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Determinants of functional connectivity of holm oak woodlands: Fragment size and mouse foraging behavior

T. Morán‐López,J. J. Robledo-Arnuncio,M. Díaz,J. Morales,Ana Lázaro-Nogal,Z. Lorenzo,F. Valladares

Published 2016 in Forest Ecology and Management

ABSTRACT

Abstract Demographic and genetic connectivity of fragmented plant populations will depend on effective propagule flow across the landscape. We analyze functional connectivity in a holm oak ( Quercus ilex) fragmented landscape by considering three important stages driving recruitment: effective pollination, acorn production and acorn dispersal. We used a network approach to (1) determine if pollen-mediated gene exchange across the landscape was spatially structured; (2) estimate the effects of limited acorn dispersal on functional connectivity; (3) identify which landscape traits could drive source–sink dynamics of gene flow. Although long distance dispersal was relatively frequent, most effective pollen flow occurred over short distances ( 10 ha) are the main pollen sources, while small ones (

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