| Title | Distribution patterns of organic pollutants and microbial processes in marine sediments across a gradient of anthropogenic impact |
| Abstract | Marine sediments are part of the hydrological cycle and the ultimate storage compartment of land
derived organic matter, including pollutants. Since relevant microbially-driven processes occurring
at benthic level may affect the quality of the overall aquatic system, the necessity for incorporating
information about microbial communities functioning for ecosystem modelling is arising. The aim
of this field study was to explore the links occurring between sediment contamination patterns by
three selected class of organic pollutants (Polycyclic Aromatic Hydrocarbons, PAHs,
Nonylphenols, NPs, Bisphenol A, BPA) and major microbial properties (Prokaryotic Biomass, PB;
total living biomass, C-ATP; Prokaryotic C Production rate, PCP; Community Respiration rate, CR)
across a gradient of anthropogenic pollution. Sediments were sampled from 34 sites selected along
700 km of the western coastline of the Adriatic Sea. Organic contamination was moderate (PAHs
<830 ng g-1; NPs <350ng g-1; BPA<38ng g-1) and decreased southward. The amount of PAHs
associated carbon (C-PAHs) increased significantly with sediment organic carbon (OC), along with
microbial functional rates. The negative relation between PCP/CR ratio and OC indicated the shift
toward oxidative processes in response to organic pollution and potential toxicity, estimated as
Toxic Equivalents (TEQs). Our outcomes showed that sediment organic contamination and benthic
microbial processes can be intimately linked, with potential repercussions on CO2 emission rates
and C-cycling within the detritus-based trophic web. |
| Source | Environmental pollution (1987) 242, pp. 1860–1870 |
| Keywords | marine sedimentsPolycyclic Aromatic HydrocarbonsNonylphenolsBisphenol Amicrobial 21 biomassprokaryotic C productioncommunity respiration |
| Journal | Environmental pollution (1987) |
| Editor | Elsevier Applied Science Publishers, Barking, Regno Unito |
| Year | 2018 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.envpol.2018.07.081 |
| Authors | A. Zoppini, N. Ademollo, L. Patrolecco, L. Langone, S. Lungarini, W. Dellisanti, S. Amalfitano |
| Text | 389662 2018 10.1016/j.envpol.2018.07.081 ISI Web of Science WOS WOS 000446282600088 Scopus 2 s2.0 85051749769 marine sediments Polycyclic Aromatic Hydrocarbons Nonylphenols Bisphenol A microbial 21 biomass prokaryotic C production community respiration Distribution patterns of organic pollutants and microbial processes in marine sediments across a gradient of anthropogenic impact A. Zoppini, N. Ademollo, L. Patrolecco, L. Langone, S. Lungarini, W. Dellisanti, S. Amalfitano IRSA CNR, IRSA CNR,IRSA CNR, ISMAR CNR, IRSA CNR, IRSA CNR, IRSA CNR Marine sediments are part of the hydrological cycle and the ultimate storage compartment of land derived organic matter, including pollutants. Since relevant microbially driven processes occurring at benthic level may affect the quality of the overall aquatic system, the necessity for incorporating information about microbial communities functioning for ecosystem modelling is arising. The aim of this field study was to explore the links occurring between sediment contamination patterns by three selected class of organic pollutants Polycyclic Aromatic Hydrocarbons, PAHs, Nonylphenols, NPs, Bisphenol A, BPA and major microbial properties Prokaryotic Biomass, PB; total living biomass, C ATP; Prokaryotic C Production rate, PCP; Community Respiration rate, CR across a gradient of anthropogenic pollution. Sediments were sampled from 34 sites selected along 700 km of the western coastline of the Adriatic Sea. Organic contamination was moderate PAHs <830 ng g 1; NPs <350ng g 1; BPA<38ng g 1 and decreased southward. The amount of PAHs associated carbon C PAHs increased significantly with sediment organic carbon OC , along with microbial functional rates. The negative relation between PCP/CR ratio and OC indicated the shift toward oxidative processes in response to organic pollution and potential toxicity, estimated as Toxic Equivalents TEQs . Our outcomes showed that sediment organic contamination and benthic microbial processes can be intimately linked, with potential repercussions on CO2 emission rates and C cycling within the detritus based trophic web. 242 Published version https //www.sciencedirect.com/science/article/abs/pii/S0269749118311084 19/07/2018 il lavoro sperimentale e stato svolto nell ambito del progetto EU PERSEUS grant n. 287600 Distribution patterns of organic pollutants and microbial processes in marine sediments across a gradient of anthropogenic impact reprint Zoppini_EP_18.pdf Articolo in rivista Elsevier Applied Science Publishers 0269 7491 Environmental pollution 1987 Environmental pollution 1987 Environ. pollut. 1987 Environmental pollution 1987 DELLISANTI WALTER ERNESTO LUNGARINI SILVIA luisa.patrolecco PATROLECCO LUISA stefano.amalfitano AMALFITANO STEFANO leonardo.langone LANGONE LEONARDO nicoletta.ademollo ADEMOLLO NICOLETTA annamaria.zoppini ZOPPINI ANNAMARIA PERSEUS Policy oriented marine Environmental Research in the Southern EUropean Seas TA.P04.032.002 Ruolo delle comunita microbiche nei cicli biogeochimici e nella degradazione degli inquinanti |
