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首页> 外文期刊>Ecology letters >A mean field model for competition: from neutral ecology to the Red Queen
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A mean field model for competition: from neutral ecology to the Red Queen

机译：竞争的平均模型：从中立生态学到红色女王

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摘要

Individual species are distributed inhomogeneously over space and time, yet, within large communities of species, aggregated patterns of biodiversity seem to display nearly universal behaviour. Neutral models assume that an individual's demographic prospects are independent of its species identity. They have successfully predicted certain static, time-independent patterns. But they have generally failed to predict temporal patterns, such as species ages or population dynamics. We construct a new, multispecies framework incorporating competitive differences between species, and assess the impact of this competition on static and dynamic patterns of biodiversity. We solve this model exactly for the special case of a Red Queen hypothesis, where fitter species are continually arising. The model predicts more realistic species ages than neutral models, without greatly changing predictions for static species abundance distributions. Our modelling approach may allow users to incorporate a broad range of ecological mechanisms.
机译：单个物种在空间和时间上分布不均匀，但是，在大型物种群落中，生物多样性的聚集模式似乎表现出几乎普遍的行为。中性模型假设个人的人口前景与其物种身份无关。他们已经成功地预测了某些静态的，与时间无关的模式。但是他们通常无法预测时间模式，例如物种年龄或种群动态。我们构建了一个新的多物种框架，其中纳入了物种之间的竞争差异，并评估了这种竞争对生物多样性的静态和动态模式的影响。我们针对红色女王假说的特殊情况精确地求解该模型，在此情况下，钳工物种不断出现。与中性模型相比，该模型预测的物种年龄更现实，而对静态物种的丰度分布的预测不会发生很大变化。我们的建模方法可以使用户纳入各种生态机制。

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