@article{fdi:010045505,
  title = {{S}patial and temporal structure of fish assemblages in an "inverse estuary", the {S}ine {S}aloum system ({S}enegal)},
  author = {{S}imier, {M}onique and {B}lanc, {L}. and {A}liaume, {C}. and {D}iouf, {P}.{S}. and {A}lbaret, {J}ean-{J}acques},
  editor = {},
  language = {{ENG}},
  abstract = {{A}s a consequence of the {S}ahelian drought, the {S}ine {S}aloum, a large estuarine system located in {S}enegal ({W}est {A}frica), has become an "inverse estuary" since the late sixties, i.e. salinity increases upstream and reaches 100 in some places. {T}o study the fish assemblages of such a modified system, a survey was conducted in 1992, collecting fish every two months with a purse seine at eight sites spread over the three main branches of the estuary. {A} total of 73 species belonging to 35 families were identified. {E}ight species comprised 97% of the total numbers of fish. {T}he predominant species was a small clupeid, {S}ardinella maderensis, representing more than half of the total biomass and nearly 70% of the total number of fish. {T}he spatio-temporal structure of the fish assemblages was studied using the {STATIS}-{C}o{A} method, which combines the multitable approach with the correspondence analysis method. {W}hatever the season, a strong spatial organization of fish assemblages was observed, mainly related to depth and salinity. {T}hree types of assemblages were identified. {I}n shallow water areas, fish assemblages were dominated by {M}ugilidae, {G}erreidae and {C}ichlidae and were stable with time. {I}n open water areas, large fluctuations in the species composition were observed, due to the occasional presence of large schools of pelagic species: in the southern area, where salinity and water transparency were the lowest, the main species were {I}lisha africana, {B}rachydeuterus auritus and {C}hloroscombrus chrysurus, associated with a few {S}ciaenidae and {T}etraodontidae, while the poorest areas were characterized by only two dominant species, {S}. maderensis and {S}comberomorus tritor.},
  keywords = {{POISSON} ; {ESTUAIRE} ; {SALINITE} ; {STRUCTURE} {DU} {PEUPLEMENT} ; {VARIATION} {SPATIALE} ; {VARIATION} {TEMPORELLE} ; {MODELE} ; {ANALYSE} {MULTIVARIABLE} ; {SENEGAL} ; {SINE} {SALOUM} {ESTUAIRE}},
  booktitle = {},
  journal = {{E}stuarine, {C}oastal and {S}helf {S}cience},
  volume = {59},
  numero = {1},
  pages = {69--86},
  ISSN = {0272-7714},
  year = {2004},
  DOI = {10.1016/j.ecss.2003.08.002},
  URL = {https://www.documentation.ird.fr/hor/fdi:010045505},
}