Occurrence (%)
Taxon name Dataset region Minimum Average Maximum
Nitzschia gracilis Hantzsch ex Rabenhorst Northern Quebec (QUE) 0.20 1.23 8.20
Diatoma moniliformis Kützing Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 0.30 2.56 8.19
Tabellaria flocculosa (Roth) Kützing Taimyr Peninsula, Russia (TAI) 0.28 2.02 8.18
Fragilaria nanana Lange-Bertalot Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 0.30 1.43 8.17
Cyclotella stelligera (Cleve et Grunow) Van Heurck Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 0.32 2.15 8.09
Cymbella gaeumannii Meister Abisko, Sweden (ABK) 0.23 2.02 8.08
Navicula schassmannii Hustedt 1937 Northern Sweden (SWE) 0.17 1.37 8.08
Fragilaria cf. pinnata (fine) LEN TAI Lena River, Russia (LEN) 0.93 3.62 8.07
Fallacia losevae Alert, Queen Elizabeth Islands, Canadian Arctic Archipelago (ALERT) 0.36 2.09 8.05
Cyclotella krammeri Håkansson Northern Sweden (SWE) 0.57 3.69 8.04
Achnanthes minutissima Kützing Northern Quebec (QUE) 0.20 3.01 8.00
Diatoma monoliformis Bylot Island, Nunavut, Canada. (BYL) 0.11 2.46 8.00
Gomphonema lapponicum Bylot Island, Nunavut, Canada. (BYL) 0.25 2.07 8.00
Nitzschia fonticola Grunow Labrador, Canada (LAB) 0.20 2.69 8.00
Achnanthes sp. YEL Yellowknife area, Northwest Territories, Canada (YEL) 0.29 2.02 7.99
Nitzschia perminuta (Grunow) Peragallo Lena River, Russia (LEN) 0.60 2.48 7.99
Fragilaria pseudoconstruens Marciniak Southampton Island, Nunavut, Canada (SI) 0.39 4.14 7.89
Navicula hoefleri Cholnoky in Cholnoky et Schindler 1953 Abisko, Sweden (ABK) 0.24 1.85 7.88
Navicula minuscula Grunow Pechora River, Russia (PEC) 0.57 2.25 7.87
Aulacoseira subarctica (Müller) Haworth Lena River, Russia (LEN) 0.30 2.05 7.86
Cymbopleura lapponica Alert, Queen Elizabeth Islands, Canadian Arctic Archipelago (ALERT) 0.19 1.62 7.86
Nitzschia fonticola Grunow Yellowknife area, Northwest Territories, Canada (YEL) 1.13 2.96 7.85
Cymbella silesiaca Bleisch Abisko, Sweden (ABK) 0.20 1.03 7.84
Caloneis fasciata Group 1 DERMOT Alert, Queen Elizabeth Islands, Canadian Arctic Archipelago (ALERT) 0.29 1.76 7.83
Aulacoseira sp. 2 Québec EMILIE Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 0.30 1.61 7.79
Cocconeis placentula var. lineata (Ehrenberg) Van Heurck Lena River, Russia (LEN) 7.79 7.79 7.79
Diadesmis ingeaeformis Isachsen, Ellef Ringnes Island, Canadian High Arctic (ISACH) 1.44 4.62 7.79
Navicula vitiosa Schimanski Yellowknife area, Northwest Territories, Canada (YEL) 0.27 2.18 7.77
Cymbella descripta (Hustedt) Krammer et Lange-Bertalot Abisko, Sweden (ABK) 0.21 1.72 7.73
Caloneis fasciata Group 2 DERMOT Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 0.32 2.56 7.62
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