Bacterial number, heterotrophy and extracellular enzyme activity in the Bransfield Strait, Antarctica
To study the structure and function of bacterial populations in the Bransfield Strait, Antarctica, which is located between S 62°-64° and W 56°-62°, twenty nine sampling stations were chosen. Samples were collected from seawater and sediment during austral summer (1989 Dec. - 1990 Jan.) and analyzed...
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Institut für Meereskunde
1991
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ftoceanrep:oai:oceanrep.geomar.de:56275 2023-05-15T13:30:18+02:00 Bacterial number, heterotrophy and extracellular enzyme activity in the Bransfield Strait, Antarctica Kim, Sang-Jin 1991 text https://oceanrep.geomar.de/id/eprint/56275/ https://oceanrep.geomar.de/id/eprint/56275/1/Kim_SJ_1991.pdf en eng Institut für Meereskunde https://oceanrep.geomar.de/id/eprint/56275/1/Kim_SJ_1991.pdf Kim, S. J. (1991) Bacterial number, heterotrophy and extracellular enzyme activity in the Bransfield Strait, Antarctica. Open Access Kieler Meeresforschungen - Sonderheft, 8 . pp. 205-212. cc_by_3.0 info:eu-repo/semantics/openAccess Article NonPeerReviewed 1991 ftoceanrep 2023-04-07T16:02:57Z To study the structure and function of bacterial populations in the Bransfield Strait, Antarctica, which is located between S 62°-64° and W 56°-62°, twenty nine sampling stations were chosen. Samples were collected from seawater and sediment during austral summer (1989 Dec. - 1990 Jan.) and analyzed for total bacterial number, total saprophytic bacterial number, heterotrophic activity and extracellular enzyme activities. The number of total bacteria in seawater was between 1.0 x 104 cells/ml and 1.6 x 105 cells/ml, and total saprophytic bacteria were between 0.5 x 102 CFU/l and 8.0 x 104 CFU/l. The population density of saprophytic bacteria was significantly low, giving less than 10-4 of the total bacterial number, in this region. Turnover times of glucose and leucine in seawater were in the ranges of 41 to 2094 hrs, and 56 to 980 hrs, respectively. Turnover times of these organic matters were extremely variable depending on the sampling station and water depth. In the sediments, the enzyme activities of α-glucosidase, N-acetyl- β -glucosaminidase and aminopeptidase of the fast growing bacterial population were higher than those of the slow growing bacterial population, β-glucosidase activities, however, were higher in the slow growing bacterial population. Article in Journal/Newspaper Antarc* Antarctica Bransfield Strait OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Austral Bransfield Strait |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
To study the structure and function of bacterial populations in the Bransfield Strait, Antarctica, which is located between S 62°-64° and W 56°-62°, twenty nine sampling stations were chosen. Samples were collected from seawater and sediment during austral summer (1989 Dec. - 1990 Jan.) and analyzed for total bacterial number, total saprophytic bacterial number, heterotrophic activity and extracellular enzyme activities. The number of total bacteria in seawater was between 1.0 x 104 cells/ml and 1.6 x 105 cells/ml, and total saprophytic bacteria were between 0.5 x 102 CFU/l and 8.0 x 104 CFU/l. The population density of saprophytic bacteria was significantly low, giving less than 10-4 of the total bacterial number, in this region. Turnover times of glucose and leucine in seawater were in the ranges of 41 to 2094 hrs, and 56 to 980 hrs, respectively. Turnover times of these organic matters were extremely variable depending on the sampling station and water depth. In the sediments, the enzyme activities of α-glucosidase, N-acetyl- β -glucosaminidase and aminopeptidase of the fast growing bacterial population were higher than those of the slow growing bacterial population, β-glucosidase activities, however, were higher in the slow growing bacterial population. |
format |
Article in Journal/Newspaper |
author |
Kim, Sang-Jin |
spellingShingle |
Kim, Sang-Jin Bacterial number, heterotrophy and extracellular enzyme activity in the Bransfield Strait, Antarctica |
author_facet |
Kim, Sang-Jin |
author_sort |
Kim, Sang-Jin |
title |
Bacterial number, heterotrophy and extracellular enzyme activity in the Bransfield Strait, Antarctica |
title_short |
Bacterial number, heterotrophy and extracellular enzyme activity in the Bransfield Strait, Antarctica |
title_full |
Bacterial number, heterotrophy and extracellular enzyme activity in the Bransfield Strait, Antarctica |
title_fullStr |
Bacterial number, heterotrophy and extracellular enzyme activity in the Bransfield Strait, Antarctica |
title_full_unstemmed |
Bacterial number, heterotrophy and extracellular enzyme activity in the Bransfield Strait, Antarctica |
title_sort |
bacterial number, heterotrophy and extracellular enzyme activity in the bransfield strait, antarctica |
publisher |
Institut für Meereskunde |
publishDate |
1991 |
url |
https://oceanrep.geomar.de/id/eprint/56275/ https://oceanrep.geomar.de/id/eprint/56275/1/Kim_SJ_1991.pdf |
geographic |
Austral Bransfield Strait |
geographic_facet |
Austral Bransfield Strait |
genre |
Antarc* Antarctica Bransfield Strait |
genre_facet |
Antarc* Antarctica Bransfield Strait |
op_relation |
https://oceanrep.geomar.de/id/eprint/56275/1/Kim_SJ_1991.pdf Kim, S. J. (1991) Bacterial number, heterotrophy and extracellular enzyme activity in the Bransfield Strait, Antarctica. Open Access Kieler Meeresforschungen - Sonderheft, 8 . pp. 205-212. |
op_rights |
cc_by_3.0 info:eu-repo/semantics/openAccess |
_version_ |
1766006935128113152 |