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RUI: Paleobiology of the Eocene Giraffe Fossil Locality: Response of an Arctic Ecosystem to a Greenhouse Climate

RUI：始新世长颈鹿化石产地的古生物学：北极生态系统对温室气候的响应

基本信息

批准号：
1725265
负责人：
Peter Siver
金额：
$ 22.68万
依托单位：
Connecticut College
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2017
资助国家：
美国
起止时间：
2017-09-01 至 2021-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1725265&HistoricalAwards=false
关键词：
RUI Paleobiology Eocene Giraffe Fossil

项目摘要

Global warming is proceeding at an unprecedented rate and one that will ultimately result in large-scale reorganizations of ecosystems worldwide with greater impacts at high latitudes and with shifts in climate patterns. Responses of these northern ecosystems could be varied: some organisms may disappear, some may thrive, and still others migrate to these Arctic regions. Although the answers to these questions are largely unknown due to the lack of modern analogs, potential answers lie buried in the fossil record of ecosystems that existed when the Earth was engulfed in a greenhouse world. Giraffe Pipe is the best known geologic analog of an Arctic lake that existed under a warm climate. The main objective of this project will be to utilize the microfossil remains to reconstruct the evolution of this Arctic lake ecosystem. Undergraduate students will be involved in the research, a high school teacher will be trained in methods, and an interactive presentation will be developed with the Connecticut Library Consortium for public use.The study will develop a novel suite of proxies that incorporate attributes of individual microfossil taxa and whole ecosystems; there will then be used to reconstruct the ontogeny of the Giraffe waterbody. Shifts in biological organizations, changes in chemical conditions, and modifications of the physical setting will be resolved and coupled with regional climate through concurrent pollen analyses. The findings will also document associations of organisms that were highly successful at colonizing warm water habitats and simultaneously able to survive long, dark, and mild Arctic winters. Further, the work will result in documentation of numerous new fossil species, contribute to the evolutionary histories of poorly studied organisms, and document the migration capabilities and survival strategies of microbes under changing environmental conditions. In summary, the Giraffe locality represents an unparalleled opportunity to examine an Arctic lake ecosystem and the numerous organisms that inhabited it, under a warm greenhouse world.

全球变暖正在以前所未有的速度发展，最终将导致全世界生态系统的大规模重组，对高纬度地区的影响更大，气候模式也将发生变化。这些北方生态系统的反应可能各不相同：有些生物可能消失，有些可能繁荣，还有一些生物迁移到这些北极地区。尽管由于缺乏现代类似物，这些问题的答案在很大程度上是未知的，但潜在的答案隐藏在地球被温室世界吞没时存在的生态系统的化石记录中。长颈鹿管是最著名的地质模拟北极湖，存在于温暖的气候下。该项目的主要目标是利用微体化石遗骸重建北极湖泊生态系统的演变。本科生将参与这项研究，一名高中教师将接受方法培训，并将与康涅狄格州图书馆联盟共同开发一个交互式演示文稿供公众使用。这项研究将开发一套新颖的代理，将单个微体化石分类群和整个生态系统的属性结合起来;然后将用于重建长颈鹿水体的个体发育。生物组织的变化，化学条件的变化和物理环境的改变将通过同时进行的花粉分析与区域气候相结合来解决。这些发现还将记录那些在温暖的水栖息地殖民方面非常成功的生物体的关联，同时能够在漫长，黑暗和温和的北极冬季生存。此外，这项工作还将记录许多新的化石物种，有助于研究不足的生物体的进化历史，并记录微生物在不断变化的环境条件下的迁移能力和生存策略。总之，长颈鹿的位置代表了一个无与伦比的机会，研究北极湖泊生态系统和众多的生物居住在它，在一个温暖的温室世界。