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The latitudinal diversity gradient of tetrapods across the Permo-Triassic mass extinction and recovery interval.
Proc Biol Sci. 2020 06 24; 287(1929):20201125.PB

Abstract

The decline in species richness from the equator to the poles is referred to as the latitudinal diversity gradient (LDG). Higher equatorial diversity has been recognized for over 200 years, but the consistency of this pattern in deep time remains uncertain. Examination of spatial biodiversity patterns in the past across different global climate regimes and continental configurations can reveal how LDGs have varied over Earth history and potentially differentiate between suggested causal mechanisms. The Late Permian-Middle Triassic represents an ideal time interval for study, because it is characterized by large-scale volcanic episodes, extreme greenhouse temperatures and the most severe mass extinction event in Earth history. We examined terrestrial and marine tetrapod spatial biodiversity patterns using a database of global tetrapod occurrences. Terrestrial tetrapods exhibit a bimodal richness distribution throughout the Late Permian-Middle Triassic, with peaks in the northern low latitudes and southern mid-latitudes around 20-40° N and 60° S, respectively. Marine reptile fossils are known almost exclusively from the Northern Hemisphere in the Early and Middle Triassic, with highest diversity around 20° N. Reconstructed terrestrial LDGs contrast strongly with the generally unimodal gradients of today, potentially reflecting high global temperatures and prevailing Pangaean super-monsoonal climate system during the Permo-Triassic.

Authors+Show Affiliations

School of Earth and Environment, University of Leeds, Leeds, UK.School of Earth and Environment, University of Leeds, Leeds, UK.School of Earth and Environment, University of Leeds, Leeds, UK.Department of Earth Sciences, University of Oxford, Oxford, UK.School of Earth and Environment, University of Leeds, Leeds, UK.

Pub Type(s)

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

Language

eng

PubMed ID

32546099

Citation

Allen, Bethany J., et al. "The Latitudinal Diversity Gradient of Tetrapods Across the Permo-Triassic Mass Extinction and Recovery Interval." Proceedings. Biological Sciences, vol. 287, no. 1929, 2020, p. 20201125.
Allen BJ, Wignall PB, Hill DJ, et al. The latitudinal diversity gradient of tetrapods across the Permo-Triassic mass extinction and recovery interval. Proc Biol Sci. 2020;287(1929):20201125.
Allen, B. J., Wignall, P. B., Hill, D. J., Saupe, E. E., & Dunhill, A. M. (2020). The latitudinal diversity gradient of tetrapods across the Permo-Triassic mass extinction and recovery interval. Proceedings. Biological Sciences, 287(1929), 20201125. https://doi.org/10.1098/rspb.2020.1125
Allen BJ, et al. The Latitudinal Diversity Gradient of Tetrapods Across the Permo-Triassic Mass Extinction and Recovery Interval. Proc Biol Sci. 2020 06 24;287(1929):20201125. PubMed PMID: 32546099.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The latitudinal diversity gradient of tetrapods across the Permo-Triassic mass extinction and recovery interval. AU - Allen,Bethany J, AU - Wignall,Paul B, AU - Hill,Daniel J, AU - Saupe,Erin E, AU - Dunhill,Alexander M, Y1 - 2020/06/17/ PY - 2021/06/24/pmc-release PY - 2020/6/18/entrez PY - 2020/6/18/pubmed PY - 2020/9/2/medline KW - Tetrapoda KW - biodiversity KW - climate change KW - greenhouse KW - mass extinction KW - sampling bias SP - 20201125 EP - 20201125 JF - Proceedings. Biological sciences JO - Proc. Biol. Sci. VL - 287 IS - 1929 N2 - The decline in species richness from the equator to the poles is referred to as the latitudinal diversity gradient (LDG). Higher equatorial diversity has been recognized for over 200 years, but the consistency of this pattern in deep time remains uncertain. Examination of spatial biodiversity patterns in the past across different global climate regimes and continental configurations can reveal how LDGs have varied over Earth history and potentially differentiate between suggested causal mechanisms. The Late Permian-Middle Triassic represents an ideal time interval for study, because it is characterized by large-scale volcanic episodes, extreme greenhouse temperatures and the most severe mass extinction event in Earth history. We examined terrestrial and marine tetrapod spatial biodiversity patterns using a database of global tetrapod occurrences. Terrestrial tetrapods exhibit a bimodal richness distribution throughout the Late Permian-Middle Triassic, with peaks in the northern low latitudes and southern mid-latitudes around 20-40° N and 60° S, respectively. Marine reptile fossils are known almost exclusively from the Northern Hemisphere in the Early and Middle Triassic, with highest diversity around 20° N. Reconstructed terrestrial LDGs contrast strongly with the generally unimodal gradients of today, potentially reflecting high global temperatures and prevailing Pangaean super-monsoonal climate system during the Permo-Triassic. SN - 1471-2954 UR - https://www.unboundmedicine.com/medline/citation/32546099/The_latitudinal_diversity_gradient_of_tetrapods_across_the_Permo_Triassic_mass_extinction_and_recovery_interval_ L2 - https://royalsocietypublishing.org/doi/10.1098/rspb.2020.1125?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -