| Titre |
Can Macroinvertebrate Assemblage Changes Be Used as Biological Indicator of Water Quality of the Nokoue Lake (Benin)? |
| Auteurs |
ODOUNTAN Hamed Olaniran [1],
ABOU YOUSSOUF [2],
|
| Journal: |
Journal of Environmental Protection |
| Catégorie Journal: |
Internationale |
| Impact factor: |
0 |
| Volume Journal: |
6 |
| DOI: |
|
| Resume |
Investigations on biological capacity of water quality of macroinvertebrate community are very
uncommon, and such as the amount of information available on the Nokoue Lake (the largest lake
of Benin) is very limited. This information gap needs to be filled for better management of the
Nokoue Lake. The goal of this study was to evaluate the possibility of using the macroinvertebrate
community structures in Nokoue Lake and the environmental factors responsible for the
maintenance of these structures. Nokoue Lake was studied over three months, during high flood
period in which time subsurface water and macroinvertebrate samples were collected and analyzed.
A study showed that the macroinvertebrate assemblages was done according to ecological
gradients as pH, conductivity, TDS, salinity, chlorophyll a and probably to anthropogenic actions
(nutriments). Better than the percentage of insects, the percentage of Chironomidae informed
very well about macroinvertebrate assemblages. To assess the biological health of the environment,
the Family Biotic Index (FBI) turns out to be more appropriate than diversity indices that do
not take into account the intermediate pollution. Organic pollution revealed by the FBI probably
affects the aquatic life. |
| Mots clés |
Nokoue Lake, Macroinvertebrates, Family Biotic Index, Flood Period, Diversity Indices |
| Pages |
1402 - 1416 |
| Fichier |
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