Simple model of recovery dynamics after mass extinction |
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Authors: | Ricard V Solé Joan Saldaña Douglas H Erwin |
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Institution: | a ICREA-Complex Systems Lab, Universitat Pompeu Fabra, Dr. Aiguader 80, 08003 Barcelona, Spain b Santa Fe Institute, 1399 Hyde Park Road, NM 87501, USA c Departament d’Informàtica i Matemàtica Aplicada, Universitat de Girona, 17071 Girona, Spain d Department of Marine Biology and Oceanography, CMIMA-CSIC, Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Spain e Department of Paleobiology, MRC-121 National Museum of Natural History, Washington, DC 20560, USA |
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Abstract: | Biotic recoveries following mass extinctions are characterized by a complex set of dynamics, including the rebuilding of whole ecologies from low-diversity assemblages of survivors and opportunistic species. Three broad classes of diversity dynamics during recovery have been suggested: an immediate linear response, a logistic recovery, and a simple positive feedback pattern of species interaction. Here we present a simple model of recovery which generates these three scenarios via differences in the extent of species interactions, thus capturing the dynamical logic of the recovery pattern. The model results indicate that the lag time to biotic recovery increases significantly as biotic interactions become more important in the recovery process. |
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Keywords: | Extinction Diversification Recovery Mean field model Fossil record |
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