2008
DOI: 10.1590/s1519-69842008000500019
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Dams and the fish fauna of the Neotropical region: impacts and management related to diversity and fisheries

Abstract: Reservoirs have been built in almost all of the hydrographic basins of Brazil. Their purposes include water supply for cities, irrigation and mainly, generation of electricity. There are more than 700 large dams and associated reservoirs in the large rivers of the country. These reservoirs favor local and regional economic development, but they also bring serious and irreversible alterations in the natural hydrologic regime of rivers, affecting habitat quality and the dynamics of the biota. In the impounded ar… Show more

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Cited by 635 publications
(612 citation statements)
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References 40 publications
(54 reference statements)
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“…Habitats in reservoirs vary longitudinally, allowing the division of three distinct zones: riverine, transitional and lacustrine (Thornton et al 1990). Studies on the fish assemblages in reservoirs suggest that transitional zone, which is an ecotone between the river upstream and the lacustrine zone of the reservoir, is important for the management of reservoirs (Carvalho et al 1998;Oliveira et al 2004Oliveira et al , 2005Agostinho et al 2008). The transitional zone has relatively higher fish density and diversity than others possibly by reason of its higher light penetration and primary productivity (Carvalho et al 1998;Oliveira et al 2004;Santos et al 2010;Terra et al 2010).…”
mentioning
confidence: 99%
“…Habitats in reservoirs vary longitudinally, allowing the division of three distinct zones: riverine, transitional and lacustrine (Thornton et al 1990). Studies on the fish assemblages in reservoirs suggest that transitional zone, which is an ecotone between the river upstream and the lacustrine zone of the reservoir, is important for the management of reservoirs (Carvalho et al 1998;Oliveira et al 2004Oliveira et al , 2005Agostinho et al 2008). The transitional zone has relatively higher fish density and diversity than others possibly by reason of its higher light penetration and primary productivity (Carvalho et al 1998;Oliveira et al 2004;Santos et al 2010;Terra et al 2010).…”
mentioning
confidence: 99%
“…After damming, most rheophilic species disappear and those that persist are confined upstream and in the mouth of tributaries, where the habitat conditions are more similar to the original (Agostinho et al, 2008). The new environment is colonised largely by those species with pre-adaptations for the lentic condition (Fernando & Holcik, 1991) and those with opportunistic strategies.…”
Section: Introductionmentioning
confidence: 99%
“…2000; Agostinho et al. 2008). Given the complex nature of the interactions involved, the consequences of disturbance can be dynamic and difficult to predict (Lake et al.…”
Section: Introductionmentioning
confidence: 99%