Gas seepage pockmark microbiomes suggest the presence of sedimentary coal seams in the Öxarfjörður graben of northeastern Iceland
Natural gas seepage pockmarks are found off- and onshore in the Öxarfjörður graben, Iceland. The bacterial communities of two onshore seepage sites were analysed by 16S rRNA gene amplicon sequencing; the geochemical characteristics, hydrocarbon content, and the carbon isotope composition of the site...
Published in: | Canadian Journal of Microbiology |
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2020
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Online Access: | http://dx.doi.org/10.1139/cjm-2019-0081 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjm-2019-0081 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjm-2019-0081 |
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crcansciencepubl:10.1139/cjm-2019-0081 2024-05-12T08:05:42+00:00 Gas seepage pockmark microbiomes suggest the presence of sedimentary coal seams in the Öxarfjörður graben of northeastern Iceland Þorsteinsdóttir, Guðný Vala Blischke, Anett Sigurbjörnsdóttir, M. Auður Òskarsson, Finnbogi Arnarson, Þórarinn Sveinn Magnússon, Kristinn P. Vilhelmsson, Oddur 2020 http://dx.doi.org/10.1139/cjm-2019-0081 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjm-2019-0081 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjm-2019-0081 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Microbiology volume 66, issue 1, page 25-38 ISSN 0008-4166 1480-3275 Genetics Molecular Biology Applied Microbiology and Biotechnology General Medicine Immunology Microbiology journal-article 2020 crcansciencepubl https://doi.org/10.1139/cjm-2019-0081 2024-04-18T06:54:50Z Natural gas seepage pockmarks are found off- and onshore in the Öxarfjörður graben, Iceland. The bacterial communities of two onshore seepage sites were analysed by 16S rRNA gene amplicon sequencing; the geochemical characteristics, hydrocarbon content, and the carbon isotope composition of the sites were also determined. While one site was found to be characterised by biogenic origin of methane gas, with a carbon isotope ratio (δ 13 C (‰)) of −63.2, high contents of organic matter and complex hydrocarbons, the other site showed a mixed origin of the methane gas (δ 13 C (‰) = −26.6) with geothermal characteristics and lower organic matter content. While both sites harboured Proteobacteria as the most abundant bacterial phyla, the Deltaproteobacteria were more abundant at the geothermal site and the Alphaproteobacteria at the biogenic site. The Dehalococcoidia class of phylum Chloroflexi was abundant at the geothermal site while the Anaerolineae class was more abundant at the biogenic site. Bacterial strains from the seepage pockmarks were isolated on a variety of selective media targeting bacteria with bioremediation potential. A total of 106 strains were isolated and characterised, including representatives from the phyla Proteobacteria, Bacteroidetes, Firmicutes, and Actinobacteria. This article describes the first microbial study on gas seepage pockmarks in Iceland. Article in Journal/Newspaper Iceland Canadian Science Publishing Öxarfjörður ENVELOPE(-16.750,-16.750,66.250,66.250) Canadian Journal of Microbiology 66 1 25 38 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Genetics Molecular Biology Applied Microbiology and Biotechnology General Medicine Immunology Microbiology |
spellingShingle |
Genetics Molecular Biology Applied Microbiology and Biotechnology General Medicine Immunology Microbiology Þorsteinsdóttir, Guðný Vala Blischke, Anett Sigurbjörnsdóttir, M. Auður Òskarsson, Finnbogi Arnarson, Þórarinn Sveinn Magnússon, Kristinn P. Vilhelmsson, Oddur Gas seepage pockmark microbiomes suggest the presence of sedimentary coal seams in the Öxarfjörður graben of northeastern Iceland |
topic_facet |
Genetics Molecular Biology Applied Microbiology and Biotechnology General Medicine Immunology Microbiology |
description |
Natural gas seepage pockmarks are found off- and onshore in the Öxarfjörður graben, Iceland. The bacterial communities of two onshore seepage sites were analysed by 16S rRNA gene amplicon sequencing; the geochemical characteristics, hydrocarbon content, and the carbon isotope composition of the sites were also determined. While one site was found to be characterised by biogenic origin of methane gas, with a carbon isotope ratio (δ 13 C (‰)) of −63.2, high contents of organic matter and complex hydrocarbons, the other site showed a mixed origin of the methane gas (δ 13 C (‰) = −26.6) with geothermal characteristics and lower organic matter content. While both sites harboured Proteobacteria as the most abundant bacterial phyla, the Deltaproteobacteria were more abundant at the geothermal site and the Alphaproteobacteria at the biogenic site. The Dehalococcoidia class of phylum Chloroflexi was abundant at the geothermal site while the Anaerolineae class was more abundant at the biogenic site. Bacterial strains from the seepage pockmarks were isolated on a variety of selective media targeting bacteria with bioremediation potential. A total of 106 strains were isolated and characterised, including representatives from the phyla Proteobacteria, Bacteroidetes, Firmicutes, and Actinobacteria. This article describes the first microbial study on gas seepage pockmarks in Iceland. |
format |
Article in Journal/Newspaper |
author |
Þorsteinsdóttir, Guðný Vala Blischke, Anett Sigurbjörnsdóttir, M. Auður Òskarsson, Finnbogi Arnarson, Þórarinn Sveinn Magnússon, Kristinn P. Vilhelmsson, Oddur |
author_facet |
Þorsteinsdóttir, Guðný Vala Blischke, Anett Sigurbjörnsdóttir, M. Auður Òskarsson, Finnbogi Arnarson, Þórarinn Sveinn Magnússon, Kristinn P. Vilhelmsson, Oddur |
author_sort |
Þorsteinsdóttir, Guðný Vala |
title |
Gas seepage pockmark microbiomes suggest the presence of sedimentary coal seams in the Öxarfjörður graben of northeastern Iceland |
title_short |
Gas seepage pockmark microbiomes suggest the presence of sedimentary coal seams in the Öxarfjörður graben of northeastern Iceland |
title_full |
Gas seepage pockmark microbiomes suggest the presence of sedimentary coal seams in the Öxarfjörður graben of northeastern Iceland |
title_fullStr |
Gas seepage pockmark microbiomes suggest the presence of sedimentary coal seams in the Öxarfjörður graben of northeastern Iceland |
title_full_unstemmed |
Gas seepage pockmark microbiomes suggest the presence of sedimentary coal seams in the Öxarfjörður graben of northeastern Iceland |
title_sort |
gas seepage pockmark microbiomes suggest the presence of sedimentary coal seams in the öxarfjörður graben of northeastern iceland |
publisher |
Canadian Science Publishing |
publishDate |
2020 |
url |
http://dx.doi.org/10.1139/cjm-2019-0081 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjm-2019-0081 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjm-2019-0081 |
long_lat |
ENVELOPE(-16.750,-16.750,66.250,66.250) |
geographic |
Öxarfjörður |
geographic_facet |
Öxarfjörður |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Canadian Journal of Microbiology volume 66, issue 1, page 25-38 ISSN 0008-4166 1480-3275 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjm-2019-0081 |
container_title |
Canadian Journal of Microbiology |
container_volume |
66 |
container_issue |
1 |
container_start_page |
25 |
op_container_end_page |
38 |
_version_ |
1798848054012411904 |