A niche for neutrality
A niche for neutrality
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DOI：
10.1111/j.1461-0248.2006.00996.x
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发表时间：
2007-02-01
期刊：
影响因子：
8.8
通讯作者：
Levine, Jonathan M.
中科院分区：
文献类型：
--
作者：
Adler, Peter B.;HilleRisLambers, Janneke;Levine, Jonathan M.
生态学家现在认识到，关于生态位和中立性的相对重要性的争论不能通过分析物种丰度模式来解决。在这里，我们使用经典的共存理论来重新定义的辩论中的稳定机制（小生境）和适应性等价（中性）。中性模型是一个特殊的情况下，稳定机制是不存在的，物种具有相等的适应度。而不是问是否利基或中性过程结构社区，我们主张确定所观察到的多样性的程度反映了强大的稳定机制，克服大的健身差异或弱稳定操作的物种相似的健身。为了回答这个问题，我们建议将人均增长率数据与模型相结合：（i）量化稳定过程的强度;（ii）量化适应性不平等并将其与稳定化进行比较;（iii）操纵增长的频率依赖性，以测试稳定化和适应性等价共存的后果。
Ecologists now recognize that controversy over the relative importance of niches and neutrality cannot be resolved by analyzing species abundance patterns. Here, we use classical coexistence theory to reframe the debate in terms of stabilizing mechanisms (niches) and fitness equivalence (neutrality). The neutral model is a special case where stabilizing mechanisms are absent and species have equivalent fitness. Instead of asking whether niches or neutral processes structure communities, we advocate determining the degree to which observed diversity reflects strong stabilizing mechanisms overcoming large fitness differences or weak stabilization operating on species of similar fitness. To answer this question, we propose combining data on per capita growth rates with models to: (i) quantify the strength of stabilizing processes; (ii) quantify fitness inequality and compare it with stabilization; and (iii) manipulate frequency dependence in growth to test the consequences of stabilization and fitness equivalence for coexistence.