Dissertation Research: Resolving bipolar phylogeographic histories in dispersal limited mosses: a RAD-Seq approach

论文研究：解决分散有限苔藓中的双极系统发育地理学历史：RAD-Seq 方法

• 批准号: 1311405
• 负责人: Bernard Goffinet
• 金额: $ 1.98万
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-06-15 至 2015-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1311405&HistoricalAwards=false
• 关键词: Dissertation; Research; Resolving; bipolar; phylogeographic

The geographic distribution of many plants is shaped by long distance dispersal (LDD) across oceans and unsuitable habitats, typically by wind currents. Geographic distributions that do not correlate with wind paths and the occurrence of widely distributed species not suited for wind dispersal suggests, however, that dispersal may be accomplished by other means, such as by migratory birds. Our knowledge of LDD and thus its affect on shaping global floristic diversity is limited to model cases where wind paths are available for organisms with high dispersal ability. Lewis and Goffinet will use revolutionary genome sequencing techniques, to reconstruct non-model global dispersal histories and assess the frequency and significance of these events on the biodiversity of pristine high latitude regions. Understanding the processes that shape biodiversity allow us to better understand how the ecosystems we know have come to be, and how they may change. High latitude regions represent some of the world?s most pristine ecosystems, but also the most vulnerable ones to global climate change. In conjunction with the Cape Horn Biosphere Reserve of Southernmost Chile, Lewis and Goffinet are integrating scientific investigation, in-situ conservation, community education, and ecotourism to introduce the public to high latitude bryophyte diversity and contribute to our understanding of these organisms, their ecosystems, and global plant dispersal.

许多植物的地理分布是由跨越海洋和不适宜栖息地的长距离扩散（LDD）形成的，通常是由风流形成的。然而，与风路径无关的地理分布和广泛分布的物种不适合风传播的发生表明，传播可能是通过其他方式完成的，例如候鸟。我们的知识LDD，从而其对塑造全球植物多样性的影响是有限的，以模型的情况下，风的路径可用于生物具有高扩散能力。刘易斯和Goffinet将使用革命性的基因组测序技术，重建非模型的全球扩散历史，并评估这些事件对原始高纬度地区生物多样性的频率和意义。了解形成生物多样性的过程使我们能够更好地了解我们所知道的生态系统是如何形成的，以及它们可能如何变化。高纬度地区代表了世界的一些？中国是最原始的生态系统，但也是最容易受到全球气候变化影响的生态系统。与智利最南端的合恩角生物圈保护区合作，刘易斯和戈菲内正在整合科学调查，就地保护，社区教育和生态旅游，向公众介绍高纬度britte多样性，并有助于我们了解这些生物，它们的生态系统和全球植物扩散。