Modeling of plankton community dynamics characterized by algal toxicity and allelopathy: A focus on historical Prymnesium parvum blooms in a Texas reservoir

► Dynamics of harmful algae and other planktonic populations are modeled. ► The model focuses on the species Prymnesium parvum. ► The model includes allelopathy and inhibition of grazing by algal toxins. ► Toxin-mediated processes are essential in calibrating the model to observations. ► The model reproduces observed seasonal and historical dynamics of harmful algae.