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首页> 外文期刊>Oecologia >Long-term dynamics of the distribution of the invasive Argentine ant, Linepithema humile, and native ant taxa in northern California
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Long-term dynamics of the distribution of the invasive Argentine ant, Linepithema humile, and native ant taxa in northern California

机译：北部加利福尼亚州的入侵性阿根廷蚂蚁，Linepithema humile和本地蚂蚁类群分布的长期动态

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摘要

Invasive species, where successful, can devastate native communities. We studied the dynamics of the invasive Argentine ant, Linepithema humile, for 7 years in Jasper Ridge, a biological preserve in northern California. We monitored the distributions at the hectare scale of native ant taxa and L. humile in the spring and fall from 1993 to 1999. We also studied the invasion dynamics at a finer resolution by searching for ants in 1-m2 plots. Our results are similar at both scales. The distributions of several native species are not random with regard to L. humile; the distributions of several epigeic species with similar habitat affinities overlap much less frequently than expected with the distribution of L. humile. We found that season had a significant influence on the distributions of L. humile and several native taxa. Over the 7-year period, L. humile has increased its range size in Jasper Ridge largely at the expense of native taxa, but there is seasonal and yearly variation in this rate of increase. Studies of invasions in progress which sample across seasons and years may help to predict the spread and effects of invasive species.
机译：成功的入侵物种会破坏当地社区。我们在贾斯珀岭（Jasper Ridge）（加利福尼亚北部的生物保护区）研究了入侵阿根廷蚂蚁Linepithema humile的动力学长达7年。我们在1993年至1999年的春季和秋季对原生蚂蚁类群和L. humile的公顷规模分布进行了监测。我们还通过在1-m2的图上搜索蚂蚁，以更精细的分辨率研究了入侵动力学。我们的结果在两个尺度上都是相似的。几个本地物种的分布在人参中不是随机的。具有相似栖息地亲和力的几种大型物种的分布重叠的频率比人为L. humile的分布重叠的频率要少得多。我们发现，季节对L. humile和几种本地分类单元的分布有重大影响。在过去的7年中，L。humile在贾斯珀里奇（Jasper Ridge）扩大了射程范围，但以原生类群为代价，但这种增加率存在季节性和逐年变化。对入侵进行研究的季节和年份可能会有助于预测入侵物种的扩散和影响。

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  • 来源
    《Oecologia》 |2001年第1期|123-130|共8页
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  • 作者单位

    Department of Biological Sciences Stanford University Stanford CA 94305-5020 USA;

    Department of Biological Sciences Stanford University Stanford CA 94305-5020 USA;

    Department of Biological Sciences Stanford University Stanford CA 94305-5020 USA;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Biological invasions Invasive species Species distributions Linepithema humile;

    机译：生物入侵外来入侵物种物种分布;

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