, meiofauna were extracted from the samples by triple density centrifugation with the colloidal silica polymer LUDOX TM 40 (Heip et al., 1985) and rinsed with freshwater on stacked 1 mm and 32 µm mesh sieves. The fraction retained on the 32 µm mesh sieve was preserved in 4 % Li2CO3-buffered formalin and stained with Rose Bengal. Nematodes of each sample were handpicked with a fine needle, transferred to glycerine (De Grisse I, II and III) (Seinhorst, 1959) , mounted on glass slides, identified to genus level and allocated to functional feeding groups based on Wieser, 1953 (as selective deposit feeders - 1A, non-selective deposit feeders - 1B, epistratum feeders - 2A and predators/scavengers - 2B).