Accumulation of mercury by aufwuchs in Wisconsin seepage lakes: Implications for monitoring

Cope, W. Gregory; Rada, Ronald G.

Abstract:

We examined temporal variation in the total Hg content of aufwuchs (attached algae) collected from artificial substrates in 11 seepage lakes in north-central Wisconsin and its relation to the Hg content of resident yellow perch Perca flavescens from the lakes. Dry weight concentrations of Hg in aufwuchs varied temporally, as follows: summer/fall 1985 > summer 1985 > spring/summer 1986. Areal concentrations of Hg during the 1985 sampling periods were greater than concentrations during the spring/summer 1986 period, but did not differ from each other. The analyses of aufwuchs do not indicate potential accumulation of Hg in fish in these lakes.

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Article

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1003065

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Cope, W. Gregory; Rada, Ronald G.

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Upper Midwest Environmental Sciences Center

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178

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English

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Archives of Environmental Contamination and Toxicology

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pp. 172-178

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Accumulation of mercury by aufwuchs in Wisconsin seepage lakes: Implications for monitoring; 1992; Article; Journal; Archives of Environmental Contamination and Toxicology; Cope, W. Gregory; Rada, Ronald G.