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    Comparing Dung Beetle Species Assemblages Between Protected Areas and Adjacent Pasturelands in a Mediterranean Savanna Landscape

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    Author
    Numa, Catherine
    Verdú, José R.
    Rueda, Cristina
    Galante, Eduardo
    Issue Date
    2012-03-01
    Keywords
    land use
    livestock management
    natural protected areas
    Scarabacoidea
    species diversity
    
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    Citation
    Numa, C., Verdú, J. R., Rueda, C., & Galante, E. (2012). Comparing dung beetle species assemblages between protected areas and adjacent pasturelands in a Mediterranean savanna landscape. Rangeland Ecology & Management, 65(2), 137-143.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/642619
    DOI
    10.2111/REM-D-10-00050.1
    Additional Links
    https://rangelands.org/
    Abstract
    Dung beetles are considered keystone species because of their role in decomposition, seed dispersal, and control of vertebrate parasites in grazed habitats. Despite the ecological importance of this group to pasture ecosystem functioning, still little is known about its relationship with grazing management activities. We evaluated the conservation value of protected areas for dung beetle diversity by comparing two different management conditions of Mediterranean savanna in central Spain. Four different sites with wild herbivory (red deer, roe deer) were sampled inside the Cabañeros National Park, and four sites with traditional agrosilvopastoral management were sampled in a sheep farm near the park. The dung beetle species richness was similar between savanna conditions, but the total dung beetle abundance and biomass were considerably greater in the park grasslands than in the grasslands of the sheep farm. Dung beetle species composition, species dominance, and abundance by functional groups from both park and farm sites were different, despite the high similarity among the sampled sites in both hydric content and dung availability. Onthophagus maki (Illiger 1803) and O. furcatus (Fabricius 1781) were the dominant species in the park, while O. furcatus, Aphodius foetidus (Herbst 1783), and Caccobius schreberi L. were the dominant species on the farm. Species richness and abundance of telecoprids were higher in the park than on the farm. Abundance of paracoprids was also higher in the park than on the farm, while no differences in species richness and abundance of endocoprids were observed between both conditions. These results suggest that management activities such as plowing and the use of veterinary substances affect soil structure and dung quality and could be important factors that alter dung beetle assemblages in terms of composition, abundance, and biomass on traditional farms./Los escarabajos coprófagos se consideran especies clave debido a su papel en la descomposición, dispersión de semillas y control de parásitos de vertebrados en los hábitats con pastoreo. A pesar de la importancia ecológica de este grupo para el funcionamiento de los ecosistemas de pastizal, aun se conoce poco acerca de su relación con el manejo del pastoreo. Evaluamos el valor de conservación de las áreas protegidas para la diversidad de escarabajos coprófagos, comparando dos tipos de manejo de la herbivoría en pastizales mediterráneos de España central. Se muestrearon cuatro sitios con alta herbivoría de ciervo y corzo dentro del Parque Nacional de Cabañeros y cuatro sitios en una granja de ovejas con manejo agrosilvo pastoral tradicional cerca del parque. La riqueza de especies de escarabajos coprófagos en las dos condiciones de manejo fue similar pero la abundancia y la biomasa fueron considerablemente mayor es en los pastizales del parque, que en los pastizales de la granja de ovejas. A pesar de la alta similitud entre los sitios muestreados en cuanto a disponibilidad y contenido hídrico del excremento, la composición, dominancia y grupos funcionales de especies fueron diferentes entre las dos condiciones de manejo. Onthophagus maki (Illiger 1803) y O. furcatus (Fabricius 1781) fueron las especies dominantes en el parque, mientras que O. furcatus, Aphodius foetidus (Herbst 1783) y Caccobius schreberi L. fueron las especies dominantes en la granja. La riqueza y abundancia de telecópridos fueron mayores en el parque que en la finca. La abundancia de paracópridos fue también mayor en el parque. Pero no se observaron diferencias en la riqueza y abundancia de endocópridos entre las dos condiciones de manejo. Estos resultados sugieren que algunas actividades del manejo de pastizales como la labranza y el uso de sustancias de uso veterinario que afectan la estructura del suelo y la calidad del excremento podrían ser factores importantes que alteran los ensambles de escarabajos coprófagos en términos de diversidad, abundancia y biomasa en las granjas de manejo tradicional.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2111/REM-D-10-00050.1
    Scopus Count
    Collections
    Rangeland Ecology & Management, Volume 65, Number 2 (March 2012)

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