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dc.contributor.authorGarcía González, María Begoña-
dc.contributor.authorPicó, F. Xavier-
dc.contributor.authorEhrlén, Johan-
dc.identifier.citationAmerican Journal of Botany, 95(2): 258–262. 2008.es_ES
dc.description.abstractSurvival and fecundity are basic components of demography and therefore have a strong influence on population dynamics. These two key parameters and their relationship are crucial to understand the evolution of life histories. It remains, however, to be empirically established how life span, fecundity, and population dynamics are linked in different organism groups. We conducted a comparative study based on demographic data sets of 55 populations of 23 perennial herbs for which structured demographic models and among-year natural variation in demographic attributes were available. Life span (from 4 to 128 yr old), estimated by using an algorithm, was inversely correlated with the deviance of the population growth rate from equilibrium as well as with among-year population fluctuations. Temporal variability was greater for short-lived species than for the long-lived ones because fecundity was more variable than survival and relatively more important for population dynamics for the short-lived species. The relationship between life span and population stability suggests that selection for longevity may have played an important role in the life history evolution of plants because of its ability to buffer temporal fluctuations in population sizees_ES
dc.publisherBotanical Society of Americaes_ES
dc.subjectlife-cycle componentses_ES
dc.subjectlife history evolutiones_ES
dc.subjectmatrix modelses_ES
dc.subjectperennial herbses_ES
dc.subjectpopulation growth ratees_ES
dc.subjecttemporal variabilityes_ES
dc.titleLife span correlates with population dynamics in perennial herbaceous plantses_ES
dc.description.peerreviewedPeer reviewedes_ES
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