DISSERTATION RESEARCH: The Consequences of Global Events on Vertebrate Biodiversity: the Paleozoic Actinopterygian Radiation

论文研究：全球事件对脊椎动物生物多样性的影响：古生代放线鱼辐射

• 批准号: 1011002
• 负责人: Michael Coates
• 金额: $ 1.5万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-06-01 至 2012-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1011002&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Consequences; Global; Events

Global events such as mass extinctions have lasting impacts on biodiversity: Actinopterygians (ray-finned fishes) are currently the most abundant and diverse group of living vertebrates; however, this situation only arose after previously dominant groups suffered major losses coincident with the Paleozoic Hangenberg mass extinction event. This project will examine whether: (1) the Hangenberg extinction event, associated with climatic changes, permanently restructured global vertebrate biodiversity; (2) actinopterygians underwent a large-scale radiation after an extinction bottleneck; (3) actinopterygian diversification occurred in response to vacated niches in post-extinction ecosystems, leading to the widespread evolution of novel functional morphologies. This project will assemble comprehensive vertebrate occurrence databases, reconstruct new phylogenies, and analyze the occupation/reoccupation of vertebrate morphospace. Investigation of actinopterygian evolution is vital for interpreting current vertebrate biodiversity because these fishes are a major component of modern ecosystems. Phylogenetic, morphological, and diversity data will be placed in open repositories, providing starting points for further studies of vertebrate macroevolution. The results will be valuable for designing science curricula and other accessible programs because of paleontology's broad appeal - instilling in the general public an appreciation for broader concepts including evolution, biodiversity loss and turnover, and large-scale global change.

诸如大规模灭绝等全球事件对生物多样性产生了持久的影响：Actinopterygians（射线污染鱼类）目前是最丰富和多样化的活脊椎动物；但是，这种情况只有在以前占主导地位的群体与古生代Hangenberg的大规模灭绝事件相吻合之后才出现。该项目将检查：（1）与气候变化相关的Hangenberg灭绝事件，永久重组全球脊椎动物生物多样性； （2）Actinopterygians在灭绝瓶颈后接受了大规模的辐射； （3）在爆发后生态系统中响应空的壁ni，出现了acttergergian多样化，导致新型功能形态的广泛演变。该项目将组装全面的脊椎动物出现数据库，重建新的系统发育，并分析脊椎动物形态空间的职业/重新关注。对肌动症进化的研究对于解释当前的脊椎动物生物多样性至关重要，因为这些鱼是现代生态系统的主要组成部分。系统发育，形态和多样性数据将放置在开放式存储库中，为进一步研究脊椎动物宏观进化提供了起点。由于古生物学的广泛吸引力，该结果对于设计科学课程和其他可访问的课程将很有价值 - 在公众中灌输对更广泛的概念，包括进化，生物多样性损失和周转以及大规模的全球变化。