Global diversity patterns and macroevolution of Palaeostomata (Bryozoa)

古口动物（苔藓虫）的全球多样性模式和宏观进化

• 批准号: 508852707
• 负责人: Privatdozent Dr. Andrej Ernst, Ph.D.
• 金额: --
• 依托单位: Institut für Geologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/508852707?language=en
• 关键词: Global; diversity; patterns; macroevolution; Palaeostomata

The proposed research intends to study global macroevolutionary patterns in the Palaeostomata, a group of bryozoans almost completely restricted to the Palaeozoic. These animals were exceptionally important in marine biotopes of the Palaeozoic time, being often reef-producing and sediment-forming. A series of questions are targeted to reveal macroevolutionary patterns of bryozoans within the span of 280 Ma of the Earth history, and to determine links between the bryozoan macroevolution and biotic and abiotic ecological factors. In the course of the project data on temporal distribution of species and genera of the Palaeostomata as well as their morphology will be compiled. The diversity patterns will be evaluated in order to outline radiation and extinction events (evolutionary success). On the base of own research activity during the past two decades and study of an extensive material on Palaeozoic bryozoans, evolutionary trends (key novelties) in morphology of Palaeostomata (e.g., growth form, feeding, reproductive and protective structures, etc.) will be identified. These data will be calibrated with ecological factors (sea level, temperature, primary production, predator stress, etc.). An important question is which of these tendencies/novelties are associated with evolutionary success. The data set on bryozoan morphology will be checked for possible convergences and parallelisms. The main hypothesis of the planned research suggests that taxonomic diversity of bryozoans and its dynamics were correlated with evolution of key novelties. The trigger for the key innovations was apparently ecology (climatic changes, food supply, predator press, etc.). Results on bryozoans will be compared with other groups considering the known global events as well as used for detection of possible patterns of the co-evolution of bryozoans with interacting organisms.

拟议的研究旨在研究古口动物的全球宏观进化模式，古口动物是一组几乎完全局限于古生代的苔藓动物。这些动物在古生代的海洋生境中极其重要，经常产生珊瑚礁和形成沉积物。一系列问题旨在揭示苔藓虫在地球历史280Ma的宏观进化模式，并确定苔藓虫宏观进化与生物和非生物生态因素之间的联系。在项目过程中，将汇编有关古口动物属的物种和属的时间分布及其形态的数据。将评估多样性模式，以概述辐射和灭绝事件（进化成功）。基于过去二十年的研究活动和对古生代苔藓虫的广泛材料的研究，古口虫形态（例如生长形式、摄食、繁殖和保护结构等）的进化趋势（关键新颖性）将被研究。确定。这些数据将根据生态因素（海平面、温度、初级生产力、捕食者压力等）进行校准。一个重要的问题是这些趋势/新颖性中的哪些与进化的成功相关。将检查苔藓动物形态数据集是否存在可能的收敛和并行性。计划研究的主要假设表明，苔藓虫的分类多样性及其动态与关键新奇事物的进化相关。关键创新的触发因素显然是生态学（气候变化、食物供应、捕食者压力等）。考虑到已知的全球事件，苔藓虫的结果将与其他群体进行比较，并用于检测苔藓虫与相互作用的生物体共同进化的可能模式。