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Ecosystem remodelling among vertebrates at the Permian-Triassic boundary in Russia.
Nature. 2004 Nov 04; 432(7013):97-100.Nat

Abstract

The mass extinction at the Permian-Triassic boundary, 251 million years (Myr) ago, is accepted as the most profound loss of life on record. Global data compilations indicate a loss of 50% of families or more, both in the sea and on land, and these figures scale to a loss of 80-96% of species, based on rarefaction analyses. This level of loss is confirmed by local and regional-scale studies of marine sections, but the terrestrial record has been harder to analyse in such close detail. Here we document the nature of the event in Russia in a comprehensive survey of 675 specimens of amphibians and reptiles from 289 localities spanning 13 successive geological time zones in the South Urals basin. These changes in diversity and turnover cannot be explained simply by sampling effects. There was a profound loss of genera and families, and simplification of ecosystems, with the loss of small fish-eaters and insect-eaters, medium and large herbivores and large carnivores. Faunal dynamics also changed, from high rates of turnover through the Late Permian period to greater stability at low diversity through the Early Triassic period. Even after 15 Myr of ecosystem rebuilding, some guilds were apparently still absent-small fish-eaters, small insect-eaters, large herbivores and top carnivores.

Authors+Show Affiliations

Department of Earth Sciences, University of Bristol, Bristol BS8 1RJ, UK. mike.benton@bris.ac.ukNo affiliation info availableNo affiliation info available

Pub Type(s)

Historical Article
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15525988

Citation

Benton, M J., et al. "Ecosystem Remodelling Among Vertebrates at the Permian-Triassic Boundary in Russia." Nature, vol. 432, no. 7013, 2004, pp. 97-100.
Benton MJ, Tverdokhlebov VP, Surkov MV. Ecosystem remodelling among vertebrates at the Permian-Triassic boundary in Russia. Nature. 2004;432(7013):97-100.
Benton, M. J., Tverdokhlebov, V. P., & Surkov, M. V. (2004). Ecosystem remodelling among vertebrates at the Permian-Triassic boundary in Russia. Nature, 432(7013), 97-100.
Benton MJ, Tverdokhlebov VP, Surkov MV. Ecosystem Remodelling Among Vertebrates at the Permian-Triassic Boundary in Russia. Nature. 2004 Nov 4;432(7013):97-100. PubMed PMID: 15525988.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ecosystem remodelling among vertebrates at the Permian-Triassic boundary in Russia. AU - Benton,M J, AU - Tverdokhlebov,V P, AU - Surkov,M V, PY - 2004/07/02/received PY - 2004/08/18/accepted PY - 2004/11/5/pubmed PY - 2004/12/18/medline PY - 2004/11/5/entrez SP - 97 EP - 100 JF - Nature JO - Nature VL - 432 IS - 7013 N2 - The mass extinction at the Permian-Triassic boundary, 251 million years (Myr) ago, is accepted as the most profound loss of life on record. Global data compilations indicate a loss of 50% of families or more, both in the sea and on land, and these figures scale to a loss of 80-96% of species, based on rarefaction analyses. This level of loss is confirmed by local and regional-scale studies of marine sections, but the terrestrial record has been harder to analyse in such close detail. Here we document the nature of the event in Russia in a comprehensive survey of 675 specimens of amphibians and reptiles from 289 localities spanning 13 successive geological time zones in the South Urals basin. These changes in diversity and turnover cannot be explained simply by sampling effects. There was a profound loss of genera and families, and simplification of ecosystems, with the loss of small fish-eaters and insect-eaters, medium and large herbivores and large carnivores. Faunal dynamics also changed, from high rates of turnover through the Late Permian period to greater stability at low diversity through the Early Triassic period. Even after 15 Myr of ecosystem rebuilding, some guilds were apparently still absent-small fish-eaters, small insect-eaters, large herbivores and top carnivores. SN - 1476-4687 UR - https://www.unboundmedicine.com/medline/citation/15525988/Ecosystem_remodelling_among_vertebrates_at_the_Permian_Triassic_boundary_in_Russia_ L2 - https://doi.org/10.1038/nature02950 DB - PRIME DP - Unbound Medicine ER -