Analysis of periodic growth-disturbance models

作者：Reluga TC^*

来源：Theoretical Population Biology, 2004, 66(2): 151-161.

DOI：10.1016/j.tpb.2004.05.003

• periodic disturbance
• period-bubbling
• seed bank
• density dependence
• population ecology

In this paper, I present and discuss a potentially useful modeling approach for investigating population dynamics in the presence of disturbance. Using the motivating example of wildfire, I construct and analyze a deterministic model of population dynamics with periodic disturbances independent of spatial effects. Plant population growth is coupled to fire disturbance to create a growth-disturbance model for a fluctuating population. Changes in the disturbance frequency are shown to generate a period-bubbling bifurcation structure and population dynamics that are most variable at intermediate disturbance frequencies. Similar dynamics are observed when the model is extended to include a seed bank. Some general conditions necessary for a rich bifurcation structure in growth-disturbance models are discussed.

• 出版日期2004-9