Mutualistic relationships between phytoplankton and bacteria caused by carbon excretion from phytoplankton

摘要: For the competition system of phytoplankton and bacteria through inorganic phosphorus, our mathematical model showed that mutualistic relationships between them could occur due to production consumption extracellular organic carbon by bacteria. In model, are limited in their growth light phosphorus released from phytoplankton. We adopted ‘permanence’ as a criterion coexistence analysis, led necessary conditions permanence model. Under these conditions, we estimated strength total effects interactions at steady state press perturbation method. The results this estimation indicated This suggests situation introduction flow bacteria, even if compete with each other common resource, phosphorus.