Département de biologie, chimie et géographie, Université du Québec à Rimouski, 300 Allée des Ursulines, Québec G5L 3A1, Canada.
Ecol Lett. 2011 Oct;14(10):1010-6. doi: 10.1111/j.1461-0248.2011.01667.x. Epub 2011 Aug 2.
MacArthur and Wilson's Theory of Island Biogeography (TIB) is among the most well-known process-based explanations for the distribution of species richness. It helps understand the species-area relationship, a fundamental pattern in ecology and an essential tool for conservation. The classic TIB does not, however, account for the complex structure of ecological systems. We extend the TIB to take into account trophic interactions and derive a species-specific model for occurrence probability. We find that the properties of the regional food web influence the species-area relationship, and that, in return, immigration and extinction dynamics affect local food web properties. We compare the accuracy of the classic TIB to our trophic TIB to predict community composition of real food webs and find strong support for our trophic extension of the TIB. Our approach provides a parsimonious explanation to species distributions and open new perspectives to integrate the complexity of ecological interactions into simple species distribution models.
麦克阿瑟-威尔逊岛屿生物地理学理论（TIB）是物种丰富度分布最著名的基于过程的解释之一。它有助于理解物种-面积关系，这是生态学中的基本模式，也是保护的重要工具。然而，经典的 TIB 并没有考虑到生态系统的复杂结构。我们扩展了 TIB 以考虑营养相互作用，并推导出一个特定于物种的出现概率模型。我们发现，区域食物网的性质影响物种-面积关系，而移民和灭绝动态又反过来影响当地食物网的性质。我们将经典 TIB 的准确性与我们的营养 TIB 进行比较，以预测真实食物网的群落组成，并强烈支持我们对 TIB 的营养扩展。我们的方法为物种分布提供了一个简洁的解释，并为将生态相互作用的复杂性纳入简单的物种分布模型开辟了新的视角。
