Bacterial population and biodegradation potential in chronically crude oil-contaminated marine sediments are strongly linked to temperature.
Sci Rep
; 5: 11651, 2015 Jun 29.
Article
em En
| MEDLINE
| ID: mdl-26119183
ABSTRACT
Two of the largest crude oil-polluted areas in the world are the semi-enclosed Mediterranean and Red Seas, but the effect of chronic pollution remains incompletely understood on a large scale. We compared the influence of environmental and geographical constraints and anthropogenic forces (hydrocarbon input) on bacterial communities in eight geographically separated oil-polluted sites along the coastlines of the Mediterranean and Red Seas. The differences in community compositions and their biodegradation potential were primarily associated (P < 0.05) with both temperature and chemical diversity. Furthermore, we observed a link between temperature and chemical and biological diversity that was stronger in chronically polluted sites than in pristine ones where accidental oil spills occurred. We propose that low temperature increases bacterial richness while decreasing catabolic diversity and that chronic pollution promotes catabolic diversification. Our results further suggest that the bacterial populations in chronically polluted sites may respond more promptly in degrading petroleum after accidental oil spills.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Temperatura
/
Bactérias
/
Petróleo
/
Poluição por Petróleo
/
Sedimentos Geológicos
Tipo de estudo:
Prognostic_studies
País/Região como assunto:
Europa
Idioma:
En
Revista:
Sci Rep
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Espanha