DISSERTATION RESEARCH: Geographic complexity in the recovery of terrestrial vertebrate assemblages from mass extinction
论文研究:陆地脊椎动物群从大规模灭绝中恢复的地理复杂性
基本信息
- 批准号:1501097
- 负责人:
- 金额:$ 1.59万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2015
- 资助国家:美国
- 起止时间:2015-05-01 至 2017-04-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This project will improve our understanding of how terrestrial life diversified after the largest extinction event of the last 500 million years. This event took place just over 252 million years ago at the boundary between the Permian and Triassic periods, when more than 70% of terrestrial animals went extinct. The fossil record is one of the main sources of data for many questions concerning the history of life on Earth. For the end-Permian event, our understanding of what occurred on land is known almost entirely from just two places - Russia and South Africa. This new research will build a database of fossil material belonging to terrestrial vertebrate animals from two additional places - Tanzania and Zambia. Before the extinction the fossil communities at those two new locations were similar to those of South Africa, but afterwards they were very different, and included new animals such as close relatives of mammals and, surprisingly, early relatives of the first dinosaurs. This research will combine data collected from recent research with that stored in museums across Europe and Africa to develop the most extensive fossil database of end-Permian land animals. This will allow paleontologists to determine diversification patterns across a larger region than has ever been done for this time period, and to discover the reasons that particular species survived the largest mass extinction event of all time and subsequently thrived. This project will synthesize several facets of diversity among terrestrial tetrapods, including species richness, evenness, relative abundances, trophic structure, and ecological niche diversity, and adds a new component of geographical complexity from poorly-sampled basins in Tanzania and Zambia (TZAM). Substantial fieldwork there in recent years has confirmed that the sedimentary rocks can be correlated with those of South Africa and Russia, and can therefore act as independent tests of hypotheses about the extinction and recovery processes. Preliminary data indicate that a homogeneous fauna existed between TZAM and South Africa before the extinction event, but that during the recovery process ecosystems fragmented, resulting in increased levels of endemism and biogeographic differentiation. This project aims to test hypotheses related to ecological structure and biogeographic patterns of vertebrate communities on either side of the end-Permian extinction, both within and between basins. Additionally, the researchers will test in deep time an ecological hypothesis developed for extant species, the abundance-range hypothesis.
该项目将提高我们对过去5亿年来最大的灭绝事件后地球生命如何多样化的理解。这一事件发生在2.52亿年前的二叠纪和三叠纪之间,当时超过70%的陆地动物灭绝。化石记录是有关地球生命历史的许多问题的主要数据来源之一。对于二叠纪末的事件,我们对陆地上发生的事情的了解几乎完全来自两个地方-俄罗斯和南非。这项新的研究将建立一个属于陆地脊椎动物化石材料的数据库,这些化石材料来自另外两个地方-坦桑尼亚和赞比亚。在大灭绝之前,这两个新地点的化石群落与南非的化石群落相似,但之后它们就大不相同了,包括了新的动物,如哺乳动物的近亲,令人惊讶的是,还有第一批恐龙的早期亲属。这项研究将联合收割机从最近的研究中收集的数据与存储在欧洲和非洲的博物馆中的数据相结合,以开发最广泛的二叠纪末陆地动物化石数据库。这将使古生物学家能够确定比这一时期更大区域的多样化模式,并发现特定物种在有史以来最大的大规模灭绝事件中幸存下来并随后蓬勃发展的原因。该项目将综合陆地四足动物多样性的几个方面,包括物种丰富度,均匀度,相对丰度,营养结构和生态位多样性,并增加了一个新的组成部分,从坦桑尼亚和赞比亚(TZAM)采样不足的盆地地理复杂性。近年来,大量的实地考察证实,这些沉积岩可以与南非和俄罗斯的沉积岩相关联,因此可以作为对灭绝和恢复过程假设的独立测试。初步数据表明,在灭绝事件之前,TZAM和南非之间存在着同质的动物群,但在恢复过程中,生态系统破碎化,导致特有性和地理分化程度增加。该项目旨在测试与二叠纪末灭绝两侧脊椎动物群落的生态结构和地理分布模式有关的假设,包括盆地内和盆地之间。此外,研究人员将在很长一段时间内测试一个为现存物种开发的生态假设,即丰度范围假设。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Christian Sidor其他文献
Christian Sidor的其他文献
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{{ truncateString('Christian Sidor', 18)}}的其他基金
Dark Data from the White Continent: New Light on Five Decades of Vertebrate Paleontology Collections from the Triassic Fremouw Formation of Antarctica
来自白色大陆的暗数据:对南极洲三叠纪 Fremouw 组的五个十年的脊椎动物古生物学收藏的新认识
- 批准号:
2313242 - 财政年份:2024
- 资助金额:
$ 1.59万 - 项目类别:
Standard Grant
A Non-amniote Perspective on the Recovery from the End-Permian Extinction at High Latitudes: Paleobiology of Early Triassic Temnospondyls from Antarctica
高纬度地区二叠纪末灭绝恢复的非羊膜动物视角:南极洲早三叠世节椎生物的古生物学
- 批准号:
1947094 - 财政年份:2020
- 资助金额:
$ 1.59万 - 项目类别:
Standard Grant
CSBR: Natural History: Enhancing paleontology collections in coordination with a new Burke Museum facility
CSBR:自然历史:与新的伯克博物馆设施协调加强古生物学收藏
- 批准号:
1756218 - 财政年份:2019
- 资助金额:
$ 1.59万 - 项目类别:
Standard Grant
Collaborative Research: Terrestrial Late Permian to Early Triassic Earth Systems in NE Pangea: Insights into the Tempo, Effects, and Causes of the End-Permian Mass Extinction
合作研究:盘古大陆东北部的陆地晚二叠世至早三叠世地球系统:深入了解二叠纪末大规模灭绝的节奏、影响和原因
- 批准号:
1713787 - 财政年份:2017
- 资助金额:
$ 1.59万 - 项目类别:
Standard Grant
DISSERTATION RESEARCH: The Evolution of Mammalian Dentition: Insights from fossil synapsid histology
论文研究:哺乳动物牙列的进化:来自化石突孔动物组织学的见解
- 批准号:
1701383 - 财政年份:2017
- 资助金额:
$ 1.59万 - 项目类别:
Standard Grant
Collaborative Research: Understanding the Evolution of High-latitude Permo-Triassic Paleoenvironments and their Vertebrate Communities.
合作研究:了解高纬度二叠纪-三叠纪古环境及其脊椎动物群落的演化。
- 批准号:
1341304 - 财政年份:2016
- 资助金额:
$ 1.59万 - 项目类别:
Standard Grant
ELT Collaborative Research: Restructuring of terrestrial environments following the Permian-Triassic mass extinction
ELT 合作研究:二叠纪-三叠纪大规模灭绝后陆地环境的重建
- 批准号:
1337569 - 财政年份:2013
- 资助金额:
$ 1.59万 - 项目类别:
Continuing Grant
DISSERTATION RESEARCH: An integrative assessment of body size and growth patterns in therocephalian synapsids before and after the end-Permian extinction
论文研究:二叠纪末灭绝前后兽头纲突弓动物体型和生长模式的综合评估
- 批准号:
1209018 - 财政年份:2012
- 资助金额:
$ 1.59万 - 项目类别:
Standard Grant
Preparation of Vertebrate Fossils from the Triassic of Antarctica
南极三叠纪脊椎动物化石的制备
- 批准号:
1146399 - 财政年份:2011
- 资助金额:
$ 1.59万 - 项目类别:
Standard Grant
New fossils from Tanzania reveal the rapid diversification of Archosauria
坦桑尼亚的新化石揭示了主龙类的快速多样化
- 批准号:
1024036 - 财政年份:2010
- 资助金额:
$ 1.59万 - 项目类别:
Continuing Grant
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