Influence of micro-habitats on the distribution of macroinvertebrates in Burkina Faso (West Africa)
Abstract
In Burkina Faso, the use of macroinvertebrates as bioindicateurs in aquatic ecosystems monitoring remains poor. To fill this gap, we assessed the influence of micro-habitats on the distribution of macroinvertebrates in lake Ziga in Burkina Faso from July to December 2016. The key water quality variables were measured in-situ using a portable multi-parameter probe. The macroinvertebrates were collected with a hand net, and identified using taxonomic manuals and keys. A total of 33 taxa were reported in five micro-habitats. Insects were the most abundant (88.22%) and the most diversified (24 taxa (72.72%)). The highest diversity (27 taxa) was observed in the micro-habitats dominated by aquatic plants and roots. The Redundancy analysis showed that the coleopterans and hemipterans were strongly and positively correlated to the transparency and the conductivity. In local area, the results showed that the diversity and distribution of macroinvertebrates are more linked to the habitat availability. The protection of habitats is a key element for the conservation of biodiversity in West Africa.
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