Seedling distribution and potential persistence of the exotic shrub Lonicera maackii in fragmented forests.
Seedling distribution and potential persistence of the exotic shrub Lonicera maackii in fragmented forests.
复制标题
破碎森林中外来灌木忍冬的幼苗分布和潜在持久性。
DOI：
10.2307/2426353
复制
发表时间：
1995
影响因子：
0.6
通讯作者：
Norbert G. Goessling
中科院分区：
文献类型：
--
作者：
J. Luken;Norbert G. Goessling
-外来灌木 Lonicera maackii (Rupr.) Maxim 成功入侵东部落叶林。有详细记载，但对该物种的种子发芽或幼苗建立知之甚少。我们的研究表明，大多数种子都是在非休眠状态下传播的。 88 天后，未经处理的种子的平均累积发芽率在光照下为 54-81%，在黑暗下为 31-55%。沿着从森林边缘延伸到森林内部的横断面，幼苗密度和光利用率同时下降。平均幼苗密度范围为 5-328 幼苗/平方英里。森林内部的间隙形成并不像边缘的存在那样有利于幼苗的建立。尽管如此，这种侵入性灌木可以在各种光照环境中生长幼苗
-Successful invasion of eastern deciduous forests by the exotic shrub Lonicera maackii (Rupr.) Maxim. is well-documented, but little is known about seed germination or seedling establishment in this species. Our research suggested that most seeds are dispersed in a nondormant condition. After 88 days, mean cumulative germination percentages of untreated seeds ranged from 54-81% in light and from 31-55% in dark. Seedling density and light availability declined in parallel along transects extending from forest edges to forest interiors. Mean seedling densities ranged from 5-328 seedlings/mi2. Gap formation in forest interiors was not as conducive to seedling establishment as was the presence of edges. Still, this invasive shrub can establish seedlings throughout a wide range of light environments in