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[Reconstruction of Polytrichum juniperinum population dynamics in a mire of China]
Zhaojun Bu1, Yunfei Yang, Shengzhong Wang
1Key Laboratory for Wetland Conservation and Vegetation Restoration of State Environmental Protection Ministry, Institute for Peat and Mire, Northeast China. buzhaojun@nenu.edu.cn
Abstract:
By using 'history reconstruction method', this paper studied the dynamics of two Polytrichum juniperinum populations with and without sporophytes. The population with sporophyte production experienced a dynamic process from increase to stabilization, while that without sporophyte production experienced a process from increase to decrease. Before 2003, both the increase rate and the birth rate of two populations decreased continuously, with the death rate showing the tendency from decrease to a continuous increase. The advantages of 'history reconstruction method' in studying population dynamics were proved and discussed.

