The purpose of this work was to explore the level of contamination by organic pollutants (Polycyclic Aromatic Hydrocarbons, Nonylphenols, Bisphenol A) and the response of the functional properties of the microbial communities in coastal lagoon sediment. Overall the analysed sediments (12 sites in four lagoons) showed a moderate pollution (mean ?PAHs 65.0±23.0; ?NP 52±30, BPA 19.0±9.3; ng/g). The ratio between the bacterial C production (BCP) and respiration rates (CR) of the benthic microbial community varied linearly with ?PAHs and ?NP concentration (r=0.43, p<0.05). The highest contamination levels showed as well relatively high extracellular enzyme activities (beta-glucosidase, lipase and aminopeptidase activities). Such trend let infer a higher rate of growth of the microbial biomass in the contaminated sediment that can uphold the development of communities adapted to exploit specific food sources.

Organic pollutants and microbial communities :insight from coastal lagoon sediments of the Po river delta

N Ademollo;S Amalfitano;AB Petrangeli;
2017

Abstract

The purpose of this work was to explore the level of contamination by organic pollutants (Polycyclic Aromatic Hydrocarbons, Nonylphenols, Bisphenol A) and the response of the functional properties of the microbial communities in coastal lagoon sediment. Overall the analysed sediments (12 sites in four lagoons) showed a moderate pollution (mean ?PAHs 65.0±23.0; ?NP 52±30, BPA 19.0±9.3; ng/g). The ratio between the bacterial C production (BCP) and respiration rates (CR) of the benthic microbial community varied linearly with ?PAHs and ?NP concentration (r=0.43, p<0.05). The highest contamination levels showed as well relatively high extracellular enzyme activities (beta-glucosidase, lipase and aminopeptidase activities). Such trend let infer a higher rate of growth of the microbial biomass in the contaminated sediment that can uphold the development of communities adapted to exploit specific food sources.
2017
Istituto di Ricerca Sulle Acque - IRSA
coastal lagoons
SEDIMENTS
ORGANIC POLLUTANTS
BIODEGRADATION
MICROBIAL COMMUNITIES
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/341763
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