Sea-ice associated fauna biodiversity sampled by divers under the ice from the Nansen Legacy cruise Q2 (cruise number: 2021704)

Study Extent

The data was collected during the Nansen Legacy seasonal study (Q2, cruise number: 2021704) from 27.04 - 20.05.2021 onboard the research vessel RV Kronprins Haakon, along a transect in the northern Barents Sea from 76N to 82N. Divers were taking slurpgun samples under the ice.

Sampling

Slurp gun, a modified 3.5L Trident® suction gun used to take samples from the ice-water interface under sea ice. The front nozzle of an improved gun is oblique so that it is possible to fill the gun while moving it along the undersurface of the sea ice. The surface area sampled is 5×54 cm for a full slurp gun, or shorter distance measured along a floating metre stick. Distance sampled is used to transform cells per volume in the sample to cells per area.

Method steps

1. The dataset contains abundance and biomass of sea-ice and under-ice fauna (> 20 µm) including large protists such as foraminifers and ciliates and metazoans eggs sampled by divers with qualitative slurpguns. Sea-ice fauna were identified and counted with stereo microscopy and results are given as count numbers.

N/A

1. Rotaliida
   rank: order
2. Arthropoda
   rank: phylum
3. Litostomatea
   rank: class
4. Synchaetidae
   rank: family
5. Calanidae
   rank: family
6. Amphipoda
   rank: order
7. Calanoida
   rank: order
8. Globorotaliidae
   rank: family
9. Chromista
   rank: kingdom
10. Copepoda
    rank: class
11. Oithonidae
    rank: family
12. Eurotatoria
    rank: class
13. Rotifera
    rank: phylum
14. Spionida
    rank: order
15. Globothalamea
    rank: class
16. Harpacticoida
    rank: order
17. Ploima
    rank: order
18. Animalia
    rank: kingdom
19. Spionidae
    rank: family
20. Tisbidae
    rank: family
21. Didiniidae
    rank: family
22. Eusiridae
    rank: family
23. Haptorida
    rank: order
24. Foraminifera
    rank: phylum
25. Annelida
    rank: phylum
26. Polychaeta
    rank: class
27. Cyclopoida
    rank: order
28. Malacostraca
    rank: class
29. Ciliophora
    rank: phylum

The data was collected during the Nansen Legacy seasonal study (Q2, cruise number: 2021704) from 27.04 - 20.05.2021 onboard the research vessel RV Kronprins Haakon, along a transect in the northern Barents Sea from 76N to 82N. The dataset contains abundance and biomass of sea-ice and under-ice fauna (> 20 µm) including large protists such as foraminifers and ciliates and metazoans eggs sampled by divers with qualitative slurpguns. Sea-ice fauna were identified and counted with stereo microscopy and results are given as count numbers.