干扰、斑块形成与群落结构。
Disturbance, patch formation, and community structure.
作者信息
Levin S A, Paine R T
出版信息
Proc Natl Acad Sci U S A. 1974 Jul;71(7):2744-7. doi: 10.1073/pnas.71.7.2744.
Abstract
A model is developed to relate community structure to level of environmental disturbance in systems in which the effects of disturbance are localized in space and time. In general these disturbances create a pattern of spatio-temporal heterogeneity by renewing a limiting resource, thereby permitting utilization by species that are not dominant competitors. The proposed model predicts the frequency distribution of these renewed areas, with regard to size and age (colonization stage). The model thus allows one to relate overall system pattern to the local biology within these areas, to compare various areas with different levels of disturbance, and to predict the effects of new disturbance.
摘要
开发了一个模型，用于将群落结构与系统中的环境干扰水平联系起来，在这些系统中，干扰的影响在空间和时间上是局部化的。一般来说，这些干扰通过更新一种限制性资源来创造一种时空异质性模式，从而使那些不是优势竞争者的物种能够利用资源。所提出的模型预测了这些更新区域在大小和年龄（定殖阶段）方面的频率分布。该模型因此使人们能够将整个系统模式与这些区域内的局部生物学联系起来，比较具有不同干扰水平的各个区域，并预测新干扰的影响。
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