Dynamics of phytoplankton species competition for light and nutrient with recycling in a water column

This paper analytically investigates a nonlocal system of reaction- diffusion-advection equations modeling the competition of two phytoplankton species for a limiting nutrient and light in a water column*where dead phy- toplankton species can get recycled back into the system as a resource for growth. The threshold dynamics of the single population model is first es- tablished. Then the utilization of abstract persistence theory enables us to show that two species population system admits a coexistence steady state and the system is uniformly persistent if the trivial steady state and two global attractors on the boundary are all weak repellers.