Ecological impact of Prosopis species invasion in Turkwel riverine forest, Kenya

► We assessed herbs and tree regeneration under Prosopis and Acacia tortilis canopies. ► Herbs diversity and productivity were lower under Prosopis than under A. tortilis. ► We also found lack of A. tortilis seedlings under Prosopis canopy. ► Apparently, Prosopis invasion has severe repercussions to riverine forest ecology. ► We recommend Prosopis management to mitigate ecological and livelihoods threats.