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

• Published in: Phycologia
• Main Authors: Van de Vijver, Bart, Zidarova, Ralitsa, Sterken, Mieke, Verleyen, Elie, de Haan, Myriam, Vyverman, Wim, Hinz, Friedel, Sabbe, Koen
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2011
• Subjects: Biology and Life Sciences; Bacillariophyta; Sub-Antarctic and Antarctic Region; Diatoms; Morphology; Navicula; Taxonomy; SOUTH SHETLAND ISLANDS; KING-GEORGE-ISLAND; SEDIMENT DIATOM ASSEMBLAGES; STROMNESS BAY AREA; JAMES-ROSS-ISLAND; FRESH-WATER; COMPLEX BACILLARIOPHYCEAE; MUELLERIA BACILLARIOPHYTA; DECEPTION ISLAND; SALINE LAKES; Antarctic; Deception Island; Indian; King George Island; Ross Island; South Shetland Islands; Stromness; Stromness Bay; The Antarctic; Antarc*; James Ross Island
• Online Access: https://biblio.ugent.be/publication/2140671; http://hdl.handle.net/1854/LU-2140671; https://doi.org/10.2216/10-49.1; https://biblio.ugent.be/publication/2140671/file/2154017

A revision of the diatom genus Navicula s.s. in inland water samples from the Sub-Antarctic and Antarctic resulted in the description of five new species, viz. Navicula australoshetlandica Van de Vijver sp. nov., N. dobrinatemniskovae Zidarova & Van de Vijver sp. nov., N. cremeri Van de Vijver & Zidarova sp. nov. N. conveyi Van de Vijver sp. nov. and Navicula bicephaloides Van de Vijver & Zidarova sp. nov. The new species are extensively compared with other similar species. The morphology and taxonomy of three other Navicula taxa present in the same materials are briefly discussed. A critical revision of literature reports of Navicula taxa in the Antarctic and Sub-Antarctic region indicates that despite the large number of records the genus is rather species-poor in the Sub-Antarctic and Antarctic. From a biogeographical point of view, there is a clear separation between the Sub-Antarctic localities in the southern Indian Ocean and the islands in the southern Atlantic Ocean, with several species showing a restricted biogeography.