TY - JOUR N2 - Diatom communities sampled in the vicinity of the Polish Antarctic Arctowski Station (King George Island, South Shetland Islands) have been investigated. Soil and sediment samples were collected from Petrified Forest Creek and Ornithologist Creek valleys. A total of 98 diatom taxa belonging to 30 different genera were recorded in the counts. Nine taxa have a marine origin but all together constitute only 0.14% of all counted valves. Three species: Staurosira pottiezii, Psammothidium germainioides and Sellaphora jamesrossensis dominated the flora. Some differences in the diatom assemblages were observed between soil samples from two stream valleys and between soil and sediments from the same catchment area. The highest species diversity was recorded in samples from the dried-up bed of the Ornithologist Creek, where both freshwater and terrestrial species were found. The soil samples from both investigated valleys showed a comparable number of species, but a different species composition. Based on the PCA analysis a clear separation of the assemblages from both creeks could be observed. L1 - http://www.journals.pan.pl/Content/117822/PDF/2020-04-PPR-02-Noga-etal.pdf L2 - http://www.journals.pan.pl/Content/117822 PY - 2020 IS - No 4 EP - 314 DO - 10.24425/ppr.2020.134793 KW - Antarctic KW - South Shetland Islands KW - soil diatoms KW - sediments KW - diversity KW - Ornithologist Creek KW - Petrified Forest Creek A1 - Noga, Teresa A1 - Kochman-Kędziora, Natalia A1 - Olech, Maria A1 - Van de Vijver, Bart PB - Polish Academy of Sciences PB - Committee on Polar Research VL - vol. 41 DA - 2020.11.24 T1 - Limno-terrestrial diatom flora in two stream valleys near Arctowski Station, King George Island, Antarctica SP - 289 UR - http://www.journals.pan.pl/dlibra/publication/edition/117822 T2 - Polish Polar Research ER -