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Photosynthetic bacteria in meromictic lakes and stratified fjords of the Vestfold Hills, Antarctica by C. M. Burke; H. R. Burton is a Environmental Science article available to read on EtoBox.

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Thirteen meromictic lakes and two permanently stratified fjords in the Vestfold Hills, Antarctica, were surveyed in 1983 for photosynthetic bacteria. Burton Lake and Ellis Fjord were sampled throughout the year to determine seasonal variations. Physical and chemical parameters were recorded and related to the species present. The dominant species in waters with salinities of 5 100.7 g kg-r were Chlorobium vibrioforme and Chlorobium limicola with populations at the 02-H2S interface in the range 0.3 to 6.7 x lo6 ml-'. Neither of these species was found at higher salinities. Thiocapsa roseopersicina and a Chromatium sp. were found in low numbers (< lo5 ml-') in most of the same waters as the Chlorobium spp. These bacterial phototrophs developed in a narrow band below the 02-H,S interface where both light and H2S were available. Very low numbers (< lo2 ml-') of Rhodopseudomonas palustris were found in both oxic and anoxic waters having salinity I 148 g kg-'. The dominance of the Chlorobium spp. is ascribed to their more efficient maintenance metabolism during the darkness, their faster growth at low light intensities (< 1 PE me2 s-l) and the lack of selective filtering of incident ligh

Who reads Photosynthetic bacteria in meromictic lakes and stratified fjords of the Vestfold Hills, Antarctica?

Author

C. M. Burke; H. R. Burton

Publisher

Springer; Springer-Verlag; Springer (Kluwer Academic Publishers); Kluwer Academic Publishers; Springer Science and Business Media LLC (ISSN 1573-5141)

Published

1988

Language

EN

Field

Environmental Science (Physical Sciences)