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首页> 外文学位 >Effects of scale insects on forest dynamics in tropical montane oak forests of Veracruz, Mexico.
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Effects of scale insects on forest dynamics in tropical montane oak forests of Veracruz, Mexico.

机译：墨西哥韦拉克鲁斯州热带山地橡树林中，鳞片昆虫对森林动态的影响。

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摘要

The montane cloud forests of northeastern Mexico have a high concentration of endemism, and are increasingly vulnerable to climate change, deforestation, and habitat fragmentation. Ninety percent of the original montane cloud forest in Mexico has been lost. As habitat fragmentation becomes more pervasive throughout the world, our understanding of forest fragmentation has also grown more sensitive to context. The species interactions initiated with fragmentation, and post-fragmentation disturbance regimes may magnify the impacts of fragmentation. This dissertation research seeks to develop a better understanding of post-fragmentation pattern and processes in the montane oak cloud forests of northeastern Mexico.;Central to this goal is the documentation of a forest change occurring within these fragmented forests. An endemic scale insect, Stigmacoccus garmilleri, which typically occurs in low densities in the upper canopy of intact oak forests, has expanded throughout forest fragments within the oak forests of Chiconquiaco, Mexico.;This research focuses on how the high population densities of S. garmilleri may augment local diversity in fragmented habitat by providing a food source upon which other species depend. Of critical importance is how these scale insects, at the high densities that augment diversity, impact their host trees. The majority of scale insects are considered pests in agricultural settings. How the host oaks respond to scale determines not only the diversity of these forest fragments, but also their future persistence.;As part of this dissertation research, the potential for these fragmented forested areas to support beekeeping and lessen the dependence upon the agricultural land uses that are driving forest fragmentation are discussed. The sociecological context of deforestation and the promotion of beekeeping for the township of Chiconquiaco lends itself to critical examination of apicultural development. This case study in Veracruz state serves as a template for a more adaptive framework for implementing forest conservation beekeeping projects.
机译：墨西哥东北部的山地云雾森林特有度很高，并且越来越容易受到气候变化，森林砍伐和生境破碎化的影响。墨西哥原始山地云雾森林的百分之九十已经消失。随着生境破碎化在世界范围内越来越普遍，我们对森林破碎化的理解也变得对环境更加敏感。物种相互作用以碎片化和碎片化后的干扰机制引发，可能会放大碎片化的影响。本论文的研究旨在更好地了解墨西哥东北部山地橡树林中的后碎片化模式和过程。该目标的中心是这些碎片森林中发生的森林变化的文献资料。一种地方性规模的昆虫，Stigmacoccus garmilleri，通常发生在完整橡树林的上部冠层中的低密度环境中，现已在墨西哥奇孔基亚科的橡树林中遍及整个森林碎片。 garmilleri可以通过提供其他物种赖以生存的食物来源来增加零散生境中的局部多样性。至关重要的是这些昆虫如何以高密度增加多样性，影响其寄主树。在农业环境中，大多数鳞片昆虫被认为是有害生物。寄主橡树如何应对规模不仅决定了这些森林碎片的多样性，而且还决定了它们的未来持久性。作为本论文研究的一部分，这些零散的森林地区支持养蜂业并减少对农业土地利用的依赖的潜力讨论了造成森林碎片化的原因。奇孔基亚科镇的森林砍伐和养蜂业的社会学背景，使人们对养蜂业的发展进行了批判性的考察。韦拉克鲁斯州的这个案例研究为实施森林保护养蜂项目的更具适应性的框架提供了模板。

著录项

  • 作者

    Gamper, Heather A.;

  • 作者单位

    The Florida State University.;

  • 授予单位 The Florida State University.;
  • 学科 Biology Ecology.;Biology Entomology.;Geography.
  • 学位 Ph.D.
  • 年度 2012
  • 页码 129 p.
  • 总页数 129
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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