Different dispersal abilities allow reef fish to coexist
Different dispersal abilities allow reef fish to coexist
复制标题
DOI：
10.1073/pnas.1101019108
复制
发表时间：
2011-09-27
影响因子：
11.1
通讯作者：
Armsworth, Paul R.
中科院分区：
文献类型：
--
作者：
Bode, Michael;Bode, Lance;Armsworth, Paul R.
多个物种在有限的资源上共存是一个持久的生态悖论。维持这种生物多样性的机制对生态学具有重大意义，对保护至关重要。我们描述并证明了一个独特的和强大的共存机制：物种的不同，只有在他们的传播能力可以共存，如果栖息地补丁分布在不规则的距离。这种机制是简单的，生态直观的，但仍然可以创建复杂的共存模式，是强大的大量环境随机性。大堡礁（GBR）以其珊瑚礁鱼类的多样性和珊瑚礁栖息地的复杂排列而闻名。我们证明，这种机制可以让鱼类与不同的浮游幼虫持续时间稳定共存的GBR。此外，GBR上的共存物种通常主导不同的次区域，主要由跨大陆架位置定义。种间扩散能力的差异产生类似的共存模式时，传播的幼虫行为和可变的海洋条件的影响。许多海洋和陆地生态系统的特点是生境分布不均匀，并含有具有不同扩散能力的共存物种。因此，这种共存机制可能具有超越珊瑚鱼的生态相关性。
The coexistence of multiple species on a smaller number of limiting resources is an enduring ecological paradox. The mechanisms that maintain such biodiversity are of great interest to ecology and of central importance to conservation. We describe and prove a unique and robust mechanism for coexistence: Species that differ only in their dispersal abilities can coexist, if habitat patches are distributed at irregular distances. This mechanism is straightforward and ecologically intuitive, but can nevertheless create complex coexistence patterns that are robust to substantial environmental stochasticity. The Great Barrier Reef (GBR) is noted for its diversity of reef fish species and its complex arrangement of reef habitat. We demonstrate that this mechanism can allow fish species with different pelagic larval durations to stably coexist in the GBR. Further, coexisting species on the GBR often dominate different subregions, defined primarily by cross-shelf position. Interspecific differences in dispersal ability generate similar coexistence patterns when dispersal is influenced by larval behavior and variable oceanographic conditions. Many marine and terrestrial ecosystems are characterized by patchy habitat distributions and contain coexisting species that have different dispersal abilities. This coexistence mechanism is therefore likely to have ecological relevance beyond reef fish.