消费者分散、资源分散与准共生城市多样性之间的一般关系
General relationships between consumer dispersal, resource dispersal and metacommunity diversity
摘要：
元居群理论的核心问题之一是生物的扩散如何影响物种多样性〈动〉<动>。在这里，我们表明，多样性扩散的关系不应该孤立地研究其他非生物和生物流的metacrobacterity。我们研究了一个消费物种竞争非生物或生物资源的机制代谢模型。我们认为这两个消费者物种专门的栖息地补丁，和通才物种能够使用整个metacompatibility的资源。我们提出了不同的极限值的消费者分散和资源分散的分析结果，并补充这些结果与模拟中间分散值。我们的分析揭示了消费者和资源扩散的消费物种的元生态多样性的综合影响的通用模式，并表明当地的多样性和扩散之间的驼峰形的关系是不普遍的。多样性-扩散关系也可以是单调递增的或多峰的。我们的工作是一个新的一步，在多个营养级整合扩散的metacompatibility多样性的一般理论。
英文摘要：
One of the central questions of metacommunity theory is how dispersal of organisms affects species diversity. Here we show that the diversity-dispersal relationship should not be studied in isolation of other abiotic and biotic flows in the metacommunity. We study a mechanistic metacommunity model in which consumer species compete for an abiotic or biotic resource. We consider both consumer species specialized to a habitat patch, and generalist species capable of using the resource throughout the metacommunity. We present analytical results for different limiting values of consumer dispersal and resource dispersal, and complement these results with simulations for intermediate dispersal values. Our analysis reveals generic patterns for the combined effects of consumer and resource dispersal on the metacommunity diversity of consumer species, and shows that hump-shaped relationships between local diversity and dispersal are not universal. Diversity-dispersal relationships can also be monotonically increasing or multimodal. Our work is a new step towards a general theory of metacommunity diversity integrating dispersal at multiple trophic levels.
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