Response of Ostracods (Crustacea) to the Devonian F—F event: Evidence from the Yangdi and Nandong sections in Guangxi, South China
Response of Ostracods (Crustacea) to the Devonian F—F event: Evidence from the Yangdi and Nandong sections in Guangxi, South China
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介形类（甲壳类）对泥盆纪 F-F 事件的响应：来自广西杨堤和南东剖面的证据
DOI：
10.1016/j.gloplacha.2018.12.015
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发表时间：
2019
影响因子：
3.9
通讯作者：
Yiming Gong
中科院分区：
文献类型：
--
作者：
Junjun Song;Cheng Huang;Yiming Gong
根据中国南部杨堤和南东剖面采集的丰富资料，研究了晚泥盆世介形类及其对F-F事件的响应。超过一半(53%)的底栖介形类物种在斜坡相杨堤剖面的F-F界线上消失，而在盆地相南东剖面，大多数底栖介形类物种在F-F危机中幸存下来，部分中上层昆虫纲动物灭绝。鉴于锡矿山浅水域介形类物种的灭绝率较高(超过65%)，推测不同环境中的介形类对F-F事件的响应是不同的。也就是说，从碳酸盐台地、斜坡到盆地环境，底栖介形类在F-F过渡阶段的灭绝速率随着水深的增加而减小。然而，F-F事件造成了远洋昆虫科动物谱系的大量损失。中国南部F-F事件中底、远洋介形类的灭绝模式与欧洲相似。但欧洲浅水和坡地底栖介形类的灭绝率似乎高于中国南部。随着表层海水古温度的快速变化，在中国南部F-F界线的缺氧环境中，介形类的丰度和多样性降低，一些物种甚至消失。
This study focuses on the Late Devonian ostracods and their responses to the F—F (Frasnian-Famennian) event based on abundant materials collected from the Yangdi and Nandong sections in South China. More than half (53%) of the benthic ostracod species disappeared at the F—F boundary in the Yangdi section of slope facies, whereas most benthic ostracod species survived the F—F crisis in the Nandong section of basinal facies, with the extinction of some pelagic entomozooidea. In view of a higher extinction rate (more than 65%) of ostracod species in the shallow-water Xikuangshan section, we deduce that ostracods in varied environments responded to the F—F event differently. Namely, from the carbonate platform, slope, to basinal settings, the extinction rate of benthic ostracods at the F—F transition decreased with increasing water depth. Nevertheless, the F—F event caused substantial loss among pelagic entomozooidea lineages. The extinction pattern of benthic and pelagic ostracods in F—F event in South China is similar to the situation in Europe. But the extinction rates of benthic ostracods in shallow water and slope in Europe seems to be higher than that in the same situation in South China. The abundance and diversity of ostracods decreased and some species even disappeared in anoxic environments across the F—F boundary in South China, when there were rapid changes in the palaeotemperature of surface sea water.