Occurrence (%)
Taxon name Dataset region Minimum Average Maximum
Psammothidium marginulatum (Grunow) Bukhtiyarova and Round Alert, Queen Elizabeth Islands, Canadian Arctic Archipelago (ALERT) 0.38 12.95 83.53
Fragilaria elliptica Schumann Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 0.32 10.40 80.26
Stephanodiscus minutulus (Kützing) Cleve et Möller Taimyr Peninsula, Russia (TAI) 0.95 39.23 77.51
Staurosirella pinnata (Ehrenberg) Williams et Round Bylot Island, Nunavut, Canada. (BYL) 0.10 40.30 74.34
Fragilaria pinnata Ehrenberg Lena River, Russia (LEN) 0.87 20.53 73.26
Fragilaria pinnata Ehrenberg Pechora River, Russia (PEC) 0.29 14.39 73.01
Cyclotella comensis Grunow et Van Heurck 1882 Northern Sweden (SWE) 0.22 30.33 71.11
Nitzschia perminuta (Grunow) Peragallo Isachsen, Ellef Ringnes Island, Canadian High Arctic (ISACH) 0.58 14.59 67.82
Fragilaria pinnata Ehrenberg Yukon and Tuktoyaktuk Peninsula, Northwest Territories, Canada (YUK) 0.33 29.70 66.77
Aulacoseira perglabra (Østrup) Haworth Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 0.30 4.41 66.67
Fragilaria pseudoconstruens Marciniak Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 0.32 7.95 65.68
Cyclotella stelligera (Cleve et Grunow) Van Heurck Taimyr Peninsula, Russia (TAI) 0.28 13.58 65.05
Fragilaria pinnata Ehrenberg Northern Quebec (QUE) 0.20 14.40 62.00
Hygropetra balfouriana Grunow ex Cleve Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 0.19 7.63 58.95
Chamaepinnularia gandrupii (Petersen) Lange-Bertalot et Krammer Isachsen, Ellef Ringnes Island, Canadian High Arctic (ISACH) 0.37 13.09 54.66
Cavinula jaernefeltii (Hustedt) D.G. Mann et A.J. Stickle 1990 Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 54.36 54.36 54.36
Fragilaria pinnata Ehrenberg Taimyr Peninsula, Russia (TAI) 1.52 23.53 52.42
Cyclotella stelligera (Cleve et Grunow) Van Heurck Yukon and Tuktoyaktuk Peninsula, Northwest Territories, Canada (YUK) 0.32 9.02 51.49
Rossithidium petersenii Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 0.44 7.48 50.69
Aulacoseira perglabra (Østrup) Haworth Abisko, Sweden (ABK) 0.23 5.75 50.12
Fragilaria construens var. venter (Ehrenberg) Grunow Taimyr Peninsula, Russia (TAI) 0.29 13.55 48.52
Fragilaria brevistriata Grunow Abisko, Sweden (ABK) 0.23 5.88 48.39
Caloneis cf. bacillum DERMOT Isachsen, Ellef Ringnes Island, Canadian High Arctic (ISACH) 0.29 6.01 47.67
Nitzschia clausii Hantzsch Isachsen, Ellef Ringnes Island, Canadian High Arctic (ISACH) 0.38 9.78 47.47
Cyclotella stelligera (Cleve et Grunow) Van Heurck Labrador, Canada (LAB) 0.20 7.07 47.00
Staurosirella pinnata (Ehrenberg) Williams et Round Southampton Island, Nunavut, Canada (SI) 0.19 21.66 46.72
Aulacoseira subarctica IR DIAT_UME morphotype II Gulspettvatn 1989 Northern Sweden (SWE) 0.47 6.58 46.46
Psammothidium marginulatum (Grunow) Bukhtiyarova and Round Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 0.70 14.86 45.80
Fragilaria virescens var. exigua Grunow Northern Quebec (QUE) 0.40 10.66 45.70
Cyclotella glomerata Bachmann Abisko, Sweden (ABK) 0.23 5.16 44.36
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