Papers by Jenifer McIntyre
Chemosphere, Jan 6, 2015
Green stormwater infrastructure (GSI), or low impact development, encompasses a diverse and expan... more Green stormwater infrastructure (GSI), or low impact development, encompasses a diverse and expanding portfolio of strategies to reduce the impacts of stormwater runoff on natural systems. Benchmarks for GSI success are usually framed in terms of hydrology and water chemistry, with reduced flow and loadings of toxic chemical contaminants as primary metrics. Despite the central goal of protecting aquatic species abundance and diversity, the effectiveness of GSI treatments in maintaining diverse assemblages of sensitive aquatic taxa has not been widely evaluated. In the present study we characterized the baseline toxicity of untreated urban runoff from a highway in Seattle, WA, across six storm events. For all storms, first flush runoff was toxic to the daphniid Ceriodaphnia dubia, causing up to 100% mortality or impairing reproduction among survivors. We then evaluated whether soil media used in bioretention, a conventional GSI method, could reduce or eliminate toxicity to juvenile c...
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The Science of the total environment, 2014
Urban stormwater contains a complex mixture of contaminants that can be acutely toxic to aquatic ... more Urban stormwater contains a complex mixture of contaminants that can be acutely toxic to aquatic biota. Green stormwater infrastructure (GSI) is a set of evolving technologies intended to reduce impacts on natural systems by slowing and filtering runoff. The extent to which GSI methods work as intended is usually assessed in terms of water quantity (hydrology) and quality (chemistry). Biological indicators of GSI effectiveness have received less attention, despite an overarching goal of protecting the health of aquatic species. Here we use the zebrafish (Danio rerio) experimental model to evaluate bioinfiltration as a relatively inexpensive technology for treating runoff from an urban highway with dense motor vehicle traffic. Zebrafish embryos exposed to untreated runoff (48-96h; six storm events) displayed an array of developmental abnormalities, including delayed hatching, reduced growth, pericardial edema, microphthalmia (small eyes), and reduced swim bladder inflation. Three of ...
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Transactions of the American Fisheries Society, 2009
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Transactions of the American Fisheries Society, 2006
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Science of The Total Environment, 2007
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Journal of Biomolecular Techniques : JBT, 2014
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Environmental Toxicology and Chemistry, 2009
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Environmental Science & Technology, 2008
Dissolved copper is an important nonpoint source pollutant in aquatic ecosystems worldwide. Coppe... more Dissolved copper is an important nonpoint source pollutant in aquatic ecosystems worldwide. Copper is neurotoxic to fish and is specifically known to interfere with the normal function of the peripheral olfactory nervous system. However,the influence of water chemistry on the bioavailability and toxicity of copper to olfactory sensory neurons is not well understood. Here we used electrophysiological recordings from the olfactory epithelium of juvenile coho salmon (Oncorhynchus kisutch) to investigate the impacts of copper in freshwaters with different chemical properties. In low ionic strength artificial fresh water, a short-term (30 min) exposure to 20 microg/L dissolved copper reduced the olfactory response to a natural odorant (10(-5) M L-serine) by 82%. Increasing water hardness (0.2-1.6 mM Ca) or alkalinity (0.2-3.2 mM HCO3-) only slightly diminished the inhibitory effects of copper. Moreover, the loss of olfactory function was not affected by a change in pH from 8.6 to 7.6. By contrast, olfactory capacity was partially restored by increasing dissolved organic carbon (DOC; 0.1-6.0 mg/L). Given the range of natural water quality conditions in the western United States, water hardness and alkalinity are unlikelyto protect threatened or endangered salmon from the sensory neurotoxicity of copper. However, the olfactory toxicity of copper may be partially reduced in surface waters that have a high DOC content.
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Ecological Applications, 2012
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Bulletin of Environmental Contamination and Toxicology, 2004
... Temperature С pH Dissolved oxygen (mg/L) Treatment Av Min Max Av Min Max Av Min Max Control R... more ... Temperature С pH Dissolved oxygen (mg/L) Treatment Av Min Max Av Min Max Av Min Max Control R-11 12.77 12.29 11.5 11.4 13.6 13.3 6.6 6.6 6.4 6.5 6.7 6.8 9.20 8.11 7.85 5.95 11.50 9.37 Control LI 700 12.03 12.01 10.3 10.8 13.0 12.9 6.4 6.3 6.2 6.0 6.7 6.5 8.81 8.67 8.00 ...
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PLoS ONE, 2011
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Papers by Jenifer McIntyre