Knowledge Gaps and Missing Links in Understanding Mass Extinctions: Can Mathematical Modeling Help?

Ivan Sudakow, Corinne E. Myers, Sergei Petrovskii*, Colin D. Sumrall, James D Witts

*Corresponding author for this work

Research output: Contribution to journalReview article (Academic Journal)peer-review

14 Citations (Scopus)

Abstract

Extinction of species, and even clades, is a normal part of the macroevolutionary process. However, several times in Earth history the rate of species and clade extinctions increased dramatically compared to the observed “background” extinction rate. Such episodes are global, short-lived, and associated with substantial environmental changes, especially to the carbon cycle. Consequently, these events are dubbed “mass extinctions” (MEs). Investigations surrounding the circumstances causing and/or contributing to mass extinctions are on-going, but consensus has not yet been reached, particularly as to common ME triggers or periodicities. In part this reflects the incomplete nature of the fossil and geologic record, which – although providing significant information about the taxa and paleoenvironmental context of MEs – is spatiotemporally discontinuous and preserved at relatively low resolution. Mathematical models provide an important opportunity to potentially compensate for missing linkages in data availability and resolution. Mathematical models may provide a means to connect ecosystem scale processes (i.e., the extinction of individual organisms) to global scale processes (i.e., extinction of whole species and clades). Such a view would substantially improve our understanding not only of how MEs precipitate, but also how biological and paleobiological sciences may inform each other. Here we provide suggestions for how to integrate mathematical models into ME research, starting with a change of focus from ME triggers to organismal kill mechanisms since these are much more standard across time and spatial scales. We conclude that the advantage of integrating mathematical models with standard geological, geochemical, and ecological methods is great and researchers should work towards better utilization of these methods in ME investigations.
Original languageEnglish
Pages (from-to)22-57
Number of pages36
JournalPhysics of Life Reviews
Volume41
DOIs
Publication statusPublished - 15 Apr 2022

Bibliographical note

Funding Information:
This work was begun as part of the Nonlinearity in Past Mass Extinctions Working Group at the National Institute for Mathematical and Biological Synthesis (NIMBioS) supported by the National Science Foundation through NSF Award DBI-1300426 , with additional support from The University of Tennessee, Knoxville . Support of the NIMBioS director Lou Gross is greatly appreciated. I.S. gratefully acknowledges support from the Division of Physics at the National Science Foundation through Grant PHY-2102906 .

Publisher Copyright:
© 2022 Elsevier B.V.

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