Correlated Noises in a Prey--Predator Ecosystem
ZHONG Wei-Rong, SHAO Yuan-Zhi, HE Zhen-Hui
State Key Laboratory of Optoelectronic Materials and Technologies, Department of Physics, Sun Yat-sen University, Guangzhou 510275
Correlated Noises in a Prey--Predator Ecosystem
ZHONG Wei-Rong;SHAO Yuan-Zhi;HE Zhen-Hui
State Key Laboratory of Optoelectronic Materials and Technologies, Department of Physics, Sun Yat-sen University, Guangzhou 510275
关键词 ：
87.23.Cc ,
05.40.Ca ,
02.50.Ey ,
02.60.Cb
Abstract ： We investigate a Volterra ecosystem driven by correlated noises. The fluctuation in the death rate of the predator induces an increase of population density of the predators. The fluctuation in the growth rate of the prey, however, leads the predators to decay. It is reported that the predators undergo sensitivity to a random environment, whereas the preys exhibit a surprising endurance to the same stochastic factor. The predators are of better stability under strong correlation of noises.
Key words ：
87.23.Cc
05.40.Ca
02.50.Ey
02.60.Cb
出版日期: 2006-03-01
:
87.23.Cc
(Population dynamics and ecological pattern formation)
05.40.Ca
(Noise)
02.50.Ey
(Stochastic processes)
02.60.Cb
(Numerical simulation; solution of equations)
引用本文:
ZHONG Wei-Rong;SHAO Yuan-Zhi;HE Zhen-Hui. Correlated Noises in a Prey--Predator Ecosystem[J]. 中国物理快报, 2006, 23(3): 742-745.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2006/V23/I3/742
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2006, Vol. 23 
