Journal of
Ecology and The Natural Environment

  • Abbreviation: J. Ecol. Nat. Environ.
  • Language: English
  • ISSN: 2006-9847
  • DOI: 10.5897/JENE
  • Start Year: 2009
  • Published Articles: 379

Full Length Research Paper

Ecological status of a newly impounded sub-saharan reservoir based on benthic macroinvertebrates community (Burkina Faso, West Africa)

Bancé Victor
  • Bancé Victor
  • Laboratoire de Biologie et Ecologie Animales (LBEA), UFR/SVT, Université Joseph KI-ZERBO, Burkina Faso.
  • Google Scholar
Ouéda Adama
  • Ouéda Adama
  • Laboratoire de Biologie et Ecologie Animales (LBEA), UFR/SVT, Université Joseph KI-ZERBO, Burkina Faso.
  • Google Scholar
Kaboré Idrissa
  • Kaboré Idrissa
  • Laboratoire de Biologie et Ecologie Animales (LBEA), UFR/SVT, Université Joseph KI-ZERBO, Burkina Faso.
  • Google Scholar
Zerbo Henri
  • Zerbo Henri
  • Direction Générale des Ressources Halieutiques, Ministère des Ressources Animales et Halieutiques, Burkina Faso.
  • Google Scholar
Kabré B. Gustave
  • Kabré B. Gustave
  • Laboratoire de Biologie et Ecologie Animales (LBEA), UFR/SVT, Université Joseph KI-ZERBO, Burkina Faso.
  • Google Scholar


  •  Received: 07 December 2020
  •  Accepted: 28 January 2021
  •  Published: 28 February 2021

Abstract

In West Africa, particularly in Burkina Faso, the aquatic ecosystems are under human pressures. Therefore, for long term management of these ecosystems, the managers need baseline data for regular assessment of ecological health condition. In this regard, the structure of the benthic macroinvertebrate community was investigated and the relationship between the environmental variables and biotic indices of the Samandéni reservoir from January to December 2018, after one-year impoundment was explored. The macroinvertebrates were collected with a hand net (25 × 25 cm2 coverage area and 500 μm mesh) according to the multi-habitat sampling method. Key environmental variables such as temperature, conductivity, dissolved oxygen, pH and total dissolve solids (TDS) were measured in situ. High diversity of macroinvertebrates was reported and thirty-four (34) taxa were determined belonging to eight (8) orders dominated by insects (79.41% of all taxa). Good ecological quality of the reservoir was testified by the presence of several sensitive taxa like Ephemeroptera and Trichoptera. The trends of environmental variables also reflect good habitat conditions. The results revealed a strong and negative relationship between some abiotic variables and biotic indices. The finding of this study is of big importance for sustainable management of the Samandéni Reservoir.

 

Key words: Burkina Faso, macroinvertebrates, monitoring, reservoir, status.