Bacterial community succession and degradation patterns of hydrocarbons in seawater at low temperature
The risk of oil spills in cold marine environments is expected to increase in response to trans-Arctic shipping and as Arctic oil reserves get exploited. Marine hydrocarbon-degrading microbes can reduce the impact of spilled hydrocarbons, but their degradation capabilities at low temperature are yet...
Published in: | Journal of Hazardous Materials |
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2018
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ftuniaarhuspubl:oai:pure.atira.dk:publications/7bb3ba2d-4985-4214-8a3d-658abd5d4795 2023-05-15T14:57:13+02:00 Bacterial community succession and degradation patterns of hydrocarbons in seawater at low temperature Vergeynst, Leendert Kjeldsen, Kasper U Lassen, Pia Rysgaard, Søren 2018 https://pure.au.dk/portal/da/publications/bacterial-community-succession-and-degradation-patterns-of-hydrocarbons-in-seawater-at-low-temperature(7bb3ba2d-4985-4214-8a3d-658abd5d4795).html https://doi.org/10.1016/j.jhazmat.2018.03.051 eng eng info:eu-repo/semantics/restrictedAccess Vergeynst , L , Kjeldsen , K U , Lassen , P & Rysgaard , S 2018 , ' Bacterial community succession and degradation patterns of hydrocarbons in seawater at low temperature ' , Journal of Hazardous Materials , vol. 353 , pp. 127-134 . https://doi.org/10.1016/j.jhazmat.2018.03.051 article 2018 ftuniaarhuspubl https://doi.org/10.1016/j.jhazmat.2018.03.051 2020-07-18T22:05:45Z The risk of oil spills in cold marine environments is expected to increase in response to trans-Arctic shipping and as Arctic oil reserves get exploited. Marine hydrocarbon-degrading microbes can reduce the impact of spilled hydrocarbons, but their degradation capabilities at low temperature are yet to be uncovered. We combined DNA amplicon sequencing and chemometrics to investigate the effect of decreasing temperature (0-15 °C) on the succession and function of hydrocarbon-degrading bacteria in seawater. The bacterial community and degradation patterns were investigated at time points when a similar amount of hydrocarbons was mineralised at the different temperatures. This allowed decomposing the effect of temperature into a main component related to the reduced microbial activity at low temperature and a secondary effect. The reduced microbial activity at low temperature delayed the microbial community succession and degradation rates. The secondary effect of temperature was most pronounced at 0 °C, where (1) degradation of the least water-soluble n-alkanes (>C12) was suppressed in contrast to a relative stronger degradation of the most water-soluble n-alkanes (<C12) and polycyclic aromatic hydrocarbons; and (2) bacterial taxa which we identified as psychrosensitive were inhibited, whereas taxa identified as psychrophilic flourished. Article in Journal/Newspaper Arctic Aarhus University: Research Arctic Journal of Hazardous Materials 353 127 134 |
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Aarhus University: Research |
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language |
English |
description |
The risk of oil spills in cold marine environments is expected to increase in response to trans-Arctic shipping and as Arctic oil reserves get exploited. Marine hydrocarbon-degrading microbes can reduce the impact of spilled hydrocarbons, but their degradation capabilities at low temperature are yet to be uncovered. We combined DNA amplicon sequencing and chemometrics to investigate the effect of decreasing temperature (0-15 °C) on the succession and function of hydrocarbon-degrading bacteria in seawater. The bacterial community and degradation patterns were investigated at time points when a similar amount of hydrocarbons was mineralised at the different temperatures. This allowed decomposing the effect of temperature into a main component related to the reduced microbial activity at low temperature and a secondary effect. The reduced microbial activity at low temperature delayed the microbial community succession and degradation rates. The secondary effect of temperature was most pronounced at 0 °C, where (1) degradation of the least water-soluble n-alkanes (>C12) was suppressed in contrast to a relative stronger degradation of the most water-soluble n-alkanes (<C12) and polycyclic aromatic hydrocarbons; and (2) bacterial taxa which we identified as psychrosensitive were inhibited, whereas taxa identified as psychrophilic flourished. |
format |
Article in Journal/Newspaper |
author |
Vergeynst, Leendert Kjeldsen, Kasper U Lassen, Pia Rysgaard, Søren |
spellingShingle |
Vergeynst, Leendert Kjeldsen, Kasper U Lassen, Pia Rysgaard, Søren Bacterial community succession and degradation patterns of hydrocarbons in seawater at low temperature |
author_facet |
Vergeynst, Leendert Kjeldsen, Kasper U Lassen, Pia Rysgaard, Søren |
author_sort |
Vergeynst, Leendert |
title |
Bacterial community succession and degradation patterns of hydrocarbons in seawater at low temperature |
title_short |
Bacterial community succession and degradation patterns of hydrocarbons in seawater at low temperature |
title_full |
Bacterial community succession and degradation patterns of hydrocarbons in seawater at low temperature |
title_fullStr |
Bacterial community succession and degradation patterns of hydrocarbons in seawater at low temperature |
title_full_unstemmed |
Bacterial community succession and degradation patterns of hydrocarbons in seawater at low temperature |
title_sort |
bacterial community succession and degradation patterns of hydrocarbons in seawater at low temperature |
publishDate |
2018 |
url |
https://pure.au.dk/portal/da/publications/bacterial-community-succession-and-degradation-patterns-of-hydrocarbons-in-seawater-at-low-temperature(7bb3ba2d-4985-4214-8a3d-658abd5d4795).html https://doi.org/10.1016/j.jhazmat.2018.03.051 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Vergeynst , L , Kjeldsen , K U , Lassen , P & Rysgaard , S 2018 , ' Bacterial community succession and degradation patterns of hydrocarbons in seawater at low temperature ' , Journal of Hazardous Materials , vol. 353 , pp. 127-134 . https://doi.org/10.1016/j.jhazmat.2018.03.051 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.jhazmat.2018.03.051 |
container_title |
Journal of Hazardous Materials |
container_volume |
353 |
container_start_page |
127 |
op_container_end_page |
134 |
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1766329304326602752 |