PAHs sensitivity of picophytoplankton populations in the Red Sea

Handle URI:
http://hdl.handle.net/10754/627739
Title:
PAHs sensitivity of picophytoplankton populations in the Red Sea
Authors:
Kottuparambil, Sreejith; Agusti, Susana ( 0000-0003-0536-7293 )
Abstract:
In this study, we investigated the in situ responses of Red Sea picophytoplankton, the dominant phytoplankton group in the oligotrophic ocean, to two toxic polycyclic aromatic hydrocarbons (PAHs), phenanthrene and pyrene. The experiments were conducted across a latitudinal gradient of the Saudi Arabian Red Sea, an area sensitive to oil pollution. We observed significant adverse effects on the growth and abundance of the picocyanobacteria Synechococcus and picoeukaryotes, at all stations sampled. Prochlorococcus, which was abundant only at one of the stations, also appeared to be affected. Pyrene was found to be more toxic to phytoplankton at all stations. In general, picoeukaryotes exhibited higher sensitivity to PAHs than Synechococcus. Populations in the highly oligotrophic Northern region of the Red Sea were more tolerant to PAHs, presumably influenced by the natural selection of more resistant strains of phytoplankton due to the prolonged exposure to PAHs. Toxicity threshold values estimated here are higher than those reported for picophytoplankton from other oligotrophic marine waters and exceed by far the natural levels of PAHs in many oceans. Our findings reveal a possible adaptation of picophytoplankton populations to oil-related contaminants, which may clearly influence their spatial distribution patterns in the Red Sea.
KAUST Department:
Red Sea Research Center (RSRC); Biological and Environmental Sciences and Engineering (BESE) Division; Marine Science Program
Citation:
Kottuparambil S, Agusti S (2018) PAHs sensitivity of picophytoplankton populations in the Red Sea. Environmental Pollution 239: 607–616. Available: http://dx.doi.org/10.1016/j.envpol.2018.04.079.
Publisher:
Elsevier BV
Journal:
Environmental Pollution
Issue Date:
25-Apr-2018
DOI:
10.1016/j.envpol.2018.04.079
PubMed ID:
29704673
Type:
Article
ISSN:
0269-7491
Sponsors:
This work was supported by the King Abdullah University of Science and Technology (KAUST). We are grateful to the Coastal and Marine Resources Core Lab (CMOR), KAUST and the R/V Thuwal crew for their help during the sampling procedures.
Additional Links:
https://www.sciencedirect.com/science/article/pii/S0269749118305463
Appears in Collections:
Articles; Red Sea Research Center (RSRC); Marine Science Program; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorKottuparambil, Sreejithen
dc.contributor.authorAgusti, Susanaen
dc.date.accessioned2018-05-02T06:04:33Z-
dc.date.available2018-05-02T06:04:33Z-
dc.date.issued2018-04-25en
dc.identifier.citationKottuparambil S, Agusti S (2018) PAHs sensitivity of picophytoplankton populations in the Red Sea. Environmental Pollution 239: 607–616. Available: http://dx.doi.org/10.1016/j.envpol.2018.04.079.en
dc.identifier.issn0269-7491en
dc.identifier.pmid29704673-
dc.identifier.doi10.1016/j.envpol.2018.04.079en
dc.identifier.urihttp://hdl.handle.net/10754/627739-
dc.description.abstractIn this study, we investigated the in situ responses of Red Sea picophytoplankton, the dominant phytoplankton group in the oligotrophic ocean, to two toxic polycyclic aromatic hydrocarbons (PAHs), phenanthrene and pyrene. The experiments were conducted across a latitudinal gradient of the Saudi Arabian Red Sea, an area sensitive to oil pollution. We observed significant adverse effects on the growth and abundance of the picocyanobacteria Synechococcus and picoeukaryotes, at all stations sampled. Prochlorococcus, which was abundant only at one of the stations, also appeared to be affected. Pyrene was found to be more toxic to phytoplankton at all stations. In general, picoeukaryotes exhibited higher sensitivity to PAHs than Synechococcus. Populations in the highly oligotrophic Northern region of the Red Sea were more tolerant to PAHs, presumably influenced by the natural selection of more resistant strains of phytoplankton due to the prolonged exposure to PAHs. Toxicity threshold values estimated here are higher than those reported for picophytoplankton from other oligotrophic marine waters and exceed by far the natural levels of PAHs in many oceans. Our findings reveal a possible adaptation of picophytoplankton populations to oil-related contaminants, which may clearly influence their spatial distribution patterns in the Red Sea.en
dc.description.sponsorshipThis work was supported by the King Abdullah University of Science and Technology (KAUST). We are grateful to the Coastal and Marine Resources Core Lab (CMOR), KAUST and the R/V Thuwal crew for their help during the sampling procedures.en
dc.publisherElsevier BVen
dc.relation.urlhttps://www.sciencedirect.com/science/article/pii/S0269749118305463en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Environmental Pollution. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Environmental Pollution, [, , (2018-04-25)] DOI: 10.1016/j.envpol.2018.04.079 . © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectPAHsen
dc.subjectPhenanthreneen
dc.subjectPyreneen
dc.subjectLC10en
dc.subjectSynechococcusen
dc.subjectRed Seaen
dc.titlePAHs sensitivity of picophytoplankton populations in the Red Seaen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentMarine Science Programen
dc.identifier.journalEnvironmental Pollutionen
dc.eprint.versionPost-printen
kaust.authorKottuparambil, Sreejithen
kaust.authorAgusti, Susanaen

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