Abstract
The aim of this chapter is to highlight the importance of microbial attached communities in the assessment of the effects of pollutants on freshwater ecosystems. We particularly focus on the role of heterotrophs in biofilms developing on different substrata. Firstly, an overview of the importance of microbial communities for the whole ecosystem processes is given, focusing on bacteria and fungi either living in consortia with autotrophs or as the microbial decomposing community on plant litter in river ecosystems. A series of detailed examples of direct effects of priority and emerging pollutants on bacteria in epilithic biofilms and on attached decomposers are included. Microbial ecological interactions between organisms in heterogeneous complex communities are highlighted describing the indirect effects observed in a series of study cases. A collection of laboratory and field study data is used to demonstrate the relevance of natural heterogeneous communities to obtain a more realistic approach to ecosystem processes. Finally, an upscaling from the effects observed at the microbial scale to the potential implication for ecosystems health and risk is included.
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Proia, L., Cassió, F., Pascoal, C., Tlili, A., Romaní, A.M. (2012). The Use of Attached Microbial Communities to Assess Ecological Risks of Pollutants in River Ecosystems: The Role of Heterotrophs. In: Guasch, H., Ginebreda, A., Geiszinger, A. (eds) Emerging and Priority Pollutants in Rivers. The Handbook of Environmental Chemistry(), vol 19. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-25722-3_3
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