Objective: To preserve and enhance the aquatic ecosystems of the Region of Littoral (Cameroon) threatened by invasive macrophytes, an ecological study highlighting the distribution of water hyacinth (Eichhornia crassipes) in aquatic ecosystems was conducted. Methodology and results: During this study, 36 plots of 50 m 2 each were established in 9 sites of the region of Douala town and surroundings by using Braun-Blanquet phytosociological methods. The floristic inventory showed that 2 species (Eichhornia crassipes and Panicum maximum) were the most represented. Sorensen indexes were near 0 reflecting a low level of similarity between the communities. Thus, E. crassipes was rich in water (about 90%) and shows an average energy value of 300kcal / 100g of dry matter. The carbohydrate content varied from 28 to 72g / 100g, protein <20% lipids and there are traces. There was a high ash content.
Influence des sols salins et calcaires sur la croissance, la nutrition minérale et les composantes agronomiques du niébé dans trois zones agro écologiques du Cameroun
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