Biodiversity of freshwater algae and cyanobacteria on deglaciated northern part of James Ross Island, Antarctica. A preliminary study.

• Published in: Czech Polar Reports
• Main Authors: Skácelová Kateřina, Barták Miloš, Coufalík Pavel, Nývlt Daniel, Trnková Kateřina
• Format: Article in Journal/Newspaper
• Language: English
• Published: Masarykova univerzita 2013
• Subjects: polar lakes ponds seepages freshwater ecosystems; polární jezera mokřady sladkovodní ekosystémy; Austral; Ross Island; Ostrova; Rosse; Antarc*; Antarctica; James Ross Island
• Online Access: https://is.muni.cz/publication/1136517; https://doi.org/10.5817/CPR2013-2-12

Freshwater algae and cyanobacteria have been studied at the James Ross Island (Ant- arctica) since the first Czech expedition to the James Ross Island area in austral summer of 2004. Main emphasis, however, has been devoted to cyanobacteria and diatoms. Therefore, recent knowledge on biodiversity of freshwater species of green algae is fragmentary. The main aim of presented study was to contribute to species list of green algae and cyanobacteria from James Ross Island. To evaluate species richness of algae and cyanobacteria, samples of water/mats from 6 different lakes, shallow ponds, and seepages located in northern deglaciated part of the James Ross Island were collected in austral summers 2012 and 2013, respectively. The samples were analysed using optical microscopy approach after transport to Czech laboratories. Algal and cyanobacterial taxa were determined according to morphological characteristics. Frequencies of individual taxa occurrence in samples were evaluated. Species richness differences between sampling sites was found. Dominating taxa differed between collection sites as well. Altogether, 41 algal and cyanobacterial taxa were found. Some species and genera: Cosmarium sp., Actinotaenium curtum, Staurastrum punctulatum and Chlorobotrys regularis are reported for James Ross Island for the first time. In some samples, there were some species that remained undetermined due to limitations of light microscopy and morphological approach. Byly studovány sladkovodní řasy a sinice ostrova Jamese Rosse, Antarktida. Výsledky analýzy biodiverzity jsou uvedeny podle charakteru stanoviště. Freshwater algae and cyanobacteria have been studied at the James Ross Island (Ant- arctica) since the first Czech expedition to the James Ross Island area in austral summer of 2004. Main emphasis, however, has been devoted to cyanobacteria and diatoms. Therefore, recent knowledge on biodiversity of freshwater species of green algae is fragmentary. The main aim of presented study was to contribute to species list of green ...