Revision of the genusNaviculas.s. (Bacillariophyceae) in inland waters of the Sub-Antarctic and Antarctic with the description of five new species

Benthic diatoms (Bacillariophyta) from seepages and streams on James Ross Island (NW Weddell Sea, Antarctica)

“…In contrast to previous (recent) studies stressing upon the cosmopolitan nature of the Antarctic flora (Toro et al 2007, Vinocur & Maidana 2010, a high degree of endemism has been demonstrated in the diatom flora on the different islands in the southern part of the Atlantic Ocean (e.g. Sabbe et al 2003, Van de Vijver et al 2005, Van de Vijver 2008, Van de Vijver & Mataloni 2008, Van de Vijver et al 2010a, 2011a, 2011b. The application of this more fine-grained taxonomy also resulted in a reconsideration of the diatom biogeography showing that the Antarctic diatom flora should be considered to be much more unique than previously accepted (Vyverman et al 2007(Vyverman et al , 2010.…”

“…The construction of the Czech research station in 2006 on the northern tip of James Ross Island, was the start of a renewed interest in the microbial biodiversity of this island including new primary research on the diatom flora in the northern part of the island. The results obtained so far contradict the previous statements on the cosmopolitan character of the composing diatom flora as a fairly large number of new taxa was recently described (Esposito et al 2008, Zidarova et al 2009, Van de Vijver et al 2010a, 2011a, 2011b. Moreover, a recent analysis of the seepage and stream diatom flora from James Ross Island indicated that the previously published literature on the James Ross Island diatoms contained a large number of misidentifications and inconsistencies, making a thorough and detailed taxonomic analysis of the limnoterrestrial diatoms necessary.…”

The genus Stauroneis (Bacillariophyta) from the South Shetland Islands and James Ross Island (Antarctica).

“…Moreover, based on the diatom species diversity, a clear biogeographical separation could be determined between the different parts of the Antarctic Region as defined by Chown & Convey (2007): Sub-Antarctica (comprising the islands in the southern Indian Ocean and South Georgia), Maritime Antarctica and the Antarctic continent (i.e. van , 2011a, 2011b, 2013Zidarova et al 2010Zidarova et al , 2012van de vijver & Zidarova 2011;etc. ).…”

A new European record of Diadesmis fukushimae and its transference to Humidophila genus (Bacillariophyta)

“…VAN DE VIJVER et al 2011) or Lake Baikal (KULIKOVSKIY et al 2012), revealed a biogeographic pattern of several diatoms; they are not »cosmopolitan« with worldwide distribution, as has been generally accepted for a long time. Our fi nding somewhat contradicts the previous idea, as we found a species whose distribution to date was believed to be restricted to the American continent.…”