Stochasticity, invasions, and branching random walks
Stochasticity, invasions, and branching random walks
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DOI：
10.1016/j.tpb.2004.05.005
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发表时间：
2004-11-01
影响因子：
1.4
通讯作者：
Walton, DB
中科院分区：
文献类型：
--
作者：
Kot, M;Medlock, J;Walton, DB
我们链接确定性积分差分方程随机，基于个人的模拟通过分支随机游动。使用标准的方法，我们确定入侵的平均密度和最远的个人的速度。对于与密度无关的分支随机游动，人口统计随机性可以产生灭绝。然而，人口统计学的随机性并不能降低整体的渐近入侵速度，也不能排除不断加速的入侵。(C)2004年爱思唯尔公司All rights reserved.
We link deterministic integrodifference equations to stochastic, individual-based simulations by means of branching random walks. Using standard methods, we determine speeds of invasion for both average densities and furthest-forward individuals. For density-independent branching random walks, demographic stochasticity can produce extinction. Demographic stochasticity does not, however, reduce the overall asymptotic speed of invasion or preclude continually accelerating invasions. (C) 2004 Elsevier Inc. All rights reserved.