Occurrence (%)
Taxon name Dataset region Minimum Average Maximum
Cymbella sp. 1 DERMOT Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 1.49 1.69 1.89
Encyonopsis descripta (Hustedt) Krammer Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 0.20 0.70 1.89
Navicula absoluta Hustedt Pechora River, Russia (PEC) 0.26 0.81 1.89
Navicula schmassmannii Hustedt 1943 Taimyr Peninsula, Russia (TAI) 0.30 0.76 1.89
Neidium affine var. longiceps (Gregory) Cleve Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 0.20 0.49 1.89
Nitzschia frustulum (Kützing) Grunow Lena River, Russia (LEN) 0.61 0.93 1.89
Nitzschia tubicola Grunow ex Cleve et Grunow Lena River, Russia (LEN) 0.31 1.27 1.89
Achnanthes sp. impexiformis/impexa CDD_FM Taimyr Peninsula, Russia (TAI) 0.29 0.85 1.88
Diploneis cf. modica TAI CDD Taimyr Peninsula, Russia (TAI) 0.30 0.84 1.88
Neidium bergii Isachsen, Ellef Ringnes Island, Canadian High Arctic (ISACH) 0.32 0.71 1.88
Achnanthes conspicua Mayer Northern Sweden (SWE) 0.36 1.11 1.87
Amphora ovalis (Kützing) Kützing Northern Sweden (SWE) 0.24 0.81 1.87
Fragilaria oldenburgiana Hustedt Abisko, Sweden (ABK) 0.24 1.05 1.87
Navicula laevissima Kützing Lena River, Russia (LEN) 0.31 0.84 1.86
Cymbella minuta Hilse ex Rabenhorst Lena River, Russia (LEN) 0.29 1.08 1.85
Navicula tripunctata var. arctica Lena River, Russia (LEN) 1.85 1.85 1.85
Nitzschia paleacea Grunow ex Van Heurck Lena River, Russia (LEN) 0.58 1.08 1.84
Cymbella gracilis (Ehrenberg) Kützing Lena River, Russia (LEN) 0.61 0.92 1.83
Fragilaria cf. pinnata (coarse) YUK YEL TAI PEC Taimyr Peninsula, Russia (TAI) 0.63 1.23 1.83
Stauroneis phoenicenteron (Nitzsch) Ehrenberg Taimyr Peninsula, Russia (TAI) 0.30 0.78 1.83
Tabellaria sp. ABISKO Abisko, Sweden (ABK) 0.24 1.03 1.83
Achnanthes oblongella Østrup Northern Sweden (SWE) 0.18 0.53 1.82
Cymbopleura amphicephala Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 0.31 0.75 1.82
Navicula suchlandtii Hustedt Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 1.82 1.82 1.82
Achnanthes carissima Lange-Bertalot Northern Quebec (QUE) 0.20 0.75 1.80
Achnanthes sp. 1 QUEBEC CDD_FM Labrador, Canada (LAB) 0.20 0.62 1.80
Aulacoseira distans var. humilis (A. Cleve-Euler) R. Ross in Hartley 1986 Labrador, Canada (LAB) 0.20 1.20 1.80
Caloneis branderii (Hustedt) Krammer Northern Quebec (QUE) 0.20 0.76 1.80
Cymbella cf. aequalis CDD_FM W. Smith in Greville 1855 Labrador, Canada (LAB) 0.20 0.73 1.80
Cymbella lapponica Grunow Labrador, Canada (LAB) 0.20 0.54 1.80
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