Characterization by benthic macroinvertebrates and some environmental factors of streams in the East Cameroon region

Macrobenthic fauna have recently been widely used as bio-indicators for their ability to reflect the various disturbances in aquatic ecosystems. They assess ecological health of streams East Cameroon region. This study aims reveal four by studying variations population benthic macroinvertebrates collected them. Sampling was done from December 2018 2019 a total 13 months spread over collection seasons. Kohonen's self-organising map (SOM) performed distribution patterns organisms collected. Discriminant factor analysis (DFA) identify parameters that characterise these observed environment. Four groups macrobenthic populations were observed. The spatial, temporal and discriminated variable mineralization sediment grain size. taxonomic richness is linked environmental conditions stations, which appear be more or less stable, highlighting stress gradient on organisms. station (Sen3), with unstable conditions, site anthropic activities due its proximity residential areas, are enriched organic matter and, result, abound pollutant-resistant species such diptera (Chironomus holomelas, Chironomus sp1 sp2). other well differentiated subject light anthropogenic disturbance.