Is Pinus radiata invading the native vegetation in central Chile?: Demographic responses in a fragmented forest
Is Pinus radiata invading the native vegetation in central Chile?: Demographic responses in a fragmented forest
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DOI：
10.1007/s10530-004-0740-5
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发表时间：
2005-03-01
影响因子：
2.9
通讯作者：
Simonetti, JA
中科院分区：
文献类型：
--
作者：
Bustamante, RO;Simonetti, JA
森林破碎化促进了外来物种的入侵。如果森林碎片被外来物种的种植园所包围，这种威胁可能特别严重，如辐射松，一种侵略性的殖民者和不耐荫的树木，已经成功地入侵了南半球的几个本地生态系统。在这项研究中，我们实验测试，如果一个成功的幼苗建立的条件P.辐射满足在沿海Maulino森林，智利中部的地方性片段森林。结果表明，种子分散到原生林，但幼苗建立只发生在边缘。我们的结论是，这种外来物种没有入侵到目前为止的原生森林。然而，我们建议进行种子雨和幼苗建立在长期的评估，以监测这种外来物种的命运在破碎的智利中部的原生森林。
Forest fragmentation facilitates the invasion of exotic species. This threat may be especially severe if forest fragments are surrounded by plantations of exotic species like Pinus radiata, an aggressive colonizer and shade-intolerant tree that has invaded successfully several native ecosystems of the southern hemisphere. In this study, we experimentally tested if the conditions of a successful seedling establishment P. radiata are fulfilled at the Coastal Maulino forest, an endemic fragmented forest of central Chile. Results demonstrated that seeds are dispersed into the native forests, however seedling establishment occurs only at the edges. We conclude that this exotic species is not invading native forests up to date. However, we suggest to conduct evaluations of seed rain and seedling establishment in the long term, in order to monitor the fate of this exotic species in fragmented native forest of Central Chile.