Micro‐scale geography of synchrony in a serpentine plant community,Journal of Ecology

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Micro‐scale geography of synchrony in a serpentine plant community
Journal of Ecology ( IF 5.3 ) Pub Date : 2020-09-08 , DOI: 10.1111/1365-2745.13503
Jonathan A. Walter _{1,

2} , Lauren M. Hallett ₃ , Lawrence W. Sheppard ₁ , Thomas L. Anderson ₁ , Lei Zhao _{1,

4} , Richard J. Hobbs ₅ , Katharine N. Suding ₆ , Daniel C. Reuman _{1,

7}

Affiliation

Fluctuations in population abundances are often correlated through time across multiple locations, a phenomenon known as spatial synchrony. Spatial synchrony can exhibit complex spatial structures, termed ‘geographies of synchrony’, that can reveal mechanisms underlying population fluctuations. However, most studies have focused on spatial extents of 10s to 100s of kilometres, making it unclear how synchrony concepts and approaches should apply to dynamics at finer spatial scales.
We used network analyses, multiple regression on similarity matrices, and wavelet coherence analyses to examine micro‐scale synchrony and geographies of synchrony, over distances up to 30 m, in a serpentine grassland plant community.
We found that species' populations exhibited a geography of synchrony even over such short distances. Often, well‐synchronized populations were geographically separate, a spatial structure that was shaped mainly by gopher disturbance and dispersal limitation, and to a lesser extent by relationships with other plant species. Precipitation was a significant driver of site‐ and community‐wide temporal dynamics. Gopher disturbance appeared to drive synchrony on 2‐ to 6‐year timescales, and we detected coherent fluctuations among pairs of focal plant taxa.
Synthesis. Micro‐geographies of synchrony are an intriguing phenomenon that may also help us better understand community dynamics. Additionally, the related geographies of synchrony and coherent temporal dynamics among some species pairs indicate that incorporating interspecific interactions can improve understanding of population spatial synchrony.

中文翻译：

蛇形植物群落中同步的微观尺度地理学

人口丰度的波动通常随时间在多个位置之间相关联，这种现象称为空间同步。空间同步可以表现出复杂的空间结构，称为“同步地理”，可以揭示人口波动的潜在机制。但是，大多数研究都集中在10s至100s公里的空间范围上，因此不清楚同步概念和方法应如何应用于更精细的空间尺度上的动力学。
我们使用网络分析，相似度矩阵的多元回归和小波相干分析，在蜿蜒的草地植物群落中检查了微观尺度上的同步和同步的地理范围，最远距离达30 m。
我们发现，即使在如此短的距离内，物种的种群也表现出同步的地理。通常，同步良好的种群在地理上是分开的，这种空间结构主要是由地鼠干扰和传播限制所决定的，而在较小程度上是由于与其他植物物种的关系而形成的。降水是站点和社区范围内时间动态的重要驱动力。地鼠干扰似乎在2至6年的时间尺度上推动了同步，我们检测到成对的重点植物类群之间存在连贯的波动。
综合。同步的微观地理位置是一个有趣的现象，也可能有助于我们更好地了解社区动态。此外，某些物种对之间相关的同步性和相干时间动态地理学表明，纳入种间相互作用可以增进对种群空间同步性的理解。

更新日期：2020-09-08

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