Synchronization in a Mutualism Ecosystem Induced by Noise Correlation

• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2008,（9）
• 页码范围: 793-796
• 页数: 4页
• 语种: 英文

摘要

Understanding the cause of the synchronization of population evolution is an important issue for ecological improvement.Here we present a Lotka-Volterra-type model driven by two correlated environmental noises and show,via theoretical analysis and direct simulation,that noise correlation can induce a synchronization of the mutualists.The time series of mutual species exhibit a chaotic-like fluctuation,which is independent of the noise correlation,however,the chaotic fluctuation of mutual species ratio decreases with the noise correlation.A quantitative parameter defined for characterizing chaotic fluctuation provides a good approach to measure when the complete synchronization happens.