Copper and Gold Nanoparticles Increase Nutrient Excretion Rates of Primary Consumers

Autor: Benjamin T. Castellon, Emily S. Bernhardt, Astrid Avellan, Christina M. Bergemann, Benjamin P. Colman, Ryan S. King, Brittany G. Perrotta, Marie Simonin, Jeffrey A. Back, Cole W. Matson, Steven M. Anderson, Gregory V. Lowry
Přispěvatelé: Center for the Environmental Implications of Nanotechnology, Duke University, Institut de Recherche en Horticulture et Semences (IRHS), Université d'Angers (UA)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Baylor University, Duke Univ, Dept Biol, Durham, NC 27708 USA, Duke University [Durham], Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Collège de France (CdF (institution))-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA), Montana State University (MSU), Carnegie Mellon University [Pittsburgh] (CMU), Baylor University Mass Spectrometry Center, Baylor University Isotope Laboratory, National Science Foundation (NSF), United States Environmental Protection Agency : EF0830093, Center for the Environmental Implications of NanoTechnology (CEINT) : DBI-1266252, United States Department of Energy (DOE) : DE-AC02-06CH11357, C. Gus Glasscock, Jr. Endowed Fund for Excellence in Environmental Sciences at Baylor University., Université d'Angers (UA)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-INSTITUT AGRO Agrocampus Ouest, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Environmental Science and Technology
Environmental Science and Technology, American Chemical Society, 2020, 54 (16), pp.10170-10180. ⟨10.1021/acs.est.0c02197⟩
Environmental Science and Technology, 2020, 54 (16), pp.10170-10180. ⟨10.1021/acs.est.0c02197⟩
ISSN: 0013-936X
1520-5851
Popis: Freshwater ecosystems are exposed to engineered nanoparticles through municipal and industrial wastewater-effluent discharges and agricultural nonpoint source runoff. Because previous work has shown that engineered nanoparticles from these sources can accumulate in freshwater algal assemblages, we hypothesized that nanoparticles may affect the biology of primary consumers by altering the processing of two critical nutrients associated with growth and survivorship, nitrogen and phosphorus. We tested this hypothesis by measuring the excretion rates of nitrogen and phosphorus of Physella acuta, a ubiquitous pulmonate snail that grazes heavily on periphyton, exposed to either copper or gold engineered nanoparticles for 6 months in an outdoor wetland mesocosm experiment. Chronic nanoparticle exposure doubled nutrient excretion when compared to the control. Gold nanoparticles increased nitrogen and phosphorus excretion rates more than copper nanoparticles, but overall, both nanoparticles led to higher consumer excretion, despite contrasting particle stability and physiochemical properties. Snails in mesocosms enriched with nitrogen and phosphorus had overall higher excretion rates than ones in ambient (no nutrients added) mesocosms. Stimulation patterns were different between nitrogen and phosphorus excretion, which could have implications for the resulting nutrient ratio in the water column. These results suggest that low concentrations of engineered nanoparticles could alter the metabolism of consumers and increase consumer-mediated nutrient recycling rates, potentially intensifying eutrophication in aquatic systems, for example, the increased persistence of algal blooms as observed in our mesocosm experiment.
Databáze: OpenAIRE
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