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进行，最终将导致全球生态系统的大规模重组，并在高纬度上产生更大的影响，并随着气候模式的转变。这些北部生态系统的反应可能会有所不同：有些生物可能会消失，有些可能会繁殖，而另一些生物可能会迁移到这些北极地区。尽管由于缺乏现代类似物，因此对这些问题的答案在很大程度上是未知的，但潜在的答案埋葬在地球被吞没在温室世界中时存在的生态系统的化石记录中。长颈鹿管是在温暖气候下存在的北极湖的最著名的地质类似物。该项目的主要目的是利用微化石保留物来重建这个北极湖生态系统的演变。本科生将参与研究，将接受一名高中老师的方法培训，并将与康涅狄格州图书馆财团一起开发互动式演示。该研究将开发一套新颖的代理套件，其中包含各个微化石属性的属性和整个生态系统；然后，将使用长颈鹿水体的个体发育。生物组织的转变，化学条件的变化以及物理环境的修改将通过并发的花粉分析解决并与区域气候结合。这些发现还将记录在殖民温水栖息地方面非常成功的生物的关联，并同时能够长期生存，黑暗和轻度的北极冬季。此外，这项工作将导致记录许多新的化石物种，从而有助于研究良好的生物的进化历史，并记录在不断变化的环境条件下微生物的迁移能力和生存策略。总而言之，长颈鹿区域是一个无与伦比的机会，可以检查北极湖生态系统以及在温暖的温室世界下居住的众多生物。

项目成果

期刊论文数量（11）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Mallomonas aperturae sp. nov . (Synurophyceae) reveals that the complex cell architecture observed on modern synurophytes was well established by the middle Eocene

孔膜单胞菌 sp.

DOI：
10.2216/17-112.1
发表时间：
2018
期刊：
Phycologia
影响因子：
1.6
作者：
Siver, Peter A.
通讯作者：
Siver, Peter A.

Abundance and distribution of testate amoebae bearing siliceous plates in freshwater lakes and ponds along the east coast of North America: Importance of water depth and pH.

北美东海岸淡水湖泊和池塘中带有硅质板的有睾变形虫的丰度和分布：水深和 pH 值的重要性。

DOI：
10.1086/711691
发表时间：
2020
期刊：
Freshwater science
影响因子：
1.8
作者：
Siver, Peter A.
通讯作者：
Siver, Peter A.

Endemism, palaeoendemism and migration: the case for the ‘European endemic’, Mallomonas intermedia

地方病、古地方病和迁徙：“欧洲地方病”、中间马洛莫单胞菌的案例

DOI：
10.1080/09670262.2018.1544377
发表时间：
2019
期刊：
European Journal of Phycology
影响因子：
2.4
作者：
Siver, Peter A.;Skogstad, Asbjørn;Nemcova, Yvonne
通讯作者：
Nemcova, Yvonne

Aulacoseira giraffensis (Bacillariophyceae), a new diatom species forming massive populations in an Eocene lake

Aulacoseira giraffensis（硅藻纲），一种在始新世湖泊中形成大量种群的新硅藻物种

DOI：
发表时间：
2019
期刊：
Plant Ecology and Evolution
影响因子：
1.1
作者：
Siver, Peter A.;Wolfe, A.P.;Edlund, M.E.;Sibley, J.;Hausman, J.;Torres, P.;Lott, A.M
通讯作者：
Lott, A.M

EARLY FRESHWATER DIATOMS FROM THE UPPER CRETACEOUS BATTLE FORMATION IN WESTERN CANADA

加拿大西部上白垩纪战斗地层的早期淡水硅藻