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Physical properties of epilithic river biofilm as a new lead to perform pollution bioassessments in overseas territories
Chlordecone (CLD) levels measured in the rivers of the French West Indies were among the highest values detected worldwide in freshwater ecosystems, and its contamination is recognised as a severe health, environmental, agricultural, economic, and social issue. In these tropical volcanic islands, ri...
Autores principales: | , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7560750/ https://www.ncbi.nlm.nih.gov/pubmed/33057038 http://dx.doi.org/10.1038/s41598-020-73948-7 |
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author | Monti, Dominique Hubas, Cedric Lourenço, Xavier Begarin, Farid Haouisée, Alexandre Romana, Laurence Lefrançois, Estelle Jestin, Alexandra Budzinski, Hélène Tapie, Nathalie Risser, Théo Mansot, Jean-Louis Keith, Philippe Gros, Olivier Lopez, Pascal-Jean Lauga, Béatrice |
author_facet | Monti, Dominique Hubas, Cedric Lourenço, Xavier Begarin, Farid Haouisée, Alexandre Romana, Laurence Lefrançois, Estelle Jestin, Alexandra Budzinski, Hélène Tapie, Nathalie Risser, Théo Mansot, Jean-Louis Keith, Philippe Gros, Olivier Lopez, Pascal-Jean Lauga, Béatrice |
author_sort | Monti, Dominique |
collection | PubMed |
description | Chlordecone (CLD) levels measured in the rivers of the French West Indies were among the highest values detected worldwide in freshwater ecosystems, and its contamination is recognised as a severe health, environmental, agricultural, economic, and social issue. In these tropical volcanic islands, rivers show strong originalities as simplified food webs, or numerous amphidromous migrating species, making the bioindication of contaminations a difficult issue. The objective of this study was to search for biological responses to CLD pollution in a spatially fixed and long-lasting component of the rivers in the West Indies: the epilithic biofilm. Physical properties were investigated through complementary analyses: friction, viscosity as well as surface adhesion were analyzed and coupled with measures of biofilm carbon content and exopolymeric substance (EPS) production. Our results have pointed out a mesoscale chemical and physical reactivity of the biofilm that can be correlated with CLD contamination. We were able to demonstrate that epilithic biofilm physical properties can effectively be used to infer freshwater environmental quality of French Antilles rivers. The friction coefficient is reactive to contamination and well correlated to carbon content and EPS production. Monitoring biofilm physical properties could offer many advantages to potential users in terms of effectiveness and ease of use, rather than more complex or time-consuming analyses. |
format | Online Article Text |
id | pubmed-7560750 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-75607502020-10-19 Physical properties of epilithic river biofilm as a new lead to perform pollution bioassessments in overseas territories Monti, Dominique Hubas, Cedric Lourenço, Xavier Begarin, Farid Haouisée, Alexandre Romana, Laurence Lefrançois, Estelle Jestin, Alexandra Budzinski, Hélène Tapie, Nathalie Risser, Théo Mansot, Jean-Louis Keith, Philippe Gros, Olivier Lopez, Pascal-Jean Lauga, Béatrice Sci Rep Article Chlordecone (CLD) levels measured in the rivers of the French West Indies were among the highest values detected worldwide in freshwater ecosystems, and its contamination is recognised as a severe health, environmental, agricultural, economic, and social issue. In these tropical volcanic islands, rivers show strong originalities as simplified food webs, or numerous amphidromous migrating species, making the bioindication of contaminations a difficult issue. The objective of this study was to search for biological responses to CLD pollution in a spatially fixed and long-lasting component of the rivers in the West Indies: the epilithic biofilm. Physical properties were investigated through complementary analyses: friction, viscosity as well as surface adhesion were analyzed and coupled with measures of biofilm carbon content and exopolymeric substance (EPS) production. Our results have pointed out a mesoscale chemical and physical reactivity of the biofilm that can be correlated with CLD contamination. We were able to demonstrate that epilithic biofilm physical properties can effectively be used to infer freshwater environmental quality of French Antilles rivers. The friction coefficient is reactive to contamination and well correlated to carbon content and EPS production. Monitoring biofilm physical properties could offer many advantages to potential users in terms of effectiveness and ease of use, rather than more complex or time-consuming analyses. Nature Publishing Group UK 2020-10-14 /pmc/articles/PMC7560750/ /pubmed/33057038 http://dx.doi.org/10.1038/s41598-020-73948-7 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Monti, Dominique Hubas, Cedric Lourenço, Xavier Begarin, Farid Haouisée, Alexandre Romana, Laurence Lefrançois, Estelle Jestin, Alexandra Budzinski, Hélène Tapie, Nathalie Risser, Théo Mansot, Jean-Louis Keith, Philippe Gros, Olivier Lopez, Pascal-Jean Lauga, Béatrice Physical properties of epilithic river biofilm as a new lead to perform pollution bioassessments in overseas territories |
title | Physical properties of epilithic river biofilm as a new lead to perform pollution bioassessments in overseas territories |
title_full | Physical properties of epilithic river biofilm as a new lead to perform pollution bioassessments in overseas territories |
title_fullStr | Physical properties of epilithic river biofilm as a new lead to perform pollution bioassessments in overseas territories |
title_full_unstemmed | Physical properties of epilithic river biofilm as a new lead to perform pollution bioassessments in overseas territories |
title_short | Physical properties of epilithic river biofilm as a new lead to perform pollution bioassessments in overseas territories |
title_sort | physical properties of epilithic river biofilm as a new lead to perform pollution bioassessments in overseas territories |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7560750/ https://www.ncbi.nlm.nih.gov/pubmed/33057038 http://dx.doi.org/10.1038/s41598-020-73948-7 |
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