![]() The negative effects of hydroelectric power production on Torrent Duck populations could be mitigated through the modification of the shape of the river channel. ![]() The hydropower intakes showed no impact on either the chemistry of the water or the composition of the macroinvertebrate community. Torrent Ducks tended to avoid the presence of high vehicular traffic roads and sections downstream of the hydropower intakes. Spatial segregation among individuals suggests the effect of territoriality. These conditions were influenced by the width and shape of the river bed. Torrent Ducks were observed in selected sections of rivers where the presence of rapids, high slopes and high water velocity occurred. The number of rapids, gradient, total flow, water velocity, relative position to hydropower intakes and abundance of conspecifics were identified as important attributes in Torrent Duck habitat preferences. Habitat variables were measured to determine the factors that influence species abundance. Monthly indices of Torrent Duck abundance and reproduction were recorded at 74 sampling points distributed along 35.4 km of river between 20. As part of a long-term study, two rivers important for hydroelectric production were surveyed in Central Chile. W.Germany by PMDC) Bent Out Of Shape (1985, Polydor K.K., P33P 50026. The Torrent Duck (Merganetta armata) inhabits the torrential rivers of the Andean mountains. Releasing eight albums during it s decade long run, the band finally came to an.
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