Statistical models to predict the toxicity of major ions to Ceriodaphnia dubia, Daphnia magna and Pimephales promelas (fathead minnows)
Abstract
Toxicity of fresh waters with high total dissolved solids has been shown to be dependent on the specific ionic composition of the water. To provide a predictive tool to assess toxicity attributable to major ions, we tested the toxicity of over 2,900 ion solutions using the daphnids, Ceriodaphnia dubia and Daphnia magna, and fathead minnows (Pimephales promelas). Multiple logistic regression was used to relate ion composition to survival for each of the three test species. In general, relative ion toxicity was K+ > HCO3− ≈ Mg2+ > Cl− > SO42−; Na+ and Ca2+ were not significant variables in the regressions, suggesting that the toxicity of Na+ and Ca2+ salts was primarily attributable to the corresponding anion. For C. dubia and D. magna, toxicity of Cl−, SO42−, and K+ was reduced in solutions enriched with more than one cation. Final regression models showed a good quality of fit to the data (R2 = 0.767–0.861). Preliminary applications of these models to field-collected samples indicated a high degree of accuracy for the C. dubia model, while the D. magna and fathead minnow models tended to overpredict ion toxicity.
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Ca is not normally considered hazardous, but can significantly influence the overall toxicity of ash eluates.
“In the broader context, Ca is not normally considered hazardous, but can significantly influence the overall toxicity of ash eluates (e.g. its strong relationship with SO 4 2À leaching) (Mount et al. 1997;Tian et al. 2018).”
From Chemical composition of wildfire ash produced in contrasting ecosystems and its toxicity to Daphnia magna (2019) · cites this paper as Mount et al. 1997
Extreme values of pH and EC have a detrimental impact on zooplankton species.
“It is well established that extreme values of pH and EC have a detrimental impact on zooplankton species (Mount et al. 1997;Franklin et al. 2000;Silva et al. 2015).”
From Chemical composition of wildfire ash produced in contrasting ecosystems and its toxicity to Daphnia magna (2019) · cites this paper as Mount et al. 1997
Mount et al. estimated a concentration of 1000-2000 mg L-1 as the concentration of Cl- required to produce EC50 in Ceriodaphnia dubia.
“Similarly, Mount et al. (1997) estimated a concentration of 1000-2000 mg L À1 as the concentration of Cl À required to produce EC 50 in Ceriodaphnia dubia.”
From Chemical composition of wildfire ash produced in contrasting ecosystems and its toxicity to Daphnia magna (2019) · cites this paper as Mount et al. (1997)
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Harper, A. R., Santin, C., Doerr, S. H., Froyd, C. A., Albini, D., Otero, X. L., Viñas, L., & Pérez-Fernández, B. (2019) · International Journal of Wildland Fire · doi:10.1071/wf18200 · Cited by 108 · see citing works
Aquatic ecotoxicity of ashes from Brazilian savanna wildfires
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- Authors
- Mount, D. R., Gulley, D. D., Hockett, J. R., Garrison, T. D., & Evans, J. M.
- Affiliations
- Environmental Protection Agency (US)
- University of Wyoming (US)
- ENSR Consulting and Engineering, Fort Collins, Colorado 80521, USA
- Gas Research Institute, Chicago, Illinois 60631, USA
- Corresponding author
- Mount, David R
- ORCID
- Mount, David R
- Venue
- Environmental Toxicology and Chemistry
- Publisher
- Oxford University Press (OUP)
- Published
- 1997-10-01
- Volume
- 16
- Issue
- 10
- Pages
- 2009-2019
- ISSN
- 0730-7268 (ISSN-L)
- 1552-8618
- OpenAlex
- W2097363884
- Cited by
- 282
- References
- 16
- Citations by year
- 2026: 7 · 2025: 4 · 2024: 11 · 2023: 8 · 2022: 22 · 2021: 6 · 2020: 21 · 2019: 13 · 2018: 21 · 2017: 16 · 2016: 17 · 2015: 14 · 2014: 19 · 2013: 13 · 2012: 11
- FWCI
- 2.80
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Environmental Toxicology and Chemistry (publishedVersion)
- Topics
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Environmental Toxicology and Ecotoxicology
- Physical Sciences › Environmental Science › Water Science and Technology › Water Quality and Resources Studies
- Physical Sciences › Environmental Science › Ecology › Crustacean biology and ecology
- Keywords
- major ions, ion toxicity, total dissolved solids, freshwater ecotoxicity, Ceriodaphnia dubia, Daphnia magna, fathead minnow, survival prediction, multivariate logistic regression, cation-anion interactions, chloride, sulfate, potassium, bicarbonate, magnesium, sodium, calcium, water quality assessment
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