Heavy metal contamination in an urban stream fed by contaminated air-conditioning and stormwater discharges |
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Authors: | O'Sullivan Aisling Wicke Daniel Cochrane Tom |
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Institution: | (1) University of Canterbury, Christchurch, Canterbury, New Zealand |
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Abstract: | Purpose Urban waterways are impacted by diffuse stormwater runoff, yet other discharges can unintentionally contaminate them. The
Okeover stream in Christchurch, New Zealand, receives air-conditioning discharge, while its ephemeral reach relies on untreated
stormwater flow. Despite rehabilitation efforts, the ecosystem is still highly disturbed. It was assumed that stormwater was
the sole contamination source to the stream although water quality data were sparse. We therefore investigated its water and
sediment quality and compared the data with appropriate ecotoxicological thresholds from all water sources. |
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Keywords: | |
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