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Simulation of spatial and temporal variability of chronic copper toxicity to Daphnia magna and Pseudokirchneriella subcapitata in Swedish and British surface waters

Frederik De Laender (UGent) , Karel De Schamphelaere (UGent) , Frederik Verdonck (UGent) , DG Heijerick, PA Van Sprang, Peter A Vanrolleghem and Colin Janssen (UGent)
(2005) HUMAN AND ECOLOGICAL RISK ASSESSMENT. 11(6). p.1177-1191
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Abstract
Water Quality Criteria (WQC) for metals are usually based on single species laboratory toxicity data. The influence of water characteristics of the surface waters on bioavailability to freshwater organisms is hence neglected, along with regional and temporal variability of these water characteristics. A methodology is presented to account for regional and temporal variability in the WQC setting for copper in the United Kingdom and Sweden. Bioavailability models were applied in a Monte-Carlo approach to account for temporal variability and a Geographic Information System was used to account for geographical variability on the chronic copper toxicity to Daphnia magna and Pseudokirchneriella subcapitata. Fifth percentiles of distributions of the No Observed Effect Concentration (NOEC) for both model species were derived in both study regions. For P subcapitata, it was demonstrated that this fifth percentile can vary by a factor 10 in the UK study region. The ratio of these NOEC fifth percentiles (D. magna percentile divided by P subcapitata percentile) was used to compare the ecotoxicity of copper to two model species. This ratio showed the highest variability (a factor 5) within the Swedish study region. The findings of this research stress the need for the use of region-specific WQC for copper.
Keywords
BIOTIC LIGAND MODEL, NOEC5, FIELD VALIDATION, inter-regional and intra-regional variability, SWEDEN, ORGANIC-CARBON, bioavailability models, Monte-Carlo simulation, temporal and geographical variability

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Chicago
De Laender, Frederik, Karel De Schamphelaere, Frederik Verdonck, DG Heijerick, PA Van Sprang, Peter A Vanrolleghem, and Colin Janssen. 2005. “Simulation of Spatial and Temporal Variability of Chronic Copper Toxicity to Daphnia Magna and Pseudokirchneriella Subcapitata in Swedish and British Surface Waters.” Human and Ecological Risk Assessment 11 (6): 1177–1191.
APA
De Laender, F., De Schamphelaere, K., Verdonck, F., Heijerick, D., Van Sprang, P., Vanrolleghem, P. A., & Janssen, C. (2005). Simulation of spatial and temporal variability of chronic copper toxicity to Daphnia magna and Pseudokirchneriella subcapitata in Swedish and British surface waters. HUMAN AND ECOLOGICAL RISK ASSESSMENT, 11(6), 1177–1191.
Vancouver
1.
De Laender F, De Schamphelaere K, Verdonck F, Heijerick D, Van Sprang P, Vanrolleghem PA, et al. Simulation of spatial and temporal variability of chronic copper toxicity to Daphnia magna and Pseudokirchneriella subcapitata in Swedish and British surface waters. HUMAN AND ECOLOGICAL RISK ASSESSMENT. 2005;11(6):1177–91.
MLA
De Laender, Frederik, Karel De Schamphelaere, Frederik Verdonck, et al. “Simulation of Spatial and Temporal Variability of Chronic Copper Toxicity to Daphnia Magna and Pseudokirchneriella Subcapitata in Swedish and British Surface Waters.” HUMAN AND ECOLOGICAL RISK ASSESSMENT 11.6 (2005): 1177–1191. Print.
@article{326263,
  abstract     = {Water Quality Criteria (WQC) for metals are usually based on single species laboratory toxicity data. The influence of water characteristics of the surface waters on bioavailability to freshwater organisms is hence neglected, along with regional and temporal variability of these water characteristics. A methodology is presented to account for regional and temporal variability in the WQC setting for copper in the United Kingdom and Sweden. Bioavailability models were applied in a Monte-Carlo approach to account for temporal variability and a Geographic Information System was used to account for geographical variability on the chronic copper toxicity to Daphnia magna and Pseudokirchneriella subcapitata. Fifth percentiles of distributions of the No Observed Effect Concentration (NOEC) for both model species were derived in both study regions. For P subcapitata, it was demonstrated that this fifth percentile can vary by a factor 10 in the UK study region. The ratio of these NOEC fifth percentiles (D. magna percentile divided by P subcapitata percentile) was used to compare the ecotoxicity of copper to two model species. This ratio showed the highest variability (a factor 5) within the Swedish study region. The findings of this research stress the need for the use of region-specific WQC for copper.},
  author       = {De Laender, Frederik and De Schamphelaere, Karel and Verdonck, Frederik and Heijerick, DG and Van Sprang, PA and Vanrolleghem, Peter A and Janssen, Colin},
  issn         = {1080-7039},
  journal      = {HUMAN AND ECOLOGICAL RISK ASSESSMENT},
  language     = {eng},
  number       = {6},
  pages        = {1177--1191},
  title        = {Simulation of spatial and temporal variability of chronic copper toxicity to Daphnia magna and Pseudokirchneriella subcapitata in Swedish and British surface waters},
  url          = {http://dx.doi.org/10.1080/10807030500346664},
  volume       = {11},
  year         = {2005},
}
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