Top-down and bottom-up control on cougar and its prey in a central Mexican natural reserve

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:33:34Z
Fecha de publicación2017-01-01
ResumenTop-down and bottom-up controls are hypothesized to regulate population structures in many ecosystems. However, few studies have had the opportunity to analyze both processes in the natural environment, especially on large carnivores like the cougar (Puma concolor). Previously, studies show that cougar diet in the Sierra Nanchititla Natural Reserve (SNNR), central Mexico, is mainly armadillo, coati, and white-tailed deer. We assess whether top-down and/or bottom-up control regulate this endangered food web: (a) we predicted that seasonal per capita changes in abundance (pca) of cougar will be positively affected by the abundance of their main prey; (b) primary productivity in SNNR will affect the pca of prey species, driving bottom-up control; and (c) armadillo, coati, and white-tailed deer pca will be affected by the abundance of cougar, generating top-down control. Using 15 camera traps for 6 years in the SNNR, we calculated a relative abundance index (RAI) and pca for cougar and each of the focal prey, and we used the normalized difference vegetation index (NDVI) as a proxy of primary productivity. We constructed multiple regression models and selected the best linear models based on ranking the AICc values. Our analysis suggests that P. concolor pca is best explained by bottom-up control and intraspecific feedback. White-tailed deer and armadillo pca were both significantly affected by cougar abundance, indicating top-down control for these prey species, but NDVI was not retained in any of the models selected for prey pca. Our results indicate that both bottom-up and top-down control are involved in regulating this endangered food web in the SNNR, Mexico.es_ES
Doihttps://doi.org/10.1007/s10344-017-1129-yes_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/5402
Idiomaenes_ES
EditorialSPRINGERes_ES
RelaciónEuropean Journal of Wildlife Researches_ES
URL relacionadohttps://doi.org/10.1007/s10344-017-1129-yes_ES
DerechosAcceso abierto (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_abf2es_ES
FuenteEuropean Journal of Wildlife Research
Palabra claveCompetitiones_ES
Palabra claveFood webes_ES
Palabra claveMexicoes_ES
Palabra claveNDVIes_ES
Palabra clavePredator-preyes_ES
Palabra claveSpecies interactionses_ES
TítuloTop-down and bottom-up control on cougar and its prey in a central Mexican natural reservees_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorSoria-Diaz, Leroy
AutorFowler, Mike S.
AutorMonroy-Vilchis, Octavio
AutorSoria-Diaz, Leroyes_ES
AutorFowler, Mike S.es_ES
AutorMonroy-Vilchis, Octavioes_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número5es_ES
URL relacionadahttps://doi.org/10.1007/s10344-017-1129-y
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen63es_ES

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