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长距离分散（LDD）跨过海洋和不合适的栖息地（通常由风流）塑造的。与风路不相关的地理分布和不适合风向扩散的广泛分布物种的发生表明，可以通过其他方式（例如通过候鸟）来实现扩散。我们对LDD的了解及其对塑造全球植物多样性的影响仅限于模型案例，在这些情况下，风路可用于具有高分散能力的生物体。刘易斯（Lewis）和戈芬（Goffinet）将使用革命性的基因组测序技术，重建非模型全局分散历史，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。了解塑造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以及它们如何改变。高纬度地区代表了世界上最原始的生态系统，也代表了全球气候变化最脆弱的地区。刘易斯和戈芬特（Lewis and Goffinet）结合了最南端的智利角（Cape Horn Biospher）储备，将科学研究，现场保护，社区教育和生态旅游融为一体，以将公众介绍给高纬度的Bryophyte多样性，并有助于我们对这些生物体，其生态系统和全球植物分散的理解。