English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

L’impact des pressions anthropiques sur les ecosystemes aquatiques du bassin cotonnier du Benin a ete evalue d’octobre a decembre 2012. L’objectif est de determiner la qualite ecologique des ruisseaux du bassin de la riviere Alibori par l’etude des peuplements de macroinvertebres. Au moyen d’un filet troubleau, les macroinvertebres ont ete echantillonnes dans 12 stations reparties dans les ruisseaux du bassin moyen de la riviere. L’inventaire de la macrofaune benthique recoltee a permis de disposer de 25 especes d’invertebres aquatiques appartenant a 16 familles et 7 ordres. Ils sont constitues de trois classes qui sont les Insectes (5 ordres, 12 familles et 20 especes), les Gasteropodes (1 ordre, 3 familles et 4 especes) et les Lamellibranches (Bivalves) (1 ordre, 1 famille et 1 espece). L’analyse de la structure de la communaute des taxons grâce a SOM sur la base de la matrice de presence-absence a revele une repartition spatiale indiquant que les differentes stations ont eu en commun une grande partie de la faune benthique mais se sont differenciees par un nombre limite de taxons qui ont caracterise chaque station. Six parametres environnementaux ont discrimine cette repartition observee. L’abondance de certains groupes benthiques comme les Dipteres et les Coleopteres dans les ruisseaux montre que le bassin cotonnier du Benin est soumis aux perturbations anthropiques. © 2016 International Formulae Group. All rights reserved. Mots cles: Macroinvertebres benthiques, riviere Alibori, ruisseaux, perturbations English Title: Assessment of the quality of streams water in the middle course of the Alibori river through the study of benthic macroinvertebrates in the cotton basin of Benin (West Africa) English Abstract The impact of the anthropic activities on the water ecosystems of the Benin cotton basin was assessed from October to December. The objective of this work is to determine the streams quality of Alibori basin by studying of benthic macroinvertebrates. A sample of macroinvertebrates was collected at 12 stations in the streams of the basin of the Alibori River. The inventory of the collected benthic macrofauna displayed a total of 25 species of water invertebrates belonging 16 families and 7 orders. These orders consisted of three classes: the Insects (5 orders, 12 families and 20 species), the Gastropods (1 order, 3 families and 4 species) and Bivalve (1 order, 1 family and 1 species). The analysis of the presence-absence of taxa obtained through SOM revealed a space distribution which indicates that the various sampling stations had in common a great part of benthic fauna and that their differences lie in a limited number of taxa which were specific to each sampling site. Six environmental parameters have discriminated this observed distribution. The abundance of some benthic groups such as Diptera and Coleoptera in the streams during the period of study shows that this basin is subject to anthropogenic disturbances. © 2016 International Formulae Group. All rights reserved. Keywords: Benthic macroinvertebrates, Alibori river, streams, disturbances

international journal of biological and chemical sciences

Evaluation de la qualité des eaux des ruisseaux du cours moyen de la rivière Alibori par l’étude des macroinvertébrés benthiques dans le bassin cotonnier du Bénin (Afrique de l’Ouest)