International Research Fellowship Program: Connecting Genes to Ecosystems

国际研究奖学金计划：连接基因与生态系统

• 批准号: 0301633
• 负责人: Jason Fridley
• 金额: --
• 依托单位: Fridley Jason D
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-08-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0301633&HistoricalAwards=false
• 关键词: International; Research; Fellowship; Program; Connecting

0301633FridleyThe International Research Fellowship Program enables U.S. scientists and engineers to conduct three to twenty-four months of research abroad. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad.This award will support a fourteen month research fellowship (within a duration of 36 months) by Dr. Jason D. Fridley to work with Dr. J. P. Grimes at the University of Sheffield in the United Kingdom.This project involves a suite of experiments focused on identifying the key processes by which genetic diversity maintains local species diversity. The research will address several questions: For which traits is genetic variation most important for population persistence? How is this genetic variation maintained locally; are there necessary tradeoffs between selection pressures for protecting tissues (from grazing or pathogen attack) versus those favoring rapid tissue proliferation? The results could indicate that because of such adaptive tradeoffs, population persistence in heterogeneous environments requires sufficient levels of genetic variation. The work will thus help identify the processes through which genetic variation controls community and ecosystem properties potentially affecting a wide variety of terrestrial plant communities.

Fridley国际研究奖学金计划使美国科学家和工程师能够在国外进行三到二十四个月的研究。 该计划的奖项提供了联合研究的机会，以及使用独特或互补的设施，专业知识和国外的实验条件。该奖项将支持博士14个月的研究奖学金（在36个月的期限）。弗里德利与英国谢菲尔德大学的J. P.格里姆斯博士合作。该项目涉及一系列实验，重点是确定遗传多样性维持当地物种多样性的关键过程。 这项研究将解决几个问题：哪些性状的遗传变异对种群持久性最重要？ 这种遗传变异如何在局部维持;保护组织（免受放牧或病原体攻击）的选择压力与有利于组织快速增殖的选择压力之间是否存在必要的权衡？ 这些结果可能表明，由于这种适应性权衡，在异质环境中的种群持久性需要足够的遗传变异水平。 因此，这项工作将有助于确定遗传变异控制可能影响各种陆地植物群落的群落和生态系统特性的过程。