@article{fdi:31211,
  title = {{E}cological zonation of the hyperhaline estuary of the {C}asamance river ({S}enegal) : {F}oraminifera, zooplanktoon and abiotic variables},
  author = {{D}ebenay, {J}.{P}. and {P}ag{\`e}s, {J}ean and {D}iouf, {P}.{S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{D}ue to a long-lasting drought afflicting the {S}ahel, the {C}asamance {R}iver has been transformed into a hyperhaline estuary, with salinities up to 170 °/°° at a distance of 210 km from the sea. {F}oraminifera and zooplankton populations both show a marked decrease in the number of species in increasingly confined water, the distribution of species being closely related to the evolution ofabiotic variables. {O}ur three-prong study allowed us to identify six zones, upwards from the sea. {T}he uppermost ones are characterized by drastic conditions which considerably reduce the number of species. {T}herefore, the populations of {F}oraminifera, zooplankton and even fish become oligo or mono specific. {T}he {C}asamance river appears to fit quite well into the general rules concerning hyperhaline environments. {H}owever, it shows some peculiar features which are : the large dimensions of the hyperhaline estuary (over 230 km long and over 5 km wide in the lower course); peak salinities among the highest known for a permanently open estuary (up to 170°/°°); and water remaining trapped inside the river for several years. ({R}{\'e}sum{\'e} d'auteur)},
  keywords = {{ESTUAIRE} ; {SALINITE} ; {ZOOPLANCTON} ; {INVENTAIRE} {FAUNISTIQUE} ; {ZONATION} {ECOLOGIQUE} ; {FACTEUR} {ABIOTIQUE} ; {MILIEU} {HYPERHALIN} ; {SENEGAL} ; {CASAMANCE} {COURS} {D}'{EAU}},
  booktitle = {},
  journal = {{H}ydrobiologia},
  volume = {174},
  numero = {},
  pages = {161--176},
  ISSN = {0018-8158},
  year = {1989},
  URL = {https://www.documentation.ird.fr/hor/fdi:31211},
}