Warm afterglow from the Toarcian Oceanic Anoxic Event drives the success of deep-adapted brachiopods
Warm afterglow from the Toarcian Oceanic Anoxic Event drives the success of deep-adapted brachiopods
复制标题
托阿尔西亚海洋缺氧事件的温暖余辉推动了深度适应腕足动物的成功
DOI：
10.1038/s41598-020-63487-6
复制
发表时间：
2020
影响因子：
4.6
通讯作者：
Aberhan
中科院分区：
文献类型：
--
作者：
Ullmann;Duarte;Hesselbo;Kasemann;Lenton;Piazza;Aberhan
关于早侏罗世Toarcian Oceanic缺氧事件（T-OAE，早侏罗世，约182 Ma）的许多方面已经得到了很好的理解，但缺乏可靠的古温度数据严重限制了对T-OAE及其相关环境和生物变化过程的重建。来自底栖动物方解石壳的新氧同位素数据表明，在整个T-OAE期间，特提斯西部的底部水温升高了3.5°c。模拟支持了广泛的海洋缺氧是由温室驱动的风化脉冲引起的观点，并且与全球硅酸盐风化通量的限制导致OAE持续时间延长的观点相一致。在特提斯洋西部，T-OAE后期以soaresirhynchia腕足类丰富为特征，表现出生长缓慢的深海腕足类特征。soaresirhynchia在高温事件中不太可能的成功归因于低代谢率，这使它比其他来自具有较高代谢需求的浅陆表环境的物种具有优势。
Many aspects of the supposed hyperthermal Toarcian Oceanic Anoxic Event (T-OAE, Early Jurassic, c. 182 Ma) are well understood but a lack of robust palaeotemperature data severely limits reconstruction of the processes that drove the T-OAE and associated environmental and biotic changes. New oxygen isotope data from calcite shells of the benthic fauna suggest that bottom water temperatures in the western Tethys were elevated by c. 3.5 °C through the entire T-OAE. Modelling supports the idea that widespread marine anoxia was induced by a greenhouse-driven weathering pulse, and is compatible with the OAE duration being extended by limitation of the global silicate weathering flux. In the western Tethys Ocean, the later part of the T-OAE is characterized by abundant occurrences of the brachiopodSoaresirhynchia, which exhibits characteristics of slow-growing, deep sea brachiopods. The unlikely success ofSoaresirhynchiain a hyperthermal event is attributed here to low metabolic rate, which put it at an advantage over other species from shallow epicontinental environments with higher metabolic demand.
登录
查看更多内容
影响因子：
5.3
作者：
Hermoso, Michael;Minoletti, Fabrice;Jenkyns, Hugh C.
通讯作者：
Jenkyns, Hugh C.
影响因子：
5.3
作者：
Hesselbo, Stephen P.;Pienkowski, Grzegorz
通讯作者：
Pienkowski, Grzegorz
达吉斯坦早白垩世喙嘴科动物：系统、形态、地层和古生物地理学意义
影响因子：
0.6
作者：
T. Smirnova
通讯作者：
T. Smirnova
影响因子：
4.6
作者：
Them TR;Gill BC;Selby D;Gröcke DR;Friedman RM;Owens JD
通讯作者：
Owens JD
Cambios del nivel del mar y extinción en masa: la respuesta de la entónica en el Toarciense Inferior (Jurásico Inferior) de la Península Ibérica
DOI：
--
发表时间：
2005
期刊：
影响因子：
--
作者：
M. E. Gahr
通讯作者：
M. E. Gahr