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Influence Of Soil Disturbance and Fire on Caesar's Weed (Urena lobata) Invasion in Pine Flatwoods

机译：土壤扰动和火势对松材材凯撒杂草入侵的影响

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摘要

Novel disturbances can increase the vulnerability of pine flatwoods to exotic species such as Caesar's weed (Urena lobata), a plant that has invaded many ecosystems. To understand Caesar's weed response to disturbance, a factorial field manipulation was used to quantify invasion success. Influence of feral swine (Sus scrofa) on the presence of seeds in the area was analyzed. The effect of heat on Caesar's weed germination was also quantified. A winter fire and mechanical soil disturbance had no statistical effect on the spread of Caesar's weed. However, in feral swine disturbed soils Caesar's weed was more likely to be husked and experience less competition from seeds of other species. Low levels of seed heating increased germination. This data can provide information about the influences of fire and soil disturbances on the spread of Caesar's weed, as well as how fire intensity levels can affect the spread of invasive Caesar's weed.
机译：新的干扰会增加松木扁材对诸如凯撒杂草（Urena lobata）等外来物种的脆弱性，这种植物入侵了许多生态系统。为了了解凯撒的杂草对干扰的反应，使用阶乘场操作来量化入侵成功率。分析了野猪（Sus scrofa）对该区域种子的存在的影响。热量对凯撒杂草萌发的影响也被量化。冬季大火和机械土壤扰动对凯撒杂草的传播没有统计学影响。但是，在受野猪干扰的土壤中，凯撒杂草更容易被剥壳，与其他物种种子的竞争也较少。较低的种子加热水平会提高发芽率。这些数据可以提供有关火势和土壤扰动对凯撒杂草蔓延的影响以及火势水平如何影响凯撒入侵杂草蔓延的信息。

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  • 作者

    Hagood, Daniel Harrison.;

  • 作者单位

    Florida Atlantic University.;

  • 授予单位 Florida Atlantic University.;
  • 学科 Ecology.
  • 学位 M.S.
  • 年度 2017
  • 页码 44 p.
  • 总页数 44
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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