Downward flux of phytoplankton cells on the West Greenland continental shelf, July 2021

Study Extent

At three stations on the West Greenland continental shelf, a bottom-moored short-term sediment trap array.

Sampling

Gimballed frames with 2-4 transparent plexiglass sediment trap cylinders were attached to the sediment trap array at 5 sampling depths (20, 30, 50, 90, and 120 m). The trap cylinders (KC Denmark, inner diameter 72 mm) were not prefilled with filtered sea water. After recovery of the sediment trap array, the water from the trap cylinders deployed at the same sampling depth was transferred in one carboy. From this carboy, a subsample of 100 mL was taken and preserved with 2 mL of acidic Lugol solution. The sample was stored cool (+4 C) and in darkness until further analysis ashore.

Method steps

1. The microscopic analysis was later conducted at the Institute of Oceanology of the Polish Academy of Sciences (IO PAN) in Sopot, Poland and the phytoplankton taxa were identified to the lowest possible taxonomic level.

N/A

1. Oligotrichida
   rank: order
2. Chrysochromulinaceae
   rank: family
3. Suessiaceae
   rank: family
4. Gymnodiniaceae
   rank: family
5. Pyramimonadaceae
   rank: family
6. Oligohymenophorea
   rank: class
7. Dinophyceae
   rank: class
8. Codonosigaceae
   rank: family
9. Chromista
   rank: kingdom
10. Gonyaulacales
    rank: order
11. Chromulinales
    rank: order
12. Rhizosoleniales
    rank: order
13. Bacillariales
    rank: order
14. Plantae
    rank: kingdom
15. Haptophyta
    rank: phylum
16. Chrysophyceae
    rank: class
17. Cryptophyceae
    rank: class
18. Thalassiosiraceae
    rank: family
19. NA
    rank: kingdom
20. Gymnodiniales
    rank: order
21. Pyramimonadophyceae
    rank: class
22. Protozoa
    rank: kingdom
23. Pyramimonadales
    rank: order
24. Coscinodiscales
    rank: order
25. Coscinodiscaceae
    rank: family
26. Ascampbelliellidae
    rank: family
27. NA
    rank: order
28. Gymnodiniales incertae sedis
    rank: family
29. Litostomatea
    rank: class
30. Suessiales
    rank: order
31. Chaetocerotanae incertae sedis
    rank: order
32. Prymnesiales
    rank: order
33. Rhizosoleniaceae
    rank: family
34. Choanoflagellatea
    rank: class
35. Thalassiosirales
    rank: order
36. Cladopyxidaceae
    rank: family
37. Telonemea
    rank: class
38. Coccolithophyceae
    rank: class
39. Oligotrichea
    rank: class
40. Mesodiniidae
    rank: family
41. Peridiniales
    rank: order
42. Cyclotrichiida
    rank: order
43. Myzozoa
    rank: phylum
44. Protoperidiniaceae
    rank: family
45. Chlorophyta
    rank: phylum
46. Bacillariophyta
    rank: phylum
47. Amphidiniales
    rank: order
48. Bacillariophyceae
    rank: class
49. Telonemida
    rank: order
50. Cryptophyta
    rank: phylum
51. Ochrophyta
    rank: phylum
52. NA
    rank: class
53. Choanozoa
    rank: phylum
54. Strombidiidae
    rank: family
55. Craspedida
    rank: order
56. Amphidiniaceae
    rank: family
57. Dinobryaceae
    rank: family
58. Chaetocerotaceae
    rank: family
59. NA
    rank: family
60. Ciliophora
    rank: phylum
61. Bacillariaceae
    rank: family
62. NA
    rank: phylum
63. Choreotrichida
    rank: order

Short-term sediment traps were deployed at 3 stations on the West Greenland continental shelf/ Davis Strait