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When fossil clades ‘compete’: local dominance, global diversification dynamics and causation

Examining the supposition that local-scale competition drives macroevolutionary patterns has become a familiar goal in fossil biodiversity studies. However, it is an elusive goal, hampered by inadequate confirmation of ecological equivalence and interactive processes between clades, patchy sampling,...

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Autores principales: Lidgard, Scott, Di Martino, Emanuela, Zágoršek, Kamil, Liow, Lee Hsiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8456135/
https://www.ncbi.nlm.nih.gov/pubmed/34547910
http://dx.doi.org/10.1098/rspb.2021.1632
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author Lidgard, Scott
Di Martino, Emanuela
Zágoršek, Kamil
Liow, Lee Hsiang
author_facet Lidgard, Scott
Di Martino, Emanuela
Zágoršek, Kamil
Liow, Lee Hsiang
author_sort Lidgard, Scott
collection PubMed
description Examining the supposition that local-scale competition drives macroevolutionary patterns has become a familiar goal in fossil biodiversity studies. However, it is an elusive goal, hampered by inadequate confirmation of ecological equivalence and interactive processes between clades, patchy sampling, few comparative analyses of local species assemblages over long geological intervals, and a dearth of appropriate statistical tools. We address these concerns by reevaluating one of the classic examples of clade displacement in the fossil record, in which cheilostome bryozoans surpass the once dominant cyclostomes. Here, we analyse a newly expanded and vetted compilation of 40 190 fossil species occurrences to estimate cheilostome and cyclostome patterns of species proportions within assemblages, global genus richness and genus origination and extinction rates while accounting for sampling. Comparison of time-series models using linear stochastic differential equations suggests that inter-clade genus origination and extinction rates are causally linked to each other in a complex feedback relationship rather than by simple correlations or unidirectional relationships, and that these rates are not causally linked to changing within-assemblage proportions of cheilostome versus cyclostome species.
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spelling pubmed-84561352021-10-19 When fossil clades ‘compete’: local dominance, global diversification dynamics and causation Lidgard, Scott Di Martino, Emanuela Zágoršek, Kamil Liow, Lee Hsiang Proc Biol Sci Palaeobiology Examining the supposition that local-scale competition drives macroevolutionary patterns has become a familiar goal in fossil biodiversity studies. However, it is an elusive goal, hampered by inadequate confirmation of ecological equivalence and interactive processes between clades, patchy sampling, few comparative analyses of local species assemblages over long geological intervals, and a dearth of appropriate statistical tools. We address these concerns by reevaluating one of the classic examples of clade displacement in the fossil record, in which cheilostome bryozoans surpass the once dominant cyclostomes. Here, we analyse a newly expanded and vetted compilation of 40 190 fossil species occurrences to estimate cheilostome and cyclostome patterns of species proportions within assemblages, global genus richness and genus origination and extinction rates while accounting for sampling. Comparison of time-series models using linear stochastic differential equations suggests that inter-clade genus origination and extinction rates are causally linked to each other in a complex feedback relationship rather than by simple correlations or unidirectional relationships, and that these rates are not causally linked to changing within-assemblage proportions of cheilostome versus cyclostome species. The Royal Society 2021-09-29 2021-09-22 /pmc/articles/PMC8456135/ /pubmed/34547910 http://dx.doi.org/10.1098/rspb.2021.1632 Text en © 2021 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited.
spellingShingle Palaeobiology
Lidgard, Scott
Di Martino, Emanuela
Zágoršek, Kamil
Liow, Lee Hsiang
When fossil clades ‘compete’: local dominance, global diversification dynamics and causation
title When fossil clades ‘compete’: local dominance, global diversification dynamics and causation
title_full When fossil clades ‘compete’: local dominance, global diversification dynamics and causation
title_fullStr When fossil clades ‘compete’: local dominance, global diversification dynamics and causation
title_full_unstemmed When fossil clades ‘compete’: local dominance, global diversification dynamics and causation
title_short When fossil clades ‘compete’: local dominance, global diversification dynamics and causation
title_sort when fossil clades ‘compete’: local dominance, global diversification dynamics and causation
topic Palaeobiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8456135/
https://www.ncbi.nlm.nih.gov/pubmed/34547910
http://dx.doi.org/10.1098/rspb.2021.1632
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