EVOLUTIONARY DYNAMIC MODEL OF POPULATION WITH NICHE CONSTRUCTION AND ITS APPLICATION RESEARCH

• Published in: Applied mathematics and mechanics Vol. 27; no. 3; pp. 327 - 334
• Main Author: 李自珍 韩晓卓 李文龙
• Format: Journal Article
• Language: English
• Published: Key Laboratory of Arid Agroecology under Ministry of Education, Lanzhou University,Lanzhou 730000, P. R. China%Key Laboratory of Arid Agroecology under Ministry of Education, Lanzhou University,Lanzhou 730000, P. R. China%School of Pastoral Agriculture Science and Technology, Lanzhou University,Lanzhou 730000, P. R. China 01.03.2006; School of Mathematics and Statistics, Lanzhou University, Lanzhou 730000, P. R. China
• Subjects: Construction; Dynamic tests; Dynamical systems; Dynamics; Ecological effects; Evolutionary; Mathematical models; Organisms; 生态建筑; 种群动力学; 竞争生存; 进化动态模型; model; niche construction; evolutionary kinetics; competitive coexistence; population dynamics
• ISSN: 0253-4827; 1573-2754; 1573-2754
• DOI: 10.1007/s10483-006-0307-1

Based on the theories and approaches in biomechanics, the mechanism and pattern of niche construction were discussed systematically. Through establishing the spatial pattern of niche and its measuring-fitness formula, and the dynamic system models of single- and two-population with niche construction, including corresponding theoretical analysis and numerical simulation on their evolutionary dynamics of population and the mechanism of competitive coexistence, the co-evolutionary relationship between organisms and their environments was revealed. The results indicate that population dynamics is governed by positive feedback between primary ecological factors and resource content. Niche construction generates an evolutionary effect in system by influencing the fitness of population. A threshold effect exists in single population dynamic system, in dynamic system of two competitive populations, niche construction can lead to alternative competitive consequences, which may be a potential mechanism to explain the competitive coexistence of species.