Community size and metabolic rates of psychrophilic sulfate-reducing bacteria in Arctic marine sediments
The numbers of sulfate reducers in two Arctic sediments within situ temperatures of 2.6 and -1.7 degrees C were determined. Most-probable-number counts were higher at 10 degrees C than at 20 degrees C, indicating the predominance of a psychrophilic community. Mean specific sulfate reduction rates of...
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ftpubman:oai:pure.mpg.de:item_3154146 2023-08-27T04:07:08+02:00 Community size and metabolic rates of psychrophilic sulfate-reducing bacteria in Arctic marine sediments Knoblauch, C. Jørgensen, B. Harder, J. 1999 application/pdf http://hdl.handle.net/21.11116/0000-0005-485E-2 http://hdl.handle.net/21.11116/0000-0005-4860-E eng eng http://hdl.handle.net/21.11116/0000-0005-485E-2 http://hdl.handle.net/21.11116/0000-0005-4860-E info:eu-repo/semantics/openAccess Applied and Environmental Microbiology info:eu-repo/semantics/article 1999 ftpubman 2023-08-02T00:10:07Z The numbers of sulfate reducers in two Arctic sediments within situ temperatures of 2.6 and -1.7 degrees C were determined. Most-probable-number counts were higher at 10 degrees C than at 20 degrees C, indicating the predominance of a psychrophilic community. Mean specific sulfate reduction rates of 19 isolated psychrophiles were compared to corresponding rates of 9 marine, mesophilic sulfate-reducing bacteria. The results indicate that, as a physiological adaptation to the permanently cold Arctic environment, psychrophilic sulfate reducers have considerably higher specific metabolic rates than their mesophilic counterparts at similarly low temperatures. Article in Journal/Newspaper Arctic Max Planck Society: MPG.PuRe Arctic |
institution |
Open Polar |
collection |
Max Planck Society: MPG.PuRe |
op_collection_id |
ftpubman |
language |
English |
description |
The numbers of sulfate reducers in two Arctic sediments within situ temperatures of 2.6 and -1.7 degrees C were determined. Most-probable-number counts were higher at 10 degrees C than at 20 degrees C, indicating the predominance of a psychrophilic community. Mean specific sulfate reduction rates of 19 isolated psychrophiles were compared to corresponding rates of 9 marine, mesophilic sulfate-reducing bacteria. The results indicate that, as a physiological adaptation to the permanently cold Arctic environment, psychrophilic sulfate reducers have considerably higher specific metabolic rates than their mesophilic counterparts at similarly low temperatures. |
format |
Article in Journal/Newspaper |
author |
Knoblauch, C. Jørgensen, B. Harder, J. |
spellingShingle |
Knoblauch, C. Jørgensen, B. Harder, J. Community size and metabolic rates of psychrophilic sulfate-reducing bacteria in Arctic marine sediments |
author_facet |
Knoblauch, C. Jørgensen, B. Harder, J. |
author_sort |
Knoblauch, C. |
title |
Community size and metabolic rates of psychrophilic sulfate-reducing bacteria in Arctic marine sediments |
title_short |
Community size and metabolic rates of psychrophilic sulfate-reducing bacteria in Arctic marine sediments |
title_full |
Community size and metabolic rates of psychrophilic sulfate-reducing bacteria in Arctic marine sediments |
title_fullStr |
Community size and metabolic rates of psychrophilic sulfate-reducing bacteria in Arctic marine sediments |
title_full_unstemmed |
Community size and metabolic rates of psychrophilic sulfate-reducing bacteria in Arctic marine sediments |
title_sort |
community size and metabolic rates of psychrophilic sulfate-reducing bacteria in arctic marine sediments |
publishDate |
1999 |
url |
http://hdl.handle.net/21.11116/0000-0005-485E-2 http://hdl.handle.net/21.11116/0000-0005-4860-E |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Applied and Environmental Microbiology |
op_relation |
http://hdl.handle.net/21.11116/0000-0005-485E-2 http://hdl.handle.net/21.11116/0000-0005-4860-E |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1775347888958734336 |