Journal Pre-proof Trophic diversity and carbon sources supporting fish communities along a pollution gradient in a tropical river Débora Reis de Carvalho, Carlos Bernardo Mascarenhas Alves, Marcelo Zacharias Moreira, Paulo Santos Pompeu PII: S0048-9697(20)33398-2 DOI: https://doi.org/10.1016/j.scitotenv.2020.139878 Reference: STOTEN 139878 To appear in: Science of the Total Environment Received date: 17 March 2020 Revised date: 14 May 2020 Accepted date: 30 May 2020 Please cite this article as: D.R. de Carvalho, C.B.M. Alves, M.Z. Moreira, et al., Trophic diversity and carbon sources supporting fish communities along a pollution gradient in a tropical river, Science of the Total Environment (2020), https://doi.org/10.1016/ j.scitotenv.2020.139878 This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2020 Published by Elsevier.