@article{fdi:010014707,
  title = {{I}mmediate downstream effects of the {P}etit-{S}aut dam on young neotropical fish in a large tributary of the {S}innamary river ({F}rench {G}uiana, {S}outh {A}merica)},
  author = {{P}onton, {D}ominique and {V}auchel, {P}hilippe},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he effects of artificially low runoffs in the {S}innamary river, {F}rench {G}uiana, {S}outh {A}merica, on flow patterns and on richness and abundance of young fish in {V}enus creek, one of its main downstream tributaries were examined. {A}fter {P}etit-{S}aut dam's gates were closed, the areas adjacent to this tributary were never once flooded for the entire duration of the rainy season. {T}he daily maximum averages of water speed at the tributary's mouth were found to be significantly increased. {Y}oung fish sampled using light-traps were less abundant and less diverse after dam closure. {Y}oung {C}haraciformes appeared to be the most affected by these flow disturbances. {T}hese findings enabled us to develop a conceptual model of the consequences of impoundment on young fish assemblages through the modifications of tributaries and associated floodplains hydrology. {B}ecause of flow reduction in the river during the first year of impoundment, young fish that previously had a tendency of being trapped in tributaries and flooded areas were then at risk of being flushed away. {T}he pattern of flow release by dam operations is known to be very different from natural flow variations. {T}he consequences for downstream tributaries will be similar to those of channelization : lack of adjacent flooding areas and higher rates of downstream water transfer. {H}ow the recovery of downstream fish assemblages will occur is discussed. ({R}{\'e}sum{\'e} d'auteur)},
  keywords = {{BARRAGE} ; {IMPACT} {SUR} {L}'{ENVIRONNEMENT} ; {REGIME} {HYDROLOGIQUE} ; {POISSON} {D}'{EAU} {DOUCE} ; {DYNAMIQUE} {DE} {POPULATION} ; {DIVERSITE} {SPECIFIQUE} ; {ABONDANCE} ; {GUYANE} {FRANCAISE} ; {SINNAMARY} {COURS} {D}'{EAU} ; {PETIT} {SAUT} {BARRAGE}},
  booktitle = {},
  journal = {{R}egulated {R}ivers : {R}esearch and {M}anagement},
  volume = {14},
  numero = {},
  pages = {227--243},
  ISSN = {0886-9375},
  year = {1998},
  DOI = {10.1002/({SICI})1099-1646(199805/06)14:3<227::{AID}-{RRR}490>3.0.{CO};2-6},
  URL = {https://www.documentation.ird.fr/hor/fdi:010014707},
}