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Riverine macroinvertebrate responses to chlorine and chlorinated sewage effluents - acute chlorine tolerances of <i>Baetis harrisoni</i> (Ephemeroptera) from two rivers in KwaZulu-Natal, South Africa


ML Williams
CG Palmer
AK Gordon

Abstract

Chlorine is widely used in South African sewage treatment works, and despite its volatility is likely to have a considerable impact on riverine ecosystems. This paper considers the results of acute (96 h) toxicity responses to chlorine of riverine mayfly nymphs Baetis harrisoni collected from the small, relatively uncontaminated suburban Westville Stream, KwaZulu-Natal and from the more severely impacted Umbilo River, which flows through the industrial area of Pinetown, KwaZulu-Natal, South Africa. The 96 h LC50

WaterSA Vol.29(4) 2003: 483-488

Journal Identifiers


eISSN: 1816-7950
print ISSN: 0378-4738