A Spatial Perspective on the Phenological Distribution of the Spring Woodland Caterpillar Peak
A Spatial Perspective on the Phenological Distribution of the Spring Woodland Caterpillar Peak
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春季林毛虫峰物候分布的空间视角
DOI：
10.1086/705241
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Albert B. Phillimore
中科院分区：
文献类型：
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作者：
Jack D. Shutt;M. Burgess;Albert B. Phillimore
一个经典的系统研究营养不匹配的重点是春季毛虫高峰的时间与林地雀形目鸟类的繁殖时间和生产力。大多数工作都是在单址橡树林地中进行的，很少有人知道这些见解如何推广到其他林地类型或跨越空间。在这里，我们提出了一个为期3年的研究结果的物种组成和时间分布的春季毛虫高峰在不同的树木类群跨越40林地网站在苏格兰2°纬度。我们使用分子条形码识别了62种毛虫，其中冬蛾（Operophtera brumata）最丰富，占样本的三分之一。栎属（Quercus sp.）和杨柳（Salix sp.）主持显着较高的毛虫丰度比其他树木类群，冬蛾表现出类似的趋势和不变的比例在树木类群。毛虫高峰期的物候是大致相似的树木类群之间。虽然纬度的影响不大，增加海拔增加毛虫高峰的高度和延迟时间为3.7天每100米。这些发现扩展了我们对不匹配如何在空间上发挥作用的理解，毛虫高峰期随海拔高度和树木类群的变化而变化，它们所拥有的毛虫资源不同。
A classic system for studying trophic mismatch focuses on the timing of the spring caterpillar peak in relation to the breeding time and productivity of woodland passerine birds. Most work has been conducted in single-site oak woodlands, and little is known about how insights generalize to other woodland types or across space. Here we present the results of a 3-year study on the species composition and temporal distribution of the spring caterpillar peak on different tree taxa across 40 woodland sites spanning 2° of latitude in Scotland. We used molecular barcoding to identify 62 caterpillar species, with winter moth (Operophtera brumata) being the most abundant, comprising one-third of the sample. Oak (Quercus sp.) and willow (Salix sp.) hosted significantly higher caterpillar abundances than other tree taxa, with winter moth exhibiting similar trends and invariantly proportionate across tree taxa. Caterpillar peak phenology was broadly similar between tree taxa. While latitude had little effect, increasing elevation increased the height of the caterpillar peak and retarded timing by 3.7 days per 100 m. These findings extend our understanding of how mismatch may play out spatially, with caterpillar peak date varying with elevation and tree taxa varying in the caterpillar resource that they host.