Considering the Case for Biodiversity Cycles: Re-Examining the Evidence for Periodicity in the Fossil Record
dc.contributor.author | Lieberman, Bruce S. | |
dc.contributor.author | Melott, Adrian L. | |
dc.date.accessioned | 2012-04-25T17:11:02Z | |
dc.date.available | 2012-04-25T17:11:02Z | |
dc.date.issued | 2007-04 | |
dc.identifier.citation | Lieberman, B. S., and A. L. Melott. 2007. Considering the case for biodiversity cycles: reexamining the evidence for periodicity in the fossil record. PLoS One 2(8) e759:1-9. http://dx.doi.org/10.1371/journal.pone.0000759 | |
dc.identifier.uri | http://hdl.handle.net/1808/9184 | |
dc.description.abstract | We re-examine the evidence for a 62 million year (Myr) periodicity in biodiversity throughout the Phanerozoic history of animal life reported by [1], as well as related questions of periodicity in origination and extinction. We find that the signal is robust against variations in methods of analysis, and is based on fluctuations in the Paleozoic and a substantial part of the Mesozoic. Examination of origination and extinction is somewhat ambiguous, with results depending upon procedure. Origination and extinction intensity as defined by [1] may be affected by an artifact at 27 Myr in the duration of stratigraphic intervals. Nevertheless, when a procedure free of this artifact is implemented, the 27 Myr periodicity appears in origination, suggesting that the artifact may ultimately be based on a signal in the data. A 62 Myr feature appears in extinction, when this same procedure is used. We conclude that evidence for a periodicity at 62 Myr is robust, and evidence for periodicity at approximately 27 Myr is also present, albeit more ambiguous. | |
dc.description.sponsorship | This research was supported by NASA Astrobiology: Exobiology and Evolutionary Biology grant NNG04GM14G to ALM and BSL and a Madison and Lila Self Faculty Fellowship to BSL; funding organizations did not have any role and were not involved in the design and conduct of the study, the collection, analysis, and interpretation of the data, and the preparation, review, or approval of the manuscript. | |
dc.language.iso | en_US | |
dc.publisher | Public Library of Science | |
dc.rights | (c)2007 Lieberman, Melott. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. | |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
dc.title | Considering the Case for Biodiversity Cycles: Re-Examining the Evidence for Periodicity in the Fossil Record | |
dc.type | Article | |
kusw.kuauthor | Lieberman, Bruce S. | |
kusw.kudepartment | Ecology and Evolutionary Biology | |
kusw.oastatus | fullparticipation | |
dc.identifier.doi | 10.1371/journal.pone.0000759 | |
kusw.oaversion | Scholarly/refereed, publisher version | |
kusw.oapolicy | This item meets KU Open Access policy criteria. | |
dc.rights.accessrights | openAccess |
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