The influence of disturbance and habitat on the presence of non-native plant species along transport corridors
The influence of disturbance and habitat on the presence of non-native plant species along transport corridors
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DOI：
10.1016/j.biocon.2005.03.024
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发表时间：
2005-09-01
影响因子：
5.9
通讯作者：
Clevenger, AP
中科院分区：
文献类型：
--
作者：
Hansen, MJ;Clevenger, AP
运输走廊对周围栖息地的影响往往远远超出走廊的边缘。改变干扰制度，在植物群落沿着走廊边缘和车辆交通的传播和建立的外来入侵植物物种。我们比较了非本地植物物种的频率沿着公路和铁路，这些物种的能力，侵入草地和茂密的森林沿着这些走廊。我们测量了几个非本地植物物种的频率沿着样带0-150在从边缘的公路和铁路在草原和森林，以及在控制网站远离走廊。两个运输走廊有较高的频率比各自的控制网站的非本地物种。草原有较高的频率比森林栖息地的非本地物种，但频率之间没有差异的公路和铁路。非本地物种在草原沿着公路和铁路的频率高于在草原控制站点高达150在从走廊边缘，而在森林栖息地的频率沿着走廊高于森林控制站点只有10在从走廊边缘。有一个显着的非本地物种的频率随着距离的增加，在森林中的两个走廊，而草地上的非本地物种的频率没有显着的变化与距离走廊。这表明，走廊边缘和草地生境作为非本地物种的微生境，比森林更容易入侵，特别是如果受到干扰。我们的研究结果强调，在建设和维护过程中，特别是在草原栖息地和其他破碎化和栖息地丧失敏感的地区，最大限度地减少相邻的植物群落沿着公路和铁路的干扰的重要性。(c)2005爱思唯尔有限公司保留所有权利。
The impact from transportation corridors on surrounding habitat often reaches far beyond the edge of the corridor. The altered disturbance regime in plant communities along corridor edges and vehicle traffic facilitate the spread and establishment of invasive non-native plant species. We compared the frequency of non-native plant species along highways and railways and the ability of these species to invade grasslands and dense forests along these corridors. We measured the frequency of several non-native plant species along transects 0-150 In from the edge of highways and railways in grasslands and forests, as well as at control sites away from corridors. Both transportation corridors had higher frequency of non-native species than respective control sites. Grasslands had higher frequency of non-native species than forested habitats, but the frequency did not differ between the highways and the railways. The frequency of non-native species in grasslands along highways and railways was higher than at grassland control sites up to 150 In from the corridor edge, whereas the frequency in forested habitats along corridors was higher than at forested control sites up to only 10 In from the corridor edge. There was a significant decrease in the frequency of non-native species with increasing distance from both corridors in the forest, while grasslands showed no significant change in non-native species frequency with distance from corridors. This suggests that corridor edges and grassland habitats act as microhabitats for non-native species and are more prone to invasion than forests, especially if disturbed. Our results emphasize the importance of minimizing the disturbance of adjacent plant communities along highways and railways during construction and maintenance, particularly in grassland habitats and in areas sensitive to additional fragmentation and habitat loss. (c) 2005 Elsevier Ltd. All rights reserved.