Potential Impact of an Exotic Plant Invasion on Both Plant and Arthropod Communities in a Semi-natural Grassland on Sugadaira Montane in Japan
Potential Impact of an Exotic Plant Invasion on Both Plant and Arthropod Communities in a Semi-natural Grassland on Sugadaira Montane in Japan
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DOI：
10.11178/jdsa.12.52
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Yukie Sato;Y. Mashimo;R. Suzuki;A. Hirao;Etsuro Takagi;Ryuji Kanai;Daisuke Masaki;Miyuki Sato;R. Machida
中科院分区：
文献类型：
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作者：
Yukie Sato;Y. Mashimo;R. Suzuki;A. Hirao;Etsuro Takagi;Ryuji Kanai;Daisuke Masaki;Miyuki Sato;R. Machida
植物群落与节肢动物群落相互作用密切，因此，入侵植物不仅可以改变植物群落，还可能对节肢动物群落产生直接或间接的影响。在这里，我们专注于外来的巨大豚草，这是一个严重的入侵杂草在日本。最近，外来植物入侵并占据了杉平山地研究中心（长野县，日本）的半天然草地的一部分。我们试图评估入侵植物对植物和节肢动物群落的潜在影响，通过比较植物和节肢动物的群落组成，丰富度，物种丰富度和多样性指数之间的地区，外来大豚草入侵和未入侵，分别称为入侵区和参考区。我们发现显着差异的植物和节肢动物群落组成的地区之间。入侵区植物物种丰富度较低。然而，丰富的节肢动物，包括草食动物是较高的入侵区相比，参考区的期望，植物入侵减少节肢动物的丰度和多样性。我们讨论了意外结果的潜在原因。
Plant and arthropod communities interact closely with one another, therefore, invasive plants can alter not only plant communities, but may also have direct and indirect effects on arthropod communities. Here, we focus on the exotic giant ragweed, which is a serious invasive weed in Japan. Recently, the exotic plant invaded and has dominated part of a semi-natural grassland in Sugadaira Montane Research Center (Nagano Prefecture, Japan). We attempted to evaluate the potential impact of the invasive plant on both plant and arthropod communities by comparing the community composition, abundance, species richness and diversity indices of plants and arthropods between areas where the exotic giant ragweed had and had not invaded, referred to as the invaded and reference areas respectively. We found significant differences in plant and arthropod community compositions between the areas. Plant species richness was lower in the invaded area as predicted. However, the abundance of arthropods including herbivores was higher in the invaded area compared to the reference area in contrast to the expectation that plant invasions reduce arthropod abundance and diversity. We discuss potential causes of the unexpected results.