Occurrence (%)
Taxon name Dataset region Minimum Average Maximum
Navicula difficillima Hustedt Northern Quebec (QUE) 0.20 1.16 4.00
Navicula digitulus Hustedt Labrador, Canada (LAB) 0.20 1.18 4.00
Navicula indifferens Hustedt Northern Quebec (QUE) 0.20 1.37 4.00
Navicula kuelbsii Lange-Bertalot Northern Quebec (QUE) 0.20 1.17 4.00
Neidium affine var. longiceps (Gregory) Cleve Northern Quebec (QUE) 0.20 0.94 4.00
Nitzschia palea (Kützing) Smith Northern Quebec (QUE) 0.20 1.11 4.00
Stauroneis anceps Ehrenberg Bylot Island, Nunavut, Canada. (BYL) 0.39 1.41 4.00
Cymbella minuta Hilse ex Rabenhorst Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 0.20 0.91 3.99
Nitzschia denticula Grunow Yukon and Tuktoyaktuk Peninsula, Northwest Territories, Canada (YUK) 0.33 1.10 3.97
Navicula agrestis Hustedt Taimyr Peninsula, Russia (TAI) 0.27 0.83 3.96
Neidium ampliatum (Ehrenberg) Krammer Abisko, Sweden (ABK) 0.23 0.81 3.96
Achnanthes marginulata Grunow Abisko, Sweden (ABK) 0.23 1.01 3.95
Amphora copulata (Kützing) Schoeman et Archibald Alert, Queen Elizabeth Islands, Canadian Arctic Archipelago (ALERT) 0.18 1.19 3.95
Cymbella microcephala Grunow Abisko, Sweden (ABK) 0.22 0.97 3.94
Fragilaria brevistriata var. papillosa Cleve-Euler Yellowknife area, Northwest Territories, Canada (YEL) 0.29 1.82 3.94
Diatoma tenue var. elongatum Yukon and Tuktoyaktuk Peninsula, Northwest Territories, Canada (YUK) 0.32 0.82 3.93
Nitzschia dissipata var. media (Hantzsch) Grunow Alert, Queen Elizabeth Islands, Canadian Arctic Archipelago (ALERT) 0.19 1.12 3.93
Psammothidium ventrale Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 0.31 1.27 3.93
Navicula spp. DIAT_UME Northern Sweden (SWE) 0.17 1.10 3.90
Neidium bergii Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 3.90 3.90 3.90
Amphora fogediana Krammer Yukon and Tuktoyaktuk Peninsula, Northwest Territories, Canada (YUK) 0.33 1.11 3.89
Navicula gregaria Donkin Alert, Queen Elizabeth Islands, Canadian Arctic Archipelago (ALERT) 0.38 1.26 3.89
Achnanthes levanderi Hustedt Yellowknife area, Northwest Territories, Canada (YEL) 0.25 1.73 3.88
Navicula bremensis Hustedt Northern Sweden (SWE) 0.17 0.93 3.87
Tabellaria ventricosa Kützing Taimyr Peninsula, Russia (TAI) 2.37 3.12 3.87
Achnanthes flexella var. alpestris Brun Abisko, Sweden (ABK) 3.85 3.85 3.85
Cymbella incerta (Grunow) Cleve Northern Sweden (SWE) 0.16 0.88 3.85
Navicula minima Grunow Northern Sweden (SWE) 0.17 1.18 3.84
Anomoeoneis brachysira (Brébisson) Grunow Pechora River, Russia (PEC) 0.30 2.06 3.83
Frustulia rhomboides (Ehrenberg) De Toni Pechora River, Russia (PEC) 0.60 1.96 3.83
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