Factors affecting red-legged partridge Alectoris Rufa abundance on big-game hunting estates: implications for management and conservation
[EN]: The red-legged partridge Alectoris rufa is not only the most important bird game species but also an important prey species for many predators in Iberia. However, its populations have significantly declined in recent decades, principally as the result of agricultural intensification on arable land. Its abundance has also undergone a significant decline in forested areas over the last few decades, where wild ungulate management and abundance have increased. In this scenario, we aimed to test the factors that affect red-legged partridge abundance in relation to high wild ungulate (wild boar and red deer) abundance in south-central Spain. The factors included as predictors were carnivore, wild boar and red deer abundances, vegetation features, nest predation rate and invertebrate availability. Red deer abundance showed a negative relationship with partridge abundance in spring (non-significant negative trends were also evident for carnivore and wild boar), whereas variables related to food availability (grass biomass, Hemipteran abundance and total invertebrate mass) had a positive effect in the same season. Moreover, deer and carnivore abundances and spring nest predation rate were negatively associated with partridge abundance in autumn. Plant biomass and Hemipteran abundance were negatively correlated with wild boar abundance, whereas maximum pasture height was negatively related to red deer and wild boar abundance. Overall, our results show that high ungulate densities may negatively affect partridge abundance, which may be mediated by (i) a reduction in food availability (invertebrate and herbaceous plant biomass) and (ii) nest predation by wild boar. This research has shown that current intensive big-game hunting management schemes in south-central Spain are often incompatible with red-legged partridge conservation, and that these effects should be taken into account when defining big-game management and conservation policies.
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Sociedad Española de Ornitología
2015
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Subjects: | Interspecific competition, Perdiz roja, Jabalí, Invertebrados, Gestión cinegética, Disponiblidad de alimento, Competencia interespecífica, Ciervo, Alectoris rufa, Food availability, Game management, Invertebrates, Red deer, Wild boar, |
Online Access: | http://hdl.handle.net/10261/141857 http://dx.doi.org/10.13039/501100011011 |
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Interspecific competition Perdiz roja Jabalí Invertebrados Gestión cinegética Disponiblidad de alimento Competencia interespecífica Ciervo Alectoris rufa Food availability Game management Invertebrates Red deer Wild boar Interspecific competition Perdiz roja Jabalí Invertebrados Gestión cinegética Disponiblidad de alimento Competencia interespecífica Ciervo Alectoris rufa Food availability Game management Invertebrates Red deer Wild boar |
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Interspecific competition Perdiz roja Jabalí Invertebrados Gestión cinegética Disponiblidad de alimento Competencia interespecífica Ciervo Alectoris rufa Food availability Game management Invertebrates Red deer Wild boar Interspecific competition Perdiz roja Jabalí Invertebrados Gestión cinegética Disponiblidad de alimento Competencia interespecífica Ciervo Alectoris rufa Food availability Game management Invertebrates Red deer Wild boar Carpio, Antonio J. Oteros, José Vicente, Joaquín Tortosa, Francisco S. Guerrero-Casado, José Factors affecting red-legged partridge Alectoris Rufa abundance on big-game hunting estates: implications for management and conservation |
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[EN]: The red-legged partridge Alectoris rufa is not only the most important bird game species but also an important prey species for many predators in Iberia. However, its populations have significantly declined in recent decades, principally as the result of agricultural intensification on arable land. Its abundance has also undergone a significant decline in forested areas over the last few decades, where wild ungulate management and abundance have increased. In this scenario, we aimed to test the factors that affect red-legged partridge abundance in relation to high wild ungulate (wild boar and red deer) abundance in south-central Spain. The factors included as predictors were carnivore, wild boar and red deer abundances, vegetation features, nest predation rate and invertebrate availability. Red deer abundance showed a negative relationship with partridge abundance in spring (non-significant negative trends were also evident for carnivore and wild boar), whereas variables related to food availability (grass biomass, Hemipteran abundance and total invertebrate mass) had a positive effect in the same season. Moreover, deer and carnivore abundances and spring nest predation rate were negatively associated with partridge abundance in autumn. Plant biomass and Hemipteran abundance were negatively correlated with wild boar abundance, whereas maximum pasture height was negatively related to red deer and wild boar abundance. Overall, our results show that high ungulate densities may negatively affect partridge abundance, which may be mediated by (i) a reduction in food availability (invertebrate and herbaceous plant biomass) and (ii) nest predation by wild boar. This research has shown that current intensive big-game hunting management schemes in south-central Spain are often incompatible with red-legged partridge conservation, and that these effects should be taken into account when defining big-game management and conservation policies. |
author2 |
Diputación de Córdoba |
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Diputación de Córdoba Carpio, Antonio J. Oteros, José Vicente, Joaquín Tortosa, Francisco S. Guerrero-Casado, José |
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Interspecific competition Perdiz roja Jabalí Invertebrados Gestión cinegética Disponiblidad de alimento Competencia interespecífica Ciervo Alectoris rufa Food availability Game management Invertebrates Red deer Wild boar |
author |
Carpio, Antonio J. Oteros, José Vicente, Joaquín Tortosa, Francisco S. Guerrero-Casado, José |
author_sort |
Carpio, Antonio J. |
title |
Factors affecting red-legged partridge Alectoris Rufa abundance on big-game hunting estates: implications for management and conservation |
title_short |
Factors affecting red-legged partridge Alectoris Rufa abundance on big-game hunting estates: implications for management and conservation |
title_full |
Factors affecting red-legged partridge Alectoris Rufa abundance on big-game hunting estates: implications for management and conservation |
title_fullStr |
Factors affecting red-legged partridge Alectoris Rufa abundance on big-game hunting estates: implications for management and conservation |
title_full_unstemmed |
Factors affecting red-legged partridge Alectoris Rufa abundance on big-game hunting estates: implications for management and conservation |
title_sort |
factors affecting red-legged partridge alectoris rufa abundance on big-game hunting estates: implications for management and conservation |
publisher |
Sociedad Española de Ornitología |
publishDate |
2015 |
url |
http://hdl.handle.net/10261/141857 http://dx.doi.org/10.13039/501100011011 |
work_keys_str_mv |
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dig-ias-es-10261-1418572022-11-23T11:36:15Z Factors affecting red-legged partridge Alectoris Rufa abundance on big-game hunting estates: implications for management and conservation Factores que afectan a la abundancia de la perdiz roja Alectoris rufa en cotos de caza mayor: implicaciones para la gestión y conservación Carpio, Antonio J. Oteros, José Vicente, Joaquín Tortosa, Francisco S. Guerrero-Casado, José Diputación de Córdoba Junta de Andalucía Interspecific competition Perdiz roja Jabalí Invertebrados Gestión cinegética Disponiblidad de alimento Competencia interespecífica Ciervo Alectoris rufa Food availability Game management Invertebrates Red deer Wild boar [EN]: The red-legged partridge Alectoris rufa is not only the most important bird game species but also an important prey species for many predators in Iberia. However, its populations have significantly declined in recent decades, principally as the result of agricultural intensification on arable land. Its abundance has also undergone a significant decline in forested areas over the last few decades, where wild ungulate management and abundance have increased. In this scenario, we aimed to test the factors that affect red-legged partridge abundance in relation to high wild ungulate (wild boar and red deer) abundance in south-central Spain. The factors included as predictors were carnivore, wild boar and red deer abundances, vegetation features, nest predation rate and invertebrate availability. Red deer abundance showed a negative relationship with partridge abundance in spring (non-significant negative trends were also evident for carnivore and wild boar), whereas variables related to food availability (grass biomass, Hemipteran abundance and total invertebrate mass) had a positive effect in the same season. Moreover, deer and carnivore abundances and spring nest predation rate were negatively associated with partridge abundance in autumn. Plant biomass and Hemipteran abundance were negatively correlated with wild boar abundance, whereas maximum pasture height was negatively related to red deer and wild boar abundance. Overall, our results show that high ungulate densities may negatively affect partridge abundance, which may be mediated by (i) a reduction in food availability (invertebrate and herbaceous plant biomass) and (ii) nest predation by wild boar. This research has shown that current intensive big-game hunting management schemes in south-central Spain are often incompatible with red-legged partridge conservation, and that these effects should be taken into account when defining big-game management and conservation policies. [ES]: La perdiz roja Alectoris rufa no solo es el ave de caza más importante, sino que también es una importante presa para muchos depredadores en Iberia. Sin embargo, sus poblaciones han disminuido significativamente en las últimas décadas, principalmente como resultado de la intensificación de la agricultura en zonas agrícolas. Sus abundancias también han sufrido un descenso significativo en zonas forestales durante los últimos decenios donde la gestión de ungulados silvestres y sus abundancias se han incrementado. En este escenario, nuestro objetivo ha sido evaluar los factores que afectan a la abundancia de perdiz roja en un contexto de alta abundancia de ungulados silvestres (jabalí y ciervo) en el centro-sur de España. Los factores incluidos como predictores fueron la abundancia de carnívoros, jabalí y ciervo, las características de la vegetación, la proporción de nidos depredados y la disponibilidad de invertebrados. La abundancia de ciervo mostró una relación negativa con la abundancia de perdiz en primavera (también se evidenciaron tendencias negativas no significativas para carnívoros y jabalí), mientras que las variables relativas a la disponibilidad de alimento (biomasa herbácea, abundancia de hemípteros y el peso total de los invertebrados) tuvieron un efecto positivo en la misma estación. Por otra parte, en otoño, la abundancia de ciervos y carnívoros, y la tasa de depredación de nidos en primavera se asociaron negativamente con la abundancia de perdiz. La biomasa de herbáceas y la abundancia de hemípteros se correlacionaron negativamente con la abundancia de jabalíes, mientras que la altura máxima del pasto estuvo negativamente asociada con la abundancia de ciervo y jabalí. En general, nuestros resultados muestran que las altas densidades de ungulados podrían afectar negativamente a la abundancia de perdiz mediado por (i) una reducción en la disponibilidad de alimento (invertebrados y biomasa de herbáceas) y (ii) la depredación de nidos por el jabalí. Esta investigación ha puesto de manifiesto que los actuales sistemas intensivos de gestión de la caza mayor en el centro-sur de España no son compatibles con la conservación de la perdiz roja, y que por lo tanto, estos efectos deben ser considerados a la hora de definir las políticas para la gestión de la caza mayor y la conservación. To the Environmental Council of the Andalusian Autonomous Government for financing this work via a project to improve the habitat of the black vulture Aegypius monachus in Córdoba province. Peer Reviewed 2016-12-23T11:44:35Z 2016-12-23T11:44:35Z 2015 2016-12-23T11:44:35Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.13157/arla.62.2.2015.283 issn: 0570-7358 Ardeola 62(2): 283-297 (2015) http://hdl.handle.net/10261/141857 10.13157/arla.62.2.2015.283 http://dx.doi.org/10.13039/501100011011 Publisher's version https://doi.org/10.13157/arla.62.2.2015.283 Sí open Sociedad Española de Ornitología BioOne |