Ignacio M. Pérez-Ramos

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Mast seeding, the synchronous, highly variable seed production among years, is very common in tree species, but there is no consensus about its main causes and the main environmental factors affecting it. In this study, we first analyze a long-term data set on reproductive and vegetative growth of Quercus ilex in a mediterranean woodland in order to(More)
Understanding seedling performance across resource gradients is crucial for defining the regeneration niche of plant species under current environmental conditions and for predicting potential changes under a global change scenario. A 2-year field experiment was conducted to determine how seedling survival and growth of two evergreen and two deciduous(More)
1. Plant species composition and cornmunity functional structure (Le. trait composition at the COffimunity level) result fram a hierarchy of envÍronmental filters that constrain which species and traits tend to be dominant in a given habitat. 2. We quantified variation in cornmunity functional structure along natural gradients of soíl resources using(More)
Question: What is the relative importance of seed mass and abiotic factors in species-specific seedling growth and morphology during the first and the second growing season? How do oak species respond along gradients of these factors? Location: Mediterranean oak forest in southern Spain. Methods: We analysed seedling growth components and morphology of(More)
The process of seed dispersal of many animal-dispersed plants is frequently mediated by a small set of biotic agents. However, the contribution that each of these dispersers makes to the overall recruitment may differ largely, with important ecological and management implications for the population viability and dynamics of the species implied in these(More)
Recent studies have shown that accounting for intraspecific trait variation (ITV) may better address major questions in community ecology. However, a general picture of the relative extent of ITV compared to interspecific trait variation in plant communities is still missing. Here, we conducted a meta-analysis of the relative extent of ITV within and among(More)
Tree species can differ in their responses to resource availability during the critical phase of establishment, which could influence forest dynamics. In Mediterranean forests, most of the attention has focused on the effects of shade and summer drought on seedling survival, but little is known about the effect of autumn to spring rains on earlier stages of(More)
I. M. Pérez-Ramos (ignacio.perez-ramos@cefe.cnrs.fr), I. R. Urbieta, and T. Marañón, IRNAS, CSIC, P.O. Box 1052, ES-41080 Sevilla, Spain. Present address for IMPR: Centre d’Ecologie Fonctionnelle et Evolutive, CNRS, 1919 Route de Mende, FR-34293 Montpellier 5, France. M. A. Zavala and present address for IRU: Depto de Ecologı́a, Edificio de Ciencias, Univ.(More)
Soil factors are driving forces that influence spatial distribution and functional traits of plant species. We test whether two anchor morphological traits—leaf mass per area (LMA) and leaf dry matter content (LDMC)—are significantly related to a broad range of leaf nutrient concentrations in Mediterranean woody plant species. We also explore the main(More)
Spatial heterogeneity of abiotic factors influences the structure and function of forests and must be taken into account for their conservation and sustainable management. In this study, we evaluate the heterogeneity of abiotic environmental variables in managed cork oak (Quercus suber L.) forests in southern Spain at patch, site and regional scales. The(More)