LTREB: Integrating Long-term Demographic Data and Repeated Genetic Sampling for Viability Analysis of Natural and Restored Populations of Pitcher's Thistle

LTREB：整合长期人口统计数据和重复基因采样，对猪笼草自然和恢复种群的生存能力进行分析

• 批准号: 0516058
• 负责人: Kayri Havens
• 金额: $ 29.98万
• 依托单位: Chicago Horticultural Society
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0516058&HistoricalAwards=false
• 关键词: LTREB; Integrating; Long; term; Demographic

Seven populations of the federally-listed threatened Pitcher's thistle (Cirsium pitcheri), a rare plant restricted to the shorelines of the western Great Lakes, are being assessed for long-term population viability. Our research brings together a long-term demographic data set, repeated molecular genetic sampling and an assessment of quantitative trait variation to assess population viability and extinction risk of natural and restored plant populations. The fundamental questions addressed in this project are: (1) Does population viability analysis accurately predict population trends and extinction probabilities; and (2) Do restored populations follow a similar evolutionary trajectory as natural populations, i.e. do demographic and genetic parameters differ between restored and natural populations? Support from NSF will continue long-term data collection and expand modeling to integrate demographic and genetic variation of multiple restored and natural populations of C. pitcheri. This will greatly improve the robustness and applicability of our research toward understanding how long-term demographic variability affects population viability, as well as enhance restoration and management of this threatened species. Despite the need for long-term demographic data and repeated genetic analysis to accurately model population viability, few such data sets exist, and ours represents a unique combination for restored and natural populations of a threatened species. Our work also meets federal recovery planning objectives for research and restoration of this species.

七个人口的联邦上市的威胁投手的蓟（蓟pitcheri），一种罕见的植物仅限于西部五大湖的海岸线，正在评估长期人口的生存能力。 我们的研究汇集了长期的人口统计数据集，重复的分子遗传采样和数量性状变异的评估，以评估自然和恢复植物种群的种群生存力和灭绝风险。该项目解决的基本问题是：（1）种群生存力分析能否准确预测种群趋势和灭绝概率;（2）恢复种群是否遵循与自然种群相似的进化轨迹，即恢复种群和自然种群之间的人口统计和遗传参数是否不同？ 来自NSF的支持将继续长期的数据收集和扩展建模，以整合多个恢复和自然种群的C。pitcheri。 这将大大提高我们研究的稳健性和适用性，以了解长期人口变化如何影响种群生存能力，以及加强对这一受威胁物种的恢复和管理。 尽管需要长期的人口统计数据和重复的遗传分析，以准确地模拟人口的生存能力，很少有这样的数据集存在，我们的代表了一个独特的组合恢复和自然种群的受威胁物种。我们的工作也符合联邦恢复计划的研究和恢复这个物种的目标。