Population rate of change in the leaf-eared mouse: The role of density-dependence, seasonality and rainfall

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dc.contributor.authorLima, M
dc.contributor.authorJaksic, FM
dc.date.accessioned2025-01-21T01:32:07Z
dc.date.available2025-01-21T01:32:07Z
dc.date.issued1999
dc.description.abstractWe analysed statistically the influence of density-dependent regulation, seasonality and precipitation on the realized population rate of change of the Neotropical rodent Phyllotis darwini (Waterhouse 1837) at an intraannual rime scale. We used four years of continuous live trapping at a semiarid locality of north central Chile. Results showed that density-dependence, seasonal effects and precipitation were important factors influencing population growth rates in this species. An empirical population model including a sine function fur seasonal effects, a linear form for density-dependence, and precipitation was fitted to the full data set and to the data set with the first year removed (after an outbreak). The empirical model explained 33% and 48% of the variance in population growth. The natural rate of population increase, estimated from the empirical model, was r(max) = 2.51 or 5.06 years(-1). These estimates indicate a great potential for population increase and may explain the capability of this species to undergo large irruptions. We propose that merging empirical and theoretical modelling with field research is the most promising avenue to understand the outbreaks experienced by some rodent species in western South America.
dc.fuente.origenWOS
dc.identifier.issn0307-692X
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97207
dc.identifier.wosidWOS:000079671300002
dc.issue.numero2
dc.language.isoen
dc.pagina.final116
dc.pagina.inicio110
dc.revistaAustralian journal of ecology
dc.rightsacceso restringido
dc.subjectChile
dc.subjectempirical model
dc.subjectoutbreaks
dc.subjectPhyllotis darwini
dc.subjectprecipitation
dc.subjectseasonality
dc.subjectsemiarid
dc.subject.ods13 Climate Action
dc.subject.ods15 Life on Land
dc.subject.odspa13 Acción por el clima
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titlePopulation rate of change in the leaf-eared mouse: The role of density-dependence, seasonality and rainfall
dc.typeartículo
dc.volumen24
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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