The Variable Influence of Dispersant on Degradation of Oil Hydrocarbons in Subarctic Deep-Sea Sediments at Low Temperatures (0–5 °C)

Abstract The microbial degradation of petroleum hydrocarbons at low temperatures was investigated in subarctic deep-sea sediments in the Faroe Shetland Channel (FSC). The effect of the marine oil dispersant, Superdispersant 25 on hydrocarbon degradation was also examined. Sediments collected at 500...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Robert M. W. Ferguson, Evangelia Gontikaki, James A. Anderson, Ursula Witte
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/bb9da382044a4bd4a63d906abd97994a
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:bb9da382044a4bd4a63d906abd97994a
record_format	dspace
spelling	oai:doaj.org-article:bb9da382044a4bd4a63d906abd97994a2021-12-02T11:41:08ZThe Variable Influence of Dispersant on Degradation of Oil Hydrocarbons in Subarctic Deep-Sea Sediments at Low Temperatures (0–5 °C)10.1038/s41598-017-02475-92045-2322https://doaj.org/article/bb9da382044a4bd4a63d906abd97994a2017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02475-9https://doaj.org/toc/2045-2322Abstract The microbial degradation of petroleum hydrocarbons at low temperatures was investigated in subarctic deep-sea sediments in the Faroe Shetland Channel (FSC). The effect of the marine oil dispersant, Superdispersant 25 on hydrocarbon degradation was also examined. Sediments collected at 500 and 1000 m depth were spiked with a model oil containing 20 hydrocarbons and incubated at ambient temperature (5 and 0 °C, respectively) with and without marine dispersant. Treatment of sediments with hydrocarbons resulted in the enrichment of Gammaproteobacteria, and specifically the genera Pseudoalteromonas, Pseudomonas, Halomonas, and Cobetia. Hydrocarbon degradation was faster at 5 °C (500 m) with 65–89% of each component degraded after 50 days compared to 0–47% degradation at 0 °C (1000 m), where the aromatic hydrocarbons fluoranthene, anthracene, and Dibenzothiophene showed no degradation. Dispersant significantly increased the rate of degradation at 1000 m, but had no effect at 500 m. There was no statistically significant effect of Superdispersant 25 on the bacterial community structure at either station. These results show that the indigenous bacterial community in the FSC has the capacity to mitigate some of the effects of a potential oil spill, however, the effect of dispersant is ambiguous and further research is needed to understand the implications of its use.Robert M. W. FergusonEvangelia GontikakiJames A. AndersonUrsula WitteNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-13 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Robert M. W. Ferguson Evangelia Gontikaki James A. Anderson Ursula Witte The Variable Influence of Dispersant on Degradation of Oil Hydrocarbons in Subarctic Deep-Sea Sediments at Low Temperatures (0–5 °C)
description	Abstract The microbial degradation of petroleum hydrocarbons at low temperatures was investigated in subarctic deep-sea sediments in the Faroe Shetland Channel (FSC). The effect of the marine oil dispersant, Superdispersant 25 on hydrocarbon degradation was also examined. Sediments collected at 500 and 1000 m depth were spiked with a model oil containing 20 hydrocarbons and incubated at ambient temperature (5 and 0 °C, respectively) with and without marine dispersant. Treatment of sediments with hydrocarbons resulted in the enrichment of Gammaproteobacteria, and specifically the genera Pseudoalteromonas, Pseudomonas, Halomonas, and Cobetia. Hydrocarbon degradation was faster at 5 °C (500 m) with 65–89% of each component degraded after 50 days compared to 0–47% degradation at 0 °C (1000 m), where the aromatic hydrocarbons fluoranthene, anthracene, and Dibenzothiophene showed no degradation. Dispersant significantly increased the rate of degradation at 1000 m, but had no effect at 500 m. There was no statistically significant effect of Superdispersant 25 on the bacterial community structure at either station. These results show that the indigenous bacterial community in the FSC has the capacity to mitigate some of the effects of a potential oil spill, however, the effect of dispersant is ambiguous and further research is needed to understand the implications of its use.
format	article
author	Robert M. W. Ferguson Evangelia Gontikaki James A. Anderson Ursula Witte
author_facet	Robert M. W. Ferguson Evangelia Gontikaki James A. Anderson Ursula Witte
author_sort	Robert M. W. Ferguson
title	The Variable Influence of Dispersant on Degradation of Oil Hydrocarbons in Subarctic Deep-Sea Sediments at Low Temperatures (0–5 °C)
title_short	The Variable Influence of Dispersant on Degradation of Oil Hydrocarbons in Subarctic Deep-Sea Sediments at Low Temperatures (0–5 °C)
title_full	The Variable Influence of Dispersant on Degradation of Oil Hydrocarbons in Subarctic Deep-Sea Sediments at Low Temperatures (0–5 °C)
title_fullStr	The Variable Influence of Dispersant on Degradation of Oil Hydrocarbons in Subarctic Deep-Sea Sediments at Low Temperatures (0–5 °C)
title_full_unstemmed	The Variable Influence of Dispersant on Degradation of Oil Hydrocarbons in Subarctic Deep-Sea Sediments at Low Temperatures (0–5 °C)
title_sort	variable influence of dispersant on degradation of oil hydrocarbons in subarctic deep-sea sediments at low temperatures (0–5 °c)
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/bb9da382044a4bd4a63d906abd97994a
work_keys_str_mv	AT robertmwferguson thevariableinfluenceofdispersantondegradationofoilhydrocarbonsinsubarcticdeepseasedimentsatlowtemperatures05c AT evangeliagontikaki thevariableinfluenceofdispersantondegradationofoilhydrocarbonsinsubarcticdeepseasedimentsatlowtemperatures05c AT jamesaanderson thevariableinfluenceofdispersantondegradationofoilhydrocarbonsinsubarcticdeepseasedimentsatlowtemperatures05c AT ursulawitte thevariableinfluenceofdispersantondegradationofoilhydrocarbonsinsubarcticdeepseasedimentsatlowtemperatures05c AT robertmwferguson variableinfluenceofdispersantondegradationofoilhydrocarbonsinsubarcticdeepseasedimentsatlowtemperatures05c AT evangeliagontikaki variableinfluenceofdispersantondegradationofoilhydrocarbonsinsubarcticdeepseasedimentsatlowtemperatures05c AT jamesaanderson variableinfluenceofdispersantondegradationofoilhydrocarbonsinsubarcticdeepseasedimentsatlowtemperatures05c AT ursulawitte variableinfluenceofdispersantondegradationofoilhydrocarbonsinsubarcticdeepseasedimentsatlowtemperatures05c
_version_	1718395482339803136

The Variable Influence of Dispersant on Degradation of Oil Hydrocarbons in Subarctic Deep-Sea Sediments at Low Temperatures (0–5 °C)

Ejemplares similares