Imbert Rodríguez, Bosco
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Imbert Rodríguez
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Bosco
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Ciencias
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IMAB. Research Institute for Multidisciplinary Applied Biology
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Publication Open Access Constrained trait variation by water availability modulates radial growth in evergreen and deciduous mediterranean oaks(Elsevier, 2024) González de Andrés, Ester; Serra-Maluquer, Xavier; Gazol, Antonio; Olano, José Miguel; García Plazaola, José Ignacio; Fernández Marín, Beatriz; Imbert Rodríguez, Bosco; Coll, Lluís; Ameztegui, Aitor; Espelta, Josep Maria; Alla, Arben Q.; Camarero, Jesús Julio; Ciencias; Zientziak; Institute for Multidisciplinary Research in Applied Biology - IMABSpatial and temporal variation in functional traits allows trees to adjust to shifting environmental conditions such as water stress. However, the change of traits, both mean and variances, along water availability gradients and across growing seasons, as well as their covariation with tree performance, have been rarely assessed. We examined intraspecific trait variation in coexisting evergreen (Quercus ilex ssp. ilex and Q. ilex ssp. ballota) and deciduous (Quercus faginea and Quercus humilis) Mediterranean oaks along a wide water availability gradient in northeastern Spain during six years. We measured leaf area (LA), shoot twig mass (Sm), leaf mass per area (LMA) and the ratio of shoot twig to leaf biomass (Sm:Lm). We characterized tree performance through basal area increment (BAI) and drought resilience indices. Higher variation was found within individuals than between individuals across populations and years. Within species, we found trait adjustments toward more conservative water-use (low LA and Sm and high LMA) with increasing drier conditions. Intraspecific trait variation was constrained by water availability, particularly on the deciduous species. In Q. ilex, trait variance of LMA positively covaried with annual BAI, whereas variance of LA, Sm and Sm:Lm was positively related to resistance and resilience against the severe 2012 drought in deciduous oaks. Our results support a tradeoff between the ability to tolerate drought and the capacity to cope with unpredictable changes in the environment through increased intraspecific trait variation, which may have implications on tree performance in the face of increased extreme events.Publication Open Access SilvAdapt.Net: a site-based network of adaptive forest management related to climate change in Spain(MDPI, 2021) Molina, Antonio J.; Navarro Cerrillo, Rafael M.; Pérez-Romero, Javier; Alejano, Reyes; Bellot, Juan F.; Blanco Vaca, Juan Antonio; Camarero, Jesús Julio; Carrara, Arnaud; Castillo, Víctor M.; Cervera, Teresa; Barberá, Gonzalo G.; González-Sanchis, María; Hernández, Álvaro; Imbert Rodríguez, Bosco; Jiménez, María N.; Llorens, Pilar; Lucas Borja, Manuel Esteban; Moreno, Gerardo; Moreno de las Heras, Mariano; Navarro, Francisco B.; Palacios, Guillermo; Palero, Noemí; Ripoll, María A.; Regüés, D.; Ruiz Gómez, Francisco Javier; Vilagrosa, Alberto; Campo, Antonio D. del; Ciencias; ZientziakAdaptive forest management (AFM) is an urgent need because of the uncertainty regarding how changes in the climate will affect the structure, composition and function of forests during the next decades. Current research initiatives for the long-term monitoring of impacts of silviculture are scattered and not integrated into research networks, with the consequent losses of opportunities and capacity for action. To increase the scientific and practical impacts of these experiences, it is necessary to establish logical frameworks that harmonize the information and help us to define the most appropriate treatments. In this context, a number of research groups in Spain have produced research achievements and know-how during the last decades that can allow for the improvement in AFM. These groups address the issue of AFM from different fields, such as ecophysiology, ecohydrology and forest ecology, thus resulting in valuable but dispersed expertise. The main objective of this work is to introduce a comprehensive strategy aimed to study the implementation of AFM in Spain. As a first step, a network of 34 experimental sites managed by 14 different research groups is proposed and justified. As a second step, the most important AFM impacts on Mediterranean pines, as one of the most extended natural and planted forest types in Spain, are presented. Finally, open questions dealing with key aspects when attempting to implement an AFM framework are discussed. This study is expected to contribute to better outlining the procedures and steps needed to implement regional frameworks for AFM.