Seasonal variation in the diet of two predators in an agroecosystem in southern-central Chile

Simple item page
dc.contributor.authorZuniga, A. H.
dc.contributor.authorFuenzalida, V
dc.contributor.authorSandoval, R.
dc.contributor.authorEncina, F.
dc.date2021
dc.date.accessioned2021-10-04T18:44:53Z
dc.date.available2021-10-04T18:44:53Z
dc.description.abstractIn ecosystems, seasonal fluctuations in the availability of resources can promote effects on species with similar trophic requirements, increasing the probability of interspecific competition. This scenario becomes more evident in human-dominated landscapes where homogenization of space can contribute to the shortage of resources, modifying species feeding behavior to an uncertain degree. Understanding how these species modify their feeding habits within the context of habitat transformation is of special interest. We evaluated the diversity of prey and overlap for two predators, the chilla fox Lycalopex griseus and the barn owl Tyto alba, during three seasons in 2018 (winter, spring and summer). The study was based on the analysis of feces and pellets in a landscape with agricultural predominance in Southern-central Chile. We found the chilla fox had a generalist dietary profile, feeding on a broad spectrum of prey, with predominance of lagomorphs and, to a lesser extent, rodents.In contrast, the diet of the barn owl mainly consisted of small rodents, with little variation across seasons. Analyses of dietary overlap showed fluctuations during the periods surveyed, with a maximum value in winter and a minimum value in spring. Variations in the consumption of prey based on their size could facilitate their coexistence in the study area.
dc.identifier.citationANIMAL BIODIVERSITY AND CONSERVATION,Vol.44,89-102,2021
dc.identifier.doi10.32800/abc.2021.44.0089
dc.identifier.urihttp://repositoriodigital.uct.cl/handle/10925/4321
dc.language.isoen
dc.publisherMUSEU DE CIENCIES NATURALS-ZOOLOGIA
dc.sourceANIMAL BIODIVERSITY AND CONSERVATION
dc.subject.englishBarn owl
dc.subject.englishChilla fox
dc.subject.englishDiet overlap
dc.subject.englishFeeding behavior
dc.subject.englishNon-invasive methods
dc.subject.englishTrophic isoclines
dc.titleSeasonal variation in the diet of two predators in an agroecosystem in southern-central Chile
dc.typeArticle
uct.indizacionSCI
Files
Collections
MigraciĆ³n Web of Science