Dispersed oil disrupts microbial pathways in pelagic food webs.

Most of the studies of microbial processes in response to the Deepwater Horizon oil spill focused on the deep water plume, and not on the surface communities. The effects of the crude oil and the application of dispersants on the coastal microbial food web in the northern Gulf of Mexico have not bee...

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Autores principales:	Alice C Ortmann, Jennifer Anders, Naomi Shelton, Limin Gong, Anthony G Moss, Robert H Condon
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/de1a3c5a2b73430587231529ea9cdf29
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spelling	oai:doaj.org-article:de1a3c5a2b73430587231529ea9cdf292021-11-18T07:10:11ZDispersed oil disrupts microbial pathways in pelagic food webs.1932-620310.1371/journal.pone.0042548https://doaj.org/article/de1a3c5a2b73430587231529ea9cdf292012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22860136/?tool=EBIhttps://doaj.org/toc/1932-6203Most of the studies of microbial processes in response to the Deepwater Horizon oil spill focused on the deep water plume, and not on the surface communities. The effects of the crude oil and the application of dispersants on the coastal microbial food web in the northern Gulf of Mexico have not been well characterized even though these regions support much of the fisheries production in the Gulf. A mesocosm experiment was carried out to determine how the microbial community off the coast of Alabama may have responded to the influx of surface oil and dispersants. While the addition of glucose or oil alone resulted in an increase in the biomass of ciliates, suggesting transfer of carbon to higher trophic levels was likely; a different effect was seen in the presence of dispersant. The addition of dispersant or dispersed oil resulted in an increase in the biomass of heterotrophic prokaryotes, but a significant inhibition of ciliates, suggesting a reduction in grazing and decrease in transfer of carbon to higher trophic levels. Similar patterns were observed in two separate experiments with different starting nutrient regimes and microbial communities suggesting that the addition of dispersant and dispersed oil to the northern Gulf of Mexico waters in 2010 may have reduced the flow of carbon to higher trophic levels, leading to a decrease in the production of zooplankton and fish on the Alabama shelf.Alice C OrtmannJennifer AndersNaomi SheltonLimin GongAnthony G MossRobert H CondonPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 7, p e42548 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Alice C Ortmann Jennifer Anders Naomi Shelton Limin Gong Anthony G Moss Robert H Condon Dispersed oil disrupts microbial pathways in pelagic food webs.
description	Most of the studies of microbial processes in response to the Deepwater Horizon oil spill focused on the deep water plume, and not on the surface communities. The effects of the crude oil and the application of dispersants on the coastal microbial food web in the northern Gulf of Mexico have not been well characterized even though these regions support much of the fisheries production in the Gulf. A mesocosm experiment was carried out to determine how the microbial community off the coast of Alabama may have responded to the influx of surface oil and dispersants. While the addition of glucose or oil alone resulted in an increase in the biomass of ciliates, suggesting transfer of carbon to higher trophic levels was likely; a different effect was seen in the presence of dispersant. The addition of dispersant or dispersed oil resulted in an increase in the biomass of heterotrophic prokaryotes, but a significant inhibition of ciliates, suggesting a reduction in grazing and decrease in transfer of carbon to higher trophic levels. Similar patterns were observed in two separate experiments with different starting nutrient regimes and microbial communities suggesting that the addition of dispersant and dispersed oil to the northern Gulf of Mexico waters in 2010 may have reduced the flow of carbon to higher trophic levels, leading to a decrease in the production of zooplankton and fish on the Alabama shelf.
format	article
author	Alice C Ortmann Jennifer Anders Naomi Shelton Limin Gong Anthony G Moss Robert H Condon
author_facet	Alice C Ortmann Jennifer Anders Naomi Shelton Limin Gong Anthony G Moss Robert H Condon
author_sort	Alice C Ortmann
title	Dispersed oil disrupts microbial pathways in pelagic food webs.
title_short	Dispersed oil disrupts microbial pathways in pelagic food webs.
title_full	Dispersed oil disrupts microbial pathways in pelagic food webs.
title_fullStr	Dispersed oil disrupts microbial pathways in pelagic food webs.
title_full_unstemmed	Dispersed oil disrupts microbial pathways in pelagic food webs.
title_sort	dispersed oil disrupts microbial pathways in pelagic food webs.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/de1a3c5a2b73430587231529ea9cdf29
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Dispersed oil disrupts microbial pathways in pelagic food webs.

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