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

Published online by Cambridge University Press:  12 May 2004

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

Abstract

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.

Type
Papers—Life Sciences and Oceanography
Copyright
© Antarctic Science Ltd 1995

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