Narimanov Nijat, Kempel Anne, van Kleunen Mark, Entling Martin H
iES Landau, Institute for Environmental Sciences, Department of Ecosystem Analysis, University of Koblenz-Landau, 76829 Landau, Germany.
Institute of Plant Sciences, Department of Community Ecology, University of Bern, 3013 Bern, Switzerland.
Biol Invasions. 2021;23(1):1-6. doi: 10.1007/s10530-020-02348-9. Epub 2020 Sep 7.
The dwarf spider (Araneae: Linyphiidae), native to North America, has expanded its range over large parts of Europe within less than fifty years. It is notable for occurring in a wide range of mostly agricultural habitats, while most other invasive spiders in Europe are associated with human buildings. As in other invasive invertebrates and plants, the tremendous colonisation success of might be related to anthropogenic habitat disturbance. Here we aim to test if the invasion success of in Europe is associated with high tolerance towards soil disturbance. We sampled spiders from eight grasslands experimentally disturbed with superficial soil tillage and eight undisturbed grasslands without tillage. Opposite to our expectation, densities decrease sharply with soil disturbance. This is in contrast to several native species such as , which becomes more abundant in the fields after superficial soil tillage. Our study suggests that invasion success of is not connected to a ruderal strategy. The ecological and evolutionary processes behind colonisation success of need to be further investigated.
矮蜘蛛（蜘蛛目：皿蛛科）原产于北美，在不到五十年的时间里，其分布范围已扩展至欧洲大部分地区。它值得注意之处在于，它出现在范围广泛的大多为农业的栖息地中，而欧洲的大多数其他入侵蜘蛛都与人类建筑有关。与其他入侵无脊椎动物和植物一样，[此处原文有缺失信息]的巨大定殖成功可能与人为栖息地干扰有关。在此，我们旨在测试[此处原文有缺失信息]在欧洲的入侵成功是否与对土壤干扰的高耐受性相关。我们从八块经表层土壤耕作进行实验性干扰的草地和八块未经耕作的未受干扰草地中采集蜘蛛样本。与我们的预期相反，[此处原文有缺失信息]的密度随着土壤干扰而急剧下降。这与几种本土物种如[此处原文有缺失信息]形成对比，后者在表层土壤耕作后的田地中变得更为丰富。我们的研究表明，[此处原文有缺失信息]的入侵成功与杂草丛生策略并无关联。[此处原文有缺失信息]定殖成功背后的生态和进化过程需要进一步研究。
