Use of the MicroResp (TM) method to assess pollution-induced community tolerance to metals for lotic biofilms

TitleUse of the MicroResp (TM) method to assess pollution-induced community tolerance to metals for lotic biofilms
Publication TypeJournal Article
Year of Publication2011
AuthorsTlili A., Marechal M., Montuelle B., Volat B., Dorigo U., Bérard A.
JournalEnvironmental PollutionEnvironmental Pollution
Volume159
Pagination18-24
Date PublishedJan
ISBN Number0269-7491
Accession NumberWOS:000285129600003
Keywordsalgal communities, bacterial communities, carbon-source utilization, contamination gradient, copper, fresh-water periphyton, heavy metals, heavy-metals, microbial communities, microresp (tm), pollution-induced community tolerance, river, River biofilm, soil, substrate-induced respiration
Abstract

Understanding the ecological status of aquatic ecosystems and the impact of anthropogenic contamination requires correlating exposure to toxicants with impact on biological communities. Several tools exist for assessing the ecotoxicity of substances, but there is still a need for new tools that are ecologically relevant and easy to use. We have developed a protocol based on the substrate-induced respiration of a river biofilm community, using the MicroResp(TM) technique, in a pollution-induced community tolerance approach. The results show that MicroResp(TM) can be used in bioassays to assess the toxicity toward biofilm communities of a wide range of metals (Cu, Zn, Cd, Ag, Ni, Fe, Co, Al and As). Moreover, a community-level physiological profile based on the mineralization of different carbon substrates was established. Finally, the utility of MicroResp(TM) was confirmed in an in-situ study showing gradient of tolerance to copper correlated to a contamination gradient of this metal in a small river. (C) 2010 Elsevier Ltd. All rights reserved.

Alternate JournalEnviron Pollut<br/>Environ Pollut