THE ECOLOGICAL REGULATION OF SPECIES DIVERSITY
THE ECOLOGICAL REGULATION OF SPECIES DIVERSITY
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DOI：
10.1086/282335
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发表时间：
1964-01-01
影响因子：
2.9
通讯作者：
ORIAS, E
中科院分区：
文献类型：
--
作者：
CONNELL, JH;ORIAS, E
生态系统维持的多样性水平是由流经其食物网的能量量决定的。提出了一个详细的模型，该模型表明，随着环境稳定性的提高，监管活动所需的能源减少，因此更多的能源分配给净生产力。因此，包含更多遗传多样性的更大种群得到了支持。在生产力更高的群体中，动物更久坐不动，从而减少了当地种群之间的基因流动。因此，物种形成有利于提供新的适应机会的种间结合。在早期阶段，由于几种机制，物种形成以不断增加的速度发生。后来，过度专业化和较小的人口充当了一种调节机制。
The level of diversity maintained in an ecological system is determined by the amount of energy flowing through its food web. A detailed model is presented which states that with increased stability of the environment, less energy is required for regulatory activities and so more energy is allotted to net productivity. As a consequence larger populations containing more genetic variety are supported. Animals in more productive communities are more sedentary so that the gene flow between local populations is reduced. As a result, speciation is favored with interspecies associations providing the new adaptive opportunities. In the early stages, speciation occurs at an ever-increasing rate due to several mechanisms. Later on the overspecialization and smaller populations act as a regulatory mechanism.