The combined and interactive effects of zinc, temperature, and phosphorus on the structure and functioning of a freshwater community

Dimitri Van de Perre, Ivo Roessink, Colin R. Janssen, Erik Smolders, Frederik De Laender, Paul J. Van den Brink, Karel A.C. De Schamphelaere

Research output: Contribution to journalArticle

Abstract

Ecotoxicological studies mainly consist of single-species experiments evaluating the effects of a single stressor. However, under natural conditions aquatic communities are exposed to a mixture of stressors. The present study aimed to identify how the toxicity of zinc (Zn) is affected by increased temperature and increased phosphorus (P) supply and how these interactions vary among species, functional groups, and community structure and function. Aquatic microcosms were subjected to 3 Zn concentrations (background, no Zn added, and 75 and 300 μg Zn/L), 2 temperatures (16–19 and 21–24 °C), and 2 different P additions (low, 0.02, and high, 0.4 mg P L−1 wk−1) for 5 wk using a full factorial design. During the study, consistent interactions between Zn and temperature were only rarely found at the species level (4%), but were frequently found at the functional group level (36%), for community structure (100%) and for community function (100%; such as dissolved organic carbon concentrations and total chlorophyll). The majority of the Zn × temperature interactions were observed at 300 μg Zn/L and generally indicated a smaller effect of Zn at higher temperature. Furthermore, no clear indication was found that high P addition by itself significantly affected the overall effects of Zn on the community at any level of organization. Interestingly, though, 90% of all the Zn × temperature interactions observed at the species, group, and community composition level were found under high P addition. Collectively, the results of our study with the model chemical Zn suggest that temperature and phosphorus loading to freshwater systems should be accounted for in risk assessment, because these factors may modify the effects of chemicals on the structure and functioning of aquatic communities, especially at higher levels of biological organization. Environ Toxicol Chem 2018;37:2413–2427.

Original languageEnglish
Pages (from-to)2413-2427
Number of pages15
JournalEnvironmental Toxicology and Chemistry
Volume37
Issue number9
DOIs
Publication statusPublished - 1 Sep 2018

Fingerprint

Fresh Water
Phosphorus
Zinc
zinc
phosphorus
Temperature
temperature
aquatic community
Functional groups
functional group
community structure
effect
Chemical Models
Chlorophyll
Organic carbon
Risk assessment
microcosm
dissolved organic carbon
community composition
Toxicity

Keywords

  • Climate change
  • Community-level effects
  • Ecotoxicology
  • Freshwater toxicology
  • Metal toxicity
  • Plankton
  • Zinc

Cite this

Van de Perre, Dimitri ; Roessink, Ivo ; Janssen, Colin R. ; Smolders, Erik ; De Laender, Frederik ; Van den Brink, Paul J. ; De Schamphelaere, Karel A.C. / The combined and interactive effects of zinc, temperature, and phosphorus on the structure and functioning of a freshwater community. In: Environmental Toxicology and Chemistry. 2018 ; Vol. 37, No. 9. pp. 2413-2427.
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The combined and interactive effects of zinc, temperature, and phosphorus on the structure and functioning of a freshwater community. / Van de Perre, Dimitri; Roessink, Ivo; Janssen, Colin R.; Smolders, Erik; De Laender, Frederik; Van den Brink, Paul J.; De Schamphelaere, Karel A.C.

In: Environmental Toxicology and Chemistry, Vol. 37, No. 9, 01.09.2018, p. 2413-2427.

Research output: Contribution to journalArticle

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AB - Ecotoxicological studies mainly consist of single-species experiments evaluating the effects of a single stressor. However, under natural conditions aquatic communities are exposed to a mixture of stressors. The present study aimed to identify how the toxicity of zinc (Zn) is affected by increased temperature and increased phosphorus (P) supply and how these interactions vary among species, functional groups, and community structure and function. Aquatic microcosms were subjected to 3 Zn concentrations (background, no Zn added, and 75 and 300 μg Zn/L), 2 temperatures (16–19 and 21–24 °C), and 2 different P additions (low, 0.02, and high, 0.4 mg P L−1 wk−1) for 5 wk using a full factorial design. During the study, consistent interactions between Zn and temperature were only rarely found at the species level (4%), but were frequently found at the functional group level (36%), for community structure (100%) and for community function (100%; such as dissolved organic carbon concentrations and total chlorophyll). The majority of the Zn × temperature interactions were observed at 300 μg Zn/L and generally indicated a smaller effect of Zn at higher temperature. Furthermore, no clear indication was found that high P addition by itself significantly affected the overall effects of Zn on the community at any level of organization. Interestingly, though, 90% of all the Zn × temperature interactions observed at the species, group, and community composition level were found under high P addition. Collectively, the results of our study with the model chemical Zn suggest that temperature and phosphorus loading to freshwater systems should be accounted for in risk assessment, because these factors may modify the effects of chemicals on the structure and functioning of aquatic communities, especially at higher levels of biological organization. Environ Toxicol Chem 2018;37:2413–2427.

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