1 Impresión: Este póster tiene un ancho de 122 cm y una altura de 92 cm. Está diseñado para imprimirse en una impresora de formato grande. Personalizar el contenido: Los marcadores de posición de este póster ya tienen formato. Especifique los marcadores de posición para agregar texto o haga clic en un icono para agregar una tabla, un gráfico, un gráfico SmartArt, una imagen o un archivo multimedia. Para agregar o quitar viñetas del texto, haga clic en el botón Viñetas de la pestaña Inicio. Si necesita más marcadores de posición para títulos, contenido o texto del cuerpo, haga una copia de lo que necesite y arrástrela a su posición. Las guías inteligentes de PowerPoint le ayudarán a alinearla con el resto del contenido. ¿Desea usar sus propias imágenes en lugar de las nuestras? No hay problema. Haga clic en una imagen, pulse la tecla Supr y luego haga clic en el icono para agregar la imagen. Investigating the possible effects of VOCs emitted by Quercus pyrenaica Willd. on saproxylic beetles assemblages of Mediterranean forests Project overview Materials and method Mediterranean forest ecosytem is one of the most unique and rich biodiversity landscapes in Europe. It hosts a large number of saproxylic beetles species, one of the groups that best indicates forest quality as they depend on dead wood and other related substrates of dead and alive trees. Plants emit volatile organic compounds (VOCs) that can act as a communication method to insects, neighboring plants and pathogens (Das et al., 2013). The aim of our project is to analyze the possible effect that the issuance of these volatile organic compounds emmited by tree species Quercus pyrenaica could have on the biodiversity of saproxylic beetles inhabiting these Mediterranean forests. Preliminary Results P. Ramilo, J.R. Guerrero, E. Micó, E. Galante | Centro Iberoamericano de la Biodiversidad, CIBIO. Instituto de Investigación. Universidad de Alicante. In the southwest of the province of Salamanca (Spain), it is one of the largest Iberian expanses of Quercus pyrenaica. Photography: Pablo Ramilo. VOCs sampling Beetles sampling Tree emission rates were studied using a dynamic flow-through enclosure Saproxylic beetles were captured using cross-vane window flight technique in which a teflon bag was attached to a branch for 24 hours. traps, which consisted of two perpendicular intercepting plastic The air flux was generated by a suction pump, coupled to a tube filled panels, with a funnel leading into a container located below with Tenax TA porous resin, allowing the retention of the volatile them and filled with propylene glycol for the preservation of compounds. the specimens collected. Finally, the samples were placed in the splitless injector of a GC/MS Beetles were identified to the species level collaborating with apparatus for the thermal desorption and analysis. our expert taxonomists network. · The enclosure technique has enabled to provide a list with some of the main VOCs emitted by Q. pyrenaica in Mediterranean forests of the Iberian peninsula (Table 1). · Saproxylic beetle fauna collected: 2135 individuals, 157 species and 38 families were identified so far. · Our experiment revealed a trend: larger sized trees emitted VOCs with higher intensity (Figure 1) and were home to a greater species richness of saproxylic beetles (Figure 2). Financial support was provided by the Spanish Minister of Science and EU FEDER Funds (CGL 2012-31669) and the Valencian Generalitat (PROMETEO/2013/034) Table 1. Summary of the main compounds emitted by tree species Q. pyrenaica. IsopreneHeptanalPhenolCamphorTetradecane Acetic acidAnisoleDecaneDodecaneLongifolene Tolueneβ-Pineneo-CymeneDecanalβ-Caryophyllene 1-OcteneCumeneCamphorCarvone7-Tetradecene OctaneCamphene2-Ethyl-1-hexanolAnethole1-Octadecene Hexanal2-EthylhexanalAcetophenoneα-TerpinenePentadecane EthylbenzeneBenzaldehydePhenylmethanolα-CopaeneΔ-Cadinene P-XyleneLimonene2-Phenyl-2-propanolTridecaneHexadecane α-Pinene1,8-CineoleUndecane1-HexadecanolBenzophenone NonaneSabineneNonanalβ-BourboneneNonadecane Figure 1. Emission levels in trees of different sizes.Figure 2. Species richness in trees of different sizes.