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CAREER: Exploring environmental drivers of morphological change through phylogenetic paleoecology

职业：通过系统发育古生态学探索形态变化的环境驱动因素

基本信息

批准号：
1943082
负责人：
James Lamsdell
金额：
$ 53.27万
依托单位：
West Virginia University Research Corporation
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-07-01 至 2026-06-30
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1943082&HistoricalAwards=false
关键词：
CAREER Exploring environmental drivers morphological

项目摘要

Understanding what drives the evolution of new animal forms and the occupation of previously unused environments is critical for understanding the history of life on Earth. New forms arise through a process called heterochrony, where changes in the timing or speed of a species’ growth result in adults with either more juvenile-like or exaggerated adult-like characteristics. What is unclear is whether moving into new environments causes changes in development, or whether changes in development allow animals to move into new environments. This research explores the relationship between changes in animal traits and shifts in ecology to determine what drives the evolution of new species. The project will fund graduate and undergraduate research, and the results will be integrated into college classes. The research also will be used to engage middle school students in the study of geological processes and how they have changed Earth’s surface at varying temporal and spatial scales.Database, museum, and literature data will be used in concert with phylogenetic frameworks to generate a comprehensive view of patterns in ecological occupation, heterochronic trends, and evolutionary rates across a diverse set of aquatic arthropods. This will produce a synthesis of the rate and mode of morphological change with shifts in ecological occupation to determine the driving forces behind the development of novel phenotypes and factors mediating ecological expansion. The chief merit of the project is the integration of a hierarchical framework using phylogenetic relationships with ecological and phenotypic data from the fossil record. The development of a quantitative metric to evaluate heterochrony will permit direct comparison of heterochronic trends between clades for the first time. The project will support K-12 education by enriching undergraduate pre-service science teachers' preparation with high-quality lessons prepared by the Principal Investigator and a Master Teacher who will use this research to draw interest and provide real-world examples and data. The completed lessons will be available on a national K-12 educator clearinghouse. This award is co-funded with the Systematics and Biodiversity Sciences program (Division of Environmental Biology).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.

了解是什么推动了新动物形态的进化，以及对以前未使用的环境的占领，对于理解地球上生命的历史至关重要。新的形式是通过一个称为异时性的过程出现的，在这个过程中，一个物种生长的时间或速度的变化导致成年人具有更像少年或夸大的成年人特征。目前尚不清楚的是，动物进入新环境是否会引起发育的变化，或者发育的变化是否会使动物进入新环境。这项研究探讨了动物特征变化与生态变化之间的关系，以确定是什么推动了新物种的进化。该项目将资助研究生和本科生的研究，其结果将被纳入大学课程。该研究还将用于让中学生参与地质过程的研究，以及它们如何在不同的时间和空间尺度上改变地球表面。数据库，博物馆和文献数据将与系统发育框架相结合，以产生一个全面的观点，在生态占领，异时趋势和进化速度在一组不同的水生节肢动物的模式。这将产生一个综合的速度和模式的形态变化与生态占领的转变，以确定背后的新的表型和因素介导的生态扩张的发展的驱动力。该项目的主要优点是整合了一个层次框架，利用化石记录中的生态和表型数据与系统发育关系。发展的定量指标，以评估异时性将允许直接比较的异时性的趋势之间的分支的第一次。该项目将支持K-12教育，通过丰富本科职前科学教师的准备，由首席研究员和硕士教师编写高质量的课程，他们将利用这项研究来吸引兴趣并提供真实世界的例子和数据。完成的课程将在国家K-12教育者信息交换中心提供。该奖项是与系统学和生物多样性科学计划（环境生物学部）共同资助的。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。