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首页> 外文期刊>Conservation Biology >Recreational portage trails as corridors facilitating non-native plant invasions of the Boundary Waters Canoe Area Wilderness (USA)
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Recreational portage trails as corridors facilitating non-native plant invasions of the Boundary Waters Canoe Area Wilderness (USA)

机译：休闲走廊作为走廊，方便非本地植物入侵边界水域独木舟地区（美国）

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摘要

Wilderness areas are protected and valued in part for recreation; recreational use, however, can negatively impact these areas. In particular, recreational use can facilitate transport of non-native propagules and create open sites for establishment of non-native species. We examined the role of recreational portage trails in the introduction and establishment of non-native plants into the Boundary Waters Canoe Area Wilderness of northern Minnesota (US.A.). On 20 portages, we sampled non-native plant richness and cover at four distances (0, 10, 25, and 50 m) from trails. Non-native richness and cover were not related to distance from wilderness entry point. Non-native richness and cover were, however, negatively related to distance from trails. All six non-native species we observed were either directly on or within I m of trails. These results suggest that recreational trails act as corridors facilitating invasions of non-native plants into wilderness areas. It remains unclear, however, whether these effects are caused by dispersal of propagules, creation of bare ground, or changes in the native plant community.
机译：荒野地区受到保护，部分价值在于娱乐;但是，娱乐用途可能会对这些区域产生负面影响。尤其是，娱乐用途可以促进非本地繁殖体的运输，并为建立非本地物种创造开放的场所。我们研究了休闲运输路线在将非本地植物引入和建立明尼苏达州北部边界水域独木舟地区荒原中的作用（美国）。在20个港口，我们对非本地植物的丰富度进行了采样，并在距小径4个距离（0、10、25和50 m）处进行了覆盖。非本地的丰富度和掩盖度与到荒野入口的距离无关。但是，非本地的丰富度和掩盖度与到步道的距离呈负相关。我们观察到的所有六个非本地物种都直接在小径上或小径内。这些结果表明，休闲步道可作为走廊，促进非本地植物入侵荒野。但是，这些影响是否是由于繁殖体的散布，裸露地面的产生或本地植物群落的变化所致，目前还不清楚。

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