ECOLOGICAL CHAOS IN THE WAKE OF INVASION

被引：145

作者：

SHERRATT, JA

LEWIS, MA

FOWLER, AC

机构：

[1] UNIV UTAH,DEPT MATH,SALT LAKE CITY,UT 84112

[2] MATH INST,OXFORD OX1 3LB,ENGLAND

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 1995年 / 92卷 / 07期

关键词：

D O I：

10.1073/pnas.92.7.2524

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Irregularities in observed population densities have traditionally been attributed to discretization of the underlying dynamics. We propose an alternative explanation by demonstrating the evolution of spatiotemporal chaos in reaction-diffusion models for predator-prey interactions. The chaos is generated naturally in the wake of invasive waves of predators. We discuss in detail the mechanism by which the chaos is generated. By considering a mathematical caricature of the predator-prey models, we go on to explain the dynamical origin of the irregular behavior and to justify our assertion that the behavior we present is a genuine example of spatiotemporal chaos.

引用

页码：2524 / 2528

页数：5

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