Microbial diversity alteration reveals biomarkers of contamination in soil-river-lake continuum

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dc.contributor.authorBourhane, Zeina
dc.contributor.authorLanzén, Anders
dc.contributor.authorCagnon, Christine
dc.contributor.authorAtai, Emmanuel
dc.contributor.authorBorja, Angel
dc.contributor.authorCravo-Laureau, Cristiana
dc.contributor.authorDuran, Robert
dc.date.accessioned2021-08-12T13:57:49Z
dc.date.available2021-08-12T13:57:49Z
dc.date.issued2021-07-31
dc.description.abstractMicrobial communities inhabiting soil-water-sediment continuum in coastal areas provide important ecosystem services. Their adaptation in response to environmental stressors, particularly mitigating the impact of pollutants discharged from human activities, has been considered for the development of microbial biomonitoring tools, but their use is still in the infancy. Here, chemical and molecular (16S rRNA gene metabarcoding) approaches were combined in order to determine the impact of pollutants on microbial assemblages inhabiting the aquatic network of a soil-water-sediment continuum around the Ichkeul Lake (Tunisia), an area highly impacted by human activities. Samples were collected within the soil-river-lake continuum at three stations in dry (summer) and wet (winter) seasons. The contaminant pressure index (PI), which integrates Polycyclic aromatic hydrocarbons (PAHs), alkanes, Organochlorine pesticides (OCPs) and metal contents, and the microbial pressure index microgAMBI, based on bacterial community structure, showed significant correlation with contamination level and differences between seasons. The comparison of prokaryotic communities further revealed specific assemblages for soil, river and lake sediments. Correlation analyses identified potential "specialist" genera for the different compartments, whose abundances were correlated with the pollutant type found. Additionally, PICRUSt analysis revealed the metabolic potential for pollutant transformation or degradation of the identified "specialist" species, providing information to estimate the recovery capacity of the ecosystem. Such findings offer the possibility to define a relevant set of microbial indicators for assessing the effects of human activities on aquatic ecosystems. Microbial indicators, including the detection of “specialist” and sensitive taxa, and their functional capacity, might be useful, in combination with integrative microbial indices, to constitute accurate biomonitoring tools for the management and restoration of complex coastal aquatic systems.en_UK
dc.identifier.citationBourhane Z, Lanzén A, Cagnon C, et al., (2022) Microbial diversity alteration reveals biomarkers of contamination in soil-river-lake continuum. Journal of Hazardous Materials, Volume 421, January 2022, Article number 126789en_UK
dc.identifier.issn0304-3894
dc.identifier.urihttps://doi.org/10.1016/j.jhazmat.2021.126789
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/16990
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectFunctional potentialen_UK
dc.subjectCommunity structureen_UK
dc.subjectMicrobial ecologyen_UK
dc.subjectEnvironmental monitoringen_UK
dc.subjectEnvironmental pollutionen_UK
dc.subjectAquatic ecosystemsen_UK
dc.titleMicrobial diversity alteration reveals biomarkers of contamination in soil-river-lake continuumen_UK
dc.typeArticleen_UK

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