Micro‐scale geography of synchrony in a serpentine plant community
Micro‐scale geography of synchrony in a serpentine plant community
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DOI：
10.1111/1365-2745.13503
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发表时间：
2020-03
影响因子：
5.5
通讯作者：
J. Walter;L. Hallett;Lawrence W. Sheppard;T. Anderson;Lei Zhao;R. Hobbs;K. Suding;D. Reuman
中科院分区：
文献类型：
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作者：
J. Walter;L. Hallett;Lawrence W. Sheppard;T. Anderson;Lei Zhao;R. Hobbs;K. Suding;D. Reuman
人口丰度的波动通常与多个地点的时间相关，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机制。然而，大多数研究都集中在10到100公里的空间范围内，因此不清楚同步概念和方法如何适用于更精细空间尺度的动态。我们使用网络分析，相似性矩阵的多元回归和小波相干分析来研究微尺度同步性和同步性的地理位置，距离可达30米，在蛇形草原植物群落中。我们发现，即使在如此短的距离内，物种的种群也表现出地理同步性。通常，同步性良好的种群在地理上是分离的，这种空间结构主要是由地鼠干扰和扩散限制形成的，在较小程度上是由与其他植物物种的关系形成的。降水是站点和社区范围内时间动态的重要驱动因素。地鼠干扰似乎在2至6年的时间尺度上驱动同步，我们检测到焦点植物类群之间的相干波动。合成.同步的微观地理是一个有趣的现象，也可以帮助我们更好地理解社区动态。此外，一些物种对之间的同步性和连贯的时间动态的相关地理表明，将种间相互作用可以提高对种群空间同步性的理解。
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.