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The use of an aeration system to prevent thermal stratification of a freshwater impoundment and its effect on downstream fish assemblages

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Warm-water riverine fish assemblages were investigated downstream of an impoundment before and after thermal stratification and the associated cold-water pollution was prevented using an aeration system. Temperatures below the dam significantly increased after installation of the aeration system and this correlated with an increased abundance and greater number of species downstream. Overall, aeration appeared to be beneficial for both the lake (upstream) and the downstream riverine environments.

Keywords: cold-water pollution; diadromy; hypolimnion; migration; thermocline

Document Type: Research Article


Affiliations: Australian National Centre for Ocean Resources & Security (ANCORS), University of Wollongong, NSW 2522, Australia

Publication date: 2011-03-01

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