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  • 1
    Language: English
    In: Journal of Soils and Sediments, 2011, Vol.11(6), pp.1099-1114
    Description: Byline: Sabine Ulrike Gerbersdorf (1), Henner Hollert (2), Markus Brinkmann (2), Silke Wieprecht (1), Holger Schuttrumpf (3), Werner Manz (4) Keywords: Biofilm; Freshwater; Interdisciplinary approach; Management of sediments; Pollutants; Risk assessment Abstract: Purpose Freshwater sediments and their attached microbial communities (biofilms) are essential features of rivers and lakes, providing valuable ecosystem services such as nutrient recycling or self-purification which extend beyond the aquatic environment. Anthropogenic pollutants, whether from the industrial era or as a result of our contemporary lifestyles, can negatively affect these functions with hitherto unknown consequences on ecology, the economy and human health. Thus far, the singular view of the involved disciplines such as ecotoxicology, environmental microbiology, hydrology and geomorphology has prevented a deeper understanding of this emerging issue. Main features This paper discusses briefly the progressions and the state-of-the-art methods within the disciplines of concern related to contaminated sediments, ranging from ecotoxicological test systems, microbiological/molecular approaches to unravel changes of microbial ecosystems, up to the modelling of sediment transport and sorption/desorption of associated pollutants. The first bilateral research efforts on contaminated sediments include efforts to assess ecotoxicological sediment risk including sediment mobility (i.e. ecotoxicology and engineering), enhance bioremediation potential (i.e. microbiology and ecotoxicology) or to understand biostabilisation processes of sediments by microbial assemblages (i.e. microbiology and engineering). Conclusions and perspectives In freshwater habitats, acute, chronic and mechanism-specific toxic effects on organisms, shifts in composition, structure and functionality of benthic microbial communities, as well as the obstruction of important ecosystem services by continuously discharged and long-deposited pollutants, should be related to the in situ sediment dynamics. To achieve an improved understanding of the ecology of freshwater sediments and the impairment of their important ecosystem functions by human-derived pollutants, we suggest a "triad plus x" approach combining advanced methods of ecotoxicology, environmental microbiology and engineering science. Author Affiliation: (1) Department of Hydraulic Engineering and Water Resources Management, Institute of Hydraulic Engineering, University Stuttgart, Pfaffenwaldring 61, 70569, Stuttgart, Germany (2) Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, Worringer Weg 1, 52074, Aachen, Germany (3) Institute of Hydraulic Engineering and Water Resources Management, RWTH Aachen University, Mies-van-der-Rohe-Strasse 1, 52056, Aachen, Germany (4) Institute for Integrated Natural Sciences, University Koblenz--Landau, Universitatsstrasse 1, 56070, Koblenz, Germany Article History: Registration Date: 25/04/2011 Received Date: 20/11/2010 Accepted Date: 24/04/2011 Online Date: 11/05/2011 Article note: Responsible editor: Ian G. Droppo
    Keywords: Biofilm ; Freshwater ; Interdisciplinary approach ; Management of sediments ; Pollutants ; Risk assessment
    ISSN: 1439-0108
    E-ISSN: 1614-7480
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