LTREB: Population persistence in a variable world: spatiotemporal variation in climate and demography across the range of scarlet monkeyflower

LTREB：可变世界中的人口持久性：猩红猴花范围内气候和人口的时空变化

• 批准号: 2311414
• 负责人: Seema Sheth
• 金额: $ 60万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-06-01 至 2029-05-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2311414&HistoricalAwards=false
• 关键词: LTREB; Population; persistence; variable; world

This project seeks to understand how different climates influence the survival, growth, and reproduction of plant species. Understanding how survival, growth and reproduction influence how fast a population grows helps determine how vulnerable species are to climate change. The researchers will measure population growth rates across the range of the scarlet monkeyflower in the western United States over the next 10 years. The findings of this research will provide valuable insights into how populations can persist in the face of changing climates. This work will help land managers with programs to conserve rare plants, promote healthy ecosystems after wildfires, and restore stream habitats. In addition, the project will mentor and train recent college graduates from underrepresented groups.Populations can be buffered from temporal variability in climate if one or more demographic rates mitigate environmental variation in a way that promotes stability in population growth. Alternatively, populations might show variable population growth rates that track temporal variability in climate to capitalize on favorable conditions. It remains unclear how the propensity for climate buffering and climate tracking varies with life history, particularly under realistically varying environments, alters range-wide inferences of population dynamics when local populations differ in buffering and tracking capacity, and influences the likelihood that genetic adaptation and phenotypic plasticity facilitate population persistence in the face of climate extremes. To address these knowledge gaps, the researchers will collect range-wide demographic data over the next 10 years in the scarlet monkeyflower (Mimulus cardinalis), a plant that is found across different climates in western North America. Mimulus cardinalis is an ideal model for understanding population persistence and adaptation in a rapidly changing climate because the researchers can uniquely synthesize extensive observational and experimental datasets. The combination of large-scale and long-term demographic observations (21 populations over 10-21 years to date), experimental work in greenhouse and field common gardens, and genomic studies makes this a particularly powerful system for dissecting how historical and contemporary climate adaptation shape distribution and abundance.  Linking genotypes and phenotypes to demography across a broad spatial and temporal scale will reveal unforeseen insights into population persistence in the face of increasingly extreme climates.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目试图了解不同的气候如何影响植物物种的生存，生长和繁殖。了解生存，生长和繁殖如何影响人口增长的速度有助于确定脆弱物种的气候变化。研究人员将在未来10年内衡量美国西部猩红花的人口增长率。这项研究的发现将为面对不断变化的气候下的人口如何持续存在，为人们提供宝贵的见解。这项工作将帮助土地经理通过计划，以保护稀有植物，在野火后促进健康的生态系统以及恢复溪流栖息地。此外，如果一个或多个人口统计学率以一种促进人口增长的稳定性来减轻环境变化，则该项目将从代表性不足的群体中进行精神和培训最近的大学毕业生。另外，人口可能会显示出可变的人口增长率，以跟踪气候下暂时的变异性，以利用有利条件。目前尚不清楚气候缓冲和气候跟踪与生活史的变化如何，尤其是在现实变化的环境下，当当地种群在缓冲和跟踪能力方面有所不同，并影响遗传适应和表型可塑性在气候极端的情况下制备遗传适应和表型可塑性时，人口动态的推断如何改变了人口动态的推断。为了解决这些知识差距，研究人员将在接下来的10年中在猩红色的猴子花（Mimulus cardinalis）中收集范围范围的人口统计数据，这是一种在北美西部不同气候中发现的植物。 Mimulus cardinalis是在迅速变化的气候下了解种群持久性和适应性的理想模型，因为研究人员可以唯一综合广泛的观察和实验数据集。大规模和长期人口统计学观察（迄今为止10 - 21年的21种人口），温室和田间共同花园的实验性工作以及基因组研究的结合使这是剖析历史和当代气候适应性形状分布和抽象的特别强大的系统。在面对日益极端的气候下，将基因型和表型与人口统计联系起来，将揭示对人口持久性的见解。该奖项反映了NSF的法定任务，并被认为是通过基金会的知识分子和更广泛影响的审查标准来通过评估来通过评估来获得的支持。