THE PRESENCE OF BACTERIA IN PERMAFROST OF THE ALASKAN ARCTIC
The possible occurrence of viable microbes and other forms of life in permanently frozen material has intrigued microbioligists for many years. If present, these may well be the oldest living things on this planet, having survived over a long period of time under frozen conditions. Because of the di...
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ftdtic:AD0618783 2023-05-15T14:54:51+02:00 THE PRESENCE OF BACTERIA IN PERMAFROST OF THE ALASKAN ARCTIC Boyd,William L. Boyd,Josephine W. ARCTIC INST OF NORTH AMERICA WASHINGTON D C 1964-07-16 text/html http://www.dtic.mil/docs/citations/AD0618783 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0618783 en eng http://www.dtic.mil/docs/citations/AD0618783 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS (*BACTERIA PERMAFROST) (*PERMAFROST BACTERIA) HALF LIFE VIABILITY SPORES COLLECTING METHODS CULTURE MEDIA ARCTIC REGIONS ALASKA Text 1964 ftdtic 2016-02-18T18:30:07Z The possible occurrence of viable microbes and other forms of life in permanently frozen material has intrigued microbioligists for many years. If present, these may well be the oldest living things on this planet, having survived over a long period of time under frozen conditions. Because of the difficulties of sampling through permanently frozen ground and due to logistics and other problems of methodology, only few studies on the mocrobial flora of permafrost have been made. To extend these studies and to include quantitative studies of the Alaskan Arctic, a series of holes 32 in. in diameter were drilled to depths of 8-15 ft. in permafrost along a traverse between Elson Lagoon and the village of Barrow. Samples were collected from the wall of the hole for analysis. Throughout the depth of the soil section the number of thermophilic bacteria was more or less constant; markedly fewer mesophilic forms were observed in the permafrost than in the active layer. In general, molds were restricted to the upper 6 in. of the soil and psychrophilic bacteria to the upper 12 in. During this work, many colonies of the thermophilic bacteria were isolated and examined, and almost all were able to produce spores. The question of age of these soil bacteria could only be answered by radiocarbon dating. (Author) Pub. in Canadian Journal of Microbiology v10 p917-9 1964 (Copies available only to DDC users) Prepared in cooperation with Colorado State Univ., Fort Collins. Text Arctic Barrow permafrost Alaska Defense Technical Information Center: DTIC Technical Reports database Arctic |
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Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
(*BACTERIA PERMAFROST) (*PERMAFROST BACTERIA) HALF LIFE VIABILITY SPORES COLLECTING METHODS CULTURE MEDIA ARCTIC REGIONS ALASKA |
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(*BACTERIA PERMAFROST) (*PERMAFROST BACTERIA) HALF LIFE VIABILITY SPORES COLLECTING METHODS CULTURE MEDIA ARCTIC REGIONS ALASKA Boyd,William L. Boyd,Josephine W. THE PRESENCE OF BACTERIA IN PERMAFROST OF THE ALASKAN ARCTIC |
topic_facet |
(*BACTERIA PERMAFROST) (*PERMAFROST BACTERIA) HALF LIFE VIABILITY SPORES COLLECTING METHODS CULTURE MEDIA ARCTIC REGIONS ALASKA |
description |
The possible occurrence of viable microbes and other forms of life in permanently frozen material has intrigued microbioligists for many years. If present, these may well be the oldest living things on this planet, having survived over a long period of time under frozen conditions. Because of the difficulties of sampling through permanently frozen ground and due to logistics and other problems of methodology, only few studies on the mocrobial flora of permafrost have been made. To extend these studies and to include quantitative studies of the Alaskan Arctic, a series of holes 32 in. in diameter were drilled to depths of 8-15 ft. in permafrost along a traverse between Elson Lagoon and the village of Barrow. Samples were collected from the wall of the hole for analysis. Throughout the depth of the soil section the number of thermophilic bacteria was more or less constant; markedly fewer mesophilic forms were observed in the permafrost than in the active layer. In general, molds were restricted to the upper 6 in. of the soil and psychrophilic bacteria to the upper 12 in. During this work, many colonies of the thermophilic bacteria were isolated and examined, and almost all were able to produce spores. The question of age of these soil bacteria could only be answered by radiocarbon dating. (Author) Pub. in Canadian Journal of Microbiology v10 p917-9 1964 (Copies available only to DDC users) Prepared in cooperation with Colorado State Univ., Fort Collins. |
author2 |
ARCTIC INST OF NORTH AMERICA WASHINGTON D C |
format |
Text |
author |
Boyd,William L. Boyd,Josephine W. |
author_facet |
Boyd,William L. Boyd,Josephine W. |
author_sort |
Boyd,William L. |
title |
THE PRESENCE OF BACTERIA IN PERMAFROST OF THE ALASKAN ARCTIC |
title_short |
THE PRESENCE OF BACTERIA IN PERMAFROST OF THE ALASKAN ARCTIC |
title_full |
THE PRESENCE OF BACTERIA IN PERMAFROST OF THE ALASKAN ARCTIC |
title_fullStr |
THE PRESENCE OF BACTERIA IN PERMAFROST OF THE ALASKAN ARCTIC |
title_full_unstemmed |
THE PRESENCE OF BACTERIA IN PERMAFROST OF THE ALASKAN ARCTIC |
title_sort |
presence of bacteria in permafrost of the alaskan arctic |
publishDate |
1964 |
url |
http://www.dtic.mil/docs/citations/AD0618783 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0618783 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Barrow permafrost Alaska |
genre_facet |
Arctic Barrow permafrost Alaska |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/AD0618783 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
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1766326593785954304 |