Antarctic Science

Papers—Life Sciences and Oceanography

The aquatic testate amoebae fauna of the Strømness Bay area, South Georgia

L. Beyens a1, D. Chardez a2, D. De Baere a3 and C. Verbruggen a4
a1 University of Antwerpen, RUCA, Department of Biology, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium
a2 Faculté des Sciences Agronomiques de l'Etat, Lab. de Zoology Générale et Faunistique, B-5800 Gembloux, Belgium
a3 De Jonghestraat 18, B-2880 Bornem, Belgium
a4 University of Ghent, Geological Institute, Krijgslaan 281, B-9000 Ghent, Belgium

Article author query
beyens l   [PubMed][Google Scholar] 
chardez d   [PubMed][Google Scholar] 
de baere d   [PubMed][Google Scholar] 
verbruggen c   [PubMed][Google Scholar] 


Forty six taxa of testate amoebae were found in 45 samples of aquatic environments ranging from small pools to lakes. Four assemblages were distinguished which, to some degree, can be related ecologically to different pH ranges, and to differences in the habitat structure. The Nebela collaris assemblage occurs in acid pools mostly vegetated with mosses. The Centropyxis gibba gibbosa–Euglypha tuberculata–Difflugia globularis/globulus assemblage is found in the sediments of circumneutral to slightly alkaline lakes. Both of the other assemblages are mainly found in pools, which are more (for the Trinema assemblage) or less vegetated with mosses, in slightly acid (the Difflugia penardi–Centropyxis aerophila assemblage) or circumneutral to slightly alkaline (the Trinema lineare assemblage) conditions. A generic comparison with the Arctic fauna indicates differences, especially in the role of Difflugia as a dominant genus in aquatic habitats.

(Received June 10 1994)
(Accepted October 17 1994)

Key Words: testate amoebae; ecology; subantarctic; Protista.