权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Paleobiodiversity and community structures of Lagerstätten during the Late Paleozoic Ice Age and the response of the marine benthic invertebrate fauna to global cooling

晚古生代冰期沉积物的古生物多样性和群落结构以及海洋底栖无脊椎动物对全球变冷的响应

基本信息

批准号：
261172526
负责人：
Dr. Barbara Seuß
金额：
--
依托单位：
Staatssammlung für Paläontologie und Geologie
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2014
资助国家：
德国
起止时间：
2013-12-31 至 2018-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/261172526?language=en
关键词：
Paleobiodiversity community structures Lagerst tten

项目摘要

Paleo-biodiversity studies have become of increasing interest and numerous manuscripts have been published dealing with global diversity trends throughout the Phanerozoic. However, data used in these studies mostly derive from databases that may contain various biases and therefore distort statistical analysis. Moreover, Fossil Lagerstätten are commonly excluded although the quality of preservation and information is much better than in other deposits - fossil assemblages from Lagerstätten reflect the composition of former living communities to a much higher degree.The Phanerozoic is marked by two long-term cooling events. One of these is the Late Paleozoic Ice Age (LPIA) with its major onset in the middle to late Mississippian (Lower Carboniferous) and ending in the mid-Sakmarian (Permian). This project focuses on the paleo-biodiversity during the Upper Carboniferous (Pennsylvanian), i.e. during a large part of the LPIA. Instead of purely using information from databases three fossil Lagerstätten (here Lagerstätten is used in terms of exceptionally preserved fauna; e.g. original shell material, color patterns, delicate ornamentation, minute larval shells) are sampled. These localities were influenced by the glacio-eustatic regime during the LPIA and are, from the American Midcontinent, the Finis Shale (Virgilian) and the Buckhorn Asphalt Quarry (Desmoinesian) and, from the Appalachian Basin, the Kendrick Shale (Morrowan).One objective of this project is to study true biodiversities and ecological structures within deposits of exceptionally preserved fossils based on the fact that such deposits depict a more complete image of the original fossil assemblage than other localities. Stanley & Powell (2003) found that during the Pennsylvanian the rates of origination and extinction were depressed and that the global biodiversity remained relatively stable, whereas Alroy et al. (2008) found a general decrease in this period. Therefore, as the second objective, it will be tested if these previous results are visible in Lagerstätten from the Pennsylvanian as well: Do we also see depressed origination and extinction rates or decreasing biodiversity or are the results presented by Stanley & Powell (2003) and Alroy et al. (2008) caused by biases in their data, as for example by faunas of less quality of preservation? Furthermore, diversity dynamics will be studied by analyzing the Carboniferous-Permian faunal turnover. Which taxa control the diversities? The local marine paleo-temperatures within each profile will be investigated. Isotope-analyses will be carried out for the Finis Shale, the Buckhorn Asphalt Quarry, and the Kendrick Shale. Temperature and diversity will be cross correlated to shed light on the relation of temperature and biodiversity during the LPIA to answer the question 'How does the living environment react to global cooling?'.

古生物多样性的研究越来越引起人们的兴趣，许多关于显生宙全球生物多样性趋势的手稿已经出版。然而，这些研究中使用的数据大多来自可能包含各种偏差的数据库，因此扭曲了统计分析。此外，化石Lagerstätten通常被排除在外，尽管保存和信息的质量比其他沉积物好得多——Lagerstätten的化石组合在很大程度上反映了以前生活群落的组成。显生宙以两次长期冷却事件为标志。其中一个是晚古生代冰期（LPIA），主要开始于密西西比世中晚期（下石炭世），结束于萨克森纪中期（二叠纪）。本项目主要研究上石炭世（宾夕法尼亚）的古生物多样性，即LPIA的大部分时期。与单纯使用数据库中的信息不同，我们采集了三个化石Lagerstätten（此处Lagerstätten用于特别保存的动物群，例如原始壳材料、颜色图案、精致的纹饰、微小的幼虫壳）。这些地区在LPIA期间受到冰川-隆起机制的影响，来自美国中部大陆的是Finis页岩（弗吉尼亚）和Buckhorn沥青采石场（Desmoinesian），来自阿巴拉契亚盆地的是Kendrick页岩（Morrowan）。该项目的一个目标是研究特别保存的化石沉积物中真正的生物多样性和生态结构，因为这些沉积物比其他地方描绘了更完整的原始化石组合图像。Stanley和Powell（2003）发现，在宾夕法尼亚时期，物种的起源和灭绝率都有所下降，全球生物多样性保持相对稳定，而Alroy等人（2008）发现这一时期生物多样性普遍下降。因此，作为第二个目标，我们将测试这些先前的结果是否在Lagerstätten中也能从宾夕法尼亚看到：我们是否也看到了起源和灭绝率的下降或生物多样性的减少，或者Stanley & Powell（2003）和Alroy等人（2008）提出的结果是由他们的数据偏差引起的，例如由保存质量较差的动物群引起的？此外，通过分析石炭-二叠纪动物更替，研究多样性动态。哪个分类群控制了多样性？将调查每条剖面内的当地海洋古温度。将对Finis页岩、Buckhorn沥青采石场和Kendrick页岩进行同位素分析。温度和生物多样性将相互关联，以揭示在LPIA期间温度和生物多样性的关系，以回答“生活环境如何对全球变冷做出反应”的问题。

项目成果

期刊论文数量（7）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Bryozoan fauna of the Boggy Formation (Deese Group, Pennsylvanian) of the Buckhorn Asphalt Quarry, Oklahoma, USA

美国俄克拉荷马州巴克霍恩沥青采石场沼泽地层（宾夕法尼亚州迪斯群）的苔藓虫动物群

DOI：
10.1007/s12549-016-0231-6
发表时间：
2016
期刊：
Palaeobiodiversity and Palaeoenvironments
影响因子：
1.4
作者：
Ernst A;Seuss B;Taylor PD;Nützel A
通讯作者：
Nützel A

Fossil liberation: a model to explain high biodiversity in the Triassic Cassian Formation

DOI：
10.1111/pala.12441
发表时间：
2019-09
期刊：
Palaeontology
影响因子：
2.6
作者：
Vanessa Julie Roden;Imelda M. Hausmann;A. Nützel;Barbara Seuss;M. Reich;M. Urlichs;H. Hagdorn;W. Kiessling
通讯作者：
Vanessa Julie Roden;Imelda M. Hausmann;A. Nützel;Barbara Seuss;M. Reich;M. Urlichs;H. Hagdorn;W. Kiessling

Desmoinesian (Middle Pennsylvanian) Orthocerid Cephalopods from the Buckhorn Asphalt Lagerstätte in Oklahoma, Midcontinent North America

来自北美中大陆俄克拉荷马州鹿角沥青 Lagerstütte 的德梅因西亚（宾夕法尼亚州中部）直角动物头足类动物