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The effects of zinc on the structure and functioning of a freshwater community: A microcosm experiment.
Environ Toxicol Chem. 2016 11; 35(11):2698-2712.ET

Abstract

A major problem with risk assessment of chemicals is the extrapolation of laboratory single-species toxicity tests, which oversimplify the actual field situation by ignoring species interactions, to natural communities. The authors tested if the bioavailability-normalized 5% hazardous concentration (HC5) estimated from chronic planktonic single-species toxicity data (HC5plankton) for zinc (Zn) is protective for a plankton community and investigated the direct and indirect effects of Zn (at HC5 and HC50) on a freshwater community's structure and function. Microcosms were exposed to 3 different Zn concentrations (background, HC5plankton = 75 μg Zn/L and HC50plankton = 300 μg Zn/L) for 5 wk. The planktonic groups revealed a consistent no-observed-effect concentration for the community of 75 μg Zn/L, similar to or higher than the HC5plankton , thus suggesting its protectiveness in the present study. At 300 μg Zn/L a significant reduction in cladocerans resulted in increases of rotifer, ciliate, and phytoplankton abundance. In addition, the phytoplankton community shifted in dominance from grazing-resistant to edible species. Contrary to the species sensitivity distribution (SSD) prediction, which identified phytoplankton as the most sensitive group, only the total chlorophyll and the abundance of 2 phytoplankton species were adversely affected at 300 μg Zn/L. Thus, although the HC5 estimated from the bioavailability-normalized SSD was overall protective for the plankton community, the SSD was not able to correctly predict the species sensitivity ranking within their community context at the HC50. Environ Toxicol Chem 2016;35:2698-2712. © 2016 SETAC.

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Authors+Show Affiliations

Van de Perre D
Laboratory of Environmental Toxicology and Aquatic Ecology, Environmental Toxicology Unit (GhEnToxLab), Ghent University, Gent, Belgium. Dimitri.VandePerre@Ugent.be.
Roessink I
Alterra, Wageningen University and Research Centre, Wageningen, The Netherlands.
Janssen CR
Laboratory of Environmental Toxicology and Aquatic Ecology, Environmental Toxicology Unit (GhEnToxLab), Ghent University, Gent, Belgium.
Smolders E
Division of Soil and Water Management, Katholieke Universiteit Leuven, Heverlee, Belgium.
Van Regenmortel T
Laboratory of Environmental Toxicology and Aquatic Ecology, Environmental Toxicology Unit (GhEnToxLab), Ghent University, Gent, Belgium.
Van Wichelen J
Laboratory of Protistology and Aquatic Ecology, Ghent University, Ghent, Belgium.
Vyverman W
Laboratory of Protistology and Aquatic Ecology, Ghent University, Ghent, Belgium.
Van den Brink PJ
Alterra, Wageningen University and Research Centre, Wageningen, The Netherlands. Aquatic Ecology and Water Quality Management Group, Wageningen University and Research Centre, Wageningen University, Wageningen, The Netherlands.
De Schamphelaere KA
Laboratory of Environmental Toxicology and Aquatic Ecology, Environmental Toxicology Unit (GhEnToxLab), Ghent University, Gent, Belgium.

MeSH

AnimalsFresh WaterPhytoplanktonPlanktonRisk AssessmentWater Pollutants, ChemicalZincZooplankton

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27018170

Citation

Van de Perre, Dimitri, et al. "The Effects of Zinc On the Structure and Functioning of a Freshwater Community: a Microcosm Experiment." Environmental Toxicology and Chemistry, vol. 35, no. 11, 2016, pp. 2698-2712.
Van de Perre D, Roessink I, Janssen CR, et al. The effects of zinc on the structure and functioning of a freshwater community: A microcosm experiment. Environ Toxicol Chem. 2016;35(11):2698-2712.
Van de Perre, D., Roessink, I., Janssen, C. R., Smolders, E., Van Regenmortel, T., Van Wichelen, J., Vyverman, W., Van den Brink, P. J., & De Schamphelaere, K. A. (2016). The effects of zinc on the structure and functioning of a freshwater community: A microcosm experiment. Environmental Toxicology and Chemistry, 35(11), 2698-2712. https://doi.org/10.1002/etc.3435
Van de Perre D, et al. The Effects of Zinc On the Structure and Functioning of a Freshwater Community: a Microcosm Experiment. Environ Toxicol Chem. 2016;35(11):2698-2712. PubMed PMID: 27018170.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The effects of zinc on the structure and functioning of a freshwater community: A microcosm experiment. AU - Van de Perre,Dimitri, AU - Roessink,Ivo, AU - Janssen,Colin R, AU - Smolders,Erik, AU - Van Regenmortel,Tina, AU - Van Wichelen,Jeroen, AU - Vyverman,Wim, AU - Van den Brink,Paul J, AU - De Schamphelaere,Karel A C, Y1 - 2016/06/23/ PY - 2015/11/21/received PY - 2015/12/21/revised PY - 2016/03/21/accepted PY - 2016/10/26/pubmed PY - 2017/6/14/medline PY - 2016/3/29/entrez KW - Biotic ligand model KW - Community-level effect KW - Microcosm KW - Plankton KW - Zinc SP - 2698 EP - 2712 JF - Environmental toxicology and chemistry JO - Environ Toxicol Chem VL - 35 IS - 11 N2 - A major problem with risk assessment of chemicals is the extrapolation of laboratory single-species toxicity tests, which oversimplify the actual field situation by ignoring species interactions, to natural communities. The authors tested if the bioavailability-normalized 5% hazardous concentration (HC5) estimated from chronic planktonic single-species toxicity data (HC5plankton) for zinc (Zn) is protective for a plankton community and investigated the direct and indirect effects of Zn (at HC5 and HC50) on a freshwater community's structure and function. Microcosms were exposed to 3 different Zn concentrations (background, HC5plankton = 75 μg Zn/L and HC50plankton = 300 μg Zn/L) for 5 wk. The planktonic groups revealed a consistent no-observed-effect concentration for the community of 75 μg Zn/L, similar to or higher than the HC5plankton , thus suggesting its protectiveness in the present study. At 300 μg Zn/L a significant reduction in cladocerans resulted in increases of rotifer, ciliate, and phytoplankton abundance. In addition, the phytoplankton community shifted in dominance from grazing-resistant to edible species. Contrary to the species sensitivity distribution (SSD) prediction, which identified phytoplankton as the most sensitive group, only the total chlorophyll and the abundance of 2 phytoplankton species were adversely affected at 300 μg Zn/L. Thus, although the HC5 estimated from the bioavailability-normalized SSD was overall protective for the plankton community, the SSD was not able to correctly predict the species sensitivity ranking within their community context at the HC50. Environ Toxicol Chem 2016;35:2698-2712. © 2016 SETAC. SN - 1552-8618 UR - https://www.unboundmedicine.com/medline/citation/27018170/The_effects_of_zinc_on_the_structure_and_functioning_of_a_freshwater_community:_A_microcosm_experiment_ DB - PRIME DP - Unbound Medicine ER -