ABSTRACT Water hyacinth (Eichhornia crassipes) is a dominant aquatic macrophyte found in tropical rivers, which has a relationship with the food web, and surrounding environment. This study aimed to investigate the influence of Eichhornia crassipes on the seasonal abundance and distribution of members of the phylum Rotifera in Ovia River, Edo State. Four stations of the river were selected along the river, and samples were collected monthly from April to September, 2019. Quantitative sample...
