Diversity, ecology and biogeography of the freshwater diatom communities from Ulu Peninsula (James Ross Island, NE Antarctic Peninsula)

0393282 - BÚ 2014 RIV DE eng J - Článek v odborném periodiku
Kopalová, Kateřina - Nedbalová, Linda - Nývlt, D. - Elster, Josef - Van de Vijver, B.
Diversity, ecology and biogeography of the freshwater diatom communities from Ulu Peninsula (James Ross Island, NE Antarctic Peninsula).
Polar Biology. Roč. 36, č. 7 (2013), s. 933-948. ISSN 0722-4060. E-ISSN 1432-2056
Grant CEP: GA MŠMT ME 934; GA MŠMT ME 945
Institucionální podpora: RVO:67985939
Klíčová slova: diatoms * lakes * seepages
Kód oboru RIV: EH - Ekologie - společenstva
Impakt faktor: 2.071, rok: 2013

The diversity, ecology and biogeography of diatoms in lakes, seepage areas and streams on the Ulu Peninsula, a large ice-free area in the northern part of James Ross Island (Weddell Sea), were studied. A diverse diatom flora of 123 taxa was observed, dominated by several Nitzschia taxa, Psammothidium papilio, Eolimna jamesrossensis, Fragilaria capucina and Fistulifera saprophila. The results from the similarity and diversity analysis suggest James Ross Island to be biogeographically positioned within the Maritime Antarctic region, yet with some affinities with the flora of Continental Antarctica, as shown by the presence of Luticola gaussii and Achnanthes taylorensis. Based on our data, James Ross Island can thus be located close to the boundary of the two main Antarctic biogeographical regions. Diatom communities present in streams and seepage areas could be clearly distinguished from those in lakes, the latter being much more species rich.
Trvalý link: http://hdl.handle.net/11104/0223316