Cross-scale neutral ecology and the maintenance of biodiversity.

Cross-scale neutral ecology and the maintenance of biodiversity.
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DOI:
10.1038/s41598-018-27712-7
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发表时间:
2018-07-05
期刊:
影响因子:
4.6
通讯作者:
Cornell SJ
Cornell SJ
中科院分区:
综合性期刊3区
文献类型:
--
作者:
O'Dwyer JP;Cornell SJ

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中性生态学最早的成功之一是预测了稀有和丰富物种的广泛分布。然而,描述这种丰度分布如何随空间尺度变化仍然是一个突出的理论挑战,这一差距阻碍了利用观察到的物种丰度作为一种方式来量化需要哪些非中性过程来充分解释观察到的模式的尝试。为了解决这一问题,我们引入了一种新的空间中性生物多样性理论,并推导出了丰度分布随尺度变化的解析预测。对于热带森林数据,在此之前已经进行了广泛的中立性测试,我们应用这种方法,并确定了区域和地方尺度上的中性拟合之间的不兼容性。我们使用这种方法,对当地尺度上的非中性过程需要解释的东西进行了精确的量化,为维持生物多样性的更一般模型设定了一个量化目标。
One of the first successes of neutral ecology was to predict realistically-broad distributions of rare and abundant species. However, it has remained an outstanding theoretical challenge to describe how this distribution of abundances changes with spatial scale, and this gap has hampered attempts to use observed species abundances as a way to quantify what non-neutral processes are needed to fully explain observed patterns. To address this, we introduce a new formulation of spatial neutral biodiversity theory and derive analytical predictions for the way abundance distributions change with scale. For tropical forest data where neutrality has been extensively tested before now, we apply this approach and identify an incompatibility between neutral fits at regional and local scales. We use this approach derive a sharp quantification of what remains to be explained by non-neutral processes at the local scale, setting a quantitative target for more general models for the maintenance of biodiversity.
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