Vers une surveillance écologique basée sur la décomposition potentielle de la cellulose

Autor: Fanny Colas, François Guérold, Jérémy Jabiol
Přispěvatelé: Centre National de la Recherche Scientifique (CNRS), Risques, Ecosystèmes, Vulnérabilité, Environnement, Résilience (RECOVER), Aix Marseille Université (AMU)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Pôle Écla - écosystèmes lacustres (ECLA), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Office français de la biodiversité (OFB), Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Terre et Environnement de Lorraine (OTELo), Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)
Rok vydání: 2020
Předmět:
Zdroj: Water Research
Water Research, IWA Publishing, 2020, 170, pp.4. ⟨10.1016/j.watres.2019.115295⟩
Water Research, 2020, 170, pp.4. ⟨10.1016/j.watres.2019.115295⟩
ISSN: 0043-1354
Popis: [Departement_IRSTEA]Eaux [ADD1_IRSTEA]Adaptation des territoires au changement global; International audience; There is increasing recognition that functional bioindicators are needed for ecosystem health assessments. In this perspective, cotton strip assays are widely considered as a standard method to account for organic matter decomposition in streams. However, cotton cultivation and manufacture raise both environmental and societal dramatic issues that are e in our opinion e irreconcilable with the objectives of bioindication. In this study, we assessed the relevance of four alternative e eco-friendly e textiles (made of organic cotton, hemp and linen) by comparing their chemical composition and degradation rates in six streams. Chemical composition exhibited low variations among textiles, but contrasted sharply with the expectation that cotton is mostly composed of cellulose. Moreover, surprisingly high nutrient (0.49% N) contents occurred in the conventional cotton strips compared with the organic textiles (N < 0.12%). All textiles provided similar degradation rates across the six streams, meaning that they could be interchangeably used as alternatives to conventional cotton strips.We thus call for the adoption of such ethical and eco-friendly tools as 'next-generation' indicators for the functioning of stream ecosystem.
Databáze: OpenAIRE