Extinctions: Bad Genes or WeakChaos?
Ricard V. Solé, JordiBascompte and Susanna C. Manrubia, 1996
Proceedings of the Royal Society London B, 263: 1407-1413.
cheap hotels in EgerABSTRACT: The dynamicsof extinction and diversification of life is not a simple random process,driven by arbitrary inputs. Biotic interactions are known to play a veryimportant role in the population response to physical factors. In spiteof this fact, it is not clear how the ecological scale is related withthe macroevolutionary one. In this paper we suggest that both levels are,at least to some extent, decoupled. Using a simple model of large-scaleevolution, we show how an n-species ecosystem evolves toward a criticalstate where extinctions of all sizes are generated. This state involvesa situation where high unpredictability is present. The basic propertiesof the overall macroevolutionary pattern are well reproduced and a newinterpretation for this process is suggested.
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