Downward flux of phytoplankton cells in East Greenland fjords, August 2022

Study Extent

At each of the seven stations with a sediment trap deployment in East Greenland (1 station in Dove Bay, 3 stations in Kong Oscar Fjord, 3 stations in Arden Caple fjord), a bottom-moored short-term sediment trap array was deployed.

Sampling

Gimballed frames with 2-4 transparent plexiglass sediment trap cylinders were attached to the sediment trap array at 6 to 8 sampling depths. The trap cylinders were pre-filled with filtered sea water and a salinity of approximate 40 psu before deployment. 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, and 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. Monogenea
   rank: class
4. Gymnodiniaceae
   rank: family
5. Pyramimonadaceae
   rank: family
6. Dinophyceae
   rank: class
7. Naviculales
   rank: order
8. Chromista
   rank: kingdom
9. Gonyaulacales
   rank: order
10. Entomoneidaceae
    rank: family
11. Chromulinales
    rank: order
12. Prorocentrales
    rank: order
13. Bacillariales
    rank: order
14. Haptophyta
    rank: phylum
15. Plantae
    rank: kingdom
16. Animalia
    rank: kingdom
17. Naviculaceae
    rank: family
18. Chlamydomonadales
    rank: order
19. Chrysophyceae
    rank: class
20. Cryptophyceae
    rank: class
21. Gymnodiniales
    rank: order
22. Pyramimonadophyceae
    rank: class
23. Protozoa
    rank: kingdom
24. Codonellidae
    rank: family
25. Pyramimonadales
    rank: order
26. Chlorophyceae
    rank: class
27. Ascampbelliellidae
    rank: family
28. NA
    rank: order
29. Gymnodiniales incertae sedis
    rank: family
30. Capsalidea
    rank: order
31. Litostomatea
    rank: class
32. Prorocentraceae
    rank: family
33. Prymnesiales
    rank: order
34. Pleurosigmataceae
    rank: family
35. Platyhelminthes
    rank: phylum
36. Cladopyxidaceae
    rank: family
37. Coccolithophyceae
    rank: class
38. Mesodiniidae
    rank: family
39. Oligotrichea
    rank: class
40. Peridiniales
    rank: order
41. Cyclotrichiida
    rank: order
42. Pennales
    rank: order
43. Surirellales
    rank: order
44. Myzozoa
    rank: phylum
45. Protoperidiniaceae
    rank: family
46. Chlamydomonadaceae
    rank: family
47. Geminigeraceae
    rank: family
48. Capsalidae
    rank: family
49. Chlorophyta
    rank: phylum
50. Bacillariophyta
    rank: phylum
51. Pyrenomonadales
    rank: order
52. Bacillariophyceae
    rank: class
53. Ochrophyta
    rank: phylum
54. Cryptophyta
    rank: phylum
55. NA
    rank: class
56. Strombidiidae
    rank: family
57. Dinobryaceae
    rank: family
58. NA
    rank: family
59. Ciliophora
    rank: phylum
60. Bacillariaceae
    rank: family
61. NA
    rank: phylum
62. Choreotrichida
    rank: order

Short-term sediment traps were deployed at 7 stations in three different fjords in East Greenland