Biodegradation of water-accommodated aromatic oil compounds in Arctic seawater at 0 °C
Oil spills in Arctic marine environments are expected to increase concurrently with the expansion of shipping routes and petroleum exploitation into previously inaccessible ice-dominated regions. Most research on oil biodegradation focusses on the bulk oil, but the fate of the water-accommodated fra...
Published in: | Chemosphere |
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Language: | English |
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2022
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Online Access: | https://pure.au.dk/portal/da/publications/biodegradation-of-wateraccommodated-aromatic-oil-compounds-in-arctic-seawater-at-0-c(1e398921-2fbd-4ee8-b9ab-a0b744d463f6).html https://doi.org/10.1016/j.chemosphere.2021.131751 http://www.scopus.com/inward/record.url?scp=85112306703&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/1e398921-2fbd-4ee8-b9ab-a0b744d463f6 2023-12-31T10:01:52+01:00 Biodegradation of water-accommodated aromatic oil compounds in Arctic seawater at 0 °C Gomes, Ana Christensen, Jan H. Gründger, Friederike Kjeldsen, Kasper Urup Rysgaard, Søren Vergeynst, Leendert 2022-01 https://pure.au.dk/portal/da/publications/biodegradation-of-wateraccommodated-aromatic-oil-compounds-in-arctic-seawater-at-0-c(1e398921-2fbd-4ee8-b9ab-a0b744d463f6).html https://doi.org/10.1016/j.chemosphere.2021.131751 http://www.scopus.com/inward/record.url?scp=85112306703&partnerID=8YFLogxK eng eng https://pure.au.dk/portal/da/publications/biodegradation-of-wateraccommodated-aromatic-oil-compounds-in-arctic-seawater-at-0-c(1e398921-2fbd-4ee8-b9ab-a0b744d463f6).html info:eu-repo/semantics/restrictedAccess Gomes , A , Christensen , J H , Gründger , F , Kjeldsen , K U , Rysgaard , S & Vergeynst , L 2022 , ' Biodegradation of water-accommodated aromatic oil compounds in Arctic seawater at 0 °C ' , Chemosphere , vol. 286 , 131751 . https://doi.org/10.1016/j.chemosphere.2021.131751 Aromatic hydrocarbon Greenland Marine ecosystem Oil pollution Oil-degrading bacteria Water-accommodated fraction article 2022 ftuniaarhuspubl https://doi.org/10.1016/j.chemosphere.2021.131751 2023-12-07T00:06:04Z Oil spills in Arctic marine environments are expected to increase concurrently with the expansion of shipping routes and petroleum exploitation into previously inaccessible ice-dominated regions. Most research on oil biodegradation focusses on the bulk oil, but the fate of the water-accommodated fraction (WAF), mainly composed of toxic aromatic compounds, is largely underexplored. To evaluate the bacterial degradation capacity of such dissolved aromatics in Greenlandic seawater, microcosms consisting of 0 °C seawater polluted with WAF were investigated over a 3-month period. With a half-life (t 1/2 ) of 26 days, m-xylene was the fastest degraded compound, as measured by gas chromatography - mass spectrometry. Substantial slower degradation was observed for ethylbenzene, naphthalenes, phenanthrene, acenaphthylene, acenaphthene and fluorenes with t 1/2 of 40–105 days. Colwellia, identified by 16S rRNA gene sequencing, was the main potential degrader of m-xylene. This genus occupied up to 47 % of the bacterial community until day 10 in the microcosms. Cycloclasticus and Zhongshania aliphaticivorans, potentially utilizing one-to three-ringed aromatics, replaced Colwellia between day 10 and 96 and occupied up to 6 % and 23 % of the community, respectively. Although most of the WAF can ultimately be eliminated in microcosms, our results suggest that the restoration of an oil-impacted Arctic environment may be slow as most analysed compounds had t 1/2 of over 2–3 months and the detrimental effects of a spill towards the marine ecosystem likely persist during this time. Article in Journal/Newspaper Arctic Arctic Greenland greenlandic Aarhus University: Research Chemosphere 286 131751 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Aromatic hydrocarbon Greenland Marine ecosystem Oil pollution Oil-degrading bacteria Water-accommodated fraction |
spellingShingle |
Aromatic hydrocarbon Greenland Marine ecosystem Oil pollution Oil-degrading bacteria Water-accommodated fraction Gomes, Ana Christensen, Jan H. Gründger, Friederike Kjeldsen, Kasper Urup Rysgaard, Søren Vergeynst, Leendert Biodegradation of water-accommodated aromatic oil compounds in Arctic seawater at 0 °C |
topic_facet |
Aromatic hydrocarbon Greenland Marine ecosystem Oil pollution Oil-degrading bacteria Water-accommodated fraction |
description |
Oil spills in Arctic marine environments are expected to increase concurrently with the expansion of shipping routes and petroleum exploitation into previously inaccessible ice-dominated regions. Most research on oil biodegradation focusses on the bulk oil, but the fate of the water-accommodated fraction (WAF), mainly composed of toxic aromatic compounds, is largely underexplored. To evaluate the bacterial degradation capacity of such dissolved aromatics in Greenlandic seawater, microcosms consisting of 0 °C seawater polluted with WAF were investigated over a 3-month period. With a half-life (t 1/2 ) of 26 days, m-xylene was the fastest degraded compound, as measured by gas chromatography - mass spectrometry. Substantial slower degradation was observed for ethylbenzene, naphthalenes, phenanthrene, acenaphthylene, acenaphthene and fluorenes with t 1/2 of 40–105 days. Colwellia, identified by 16S rRNA gene sequencing, was the main potential degrader of m-xylene. This genus occupied up to 47 % of the bacterial community until day 10 in the microcosms. Cycloclasticus and Zhongshania aliphaticivorans, potentially utilizing one-to three-ringed aromatics, replaced Colwellia between day 10 and 96 and occupied up to 6 % and 23 % of the community, respectively. Although most of the WAF can ultimately be eliminated in microcosms, our results suggest that the restoration of an oil-impacted Arctic environment may be slow as most analysed compounds had t 1/2 of over 2–3 months and the detrimental effects of a spill towards the marine ecosystem likely persist during this time. |
format |
Article in Journal/Newspaper |
author |
Gomes, Ana Christensen, Jan H. Gründger, Friederike Kjeldsen, Kasper Urup Rysgaard, Søren Vergeynst, Leendert |
author_facet |
Gomes, Ana Christensen, Jan H. Gründger, Friederike Kjeldsen, Kasper Urup Rysgaard, Søren Vergeynst, Leendert |
author_sort |
Gomes, Ana |
title |
Biodegradation of water-accommodated aromatic oil compounds in Arctic seawater at 0 °C |
title_short |
Biodegradation of water-accommodated aromatic oil compounds in Arctic seawater at 0 °C |
title_full |
Biodegradation of water-accommodated aromatic oil compounds in Arctic seawater at 0 °C |
title_fullStr |
Biodegradation of water-accommodated aromatic oil compounds in Arctic seawater at 0 °C |
title_full_unstemmed |
Biodegradation of water-accommodated aromatic oil compounds in Arctic seawater at 0 °C |
title_sort |
biodegradation of water-accommodated aromatic oil compounds in arctic seawater at 0 °c |
publishDate |
2022 |
url |
https://pure.au.dk/portal/da/publications/biodegradation-of-wateraccommodated-aromatic-oil-compounds-in-arctic-seawater-at-0-c(1e398921-2fbd-4ee8-b9ab-a0b744d463f6).html https://doi.org/10.1016/j.chemosphere.2021.131751 http://www.scopus.com/inward/record.url?scp=85112306703&partnerID=8YFLogxK |
genre |
Arctic Arctic Greenland greenlandic |
genre_facet |
Arctic Arctic Greenland greenlandic |
op_source |
Gomes , A , Christensen , J H , Gründger , F , Kjeldsen , K U , Rysgaard , S & Vergeynst , L 2022 , ' Biodegradation of water-accommodated aromatic oil compounds in Arctic seawater at 0 °C ' , Chemosphere , vol. 286 , 131751 . https://doi.org/10.1016/j.chemosphere.2021.131751 |
op_relation |
https://pure.au.dk/portal/da/publications/biodegradation-of-wateraccommodated-aromatic-oil-compounds-in-arctic-seawater-at-0-c(1e398921-2fbd-4ee8-b9ab-a0b744d463f6).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.chemosphere.2021.131751 |
container_title |
Chemosphere |
container_volume |
286 |
container_start_page |
131751 |
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1786807398225149952 |