Abstract
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.
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- Campbell I. H., Czamanske G. K., Fedorenko V. A., Hill R. I., Stepanov V. Synchronism of the siberian traps and the permian-triassic boundary. Science. 1992 Dec 11;258(5089):1760–1763. doi: 10.1126/science.258.5089.1760. [DOI] [PubMed] [Google Scholar]
- Labandeira C. C., Sepkoski J. J., Jr Insect diversity in the fossil record. Science. 1993 Jul 16;261(5119):310–315. doi: 10.1126/science.11536548. [DOI] [PubMed] [Google Scholar]
- Rampino M. R., Stothers R. B. Flood basalt volcanism during the past 250 million years. Science. 1988 Aug 5;241(4866):663–668. doi: 10.1126/science.241.4866.663. [DOI] [PubMed] [Google Scholar]
- Renne P. R., Black M. T., Zichao Z., Richards M. A., Basu A. R. Synchrony and causal relations between permian-triassic boundary crises and siberian flood volcanism. Science. 1995 Sep 8;269(5229):1413–1416. doi: 10.1126/science.269.5229.1413. [DOI] [PubMed] [Google Scholar]
- Retallack G. J. Permian-triassic life crisis on land. Science. 1995 Jan 6;267(5194):77–80. doi: 10.1126/science.267.5194.77. [DOI] [PubMed] [Google Scholar]
- Stanley S. M., Yang X. A double mass extinction at the end of the paleozoic era. Science. 1994 Nov 25;266(5189):1340–1344. doi: 10.1126/science.266.5189.1340. [DOI] [PubMed] [Google Scholar]