Filamentous sulfur bacteria, Beggiatoa spp., in arctic marine sediments (Svalbard, 79°N)
Fjord sediments on the west coast of the arctic archipelago Svalbard were surveyed to understand whether large filamentous sulfur bacteria of the genus Beggiatoa thrive at seawater temperatures permanently near freezing. Two sediments had abundant populations of Beggiatoa , while at six sites, only...
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ftuniaarhuspubl:oai:pure.atira.dk:publications/fa92d080-ca34-11df-8cb9-000ea68e967b 2023-05-15T14:24:05+02:00 Filamentous sulfur bacteria, Beggiatoa spp., in arctic marine sediments (Svalbard, 79°N) Jørgensen, Bo Barker Dunker, Rita Grünke, Stefanie Røy, Hans 2010 https://pure.au.dk/portal/da/publications/filamentous-sulfur-bacteria-beggiatoa-spp-in-arctic-marine-sediments-svalbard-79n(fa92d080-ca34-11df-8cb9-000ea68e967b).html eng eng info:eu-repo/semantics/restrictedAccess Jørgensen , B B , Dunker , R , Grünke , S & Røy , H 2010 , ' Filamentous sulfur bacteria, Beggiatoa spp., in arctic marine sediments (Svalbard, 79°N) ' , F E M S Microbiology Ecology , vol. 73 , no. 3 , pp. 500-513 . article 2010 ftuniaarhuspubl 2022-02-09T23:49:41Z Fjord sediments on the west coast of the arctic archipelago Svalbard were surveyed to understand whether large filamentous sulfur bacteria of the genus Beggiatoa thrive at seawater temperatures permanently near freezing. Two sediments had abundant populations of Beggiatoa , while at six sites, only sporadic occurrences were observed. We conclude that Beggiatoa , although previously unnoticed, are widespread in these arctic fjord sediments. Beggiatoa ranged in diameter from 2 to 52 μm and, by those tested, stored nitrate in vacuoles at up to 260 mM. The 16S rRNA gene sequence of a 20-μm-wide filament is closely associated with other large, marine, nitrate-storing Beggiatoa . The Beggiatoa mostly occurred in the upper 2-5 cm of oxidized surface sediment between oxygen and the deeper sulfidic zone. In spite of a very low or an undetectable sulfide concentration, sulfate reduction provided abundant H 2 S in this zone. The total living biomass of Beggiatoa filaments at one study site varied over 3 years between 1.13 and 3.36 g m -2 . Because of their large size, Beggiatoa accounted for up to 15% of the total prokaryotic biomass, even though the filament counts at this site were rather low, comprising <1/10 000 of the bacterial numbers on a cell basis. Article in Journal/Newspaper Arctic Arctic Archipelago Arctic Svalbard Aarhus University: Research Arctic Svalbard |
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Open Polar |
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Aarhus University: Research |
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ftuniaarhuspubl |
language |
English |
description |
Fjord sediments on the west coast of the arctic archipelago Svalbard were surveyed to understand whether large filamentous sulfur bacteria of the genus Beggiatoa thrive at seawater temperatures permanently near freezing. Two sediments had abundant populations of Beggiatoa , while at six sites, only sporadic occurrences were observed. We conclude that Beggiatoa , although previously unnoticed, are widespread in these arctic fjord sediments. Beggiatoa ranged in diameter from 2 to 52 μm and, by those tested, stored nitrate in vacuoles at up to 260 mM. The 16S rRNA gene sequence of a 20-μm-wide filament is closely associated with other large, marine, nitrate-storing Beggiatoa . The Beggiatoa mostly occurred in the upper 2-5 cm of oxidized surface sediment between oxygen and the deeper sulfidic zone. In spite of a very low or an undetectable sulfide concentration, sulfate reduction provided abundant H 2 S in this zone. The total living biomass of Beggiatoa filaments at one study site varied over 3 years between 1.13 and 3.36 g m -2 . Because of their large size, Beggiatoa accounted for up to 15% of the total prokaryotic biomass, even though the filament counts at this site were rather low, comprising <1/10 000 of the bacterial numbers on a cell basis. |
format |
Article in Journal/Newspaper |
author |
Jørgensen, Bo Barker Dunker, Rita Grünke, Stefanie Røy, Hans |
spellingShingle |
Jørgensen, Bo Barker Dunker, Rita Grünke, Stefanie Røy, Hans Filamentous sulfur bacteria, Beggiatoa spp., in arctic marine sediments (Svalbard, 79°N) |
author_facet |
Jørgensen, Bo Barker Dunker, Rita Grünke, Stefanie Røy, Hans |
author_sort |
Jørgensen, Bo Barker |
title |
Filamentous sulfur bacteria, Beggiatoa spp., in arctic marine sediments (Svalbard, 79°N) |
title_short |
Filamentous sulfur bacteria, Beggiatoa spp., in arctic marine sediments (Svalbard, 79°N) |
title_full |
Filamentous sulfur bacteria, Beggiatoa spp., in arctic marine sediments (Svalbard, 79°N) |
title_fullStr |
Filamentous sulfur bacteria, Beggiatoa spp., in arctic marine sediments (Svalbard, 79°N) |
title_full_unstemmed |
Filamentous sulfur bacteria, Beggiatoa spp., in arctic marine sediments (Svalbard, 79°N) |
title_sort |
filamentous sulfur bacteria, beggiatoa spp., in arctic marine sediments (svalbard, 79°n) |
publishDate |
2010 |
url |
https://pure.au.dk/portal/da/publications/filamentous-sulfur-bacteria-beggiatoa-spp-in-arctic-marine-sediments-svalbard-79n(fa92d080-ca34-11df-8cb9-000ea68e967b).html |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Arctic Archipelago Arctic Svalbard |
genre_facet |
Arctic Arctic Archipelago Arctic Svalbard |
op_source |
Jørgensen , B B , Dunker , R , Grünke , S & Røy , H 2010 , ' Filamentous sulfur bacteria, Beggiatoa spp., in arctic marine sediments (Svalbard, 79°N) ' , F E M S Microbiology Ecology , vol. 73 , no. 3 , pp. 500-513 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1766296561281662976 |