El Nino events, precipitation patterns, and rodent outbreaks are statistically associated in semiarid Chile

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dc.contributor.authorLima, M
dc.contributor.authorMarquet, PA
dc.contributor.authorJaksic, FM
dc.date.accessioned2025-01-21T01:32:08Z
dc.date.available2025-01-21T01:32:08Z
dc.date.issued1999
dc.description.abstractIn the last two decades, several researchers have noted rodent population outbreaks in semiarid South America, in association with unusually high precipitation that seemingly concurs with Ei Nino events. To date, no studies have been conducted to determine the statistical relationships between ENSO (El Nino Southern Oscillation) events. increased precipitation, and rodent irruptions. Here we show that: 1) there is a statistical association between ENSO events and increased precipitation in the semiarid region of northern Chile, 2) the occurrence or rodent outbreaks in that region is statistically related with the precipitation levels of the same year; 3) the multi-annual patterns of the total annual precipitation levels and population abundance of those rodents Juring the summer are positively associated. The putative chain of effects seems to start with unusually high rainfall brought by ENSO to semiarid environments. which thus respond with increased primary productivity (herbage and seeds), which then fuels the rodent outbreaks.
dc.fuente.origenWOS
dc.identifier.issn0906-7590
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97212
dc.identifier.wosidWOS:000079864200012
dc.issue.numero2
dc.language.isoen
dc.pagina.final218
dc.pagina.inicio213
dc.revistaEcography
dc.rightsacceso restringido
dc.subject.ods15 Life on Land
dc.subject.ods13 Climate Action
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa13 Acción por el clima
dc.titleEl Nino events, precipitation patterns, and rodent outbreaks are statistically associated in semiarid Chile
dc.typeartículo
dc.volumen22
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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