In this paper, I analyse the interaction between the holm-oak Quercus ilex, and one of its main dispersers, the European jay Garrulus glandarius, in an heterogeneous Mediterranean landscape. I quantify the spatial dispersal pattern of the seed shadow at two spatial scales, landscape (among patches) and microhabitat (within patches), by directly tracking the movement of seeds. Two main traits of...

Many forests of eastern North American are undergoing a species composition shift in which maples (Acer spp.) are increasingly important while oak (Quercus spp.) regeneration and recruitment has become increasingly scarce. This dynamic in species composition occurs across a large and geographically complex region. The elimination of fire has been postulated as the driver of this dynamic; howeve...

Masting is a population-level reproductive strategy, where individuals synchronize large but intermittent seed production. Despite the high degree of synchrony at population level, there can be considerable variation in reproduction among (intraspecific variation). Here, we use 18 years acorn production data from individual chestnut oak and black control thinned stands, to understand what facto...

Abstract Seed hoarding by granivorous animals requires cache-protection strategies which allow to protect hoarded seeds against pilferage. This study reports the first case of acorn in tree cavities Eurasian Jays ( Garrulus glandarius ). Out 116 removed acorns both pedunculate oak Quercus robur ) and Northern red Q. rubra ), we localized 14 consumed 102 stored acorns. Five experimental (4.9% ac...

Despite the pervasiveness of spatial synchrony of population fluctuations in virtually every taxon, it remains difficult to disentangle its underlying mechanisms, such as environmental perturbations and dispersal. We used multiple regression of distance matrices (MRMs) to statistically partition the importance of several factors potentially synchronizing the dynamics of the gypsy moth, an invas...

Cocoa powder is a basic ingredient in the manufacture of chocolate, one most appreciated sweet products world for its sensory and nutritional properties. Furthermore, it displays central nervous system stimulant effect. This study aimed to investigate acorn-derived as an alternative cocoa powder, order obtain chocolate that does not contain stimulants system. Both technological process acorns r...