ABSTRACT. Zooplankton community responses to the impoundment of Dona Francisca reservoir, Rio Grande do Sul, Brazil. We investigated the changes in species richness, density and composition of the zooplankton community in response to the formation of a reservoir in the area of the Dona Francisca hydroelectric plant. Zooplankton samples were collected quarterly over four years, comprising two years before and two years after the formation of the reservoir. Species richness and density of Cladocera, Copepoda an…
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