Freshwater diatoms of the Ecology Glacier foreland, King George Island, South Shetland Islands

• Published in: Polish polar research Vol. 39; no. 3; p. 393
• Main Authors: Kochman-Kędziora, Natalia, Noga, Teresa, Olech, Maria, Van De Vijver, Bart
• Format: Journal Article
• Language: English
• Published: Warsaw Polish Academy of Sciences 01.01.2018
• Subjects: antarctic; Biology; Creeks & streams; Diatoms; Ecology; ecology glacier; Flora; Flowers & plants; Freshwater; freshwater assemblages; Freshwater ecology; Genera; Geographical distribution; Glaciers; Inland water environment; Islands; king george island; Marine microorganisms; Plankton; Plants; Taxa; Taxonomic revision
• DOI: 10.24425/118753
• ISSN: 0138-0338

Diatom assemblages from small pools and creeks on the Ecology Glacier forefield have been investigated. It is the first study in the Admiralty Bay region after the thorough taxonomic revision of the non-marine Antarctic diatom flora. A total of 122 diatom taxa, belonging to 35 genera were identified. More than 55% of all observed species have a restricted Antarctic distribution. Another 15% have a marine origin. Nitzschia gracilis Hantzsch, N. homburgiensis Lange-Bertalot and Planothidium rostrolanceolatum Van de Vijver et al. dominated the flora. Based on a DCA analysis, samples were subdivided in three groups reflecting ecological differences. Several samples (group 1) showed a mixed freshwater/marine diatom composition and are typical for coastal pools. Two other groups were separated based on the amount of limnoterrestrial taxa indicating the temporary character of some of the pools.