Biostratigraphic and macroevolutionary study of Antartic Neogene rediolarian faunas

南极新近纪红虫动物群的生物地层学和宏观进化研究

基本信息

批准号：
84744046
负责人：
Dr. David Lazarus
金额：
--
依托单位：
Museum für Naturkunde - Leibniz-Institut für Evolutions- und Biodiversitätsforschung (MfN)
依托单位国家：
德国
项目类别：
Infrastructure Priority Programmes
财政年份：
2008
资助国家：
德国
起止时间：
2007-12-31 至 2012-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/84744046?language=en
关键词：
Biostratigraphic macroevolutionary study Antartic Neogene

项目摘要

Antarctic Neogene radiolarians are one of the two main microfossil groups used to date Southern Ocean deep sea sediments and are also an extraordinarily complete and rich fossil record of species level evolutionary change in response to dramatically changing pelagic environments. Despite major improvements in species taxonomy and the recovery of numerous radiolarian rich sections in the last decades, the potential of these fossils for biostratigraphy and evolution research is underdeveloped, primarily due to incomplete use of taxonomic knowledge and incomplete recording of taxa occurrences. I propose to finish a new study, based on a now completed review and standardization of taxonomic concepts, currently being collected new, detailed, (nearly) full fauna data from several Antarctic sections, and (in this proposed year 3 of the project) analysis of this data using modern biostratigraphic and macroevolutionary tools (e.g. CONOP and the PBDB toolkit). The study will yield a new, much higher resolution radiolarian stratigraphy for dating Antarctic deep-sea sections, and a detailed documentation of this fauna’s evolution and response to climate change over the Neogene. The full occurrences data set will be made openly available for community study at the end of the project, while the revised taxonomy, including new taxonomic publications, is being incorporated into public websites and is supporting the development of digital taxonomic catalogs of microfossils for IODP (STP Recommendation 0601-09 and Consensus 0603-10; IODP project contracts for TNL development, 2008-2010 and other efforts via IODP's Paleo Coordination Group).

南极新近纪放射虫是用于测定南大洋深海沉积物年代的两个主要微化石群之一，也是极其完整和丰富的化石记录，记录了物种水平的进化变化，以应对急剧变化的中上层环境，尽管物种分类和海洋环境有了重大改进。尽管在过去几十年中恢复了许多放射虫丰富的部分，但这些化石用于生物地层学和进化研究的潜力尚未开发，这主要是由于分类学知识的不完全利用和类群发生的不完整记录。我建议完成一项新的研究，该研究基于现已完成的分类学概念的审查和标准化，目前正在从几个南极地区收集新的、详细的、（几乎）完整的动物群数据，并（在该项目的拟议第三年中）分析使用现代生物地层学和宏观进化工具（例如 CONOP 和 PBDB 工具包）对这些数据进行分析，该研究将产生一种新的、分辨率更高的放射虫地层学，用于测定南极深海剖面的年代。以及该动物群在新近纪的进化和对气候变化的响应的详细记录。完整的事件数据集将在项目结束时公开供社区研究，同时修订后的分类法，包括新的分类学出版物，也将被纳入其中。纳入公共网站，并支持开发 IODP 微化石数字分类目录（STP 建议 0601-09 和共识 0603-10；IODP 项目合同2008-2010 年 TNL 开发以及 IODP 古协调组的其他工作）。