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Controls on body size during the Late Permian mass extinction event.
Geobiology. 2010 Dec; 8(5):391-402.G

Abstract

This study examines the morphological responses of Late Permian brachiopods to environmental changes. Quantitative analysis of body size data from Permian-Triassic brachiopods has demonstrated significant, directional changes in body size before, during and after the Late Permian mass extinction event. Brachiopod size significantly reduced before and during the extinction interval, increased for a short time in more extinction-resistant taxa in the latter stages of extinction and then dramatically reduced again across the Permian/Triassic boundary. Relative abundances of trace elements and acritarchs demonstrate that the body size reductions which happened before, during and after extinction were driven by primary productivity collapse, whereas declining oxygen levels had less effect. An episode of size increase in two of the more extinction-resistant brachiopod species is unrelated to environmental change and possibly was the result of reduced interspecific competition for resources following the extinction of competitors. Based on the results of this study, predictions can be made for the possible responses of modern benthos to present-day environmental changes.

Authors+Show Affiliations

Key Laboratory of Biogeology and Environmental Geology of Ministry of Education, China University of Geosciences, Wuhan, China. whzhang@cug.edu.cnNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

20550584

Citation

He, W-H, et al. "Controls On Body Size During the Late Permian Mass Extinction Event." Geobiology, vol. 8, no. 5, 2010, pp. 391-402.
He WH, Twitchett RJ, Zhang Y, et al. Controls on body size during the Late Permian mass extinction event. Geobiology. 2010;8(5):391-402.
He, W. H., Twitchett, R. J., Zhang, Y., Shi, G. R., Feng, Q. L., Yu, J. X., Wu, S. B., & Peng, X. F. (2010). Controls on body size during the Late Permian mass extinction event. Geobiology, 8(5), 391-402. https://doi.org/10.1111/j.1472-4669.2010.00248.x
He WH, et al. Controls On Body Size During the Late Permian Mass Extinction Event. Geobiology. 2010;8(5):391-402. PubMed PMID: 20550584.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Controls on body size during the Late Permian mass extinction event. AU - He,W-H, AU - Twitchett,R J, AU - Zhang,Y, AU - Shi,G R, AU - Feng,Q-L, AU - Yu,J-X, AU - Wu,S-B, AU - Peng,X-F, PY - 2010/6/17/entrez PY - 2010/6/17/pubmed PY - 2011/3/2/medline SP - 391 EP - 402 JF - Geobiology JO - Geobiology VL - 8 IS - 5 N2 - This study examines the morphological responses of Late Permian brachiopods to environmental changes. Quantitative analysis of body size data from Permian-Triassic brachiopods has demonstrated significant, directional changes in body size before, during and after the Late Permian mass extinction event. Brachiopod size significantly reduced before and during the extinction interval, increased for a short time in more extinction-resistant taxa in the latter stages of extinction and then dramatically reduced again across the Permian/Triassic boundary. Relative abundances of trace elements and acritarchs demonstrate that the body size reductions which happened before, during and after extinction were driven by primary productivity collapse, whereas declining oxygen levels had less effect. An episode of size increase in two of the more extinction-resistant brachiopod species is unrelated to environmental change and possibly was the result of reduced interspecific competition for resources following the extinction of competitors. Based on the results of this study, predictions can be made for the possible responses of modern benthos to present-day environmental changes. SN - 1472-4669 UR - https://www.unboundmedicine.com/medline/citation/20550584/Controls_on_body_size_during_the_Late_Permian_mass_extinction_event_ L2 - https://doi.org/10.1111/j.1472-4669.2010.00248.x DB - PRIME DP - Unbound Medicine ER -