Occurrence (%)
Taxon name Dataset region Minimum Average Maximum
Amphora copulata (Kützing) Schoeman et Archibald Bylot Island, Nunavut, Canada. (BYL) 0.29 2.78 6.32
Navicula indifferens Hustedt Abisko, Sweden (ABK) 0.24 1.53 6.32
Cymbella hebridica Grunow ex Cleve Labrador, Canada (LAB) 0.20 1.04 6.30
Cymbella lunata Smith Northern Sweden (SWE) 0.15 1.64 6.29
Denticula tenuis Kützing Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 0.30 1.88 6.29
Nitzschia palea (Kützing) Smith Abisko, Sweden (ABK) 0.21 1.03 6.28
Fragilaria construens (Ehrenberg) Grunow 1862 Yukon and Tuktoyaktuk Peninsula, Northwest Territories, Canada (YUK) 0.35 2.67 6.25
Achnanthes clevei Grunow Yellowknife area, Northwest Territories, Canada (YEL) 6.20 6.20 6.20
Navicula seminulum Grunow Northern Quebec (QUE) 0.20 1.42 6.20
Nitzschia valdestriata Aleem et Hustedt Northern Quebec (QUE) 0.20 1.49 6.20
Caloneis cf. silicula DERMOT Alert, Queen Elizabeth Islands, Canadian Arctic Archipelago (ALERT) 0.36 2.10 6.19
Fragilaria capucina var. vaucheriae (Kützing) Lange-Bertalot Southampton Island, Nunavut, Canada (SI) 1.51 3.05 6.19
Stauroneis anceps Ehrenberg Yukon and Tuktoyaktuk Peninsula, Northwest Territories, Canada (YUK) 0.33 1.21 6.19
Fragilaria capucina var. vaucheriae (Kützing) Lange-Bertalot Pechora River, Russia (PEC) 0.28 1.70 6.18
Cyclotella rossii DIAT_UME morphotype II Håkansson 1990 Northern Sweden (SWE) 0.19 2.58 6.15
Achnanthes carissima Lange-Bertalot Yellowknife area, Northwest Territories, Canada (YEL) 0.29 1.16 6.12
Aulacoseira perglabra var. florinae (Camburn) Haworth 1990 Northern Sweden (SWE) 0.22 1.86 6.05
Navicula hassiaca Krasske Northern Sweden (SWE) 0.18 0.99 6.04
Achnanthes lanceolata (Brébisson ex Kützing) Grunow Yukon and Tuktoyaktuk Peninsula, Northwest Territories, Canada (YUK) 0.32 1.23 6.02
Chamaepinnularia grandupii Bylot Island, Nunavut, Canada. (BYL) 0.19 1.79 6.00
Tabellaria flocculosa (Roth) Kützing Bylot Island, Nunavut, Canada. (BYL) 0.10 1.16 6.00
Cymbopleura angustata var. spitsbergensis Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 0.16 2.41 5.95
Amphora spitzbergensis Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 0.37 2.37 5.94
Aulacoseira distans var. nivalis (Smith) Haworth Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 0.19 1.68 5.93
Achnanthes lanceolata (Brébisson ex Kützing) Grunow Yellowknife area, Northwest Territories, Canada (YEL) 0.28 3.10 5.92
Frustulia rhomboides var. saxonica (Rabenhorst) deToni Yellowknife area, Northwest Territories, Canada (YEL) 0.27 1.55 5.92
Encyonema lange-bertalotii Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 0.36 2.40 5.88
Stauroneis phoenicenteron (Nitzsch) Ehrenberg Abisko, Sweden (ABK) 0.20 0.82 5.88
Achnanthes suchlandtii Hustedt Abisko, Sweden (ABK) 0.23 0.92 5.87
Amphora inariensis Krammer Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 0.32 2.09 5.83
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