A model of algal growth depending on nutrients and inorganic carbon in a poorly mixed water column

A reaction-diffusion-advection model is proposed to describe the growth of algae depending on both nutrients and inorganic carbon in a poorly mixed water column. Nutrients from bottom surface form an asymmetric resource supply mechanism for algal growth. The existence stability semi-trivial steady state positive are proved, threshold condition regime shift extinction survival established. influence environmental parameters vertical distribution investigated It shown that can exhibit many different profiles under combined limitation carbon.