Diversity of algae and lichens in biological soil crusts of Ardley and King George islands, Antarctica

Antarctic science

Nadine Borchhardt¹  Ulf Schiefelbein²  Nelida Abarca³  Jens Boy⁴  Tatiana Mikhailyuk⁵ 

[1] 1University of Rostock, Institute of Biological Sciences, Applied Ecology & Phycology, Albert-Einstein-Straße 3, D-18059 Rostock, Germany;2Blücherstraße 71, D-18055 Rostock, Germany;3Botanic Garden and Botanical Museum Berlin-Dahlem, Freie Universität Berlin, Königin-Luise-Straße 6-8, D-14195 Berlin, Germany;4Leibniz Universität Hannover, Institute of Soil Sciences, Herrenhäuser Straße 2, D-30419 Hannover, Germany;5M.H. Kholodny Institute of Botany, National Academy of Sciences of Ukraine, Tereschenkivska St. 2, Kyiv UA-01001, Ukraine

关键词: cryptogams;    diatoms;    green algae;    South Shetland Islands;    species composition,;    yellow-green algae;   

DOI  :  10.1017/S0954102016000638

学科分类：自然科学（综合）

来源: Cambridge University Press

【 摘 要 】

In the present study the biodiversity of the most abundant phototrophic organisms forming biological soil crust communities were determined, which included green algae, diatoms, yellow-green algae and lichens in samples collected on Ardley and King George islands, Maritime Antarctic. The species were identified by their morphology using light microscopy, and for lichen identification thin layer chromatography as also used to separate specific secondary metabolites. Several sources of information were summarized in an algae catalogue. The results revealed a high species-richness in Antarctic soil crust communities with 127 species in total. Of which, 106 taxa belonged to algae (41 Chlorophyta, nine Streptophyta, 56 Heterokontophyta) and 21 to lichens in 13 genera. Moreover, soil crust communities with different species compositions were determined for the various sampling locations, which might reflect microclimatic and pedological gradients.

【 授权许可】

CC BY