The terminal Paleozoic fungal event: evidence of terrestrial ecosystem destabilization and collapse.
The terminal Paleozoic fungal event: evidence of terrestrial ecosystem destabilization and collapse.
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DOI：
10.1073/pnas.93.5.2155
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发表时间：
1996-03
影响因子：
11.1
通讯作者：
H. Visscher;H. Brinkhuis;D. Dilcher;W. C. Elsik;Y. Eshet;C. Looy;M. Rampino;Alfred Traverse
中科院分区：
文献类型：
--
作者：
H. Visscher;H. Brinkhuis;D. Dilcher;W. C. Elsik;Y. Eshet;C. Looy;M. Rampino;Alfred Traverse
由于其在全球生物量储存中的突出作用，陆地植被是地球历史上记录戏剧性生态危机的最明显的生物群。越来越多的证据表明，在世界各地，保存在最新的二叠纪沉积中的沉积有机质具有无与伦比的丰富的真菌遗迹的特征，无论沉积环境(海相、湖泊、河流)、植物区划和气候分带如何。这一真菌事件可被认为反映了乔木植被的过度死亡，影响了陆地生态系统的不稳定和随后的崩溃，并伴随着现生生物量的损失。这种情况与预测是一致的，即二叠纪-三叠纪生态危机是由西伯利亚圈闭洪水玄武岩快速喷发引起的大气化学严重变化的影响引发的。
Because of its prominent role in global biomass storage, land vegetation is the most obvious biota to be investigated for records of dramatic ecologic crisis in Earth history. There is accumulating evidence that, throughout the world, sedimentary organic matter preserved in latest Permian deposits is characterized by unparalleled abundances of fungal remains, irrespective of depositional environment (marine, lacustrine, fluviatile), floral provinciality, and climatic zonation. This fungal event can be considered to reflect excessive dieback of arboreous vegetation, effecting destabilization and subsequent collapse of terrestrial ecosystems with concomitant loss of standing biomass. Such a scenario is in harmony with predictions that the Permian-Triassic ecologic crisis was triggered by the effects of severe changes in atmospheric chemistry arising from the rapid eruption of the Siberian Traps flood basalts.