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dc.contributor.authorBeddow, Jen
dc.contributor.authorJohnson, RJen
dc.contributor.authorLawson, Ten
dc.contributor.authorBreckels, MNen
dc.contributor.authorWebster, RJen
dc.contributor.authorSmith, BEen
dc.contributor.authorRowland, SJen
dc.contributor.authorWhitby, Cen
dc.date.accessioned2016-02-18T16:28:38Z
dc.date.accessioned2016-02-23T10:44:45Z
dc.date.available2016-02-18T16:28:38Z
dc.date.available2016-02-23T10:44:45Z
dc.date.issued2015-12-12en
dc.identifier.issn0045-6535en
dc.identifier.urihttp://hdl.handle.net/10026.1/4356
dc.description.abstract

Naphthenic acids (NAs) are among the most toxic organic pollutants present in oil sands process waters (OSPW) and enter marine and freshwater environments through natural and anthropogenic sources. We investigated the effects of the acid extractable organic (AEO) fraction of OSPW and individual surrogate NAs, on maximum photosynthetic efficiency of photosystem II (PSII) (FV/FM) and cell growth in Emiliania huxleyi and Chlorella vulgaris as representative marine and freshwater phytoplankton. Whilst FV/FM in E. huxleyi and C. vulgaris was not inhibited by AEO, exposure to two surrogate NAs: (4'-n-butylphenyl)-4-butanoic acid (n-BPBA) and (4'-tert-butylphenyl)-4-butanoic acid (tert-BPBA), caused complete inhibition of FV/FM in E. huxleyi (≥10 mg L(-1)n-BPBA; ≥50 mg L(-1)tert-BPBA) but not in C. vulgaris. Growth rates and cell abundances in E. huxleyi were also reduced when exposed to ≥10 mg L(-1)n- and tert-BPBA; however, higher concentrations of n- and tert-BPBA (100 mg L(-1)) were required to reduce cell growth in C. vulgaris. AEO at ≥10 mg L(-1) stimulated E. huxleyi growth rate (p ≤ 0.002), yet had no apparent effect on C. vulgaris. In conclusion, E. huxleyi was generally more sensitive to NAs than C. vulgaris. This report provides a better understanding of the physiological responses of phytoplankton to NAs which will enable improved monitoring of NA pollution in aquatic ecosystems in the future.

en
dc.format.extent416 - 423en
dc.format.mediumPrint-Electronicen
dc.languageengen
dc.language.isoengen
dc.publisherElsevieren
dc.relation.replaceshttp://hdl.handle.net/10026.1/4345
dc.relation.replaces10026.1/4345
dc.titleThe effect of oil sands process-affected water and model naphthenic acids on photosynthesis and growth in Emiliania huxleyi and Chlorella vulgaris.en
dc.typeJournal Article
plymouth.volume145en
plymouth.journalChemosphereen
dc.identifier.doi10.1016/j.chemosphere.2015.11.046en
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/00 Groups by role
plymouth.organisational-group/Plymouth/00 Groups by role/Professional Services staff
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA07 Earth Systems and Environmental Sciences
plymouth.organisational-group/Plymouth/Research Groups
plymouth.organisational-group/Plymouth/Research Groups/Marine Institute
dcterms.dateAccepted2015-11-15en
dc.rights.embargodate2016-12-13en
dc.identifier.eissn1879-1298en
dc.rights.embargoperiodNot knownen
rioxxterms.versionofrecord10.1016/j.chemosphere.2015.11.046en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2015-12-12en
rioxxterms.typeJournal Article/Reviewen


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