2011
DOI: 10.14198/cdbio.2011.34.01
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Lo que las oquedades esconden

Abstract: What the hollows hide? Saproxylic insects comprise the largest component of the biodiversity in terrestrial ecosystems. They are the responsible for the mechanical breakdown of woody material both directly, by tunnelling and feeding in living trees that are decaying, snags (standing dead trees) and logs (fallen trees, portions of trunk and large branches), or indirectly, through symbiotic relationships with fungi and other micro-organisms that humidify wood. In this paper we open a door to reflection about the… Show more

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Cited by 5 publications
(4 citation statements)
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“…By this reason, a similar composition of non-hubs nodes occurred among sub-modules, and nodes of the same feeding guild tended to have similar ecological roles [52] , therefore presenting similar topological properties [5] . The role composition obtained for this modular network could be associated with the high abundance and heterogeneity of tree hollows characteristic of Mediterranean forests [20] , providing a diverse range of microhabitats and availability of trophic resources that allow to establish at least several weak interconnections for each insect species conforming this saproxylic community. In fact, the most interconnected nodes of the whole network mainly corresponded with a limited proportion of big tree hollows (corresponding with the highest internal volumes along the matrix of tree hollows studied, ranging from 0.1 to 0.28 m 3 ), which in general housed high amount of trophic resources/microhabitats as dead and decay wood, and therefore hosts/preys for indirect fauna.…”
Section: Discussionmentioning
confidence: 99%
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“…By this reason, a similar composition of non-hubs nodes occurred among sub-modules, and nodes of the same feeding guild tended to have similar ecological roles [52] , therefore presenting similar topological properties [5] . The role composition obtained for this modular network could be associated with the high abundance and heterogeneity of tree hollows characteristic of Mediterranean forests [20] , providing a diverse range of microhabitats and availability of trophic resources that allow to establish at least several weak interconnections for each insect species conforming this saproxylic community. In fact, the most interconnected nodes of the whole network mainly corresponded with a limited proportion of big tree hollows (corresponding with the highest internal volumes along the matrix of tree hollows studied, ranging from 0.1 to 0.28 m 3 ), which in general housed high amount of trophic resources/microhabitats as dead and decay wood, and therefore hosts/preys for indirect fauna.…”
Section: Discussionmentioning
confidence: 99%
“…We selected Coleoptera and Diptera as study groups at the hollow level, because they are the best known and represented groups in forests [30] – [32] , allowing us to study the network properties from a quantitative point of view. We considered the Syrphidae as a bioindicator of species and interaction richness among the Diptera, because i) they have been traditionally used next to beetles in studies concerning saproxylic insects [33] , [34] , and present a high number of saproxylic species around Europe [33] , using a wide range of microhabitats [35] , what has led them to be used as indicators of woodland quality [24] , [34] , to be flagships for the conservation of the wider community of saproxylic organisms [35] or to be included in national red lists [36] , and ii) they represent the best studied family (or just the unique) of Diptera in the study site, presenting high number and abundance of mainly exclusive saproxylic species highly strengthened with tree hollow microhabitats [20] .…”
Section: Methodsmentioning
confidence: 99%
“…A pesar de que los estudios sobre las estructura de los ensambles de las especies de coleópteros y sírfidos saproxílicos es relativamente reciente, habiéndose incrementado durante los últimos años el esfuerzo por conocer la diversidad y estructura de las comunidades de insectos saproxílicos en España, el conocimiento de la diversidad saproxílica es aún muy limitado en un elevado porcentaje de las formaciones boscosas del mediterráneo en general y del territorio ibérico en : 13-24 particular (i.e. Ricarte et al, 2009;Marcos-García et al, 2010;Ricarte et al, 2011;Micó et al, 2013a;Ramírez-Hernández, 2014).…”
Section: Organismos Saproxílicos: Concepto E Importancia Ecológicaunclassified
“…Cada uno de sus bosques mediterráneos atesora un singular elenco de insectos saproxílicos García-López et al, 2014), cuya riqueza y exclusividad de especies depende en gran medida de la heterogeneidad y abundancia de microhábitats y de recursos tróficos, factores asociados con el grado de madurez del bosque . Sin lugar a dudas, las oquedades arbóreas albergan una de las comunidades más ricas e interesantes de los bosques de Cabañeros (Marcos-García et al, 2010;Quinto et al, 2013), dando además cobijo a seis especies de insectos saproxílicos con distinto grado : 1-6 de amenaza según criterios de la UICN (Nieto & Alexander, 2010).…”
Section: Los Insectos Saproxílicos Del Par-que Nacional De Cabañerosunclassified