Occurrence (%)
Taxon name Dataset region Minimum Average Maximum
Tabellaria flocculosa (Roth) Kützing Southampton Island, Nunavut, Canada (SI) 0.17 7.81 29.69
Cocconeis placentula var. lineata (Ehrenberg) Van Heurck Lena River, Russia (LEN) 7.79 7.79 7.79
Fragilaria virescens Ralfs Abisko, Sweden (ABK) 0.20 7.79 22.93
Fragilaria fasciculata (Agardh) Lange-Bertalot Southampton Island, Nunavut, Canada (SI) 0.82 7.73 14.65
Hygropetra balfouriana Grunow ex Cleve Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 0.19 7.63 58.95
Diploneis oculata (Brébisson) Cleve Alert, Queen Elizabeth Islands, Canadian Arctic Archipelago (ALERT) 0.40 7.62 37.64
Pinnularia balfouriana Grunow ex Cleve Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 0.20 7.56 18.12
Stephanodiscus alpinus Hustedt Pechora River, Russia (PEC) 7.51 7.51 7.51
Eunotia praerupta Ehrenberg Bylot Island, Nunavut, Canada. (BYL) 1.10 7.49 13.00
Rossithidium petersenii Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 0.44 7.48 50.69
Achnanthes suchlandtii Hustedt Bylot Island, Nunavut, Canada. (BYL) 3.45 7.41 8.76
Fragilaria construens var. subrotunda Bylot Island, Nunavut, Canada. (BYL) 4.37 7.30 9.50
Fragilaria pinnata Ehrenberg Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 0.31 7.30 35.20
Cavinula pseudoscutiformis (Grunow ex Schmidt) Mann et Stickle Isachsen, Ellef Ringnes Island, Canadian High Arctic (ISACH) 0.33 7.29 19.89
Navicula gregaria Donkin Isachsen, Ellef Ringnes Island, Canadian High Arctic (ISACH) 5.13 7.24 9.35
Fragilaria pinnata Ehrenberg Northern Sweden (SWE) 0.19 7.18 30.35
Aulacoseira perglabra var. florinae (Camburn) Haworth 1990 Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 0.30 7.17 35.64
Navicula soehrensis var. hassiaca (Krasske) Lange-Bertalot Pechora River, Russia (PEC) 7.14 7.14 7.14
Frustulia rhomboides var. saxonica (Rabenhorst) deToni Northern Sweden (SWE) 0.18 7.13 23.33
Stephanodiscus hantzschii Grunow Yukon and Tuktoyaktuk Peninsula, Northwest Territories, Canada (YUK) 0.66 7.09 16.50
Cyclotella stelligera (Cleve et Grunow) Van Heurck Labrador, Canada (LAB) 0.20 7.07 47.00
Nitzschia alpina Hustedt Isachsen, Ellef Ringnes Island, Canadian High Arctic (ISACH) 0.38 7.05 23.19
Cyclotella bodanica var. lemanica (O. Müller ex Schroter) Bachmann 1903 Yukon and Tuktoyaktuk Peninsula, Northwest Territories, Canada (YUK) 0.33 6.66 23.10
Pseudostaurosira brevistriata (Grunow) Williams et Round Alert, Queen Elizabeth Islands, Canadian Arctic Archipelago (ALERT) 6.64 6.64 6.64
Aulacoseira subarctica IR DIAT_UME morphotype II Gulspettvatn 1989 Northern Sweden (SWE) 0.47 6.58 46.46
Navicula capitata Ehrenberg Taimyr Peninsula, Russia (TAI) 4.27 6.56 8.86
Achnanthes marginulata Grunow Pechora River, Russia (PEC) 6.55 6.55 6.55
Navicula sp. 1 DERMOT Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 2.29 6.51 10.73
Fragilaria pseudoconstruens Marciniak Bylot Island, Nunavut, Canada. (BYL) 4.65 6.49 8.65
Achnanthes cf. minutissima [minutissima agg.] DIAT_UME Kützing Northern Sweden (SWE) 0.17 6.32 28.63
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