Flowering range changes across an elevation gradient in response to warming summer temperatures
Flowering range changes across an elevation gradient in response to warming summer temperatures
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DOI：
10.1111/j.1365-2486.2008.01831.x
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发表时间：
2009-05-01
影响因子：
11.6
通讯作者：
Bertelsen, C. David
中科院分区：
文献类型：
--
作者：
Crimmins, Theresa M.;Crimmins, Michael A.;Bertelsen, C. David
许多研究表明，植物对温度变暖的反应，无论是在物候事件的时间和范围转移的进步。山脉梯度是研究物种分布范围变化的理想实验室。在这项研究中，363种植物在开花收集在五个部分跨越1200米（4158英尺）的海拔梯度，我们寻找物种开花范围的变化在20年的时间。93种（25.6%）表现出显着的变化，在海拔高度，他们花从上半年到下半年的记录，其中许多变化发生在较高的海拔。表现出这种变化的物种多为多年生植物。有趣的是，虽然开花范围的许多变化是特定于较高的海拔，范围的变化发生在整个梯度。本研究报告的变化与整个区域夏季气温的显著上升同时发生，并与地球仪周围观察到的变化一致。
Many studies have demonstrated plant response to warming temperatures, both as advancement in the timing of phenological events and in range shifts. Mountain gradients are ideal laboratories for studying species range changes. In this study of 363 plant species in bloom collected in five segments across a 1200 m (4158 ft) elevation gradient, we look for changes in species flowering ranges over a 20-year period. Ninety-three species (25.6%) exhibited a significant change in the elevation at which they flowered from the first half to the second half of the record, with many of these changes occurring at higher elevations. Most of the species exhibiting the changes were perennial plants. Interestingly, though many changes in flowering range were specific to higher elevations, range changes occurred all across the gradient. The changes reported in this study are concurrent with significant increases in summer temperatures across the region and are consistent with observed changes around the globe.