Occurrence (%)
Taxon name Dataset region Minimum Average Maximum
Fragilaria elliptica Schumann Abisko, Sweden (ABK) 0.23 2.68 9.55
Navicula cincta (Ehrenberg) Ralfs Isachsen, Ellef Ringnes Island, Canadian High Arctic (ISACH) 0.32 2.99 9.51
Achnanthes minutissima Kützing Labrador, Canada (LAB) 0.20 3.22 9.50
Fragilaria construens var. subrotunda Bylot Island, Nunavut, Canada. (BYL) 4.37 7.30 9.50
Nitzschia alpina Hustedt Bylot Island, Nunavut, Canada. (BYL) 0.32 3.39 9.46
Adlafia bryophila (Petersen) Lange-Bertalot Alert, Queen Elizabeth Islands, Canadian Arctic Archipelago (ALERT) 0.36 2.79 9.43
Pinnularia obscura Krasske Isachsen, Ellef Ringnes Island, Canadian High Arctic (ISACH) 0.31 1.56 9.39
Navicula gregaria Donkin Isachsen, Ellef Ringnes Island, Canadian High Arctic (ISACH) 5.13 7.24 9.35
Navicula variostriata Krasske Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 0.32 0.97 9.35
Semiorbis hemicyclus (Ehrenberg) Patrick in Patrick et Reimer 1966 Northern Sweden (SWE) 0.58 4.97 9.35
Aulacoseira perglabra (Østrup) Haworth Labrador, Canada (LAB) 0.20 2.13 9.30
Navicula seminuloides Hustedt Yellowknife area, Northwest Territories, Canada (YEL) 0.29 3.26 9.30
Frustulia cf. crassinervia DERMOT Mould Bay, Prince Patrick Island, Canadian Arctic Archipelago (MB) 9.29 9.29 9.29
Tabellaria flocculosa var. flocculosa (Roth) Kützing 1844 Abisko, Sweden (ABK) 0.21 1.16 9.22
Cyclotella atomus Hustedt Yukon and Tuktoyaktuk Peninsula, Northwest Territories, Canada (YUK) 0.33 2.29 9.21
Fragilaria pseudoconstruens Marciniak Northern Sweden (SWE) 0.19 2.97 9.21
Achnanthes subatomoides (Hustedt) Lange-Bertalot et Archibald Pechora River, Russia (PEC) 0.65 3.63 9.20
Brachysira brebissonii Ross Northern Quebec (QUE) 0.20 1.32 9.20
Frustulia rhomboides (Ehrenberg) De Toni Labrador, Canada (LAB) 0.20 1.12 9.20
Navicula subtilissima Cleve Yellowknife area, Northwest Territories, Canada (YEL) 0.27 1.84 9.07
Nitzschia dissipata var. media (Hantzsch) Grunow Isachsen, Ellef Ringnes Island, Canadian High Arctic (ISACH) 0.18 2.12 9.02
Pinnularia interrupta Smith Taimyr Peninsula, Russia (TAI) 0.59 2.01 9.02
Cyclostephanos dubius (Frick) Round Pechora River, Russia (PEC) 0.59 4.80 9.01
Fragilaria brevistriata Grunow Yellowknife area, Northwest Territories, Canada (YEL) 0.27 3.42 9.01
Brachysira neoexilis Lange-Bertalot Labrador, Canada (LAB) 0.20 1.37 9.00
Navicula seminulum Grunow Yukon and Tuktoyaktuk Peninsula, Northwest Territories, Canada (YUK) 0.33 2.10 9.00
Pinnularia abaujensis var. linearis (Hustedt) Patrick Northern Sweden (SWE) 0.31 2.01 8.98
Navicula laevissima Kützing Salluit, Kangiqsujuaq and Quaqtaq, Ungava Peninsula, Nunavik, Canada (SAL) 0.20 0.65 8.97
Cyclotella rossii DIAT_UME morphotype I Håkansson 1990 Northern Sweden (SWE) 0.18 2.41 8.96
Pinnularia abaujensis (Pantocsek) Ross Abisko, Sweden (ABK) 0.22 1.01 8.96
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