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原文連結
論文資訊
- 類型:已發表論文
- 日期:2009
摘要
The biogeographic expansion of modern humans out of Africa began approximate to 50,000 years ago. This expansion resulted in the colonization of most of the land area and habitats throughout the globe and in the replacement of preexisting hominid 物種. However, such rapid 族群 growth and geographic spread is somewhat unexpected for a large primate with a slow, density-dependent life history. Here, we suggest a mechanism for these outcomes by modifying a simple density-dependent 族群 model to allow varying levels of intraspecific competition for finite resources. Reducing intraspecific competition increases carrying capacities, growth rates, and stability, including persistence times and speed of recovery from perturbations. Our model suggests that the energetic benefits of 合作 in modern humans ma
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