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Impactos de la alta densidad de ciervo y jabalí sobre la perdiz roja

Authors: Guerrero-Casado, José; Carpio, Antonio J.; Oteros, José; Vicente, Joaquín; Tortosa, Francisco S.;

Impactos de la alta densidad de ciervo y jabalí sobre la perdiz roja

Abstract

En zonas forestales, las densidades de perdiz roja (Alectoris rufa) se han visto reducidas a la vez que las densidades de jabalí (Sus scrofa) y ciervo (Cervus elaphus) han aumentado notablemente como consecuencia de la gestión cinegética encaminada a fomentar sus poblaciones, y por lo tanto estas altas densidades de ungulados podrían afectar a la perdiz roja mediante una reducción en la disponibilidad de alimento y por depredación de nidos en el caso del jabalí. Para comprobar si existe dicho efecto se realizaron una serie de experimentos en 9 fincas de caza mayor cuyos objetivos fueron: a) testar el papel del jabalí como depredador de nidos de perdiz; y b) relacionar la abundancia de perdiz, jabalí y ciervo mediante la técnica de los mínimos cuadrados parciales (PLS), incluyendo otras variables como abundancia de los grupos de invertebrados y las familias botánicas más importantes en la dieta de la perdiz, biomasa vegetal, biomasa de invertebrados, y abundancia de carnívoros, con el fin de conocer los factores que influyen en la abundancia de perdiz en las fincas de caza mayor. Los resultados mostraron que: a) el jabalí fue el principal depredador de nidos de perdiz, consumiendo un 36% de los nidos artificiales colocados; b) la abundancia de perdiz estuvo negativamente relacionada con la tasa de depredación de nidos y con la densidad de ciervo, jabalí y carnívoros, mientras que se encontró una relación positiva con la abundancia de hemípteros, con la biomasa de invertebrados y la biomasa vegetal; y c) los hemípteros así como la biomasa y altura del pasto se vieron afectados negativamente por los ungulados. Todos estos resultados ponen de manifiesto la incompatibilidad de altas densidades de ciervo y jabalí con la conservación de la perdiz roja en fincas de caza mayor.

Resumen del trabajo presentado al XXII Congreso Español de Ornitología: "Aves y ser humano: una relación variable", celebrado en Madrid del 6 al 9 de diciembre del 2014.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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