Earth Sciences Postdoctoral Research Fellowship Award

地球科学博士后研究奖学金

基本信息

批准号：
9505216
负责人：
Bruce Lieberman
金额：
$ 7.2万
依托单位：
Fellowships
依托单位国家：
美国
项目类别：
Fellowship Award
财政年份：
1995
资助国家：
美国
起止时间：
1995-06-01 至 1999-05-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9505216&HistoricalAwards=false
关键词：
Earth Sciences Postdoctoral Research Fellowship

项目摘要

EAR-9515216 Lieberman, Bruce S. The proposed research addresses the fundamental problem of the role that ecological communities play in governing the evolution of life on earth. The Cambrian radiation is ideally suited as a paleontological system for studying this process because of the rapid pace of diversification, and because it marks the first appearance of marine communities and complex ecosystems containing diverse animals. To explore the relationship between paleoecological and evolutionary patterns and processes during the Cambrian, the Fellow will compare those patterns with those documented from later time periods while considering the environmental changes that accompanied the radiation. Specifically, did the evolutionary rules governing the rapid Cambrian radiation when complex communities were absent differ fundamentally from rules that operated later when communities were well established? The Fellow will draw upon his own expertise from the study of Devonian fossil lineages; he will apply paleoenvironmental analyses and multivariate statistical analyses of data on species distributions to identify paleocommunities and recurrent assemblages, and determine if they are stable or fluctuating with time. The study will increase understanding of the unique event in Earth history when animals began to diversify, and it will elucidate the role communities play in diversification and extinction.

EAR-9515216 Lieberman，BruceS。拟议的研究解决了生态群落在管理地球生命进化中所起的作用的基本问题。由于多元化的速度快速，寒武纪辐射非常适合研究这一过程，并且因为它标志着海洋群落和含有多种动物的复杂生态系统的首次出现。为了探索寒武纪期间古生态和进化模式和过程之间的关系，该研究员将将这些模式与后来期间记录的模式进行比较，同时考虑伴随辐射的环境变化。具体来说，当缺乏复杂社区的迅速辐射的进化规则与后来在社区建立良好时执行的规则有差异时，是否存在迅速的寒武纪辐射？这位家伙将从研究泥盆纪化石谱系的研究中借鉴自己的专业知识。他将对物种分布的数据进行古环境分析和多元统计分析，以识别古社区和复发的组合，并确定它们是否稳定或随着时间的推移而波动。这项研究将增加对动物开始多样化的地球历史中独特事件的理解，并将阐明社区在多元化和灭绝中的作用。