Relations between structure of biological communities and ecosystem functions determined by interactions of predation and competition

我用数学模型研究了生物多样性、生态系统功能和稳定性之间的关系。我得到了以下结果：草食物种数量的增加和植物间竞争的加剧可能会增加植物多样性；生境的异质性空间结构可缓解间接竞争；从生产者到杂食动物的间接和直接能量路径之间的相对效率控制着包括杂食动物在内的食物网的动态；食草动物种群突发性增长的一个主要因素是植物之间的竞争，食肉动物稳定了由食草动物和植物组成的群落。

I studied relations between biodiversity, ecosystem function and stability, employing mathematical models. I have obtained the following results ; the higher number of herbivore species and the more intense competition among plants may enhance plant diversity ; heterogeneous spatial structure of a habitat may relax indirect competition ; relative efficiency between indirect and direct energy paths from the producer to the omnivore controls dynamics of a food web including omnivores ; a primary factor of irruptive increase in a herbivore population is competition among plants, and predators stabilize a community composed of herbivores and plants.