Occurrence (%)
Taxon name Dataset region Minimum Average Maximum
Navicula schmassmannii Hustedt 1943 Yellowknife area, Northwest Territories, Canada (YEL) 0.52 2.15 4.66
Achnanthes laterostrata Hustedt Lena River, Russia (LEN) 0.31 1.35 4.65
Navicula cf. subrotundata YUK-YEL CDD Yellowknife area, Northwest Territories, Canada (YEL) 0.30 1.88 4.65
Nitzschia pura Hustedt Pechora River, Russia (PEC) 0.55 1.35 4.65
Navicula soehrensis var. muscicola (Petersen) Krasske Northern Sweden (SWE) 4.64 4.64 4.64
Navicula vitiosa Schimanski Yukon and Tuktoyaktuk Peninsula, Northwest Territories, Canada (YUK) 0.33 1.62 4.64
Diatoma mesodon (Ehrenberg) Kützing Northern Sweden (SWE) 0.17 1.20 4.63
Navicula pseudoscutiformis Hustedt Lena River, Russia (LEN) 0.29 1.31 4.62
Synedra ulna (Nitzsch) Ehrenberg Yukon and Tuktoyaktuk Peninsula, Northwest Territories, Canada (YUK) 0.32 1.04 4.62
Nitzschia perminuta (Grunow) Peragallo Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 0.33 2.53 4.61
Achnanthes kuelbsii Lange-Bertalot Labrador, Canada (LAB) 0.20 1.41 4.60
Achnanthes suchlandtii Hustedt Southampton Island, Nunavut, Canada (SI) 0.20 2.27 4.60
Fragilaria constricta Ehrenberg Northern Quebec (QUE) 0.40 1.66 4.60
Navicula rotunda Hustedt Lena River, Russia (LEN) 0.31 1.63 4.60
Navicula sp. 3 QUEBEC CDD_FM Northern Quebec (QUE) 0.40 1.10 4.60
Navicula submuralis Hustedt Northern Quebec (QUE) 0.20 0.92 4.60
Achnanthes petersenii Hustedt 1936 Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 0.31 1.38 4.59
Pinnularia divergentissima (Grunow) Cleve Isachsen, Ellef Ringnes Island, Canadian High Arctic (ISACH) 0.35 1.94 4.58
Achnanthes austriaca var. helvetica Hustedt Northern Sweden (SWE) 0.17 0.92 4.57
Diatoma tenuis Agardh Bylot Island, Nunavut, Canada. (BYL) 0.11 2.15 4.53
Navicula schmassmannii Hustedt 1943 Lena River, Russia (LEN) 0.31 1.44 4.52
Nitzschia alpina Hustedt Yellowknife area, Northwest Territories, Canada (YEL) 0.28 0.98 4.52
Encyonema silesiacum (Bleisch) Mann Alert, Queen Elizabeth Islands, Canadian Arctic Archipelago (ALERT) 0.18 1.45 4.50
Navicula parasubtilissima Kobayasi et Nagumo Northern Quebec (QUE) 0.20 0.70 4.50
Navicula jonssonii Alert, Queen Elizabeth Islands, Canadian Arctic Archipelago (ALERT) 0.38 2.43 4.47
Pinnularia microstauron var. brebissonii (Kützing) Mayer Abisko, Sweden (ABK) 0.20 1.15 4.47
Achnanthes minutissima Kützing Pechora River, Russia (PEC) 0.28 1.30 4.46
Gomphonema cf. productum DERMOT Alert, Queen Elizabeth Islands, Canadian Arctic Archipelago (ALERT) 1.90 3.18 4.46
Fragilaria brevistriata Grunow Pechora River, Russia (PEC) 0.26 1.06 4.45
Cyclotella pseudostelligera Hustedt Southampton Island, Nunavut, Canada (SI) 0.20 2.21 4.44
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