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A multimetric index for assessment of aquatic ecosystem health based on macroinvertebrates for the Zio river basin in Togo
Limnologica ( IF 1.7 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.limno.2020.125783 Lallébila Tampo , Iuliana Mihaela Lazar , Idrissa Kaboré , Adama Oueda , Kossitse Venyo Akpataku , Gbandi Djaneye-Boundjou , Limam Moctar Bawa , Gabriel Lazar , Wendengoudi Guenda
Limnologica ( IF 1.7 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.limno.2020.125783 Lallébila Tampo , Iuliana Mihaela Lazar , Idrissa Kaboré , Adama Oueda , Kossitse Venyo Akpataku , Gbandi Djaneye-Boundjou , Limam Moctar Bawa , Gabriel Lazar , Wendengoudi Guenda
Abstract The use of multimetric indices as tools for assessing aquatic ecosystem health in most of the developing countries such as Togo is still lacking. To fill this gap, we developed a macroinvertebrates-based multimetric index for the Zio river basin of Togo. Forty-two sites were assessed for the development and the validation of the Multimetric Index of Zio River Basin (MMIZB). Thirty-nine candidate metrics belonging to four categories (composition metrics, functional feeding metrics, diversity metrics and tolerance measure metrics) were evaluated. After comprehensive multiple selection procedure, six core metrics were retained to provide the final MMIZB. The results showed that the MMIZB responded to a set of organic pollution (chemical oxygen demand, ammonium, total suspended solid) and hydromorphological alterations, which corresponded to a set of gradients of human pressures affecting the ecological integrity of Zio river basin water bodies (r = 0.78, p
更新日期：2020-07-01
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