Abstract
Montane streams often intercept and run parallel to roads and highways where road deicer is seasonally applied for snow and ice removal. This research used stream mesocosms to evaluate the effects of MgCl2 road deicer to a Rocky Mountain stream benthic community in Colorado, USA. Measured responses included macroinvertebrate drift, community composition metrics, and macroinvertebrate biomass after a 10-day exposure. Natural benthic communities were exposed to concentrations of liquid MgCl2 road deicer that bracketed the U.S. Environmental Protection Agency (U.S. EPA) surface water chronic chloride ‘aquatic life criteria’ (230 mg Cl−/l). Results showed no effects on macroinvertebrate drift, but significant reductions in abundance, taxa richness, and community biomass. Specifically, stonefly (Plecoptera) and mayfly (Ephemeroptera) abundance decreased at Cl− concentrations below the U.S. EPA chronic chloride water quality standard, and at concentrations substantially lower than those generated from traditional laboratory toxicity tests. However, caddisflies (Trichoptera), midges (Chironomidae) and other dipterans were tolerant to all MgCl2 treatments. We conclude that MgCl2 road deicer has the potential to impair montane stream benthic communities at relatively low ionic concentrations, and regulatory agencies should manage for and establish regionally appropriate application rates for this stressor.



Similar content being viewed by others
References
Amrhein, C., J. E. Strong & P. A. Mosher, 1992. Effect of deicing salts on metal and organic matter mobilization in roadside soils. Environmental Science & Technology 26: 703–709.
ANZECC (Australian and New Zealand Environment and Conservation Council), 2000. Australian and New Zealand Guidelines for Fresh and Marine Water Quality. ANZECC, Canberra.
APHA (American Public Health Association), 1989. Standard Methods for the Examination of Water and Wastewater. APHA, Washington, D.C.
Bastviken, D., P. Sandén, T. Svensson, C. Ståhlberg, M. Magounakis & G. Öberg, 2006. Chloride retention and release in a boreal forest soil: effects of soil water residence time and nitrogen and chloride loads. Environmental Science & Technology 40: 2977–2982.
Benbow, M. E. & R. W. Merritt, 2004. Road-salt toxicity of select Michigan wetland macroinvertebrates under different testing conditions. Wetlands 24: 68–76.
Blasius, B. & R. Merritt, 2002. Field and laboratory investigations on the effects of road salt (NaCl) on stream macroinvertebrate communities. Environmental Pollution 120: 219–231.
Cairns Jr., J., 1983. Are single species toxicity tests alone adequate for estimating environmental hazard? Hydrobiologia 100: 47–57.
Cañedo-Argüelles, M., C. Hawkins, B. Kefford, R. Schäfer, B. Dyack, S. Brucet, D. Buchwalter, J. Dunlop, O. Frör & J. Lazorchak, 2016. Saving freshwater from salts. Science 351: 914–916.
Carlisle, D. M. & W. H. Clements, 2005. Leaf litter breakdown, microbial respiration and shredder production in metal-polluted streams. Freshwater Biology 50: 380–390.
CCME (Canadian Council of Ministries of the Environment), 1999. Canadian water quality guidelines for the protection of aquatic life: Salinity. In Canadian environmental quality guidelines. CCME, Winnipeg.
Clark, J. L. & W. H. Clements, 2006. The use of in situ and stream microcosm experiments to assess population-and community-level responses to metals. Environmental Toxicology and Chemistry 25: 2306–2312.
Clements, W. H., 1994. Benthic invertebrate community responses to heavy metals in the Upper Arkansas River Basin, Colorado. Journal of the North American Benthological Society 13: 30–44.
Clements, W. H., 2004. Small-scale experiments support causal relationships between metal contamination and macroinvertebrate community responses. Ecological Applications 14: 954–967.
Clements, W. H. & C. Kotalik, 2016. Effects of major ions on natural benthic communities: an experimental assessment of the US Environmental Protection Agency aquatic life benchmark for conductivity. Freshwater Science 35: 126–138.
Clements, W. H., D. S. Cherry & J. Cairns, 1988. Structural alterations in aquatic insect communities exposed to copper in laboratory streams. Environmental Toxicology and Chemistry 7: 715–722.
Clements, W. H., C. W. Hickey & K. A. Kidd, 2012. How do aquatic communities respond to contaminants? It depends on the ecological context. Environmental Toxicology and Chemistry 31: 1932–1940.
Clements, W. H., P. Cadmus & S. F. Brinkman, 2013. Responses of aquatic insects to Cu and Zn in stream microcosms: understanding differences between single species tests and field responses. Environmental Science & Technology 47: 7506–7513.
Colorado Department of Public Health and Environment (CDPHE), 2011. The basic standards and methodologies for surface water. Regulation no. 31 5 CCR 1002-31. CDPHE, Water quality control commission, Denver, Colorado.
Cooper, C. A., P. M. Mayer & B. R. Faulkner, 2014. Effects of road salts on groundwater and surface water dynamics of sodium and chloride in an urban restored stream. Biogeochemistry 121: 149–166.
Cormier, S. M., G. W. Suter & L. Zheng, 2013. Derivation of a benchmark for freshwater ionic strength. Environmental Toxicology and Chemistry 32: 263–271.
Corsi, S. R., D. J. Graczyk, S. W. Geis, N. L. Booth & K. D. Richards, 2010. A fresh look at road salt: aquatic toxicity and water-quality impacts on local, regional, and national scales. Environmental Science & Technology 44: 7376–7382.
Crowther, R. & H. Hynes, 1977. The effect of road deicing salt on the drift of stream benthos. Environmental Pollution (1970) 14: 113–126.
Cuffney, T. F., R. A. Brightbill, J. T. May & I. R. Waite, 2010. Responses of benthic macroinvertebrates to environmental changes associated with urbanization in nine metropolitan areas. Ecological Applications 20: 1384–1401.
Cunningham, M. A., E. Snyder, D. Yonkin, M. Ross & T. Elsen, 2008. Accumulation of deicing salts in soils in an urban environment. Urban Ecosystems 11: 17–31.
De Mendiburu, F., 2014. Agricolae: Statistical procedures for agricultural research. R Package Version 1: 1–6.
Demers, C. L. & R. W. Sage Jr., 1990. Effects of road deicing salt on chloride levels in four Adirondack streams. Water, Air, and Soil Pollution 49: 369–373.
Environment Canada, 2004. Code of practice for the environmental management of road salts. EPS 1/CC/5.
Erickson, R. J., D. R. Mount, T. L. Highland, J. R. Hockett, D. J. Hoff, C. T. Jenson, T. J. Norberg-King & K. N. Peterson, 2016. The acute toxicity of major ion salts to Ceriodaphnia dubia. II. Empirical relationships in binary salt mixtures. Environmental Toxicology and Chemistry 9999: 1–13.
Fay, L. & X. Shi, 2012. Environmental impacts of chemicals for snow and ice control: state of the knowledge. Water, Air, & Soil Pollution 223: 2751–2770.
Findlay, S. E. & V. R. Kelly, 2011. Emerging indirect and long-term road salt effects on ecosystems. Annals of the New York Academy of Sciences 1223: 58–68.
Fleeger, J. W., K. R. Carman & R. M. Nisbet, 2003. Indirect effects of contaminants in aquatic ecosystems. Science of the Total Environment 317: 207–233.
Fox, J., M. Ash, T. Boye, S. Calza, A. Chang, P. Grosjean, R. Heiberger, G. Kerns, R. Lancelot & M. Lesnoff, 2007. Rcmdr: R commander. R Package Version: 1.3—11.
Goodrich, B. A., R. D. Koski & W. R. Jacobi, 2009. Condition of soils and vegetation along roads treated with magnesium chloride for dust suppression. Water, Air, and Soil Pollution 198: 165–188.
Griffith, M. B., 2014. Natural variation and current reference for specific conductivity and major ions in wadeable streams of the conterminous USA. Freshwater Science 33: 1–17.
Hart, B. T., P. Bailey, R. Edwards, K. Hortle, K. James, A. McMahon, C. Meredith & K. Swadling, 1991. A review of the salt sensitivity of the Australian freshwater biota. Hydrobiologia 210: 105–144.
Howard, K. W. & J. Haynes, 1993. Groundwater contamination due to road de-icing chemicals—salt balance implications. Geoscience Canada 20: 1–8.
Jackson, R. B. & E. G. Jobbagy, 2005. From icy roads to salty streams. Proceedings of the National Academy of Sciences of the United States of America 102: 14487–14488.
Kaushal, S. S., P. M. Groffman, G. E. Likens, K. T. Belt, W. P. Stack, V. R. Kelly, L. E. Band & G. T. Fisher, 2005. Increased salinization of fresh water in the northeastern United States. Proceedings of the National Academy of Sciences of the United States of America 102: 13517–13520.
Kefford, B. J., D. Nugegoda, L. Zalizniak, E. J. Fields & K. L. Hassell, 2007. The salinity tolerance of freshwater macroinvertebrate eggs and hatchlings in comparison to their older life-stages: a diversity of responses. Aquatic Ecology 41: 335–348.
Kefford, B. J., G. L. Hickey, A. Gasith, E. Ben-David, J. E. Dunlop, C. G. Palmer, K. Allan, S. C. Choy & C. Piscart, 2012. Global scale variation in the salinity sensitivity of riverine macroinvertebrates: eastern Australia, France, Israel and South Africa. PLoS ONE 7(5): e35224.
Kiffney, P. M. & W. H. Clements, 1994. Effects of heavy metals on a macroinvertebrate assemblage from a Rocky Mountain stream in experimental microcosms. Journal of the North American Benthological Society 13: 511–523.
Kiffney, P. M. & W. H. Clements, 1996. Effects of metals on stream macroinvertebrate assemblages from different altitudes. Ecological Applications 6: 472–481.
Lewis, W. M. & W. E. Analysts, 1999. Studies of environmental effects of magnesium chloride deicer in Colorado. Colorado Department of Transportation, Research Branch.
Martínez-Jerónimo, F. & L. Martínez-Jerónimo, 2007. Chronic effect of NaCl salinity on a freshwater strain of Daphnia magna Straus (Crustacea: Cladocera): a demographic study. Ecotoxicology and Environmental Safety 67: 411–416.
Mount, D. R., R. J. Erickson, T. L. Highland, J. R. Hockett, D. J. Hoff, C. T. Jenson, T. J. Norberg-King, K. N. Peterson, Z. M. Polaske & S. Wisniewski, 2016. The acute toxicity of major ion salts to Ceriodaphnia dubia: I. Influence of background water chemistry. Environmental Toxicology and Chemistry 35: 3039–3057.
Pond, G. J., M. E. Passmore, F. A. Borsuk, L. Reynolds & C. J. Rose, 2008. Downstream effects of mountaintop coal mining: comparing biological conditions using family-and genus- level macroinvertebrate bioassessment tools. Journal of the North American Benthological Society 27: 717–737.
R Core Team, 2012. R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing, Vienna.
Ramakrishna, D. M. & T. Viraraghavan, 2005. Environmental impact of chemical deicers–a review. Water, Air, & Soil Pollution 166: 49–63.
Sarma, S., S. Nandini, J. Morales-Ventura, I. Delgado-Martínez & L. González-Valverde, 2006. Effects of NaCl salinity on the population dynamics of freshwater zooplankton (rotifers and cladocerans). Aquatic Ecology 40: 349–360.
Soucek, D. & A. Dickinson, 2015. Full-life chronic toxicity of sodium salts to the mayfly Neocloeon triangulifer in tests with laboratory cultured food. Environmental Toxicology and Chemistry 34: 2126–2137.
TRB (Transportation Research Board), 2007. Guidelines for Selection of Snow and Ice Control Materials to Mitigate Environmental Impacts. NCHRP Report 577. Washington, D.C.
USEPA (United States Environmental Protection Agency), 1988. Ambient aquatic life water quality criteria for chloride. EPA 440/5—88—001. USEPA, Washington, D.C.
Williams, D. D., N. E. Williams & Y. Cao, 2000. Road salt contamination of groundwater in a major metropolitan area and development of a biological index to monitor its impact. Water Research 34: 127–138.
Xie, L., D. H. Funk & D. B. Buchwalter, 2010. Trophic transfer of Cd from natural periphyton to the grazing mayfly Centroptilum triangulifer in a life cycle test. Environmental Pollution 158: 272–277.
Zehetner, F., U. Rosenfellner, A. Mentler & M. H. Gerzabek, 2009. Distribution of road salt residues, heavy metals and polycyclic aromatic hydrocarbons across a highway-forest interface. Water, Air, and Soil Pollution 198: 125–132.
Acknowledgements
We thank Nicole Vieira and Adam Herdrich for logistical support during this study. David Rees and Timberline Aquatics, Inc. provided taxonomic assistance in identifying macroinvertebrates, and Stephen Brinkman at Colorado Parks and Wildlife Aquatic Toxicology Laboratory assisted with water chemistry analyses. Special thanks to Colorado Department of Transportation which provided the liquid road deicer used in the study. Comments by Sam Duggan and 3 anonymous reviewers are greatly appreciated. Funding for this study was provided by the U.S. Geological Survey (G13AC00384). Views expressed in this manuscript are not necessarily those of the USGS, Timberline Aquatics, Inc., Colorado Parks and Wildlife, or the Colorado Department of Transportation.
Author information
Authors and Affiliations
Corresponding author
Additional information
Handling editor: Marcello Moretti
Electronic supplementary material
Below is the link to the electronic supplementary material.
Rights and permissions
About this article
Cite this article
Kotalik, C.J., Clements, W.H. & Cadmus, P. Effects of magnesium chloride road deicer on montane stream benthic communities. Hydrobiologia 799, 193–202 (2017). https://doi.org/10.1007/s10750-017-3212-5
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10750-017-3212-5


