Moving from correlation to mechanism: testing the role of temperature and oxygen change in the Great Ordovician Biodiversification Event
从相关性转向机制:测试温度和氧气变化在奥陶纪大生物多样性事件中的作用
基本信息
- 批准号:1922966
- 负责人:
- 金额:$ 29.79万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2019
- 资助国家:美国
- 起止时间:2019-08-01 至 2023-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Oxygen levels and temperature change are generally recognized as two of the most important environmental factors affecting marine ecosystems, both in the geologic past and in the modern ocean. This project examines the Great Ordovician Biodiversification Event (GOBE), a major increase in the diversity of marine life that occurred approximately 460 million years ago, when there were dramatic changes in oxygen levels and temperature. This project will use a unique combination of geological fieldwork, laboratory measurements of trace metal isotopes, Earth system modeling, and physiological insights from living organisms to understand the role that both oxygen and temperature play in driving major events in the history of life, such as evolutionary radiations and mass extinctions. The results also will help stakeholders better predict how modern global change will affect living marine populations, with implications for the future development of economic and food resources (e.g., fishing and aquaculture). This project will use an ecophysiological approach to test the causal role of oxygen and temperature change in driving biodiversity dynamics during the Great Ordovician Biodiversification Event. This integrated project will 1) build a record of Ordovician oceanic redox change using new Mo and U trace metal isotope measurements, and compile temperature estimates from the literature, 2) conduct the necessary physiological measurements on brachiopods, bryozoans, mollusks, and echinoderms that are required to fully leverage the Metabolic Index in addressing paleontological questions, 3) use Earth system models to build a time series of model states consistent with available geochemical data, and 4) use the Metabolic Index to evaluate the proportion of biotic change observed in the fossil record during the GOBE that can be explained by oxygen, temperature, and their synergistic combination. The use of physiological measurements to understand how ecosystem reorganizations can be mediated at the organismal scale creates mechanistic links that complement the descriptive and correlative methods for testing hypotheses of climate-ecosystem linkages. Broader Impacts of this proposal include early career training, ecological conservation, and a STEM outreach project with local high school robotics teams.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
氧气水平和温度变化通常被认为是影响海洋生态系统的两个最重要的环境因素,无论是地质的过去还是现代海洋。该项目研究了大奥托维奇生物多样性事件(GOBE),大约在4.6亿年前发生的海洋生物多样性的重大增加,氧气水平和温度发生了巨大变化。该项目将使用地质野外作业,痕量金属同位素的实验室测量,地球系统建模以及生物学生物学的洞察力的独特组合,以了解氧气和温度在推动生命史上驱动重大事件的作用,例如进化辐射和灭绝。结果还将有助于利益相关者更好地预测现代全球变化将如何影响活着的海洋人群,这对经济和粮食资源的未来发展(例如捕鱼和水产养殖)产生了影响。 该项目将使用一种生态生理方法来测试氧气和温度变化在大奥陶纪生物多样性事件期间驱动生物多样性动力学中的因果作用。这个集成的项目将1)使用新的MO和U进行新的MO和U建立多余的海洋氧化还原的记录,并根据文献进行编译,并根据文献进行编译,2)对腕足动物,毛br骨,软体动物,软体动物,软体动物和棘皮动物的构建一定范围构建模型的模型,该模型在brachiopods,bryozoans,bryozoans和echinoderms上进行模型,以构建模型,以构建模型,该模型是构建模型,该模型均可构建模型,该模型均可构建模型,该模型均可构建模型,该模型均可构建模型,该模型均已建立了一个范围。与可用的地球化学数据一致,以及4)使用代谢指数评估在GOBE期间在化石记录中观察到的生物变化比例,可以通过氧气,温度及其协同组合来解释。使用生理测量来了解生态系统重组如何在有机体量表上介导的生态系统重组会产生机械链接,从而补充了用于测试气候生态系统链接假设的描述性和相关方法。该建议的更广泛的影响包括早期职业培训,生态保护和与当地高中机器人团队的STEM外展项目。该奖项反映了NSF的法定任务,并被认为是值得通过基金会的知识分子和更广泛影响的评估评估标准来通过评估来支持的。
项目成果
期刊论文数量(10)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
The Road River Group of northern Yukon, Canada: early Paleozoic deep-water sedimentation within the Great American Carbonate Bank
- DOI:10.1139/cjes-2020-0017
- 发表时间:2020-04
- 期刊:
- 影响因子:1.4
- 作者:J. Strauss;T. Fraser;M. Melchin;T. J. Allen;Joseph Malinowski;Xiahong Feng;John F. Taylor;J. Day;Benjamin C Gill;E. Sperling
- 通讯作者:J. Strauss;T. Fraser;M. Melchin;T. J. Allen;Joseph Malinowski;Xiahong Feng;John F. Taylor;J. Day;Benjamin C Gill;E. Sperling
Variable redox conditions as an evolutionary driver? A multi-basin comparison of redox in the middle and later Cambrian oceans (Drumian-Paibian)
- DOI:10.1016/j.palaeo.2020.110209
- 发表时间:2021-02-02
- 期刊:
- 影响因子:3
- 作者:LeRoy, Matthew A.;Gill, Benjamin C.;Park, Tae-Yoon S.
- 通讯作者:Park, Tae-Yoon S.
Isotopic analyses of Ordovician–Silurian siliceous skeletons indicate silica‐depleted Paleozoic oceans
- DOI:10.1111/gbi.12449
- 发表时间:2021-05
- 期刊:
- 影响因子:3.7
- 作者:E. Trower;J. Strauss;E. Sperling;W. Fischer
- 通讯作者:E. Trower;J. Strauss;E. Sperling;W. Fischer
Metabolic tradeoffs control biodiversity gradients through geological time
- DOI:10.1016/j.cub.2021.04.021
- 发表时间:2021-07-12
- 期刊:
- 影响因子:9.2
- 作者:Boag, Thomas H.;Gearty, William;Stockey, Richard G.
- 通讯作者:Stockey, Richard G.
Persistent global marine euxinia in the early Silurian
- DOI:10.1038/s41467-020-15400-y
- 发表时间:2020-04
- 期刊:
- 影响因子:16.6
- 作者:R. Stockey;D. Cole;N. Planavsky;D. Loydell;J. Frýda;E. Sperling
- 通讯作者:R. Stockey;D. Cole;N. Planavsky;D. Loydell;J. Frýda;E. Sperling
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Erik Sperling的其他基金
Collaborative Research: Elements: Linking geochemical proxy records to crustal stratigraphic context via community-interactive cyberinfrastructure
合作研究:要素:通过社区交互式网络基础设施将地球化学代理记录与地壳地层背景联系起来
- 批准号:23110922311092
- 财政年份:2023
- 资助金额:$ 29.79万$ 29.79万
- 项目类别:Standard GrantStandard Grant
CAREER: Tracking deep-time environmental change through statistical analyses of the sedimentary geochemical record
职业:通过沉积地球化学记录的统计分析跟踪深层环境变化
- 批准号:21431642143164
- 财政年份:2022
- 资助金额:$ 29.79万$ 29.79万
- 项目类别:Continuing GrantContinuing Grant
Collaborative Research: EAGER: The early evolution of lamp shells and relatives (brachiopods) using an integrated approach combining genomics and fossils
合作研究:EAGER:使用基因组学和化石相结合的综合方法研究灯壳及其亲戚(腕足动物)的早期进化
- 批准号:17477311747731
- 财政年份:2017
- 资助金额:$ 29.79万$ 29.79万
- 项目类别:Standard GrantStandard Grant
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