Monday Analysis Seminar: Multi-layer model of tree populations

2012-11-12 14:45 - 2012-11-12 16:15
Faculty of Science Buliding #3 Room 210
Takenori TAKADA (Graduate School of Environmental Science, Hokkaido University)
As the advanced study of stage-structured populations, I introduce a multi-layer model to describe the dynamics of a tree population. Population of a tree species often occupies the different layers as they grow up from seedlings or saplings to mature trees. They transit from lower layer to middle and top layer during their lifetime. We examined the local stability of the equilibrium of the system. From our result, we discussed about the relationship between local stability and the pattern of interaction among individuals at different layers. It is shown that one-sided interaction (or asymmetric competition) through light resource promotes the stability of tree populations with 2 layers. However, it does not that with 3 layers.