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Ecosistemas
Article . 2014
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Rasgos funcionales en el género Quercus: estrategias adquisitivas frente a conservativas en el uso de recursos

Authors: E. G. de la Riva; I. M. Pérez Ramos; C. M. Navarro Fernández; M. Olmo; T. Marañón; R. Villar;

Rasgos funcionales en el género Quercus: estrategias adquisitivas frente a conservativas en el uso de recursos

Abstract

[EN]: Quercus species constitute one of the most abundant and important group of woody plant species in the Iberian Peninsula, and its geographical distribution is largely determined by water availability, soil type and management history. Understanding the variation of their morpho-functional traits can help us to better understand the degree of diversification of species belonging to the same genus and the mechanisms that control their distribution patterns. The main objectives of this study are: (i) to analyze the relationships between different functional traits in the Quercus genus and test how these functional traits are related with species-specific resource-use strategies; and (ii) to explore the coordination between functional traits at the leaf, stem and root levels. The sampling was conducted in Sierra Morena (Córdoba) and Sierra del Aljibe (Cádiz). Several key functional traits were measured at the leaf, stem, root, plant-size and physiological level in five species of Quercus (Q. canariensis, Q. coccifera, Q. faginea, Q. ilex and Q. suber). The results of this study showed that the studied Quercus species exhibit clear different patterns in their functional strategies that are related to their distribution. This distribution shows a gradient from species associated to a conservative use of resources in water-limited conditions to more acquisitive species which are more dominant in wetter areas. In turn, we found a strong coordination between functional traits belonging to different plant organs (leaves, stem and roots), supporting the existence of an “economic spectrum” at the whole plant level.

[ES]: Las especies del género Quercus constituyen uno de los grupos más abundantes e importantes de plantas leñosas de la Península Ibérica, estando su distribución determinada por la disponibilidad de agua, el tipo de suelo y la historia del manejo. El conocimiento de la variación de sus características morfo-funcionales puede ayudarnos a comprender el grado de diversificación de las especies del mismo género y los mecanismos que controlan sus patrones de distribución. Los objetivos principales de este estudio son: (i) analizar las relaciones existentes entre los diferentes rasgos funcionales dentro del género Quercus y testar cómo se ajustan a las estrategias de captación de recursos; y (ii) comprobar si existe coordinación entre los rasgos medidos a nivel de hoja, tallo y raíz. El muestreo se llevó a cabo en Sierra Morena (Córdoba) y la Sierra del Aljibe (Cádiz), cuantificándose rasgos funcionales claves a nivel de hoja, tallo, raíz, tamaño de planta y fisiología en cinco especies de Quercus (Q. canariensis, Q. coccifera, Q. faginea, Q. ilex y Q. suber). Los resultados muestran que las diferentes especies de Quercus presentan claros patrones en sus estrategias funcionales que están relacionados con su distribución, encontrando un gradiente desde especies más conservativas en el uso de recursos en condiciones de menor disponibilidad de agua a especies más adquisitivas en zonas más húmedas. A su vez, se aprecia una coordinación entre los patrones de rasgos funcionales encontrados a nivel de hoja, tallo y de raíz que apoya la existencia de un “espectro de economía” a nivel de la planta entera.

Este trabajo ha sido posible gracias a los proyectos de investigación Diverbos (CGL2011-30285-C02-01 y C02-02) financiado por el MINECO, Anasinque (PE2010-RNM-5782) financiado por laJunta de Andalucía, Life + Biodehesa Project (11/BIO/ES/000726) y a los fondos europeos FEDER.

8 páginas.-- 3 figuras.-- 3 tablas.-- 60 referencias.-- MONOGRAFÍCO: Ecología y gestión de las especies de Quercus

Peer reviewed

Keywords

Environmental sciences, Quercíneas, Rasgos funcionales, GE1-350, Área específica radicular, Espectro de economía, Área específica foliar

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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.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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