Benthic (bryozoan) response to Silurian climatic changes

底栖动物（苔藓虫）对志留纪气候变化的反应

• 批准号: 324107966
• 负责人: Professor Dr. Axel Munnecke
• 金额: --
• 依托单位: Forschungsschwerpunkt Paläontologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/324107966?language=en
• 关键词: Benthic; bryozoan; response; Silurian; climatic

The Silurian is a time of pronounced perturbations of the global carbon cycle, expressed as strong positive delta 13C excursions with amplitudes of more than 4 permill (up to >10 permill). These changes in carbon isotope values coincide with changes in other parameters such as oxygen isotopes, sea-level, depositional environments, but also with faunal turnovers and extinction events. The steering mechanisms of these events are poorly understood. Nevertheless, these biotic events are well documented for planktic and nektobenthic organisms such as graptolites, conodonts, or hemipelagic trilobites, but very little is known if and how shallow-water sessile benthic organisms react to these perturbations. In this project Silurian bryozoans from Baltica and Laurentia will be investigated with respect to taxonomy, diversity, and biometry. Besides, it will be investigated whether their shape, size, or wall thickness show spatial and/or temporal changes which would allow for palaeoenvironmental interpretations such as changes in nutrification or carbonate saturation of the sea water.

志留纪是全球碳循环受到显著扰动的时期，表现为δ 13C的强烈正偏移，幅度超过4千分之一（最高可达10千分之一）。这些碳同位素值的变化与氧同位素、海平面、沉积环境等其他参数的变化一致，但也与动物更替和灭绝事件有关。人们对这些事件的指导机制知之甚少。尽管如此，这些生物事件对于浮游生物和底栖生物，如笔石、牙形刺或半深海三叶虫，都有很好的记录，但对于浅水无底栖生物是否以及如何对这些扰动作出反应，我们知之甚少。本项目将对来自波罗的海和劳伦西亚的志留纪苔藓虫进行分类、多样性和生物计量学研究。此外，还将研究它们的形状、大小或壁厚是否显示空间和/或时间变化，这将允许对古环境进行解释，如营养变化或海水的碳酸盐饱和度。

项目成果

Modern brackish bryostromatolites (“bryoliths”) from Zeeland (Netherlands)

来自泽兰（荷兰）的现代咸水苔层石（âbryolithsâ）

• DOI: 10.1007/s12549-021-00490-3
• 发表时间: 2022
• 期刊: Palaeobiodiversity and Palaeoenvironments
• 影响因子: 1.4
• 作者: Harrison;Claussen;Schulbert;Munnecke
• 通讯作者: Munnecke

The oldest deep-boring bivalves? Evidence from the Silurian of Gotland (Sweden)

最古老的深钻双壳类动物？

• DOI: 10.1007/s10347-019-0570-7
• 发表时间: 2019
• 期刊: Facies
• 影响因子: 1.8
• 作者: Claussen;Munnecke;Wilson;Oswald
• 通讯作者: Oswald

The Silurian Transgression of a Palaeoshoreline: The Area between Old Radnor and Presteigne, Welsh Borderlands

古海岸线的志留纪海侵：威尔士边境老拉德诺和普雷斯坦恩之间的区域

• DOI: 10.2113/2021/7866176
• 发表时间: 2021
• 期刊: Lithosphere
• 影响因子: 2.4
• 作者: Jarochowska;Hughes;Claussen;Tingley;Moseley;Bremer
• 通讯作者: Bremer

Stenolaemate bryozoans from the Graham Formation, Pennsylvanian (Virgilian) at Lost Creek Lake, Texas, USA

来自美国德克萨斯州失落溪湖宾夕法尼亚州（弗吉尼亚州）格雷厄姆组的苔藓虫

• DOI: 10.26879/1174
• 发表时间: 2022
• 期刊: Palaeontologia Electronica
• 影响因子: 2
• 作者: Claussen;Wyse Jackson
• 通讯作者: Wyse Jackson