THE FORM AND CONSEQUENCES OF RANDOM-WALK MOVEMENT MODELS
THE FORM AND CONSEQUENCES OF RANDOM-WALK MOVEMENT MODELS
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DOI：
10.1016/s0022-5193(88)80028-6
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发表时间：
1988-07-08
影响因子：
2
通讯作者：
JONES, RE
中科院分区：
文献类型：
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作者：
MARSH, LM;JONES, RE
Kareiva和Shigesada(1983；Oecologia 56,234)指出，需要介于一般扩散模型和模拟之间的动物运动模型。他们研究了一个这样的模型，但也可能有其他各种各样的模型。我们讨论了另外三个用于动物运动的随机行走模型。模型分为两类，一类是步长和运动方向独立的模型，另一类是步长和运动方向不独立的模型。每一类又被进一步分为两个子类，“定向模型”，其中每一步的方向是相对于固定的指南针方向选择的，以及“无定向模型”，其中方向是相对于前一步选择的。定向轨道和非定向轨道之间的差异对运动插曲的结果至关重要，并开发了区分两者的测试程序。从数学和仿真两方面对模型进行了研究。
Kareiva and Shigesada (1983; Oecologia 56, 234) have indicated the need for models of animal movement lying between general diffusion models and simulations. They investigate one such model, but a variety of others are possible. We discuss three additional random walk models for animal movement. The models are divided into two classes, one in which step length and direction of movement are independent, the other in which they are not. Each class is further divided into two subclasses, "oriented models", in which the direction of each step is chosen relative to a fixed compass direction, and "unoriented models", in which direction is chosen relative to the preceding step. The difference between oriented and unoriented tracks is critical to the outcome of a movement episode, and a test procedure for distinguishing between the two is developed. The models are investigated both mathematically and by simulations.