Corpus ID: 133484110

Migrations de poissons vers le lac Tchad à la décrue de la plaine inondée du Nord-Cameroun. II. Comportement et rythmes d'activité des principales espèces

  title={Migrations de poissons vers le lac Tchad {\`a} la d{\'e}crue de la plaine inond{\'e}e du Nord-Cameroun. II. Comportement et rythmes d'activit{\'e} des principales esp{\`e}ces},
  author={V. B{\'e}nech and J. Quensi{\`e}re},
On precise, faute de pouvoir entierement les expliquer, les diverses structures temporelles du peuplement de poissons du Yaere en devalaison dans l'El Beid. On constate l'influence myethemerale chez toutes les especes etudiees. La variation hydrologique ou «saisonniere» s'impose comme le deuxieme facteur de variation et structure tres nettement la succession des devalaisons. L'influence de la lune est egalement precisee 

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