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首页> 外文会议>STP 1458; Symposium on Landscape Ecology and Wildlife Habitat Evaluation: Critical Information for Ecological Risk Assessment, Land-Use Management Activities, and Biodiversity Enhancement; 20030407-09; Kansas City,MO(US) >Population Dynamics in Spatially and Temporally Variable Habitats
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Population Dynamics in Spatially and Temporally Variable Habitats

机译：时空栖息地的人口动态

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摘要

Populations live in habitats whose quality varies spatially and temporally. Understanding how populations deal with these variable habitats can aid our understanding of theoretical issues, and practical issues of biological invasions and biodiversity conservation. I investigate these issues by superimposing simple models of population growth and dispersal on spatiotemporally fractal landscapes, and examining the properties of the landscapes, and of the populations inhabiting them. The properties of the simulated landscape sequences are comparable to those of real habitats. The simulated populations exhibit a range of dynamic behaviors; these behaviors are strongly influenced by the fractal parameters of the landscapes. The results may help explain several important phenomena seen in reintroductions of threatened and endangered species, introductions of biological control agents, and biological invasions. These phenomena include frequently observed lags between population introduction and initial population growth and spread, and the observed high frequency of failure of introductions.
机译：种群生活在质量随时间而变化的栖息地中。了解人口如何应对这些变化的生境可以帮助我们理解生物学入侵和生物多样性保护的理论问题和实际问题。我通过在时空分形景观上叠加人口增长和扩散的简单模型，并研究景观及其居住人口的特性，来研究这些问题。模拟景观序列的特性与真实栖息地的特性相当。模拟的种群表现出一系列动态行为。这些行为受到景观分形参数的强烈影响。这些结果可能有助于解释在重新引入濒临灭绝的物种，生物控制剂的引入和生物入侵中看到的几种重要现象。这些现象包括经常观察到的种群引进与初始种群增长和扩散之间的滞后现象，以及观察到的引入失败的高频率。

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