Diversité, distribution et abondance du microbenthos
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Diversité, distribution et abondance du microbenthos

Diversité, distribution et abondance du microbenthos


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About the Book

Cette étude porte sur la distribution et l'abondance du macrobenthos dans les rivières nigérianes, en particulier la rivière Calabar, en se concentrant sur la façon dont les facteurs environnementaux et biologiques influencent ces communautés. Un total de 505 espèces a été collecté à travers sept taxons principaux, avec une densité moyenne globale de 251±53,73 individus. La classe Insecta était la plus abondante, représentant 43,63% du total, suivie par Gastropoda et Echinodermata. En utilisant la microscopie électronique pour l'identification, les analyses statistiques ont révélé un indice de diversité de Simpson de 1,58±0,04 et un indice de diversité de Shannon de 0,74±0,01. Les paramètres physiochimiques clés comprenaient un pH de 8,51±2,06, une salinité de 7,7±0,31, une température moyenne de 25,15±0,5 et un taux d'oxygène dissous de 6,7±0,28. Les résultats indiquent que la qualité de l'eau est favorable à une gamme variée d'espèces, soulignant la nécessité d'une salinité équilibrée et d'une bonne oxygénation pour maintenir la biodiversité dans les systèmes estuariens. Une surveillance régulière de la qualité de l'eau est essentielle pour détecter rapidement la pollution, et la mise en oeuvre de stratégies de gestion des déchets peut contribuer à réduire les charges organiques dans la rivière.


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Product Details
  • ISBN-13: 9786208806880
  • Publisher: Editions Notre Savoir
  • Publisher Imprint: Editions Notre Savoir
  • Height: 229 mm
  • No of Pages: 56
  • Returnable: N
  • Weight: 141 gr
  • ISBN-10: 6208806887
  • Publisher Date: 31 Mar 2025
  • Binding: Paperback
  • Language: French
  • Returnable: N
  • Spine Width: 3 mm
  • Width: 152 mm


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