Occurrence (%)
Taxon name Dataset region Minimum Average Maximum
Achnanthes marginulata Grunow Southampton Island, Nunavut, Canada (SI) 0.58 4.14 6.56
Fragilaria construens var. venter (Ehrenberg) Grunow Abisko, Sweden (ABK) 0.23 4.14 36.11
Fragilaria pseudoconstruens Marciniak Southampton Island, Nunavut, Canada (SI) 0.39 4.14 7.89
Brachysira vitrea (Grunow) Ross Northern Sweden (SWE) 0.18 4.13 24.71
Encyonema fogedii Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 0.44 4.11 14.18
Diploneis modica Hustedt Lena River, Russia (LEN) 4.10 4.10 4.10
Navicula agrestis Hustedt Labrador, Canada (LAB) 0.80 4.10 9.90
Navicula sp. 2 DERMOT Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 0.38 4.09 16.45
Aulacoseira perglabra var. florinae (Camburn) Haworth 1990 Northern Quebec (QUE) 0.20 4.07 18.40
Fragilaria pseudoconstruens Marciniak Labrador, Canada (LAB) 0.20 4.06 15.20
Eunotia mensturi Pechora River, Russia (PEC) 2.32 4.04 5.75
Fragilaria construens var. venter (Ehrenberg) Grunow Northern Quebec (QUE) 0.20 4.01 25.80
Fragilaria pseudoconstruens Marciniak Northern Quebec (QUE) 0.20 4.01 14.20
Achnanthes curtissima Carter Northern Sweden (SWE) 0.18 3.98 18.21
Cyclotella comensis Grunow et Van Heurck 1882 Abisko, Sweden (ABK) 0.21 3.94 16.87
Amphora pediculus (Kützing) Grunow Yukon and Tuktoyaktuk Peninsula, Northwest Territories, Canada (YUK) 0.33 3.92 18.87
Navicula obsoleta Hustedt Abisko, Sweden (ABK) 0.25 3.91 9.83
Aulacoseira distans var. tenella (Nygaard) Ross Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 0.32 3.90 12.09
Fragilaria brevistriata Grunow Yukon and Tuktoyaktuk Peninsula, Northwest Territories, Canada (YUK) 0.33 3.90 19.80
Neidium bergii Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 3.90 3.90 3.90
Cyclotella delicatissima Yukon and Tuktoyaktuk Peninsula, Northwest Territories, Canada (YUK) 0.66 3.89 17.55
Cyclotella pseudostelligera Hustedt Northern Quebec (QUE) 0.20 3.89 26.00
Achnanthes flexella var. alpestris Brun Abisko, Sweden (ABK) 3.85 3.85 3.85
Fragilaria pinnata Ehrenberg Labrador, Canada (LAB) 0.20 3.84 17.90
Navicula vitiosa Schimanski Pechora River, Russia (PEC) 0.32 3.84 15.34
Cavinula pseudoscutiformis (Grunow ex Schmidt) Mann et Stickle Bylot Island, Nunavut, Canada. (BYL) 0.20 3.83 17.00
Anomoeoneis vitrea (Grunow) Ross Yellowknife area, Northwest Territories, Canada (YEL) 0.28 3.75 23.77
Aulacoseira lirata var. lacustris (Grunow) Ross Abisko, Sweden (ABK) 1.49 3.75 8.33
Navicula bjoernoeyaensis Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 3.75 3.75 3.75
Eunotia exigua var. tridentula Østrup Pechora River, Russia (PEC) 3.74 3.74 3.74
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