Phototropism of Whole Trees: Effects of Habitat and Growth Form
Phototropism of Whole Trees: Effects of Habitat and Growth Form
复制标题
全树的向光性：栖息地和生长形式的影响
DOI：
10.2307/2425951
复制
发表时间：
1986
期刊：
影响因子：
--
通讯作者：
C. Loehle
中科院分区：
文献类型：
--
作者：
C. Loehle
向光性适用于整个树木以及顶端分生组织的假设进行了测试。这一假设是正确的，但有重要的修改：（1）冠层出露的物种表现出很小的向光性反应;（2）河边的物种表现出显着更多的响应比高地物种。成本和学习的好处提供了一个进化的解释，这些差异。外推的成本/效益模型产生预测什么样的栖息地可能会选择向光性反应。
The hypothesis that phototropism applies to entire trees as well as to apical meristems was tested. The hypothesis was correct but with important modifications: (1) canopy emergent species exhibit very little phototropic response; (2) streamside species exhibit significantly more response than upland species. Costs and benefits of learning are shown to provide an evolutionary explanation for these differences. Extrapolation of the cost/benefit model yields predictions about what habitats are likely to select for phototropic response.