publication . Article . Other literature type . 1998

Immediate downstream effects of the Petit‐Saut dam on young neotropical fish in a large tributary of the Sinnamary River (French Guiana, South America)

Dominique Ponton; Vauchel, P.;
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  • Published: 01 Jan 1998 Journal: Regulated Rivers: Research & Management, volume 14, pages 227-243 (issn: 0886-9375, eissn: 1099-1646, Copyright policy)
  • Publisher: Wiley
  • Country: Sri Lanka
Abstract
The effects of artificially low runoffs in the Sinnamary river, French Guiana, South America, on flow patterns and on richness and abundance of young fish in Venus creek, one of its main downstream tributaries were examined. After Petit-Saut dam's gates were closed, the areas adjacent to this tributary were never once flooded for the entire duration of the rainy season. The daily maximum averages of water speed at the tributary's mouth were found to be significantly increased. Young fish sampled using light-traps were less abundant and less diverse after dam closure. Young Characiformes appeared to be the most affected by these flow disturbances. These findings ...
Subjects
free text keywords: BARRAGE, IMPACT SUR L'ENVIRONNEMENT, REGIME HYDROLOGIQUE, POISSON D'EAU DOUCE, DYNAMIQUE DE POPULATION, DIVERSITE SPECIFIQUE, ABONDANCE, General Environmental Science
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publication . Article . Other literature type . 1998

Immediate downstream effects of the Petit‐Saut dam on young neotropical fish in a large tributary of the Sinnamary River (French Guiana, South America)

Dominique Ponton; Vauchel, P.;