Microbial community structure shifts are associated with temperature, dispersants and nutrients in crude oil-contaminated seawaters

TitleMicrobial community structure shifts are associated with temperature, dispersants and nutrients in crude oil-contaminated seawaters
Publication TypeJournal Article
Year of Publication2016
AuthorsMeng L., Liu H., Bao MT, Sun PY
JournalMarine Pollution Bulletin
Volume111
Pagination203-212
Date PublishedOct
ISBN Number0025-326X
Accession NumberWOS:000384854100032
KeywordsOil and Gas Degradation
AbstractThis study tracked structure shifts of bacterial compositions before, during and after invading by crude oil to determine the microbial response and explore how temperature, dispersants and nutrients affect the composition of microbial communities or their activities of biodegradation in artificial marine environment. During petroleum hydrocarbons exposed, the composition and functional dynamics of marine microbial communities were altered, favoring bacteria that could utilize this rich carbon source such as the Proteobacteria, Firmicutes, Actinobacteria and Bacteroidetes phyla. Low temperature as a dominant factor decreased bacterial richness and catabolic diversity due to abated enzymes activities in correlation with the process of biodegradation. Dispersants exerted no negative consequences on microbial composition, however, bacterial composition by the Chloroflexi, TM6, OP8, Cyanobacteria and Gemmatimonadetes phyla increased. It seemed that more frequent fertilizer application could be equally safe to bacteria and increased significantly the abundance of bacterial strains but Actinobacteria phyla decreased. (C) 2016 Elsevier Ltd. All rights reserved.
DOI10.1016/j.marpolbul.2016.07.010