DISSERTATION RESEARCH: Demographic and Biogeographic History of Deciduous Forest Vertebrates of the Central United States

论文研究：美国中部落叶林脊椎动物的人口统计和生物地理学历史

• 批准号: 0422957
• 负责人: Ken Paige
• 金额: $ 1.2万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-06-01 至 2005-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0422957&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Demographic; Biogeographic; History

This project uses DNA variation to address the evolutionary history of two deciduous forest vertebrates, eastern chipmunks and white-footed mice, in the central US. During glacial maxima large areas of the central US were covered by an extensive ice sheet. Many species that currently inhabit these once ice-covered regions must have colonized from areas beyond the the ice. Dr. Kenneth Paige and Kevin Rowe will address how contemporary populations and communities in these regions were established. Genetic variation will indicate the number of population sources and the direction of colonizations. Multiple molecular markers from the nuclear and mitochondrial genomes can test various hypotheses about the role of selection and population dynamics in shaping genetic variation.The contemporary distribution of biological diversity cannot be understood without knowledge of how organisms responded to the geological and climatic history of Earth; these are central concerns to ecology and evolutionary biology. Results from this project will help recover how species have responded to known climatic changes and how communities are assembled over geological time.

该项目使用DNA变异来解决美国中部两种落叶林脊椎动物，东部花栗鼠和白足鼠的进化历史。 在冰川盛期，美国中部的大部分地区被大面积的冰盖覆盖。目前居住在这些曾经被冰层覆盖的地区的许多物种必须从冰层以外的地区定居下来。 肯尼斯·佩奇博士和凯文·罗将讨论这些地区的当代人口和社区是如何建立的。 遗传变异将指示种群来源的数量和殖民化的方向。 来自核和线粒体基因组的多个分子标记可以检验关于选择和种群动态在形成遗传变异中的作用的各种假设。如果不了解生物体如何对地球的地质和气候历史做出反应，就无法理解当代生物多样性的分布;这些是生态学和进化生物学的核心问题。 该项目的结果将有助于恢复物种如何应对已知的气候变化以及社区如何在地质时期组装。