Global cooling initiated the Middle-Late Mississippian biodiversity crisis
Global cooling initiated the Middle-Late Mississippian biodiversity crisis
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全球变冷引发密西西比中晚期生物多样性危机
DOI：
10.1016/j.gloplacha.2022.103852
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发表时间：
2022-05
影响因子：
3.9
通讯作者：
Xiangdong Wang
中科院分区：
文献类型：
--
作者：
Le Yao;Ganqing Jiang;Horng-sheng Mii;Yifang Lin;Markus Aretz;Jitao Chen;Yuping Qi;Wei Lin;Qiulai Wang;Xiangdong Wang
在密西西比期，后生生物礁和其他海洋动物群逐渐从泥盆纪晚期的大灭绝中恢复过来，并在维西期晚期(~334-332 Ma)达到顶峰。动物群多样性从Visean末期(~332-330 Ma)到Serpukhoian(~330-323 Ma)开始下降，属/种损失显著，生态系统重建。密西西比河中晚期生物多样性危机(M-LMBC)被认为是由与晚古生代冰期(LPIA)相关的全球降温引起的，但现有的沉积学和温度替代数据表明，标志着LPIA主冰期开始的全球降温事件发生在生物多样性最初下降(约332 Ma)之前约4Myr或之后约1-5Myr。本文报道了南中国维辛晚期(或密西西比纪中晚期；~334~323 Ma)成岩筛选、保存完好的腕足类方解石(δ18 O方解石)的氧同位素数据，其中生物多样性数据得到了很好的记录。δ18O方解石测年结果显示，在大约332.5~331.5 Ma期间，‰正向漂移，从−4.6±0.2‰到−2.7±0.5‰，海面温度下降约4.7~5.5℃。这一冷却事件与后生动物生物礁丰度的快速下降以及底栖生物多样性的下降相吻合。δ18O方解石数据，结合定标的沉积学和生物多样性数据，证实了LPIA主冰期的VISEAN晚期(~332 Ma)开始与M-LMBC开始之间的耦合。·腕足类氧同位素记录了332.5-331.5 Ma期间海表面温度下降约4.7C-5.5C的降温事件。·这一冷却事件恰逢后生动物珊瑚礁丰度和底栖动物多样性迅速下降。·Visean晚期(~332 Ma)晚古生代冰期主要冰期的开始，引发了生物多样性危机。
During the Mississippian period, metazoan reefs and other marine faunas gradually recovered from the Late Devonian mass extinctions and reached a peak in the late Visean (~334–332 Ma). Faunal diversity started to decline from the latest Visean (~332–330 Ma) through Serpukhovian (~330–323 Ma), with significant genera/species losses and ecosystem reconstruction. This Middle-Late Mississippian biodiversity crisis (M-LMBC) was thought to have been caused by global cooling associated with the late Paleozoic Ice Age (LPIA), but existing sedimentological and temperature proxy data suggest that the global cooling event—that marks the onset of the main glaciation phase of LPIA—happened either ~4 Myr before or ~ 1–5 Myr after the initial biodiversity decline at ~332 Ma. Here, we report oxygen isotope data of diagenetically screened, well-preserved brachiopod calcite (δ 18 O calcite ) from late Visean-Serpukhovian (or Middle-Late Mississippian; ~334–323 Ma) strata in South China where biodiversity data are well documented. The δ 18 O calcite data reveal a ~ 2.0‰ positive shift from −4.6 ± 0.2‰ to −2.7 ± 0.5‰ with an estimated ~4.7–5.5 °C drop in sea surface temperature (SST) during ~332.5–331.5 Ma in the late Visean. This cooling event coincides with fast decline of metazoan reef abundance, followed by decrease of benthic faunal diversity. The δ 18 O calcite data, in combination with calibrated sedimentological and biodiversity data, demonstrate the coupling between late Visean (~332 Ma) onset of the main glaciation phase of the LPIA and initiation of the M-LMBC. • Brachiopod oxygen isotopes document a cooling event with ~4.7–5.5 °C drop in sea surface temperature during 332.5–331.5 Ma. • This cooling event coincides with fast decline of metazoan reef abundance and benthic faunal diversity. • Late Visean (~332 Ma) onset of the main glaciation phase of the late Paleozoic Ice Age initiated biodiversity crisis.
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影响因子：
1.8
作者：
I. Somerville
通讯作者：
I. Somerville
DOI：
10.1144/gsl.sp.1964.001.01.21
发表时间：
1964
期刊：
Geological Society, London, Special Publications
影响因子：
--
作者：
E. H. Francis;A. W. Woodland
通讯作者：
E. H. Francis;A. W. Woodland
影响因子：
5.8
作者：
S. Stanley;M. Powell
通讯作者：
S. Stanley;M. Powell
DOI：
--
发表时间：
1984
期刊：
--
影响因子：
--
作者：
C. Sandberg;R. Gutschick
通讯作者：
C. Sandberg;R. Gutschick
影响因子：
5.8
作者：
R. Larson
通讯作者：
R. Larson