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首页> 外文期刊>Wetlands >The Nativity and Distribution of the Cryptic Invader Phalaris arundinacea (Reed Canarygrass) in Riparian Areas of the Columbia and Missouri River Basins
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The Nativity and Distribution of the Cryptic Invader Phalaris arundinacea (Reed Canarygrass) in Riparian Areas of the Columbia and Missouri River Basins

机译：哥伦比亚和密苏里河流域沿岸地区的隐性入侵者Ph草（芦苇金丝雀）的诞生和分布

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摘要

Cryptic invaders are inherently difficult to study due to morphological similarity with native lineages of the same species or genus. Wetland and riparian systems are particularly prone to plant invasions, and have been impacted by a number of widespread cryptic invaders such as Phalaris arundinacea (reed canarygrass). Here we combine molecular genetic analyses with species distribution modeling to assess the nativity of Phalaris and determine potential drivers of non-native Phalaris invasion in riparian areas across a large region of the semiarid northwestern USA. Based on our genetic analyses, we found that throughout our study region Phalaris is largely non-native, and no modern-day samples from our study region were of native North American origin. At least half of the four species distribution models suggested that non-native Phalaris invasion across the region was associated with warmer temperatures, more growing days, wetter summers, drier winters, higher nitrogen levels, shallower stream slopes, and at sites closer to roads and without a history of grazing. These findings can be used to determine the best locations for targeted monitoring. Furthermore, there is the potential for increased Phalaris invasion with climate change-induced temperature increases.
机译：由于与相同物种或属的本地血统的形态相似性，隐性入侵者本来就很难研究。湿地和河岸系统特别容易受到植物的侵袭，并受到许多广泛的隐性入侵者的影响，例如Ph草（Phalaris arundinacea）（芦苇金丝雀）。在这里，我们将分子遗传学分析与物种分布模型相结合，以评估Ph草的诞生，并确定整个美国半干旱西北部河岸地区非本地Ph草入侵的潜在驱动因素。根据我们的遗传分析，我们发现整个研究区域中的ala蒲属植物大部分是非本地的，并且没有来自研究区域的现代样品是源自北美的原产地。至少有四种物种分布模型中的一半表明，该地区的非本地Ph虫入侵与温度升高，生长天数增加，夏天湿润，冬季干燥，氮含量较高，溪流坡度较浅以及靠近道路和河床的地点有关。没有放牧史这些发现可用于确定目标监视的最佳位置。此外，随着气候变化引起的温度升高，有可能增加Ph鱼的入侵。

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  • 来源
    《Wetlands》 |2019年第1期|55-66|共12页
  • 作者

    Kettenring Karin M.; Menuz Diane R.; Mock Karen E.;

  • 作者单位

    Utah State Univ, Ecol Ctr, Logan, UT 84322 USA|Utah State Univ, Dept Watershed Sci, Logan, UT 84322 USA;

    Utah State Univ, Ecol Ctr, Logan, UT 84322 USA|Utah State Univ, Dept Watershed Sci, Logan, UT 84322 USA|Utah Geol Survey, Salt Lake City, UT USA;

    Utah State Univ, Ecol Ctr, Logan, UT 84322 USA|Utah State Univ, Dept Wildland Resources, Logan, UT 84322 USA;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Climate change; Dispersal; Genetics; Invasive species; Nitrogen; Species distribution modeling;

    机译：气候变化;分散;遗传;入侵物种;氮;物种分布模拟;

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