Ricard V. Solé, DavidAlonso, Jordi Bascompte and Susanna C. Manrubia, 2001
Fractals, in press.
ABSTRACT: In recent studies,a new class of models dealing with evolutionary processes on the largetime scale have shown that many of the general traits of the fossil recordcan be reproduced under some simple assumptions. Additionally, the studyof living ecosystems and their network organization, as wella s the timeseries analysis of population fluctuations points in the direction thatcomplex ecosystems are organized close to instability points where extinctionof species and ecological turnover would be the rule. In this paper wefurther explore these ideas and their implications for our understandingof evolution as a complex dynamical process with some universal featureslinked with network-level properties. In particular a source for the decouplingbetween micro- and macroevolutionary mechanisms is provided.
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