Traits data of naturalized and non-naturalized alien species of four Indonesian Botanic Gardens

The establishment of new botanic gardens in tropical regions highlights a need for weed risk assessment tools suitable for tropical ecosystems. The relevance of plant traits for invasion into tropical rainforests has not been well studied. Working in and around four botanic gardens in Indonesia where 590 alien species have been planted, we estimated the effect of four plant traits, plus time since species introduction, on: a) the naturalization probability and b) abundance (density) of naturalized species in adjacent native tropical rainforests; and c) the distance that naturalized alien plants have spread from the botanic gardens.  We found that specific leaf area (SLA) strongly differentiated 23 naturalized from 78 non-naturalized alien species (randomly selected from 577 non-naturalized species) in our study. These trends may indicate that exotics with high SLA benefit from at least two factors when establishing in tropical forests: high growth rates and occupation of forest ...热带地区新建植物园的实践凸显了适配热带生态系统的杂草风险评估工具的迫切需求。目前针对植物性状在热带雨林入侵过程中的作用尚未得到充分研究。 本研究以印尼境内4座已引种590种外来物种的植物园及其周边区域为研究对象，评估了4种植物性状以及物种引入时长对以下三方面的影响：a) 邻近原生热带雨林中归化外来物种的归化概率；b) 归化物种的多度（种群密度）；以及c) 归化外来植物从植物园向外扩散的距离。 研究发现，比叶面积（specific leaf area, SLA）可显著区分23种归化外来物种与78种非归化外来物种（后者从577种非归化外来物种中随机选取）。上述趋势表明，比叶面积较高的外来物种在热带森林定植过程中，可至少通过两种机制获益：较高的生长速率以及对森林……