author = "Rey, Pedro J."

Encontrado 46 documentos, página mostrada 3 de 5

Geographical variation in diaspore traits of an ant-dispersed plant (Helleborus foetidus): are ant community composition and diaspore traits correlated?

Description: 1 We explored geographical variation in the interaction between the elaiosome-bearing seeds of Helleborus foetidus and ant dispersers. We looked for correlation across nine Iberian localities, between diaspore traits and structural and functional characteristics of ant communities. 2 Mean diaspore...
Language(s): Inglés

Phylogenetic signatures of facilitation and competition in successional communities

Description: 10 páginas, 5 figuras, 1 tabla. , 1. The balance between facilitation and competition through time is at the core of models for successional dynamics. However, since the 1980s, the studies of facilitation have shifted away from successional processes. In a return to the traditional roots of the study o...
Language(s): Inglés

Geographic variation in the adaptive landscape for seed size at dispersal in the myrmecochorous Helleborus foetidus

Description: Literature on seed dispersal mutualisms suggests that plant populations should hardly adapt to their current dispersers. We address the predictions that selection pressures exerted by ants on dispersal-related diaspore traits of the ant-dispersed Helleborus foetidus are highly variable in space, and...
Language(s): Inglés

Extended phylogeny of Aquilegia: the biogeographical and ecological patterns of two simultaneous but contrasting radiations

Description: Studies of the North American columbines (Aquilegia, Ranunculaceae) have supported the view that adaptive radiations in animal-pollinated plants proceed through pollinator specialisation and floral differentiation. However, although the diversity of pollinators and floral morphology is much lower in...
Language(s): Inglés

Geographical variation in autonomous self-polliantion levels unrelated to pollnator service im Jelleborus foetidus (Ranunculaceae)

Description: Autonomous self-pollination may be considered as a mechanism enhancing plant reproductive success when plant access to pollen sources may limit seed production. We have studied the relationship between geographical patterns of variation in pollinator service to Helleborus foetidus and self-pollinati...
Language(s): Inglés

Plant Traits, Environmental Factors, and Pollinator Visitation in Winter-flowering Helleborus foetidus (Ranunculaceae

Description: • Background and Aims This study examined the effect of plant traits and environmental factors on pollinator visitation in the winter-flowering Helleborus foetidus (Ranunculaceae) in three distant regions in the Iberian Peninsula. • Methods Geographical variation in floral visitor assemblage, plant ...
Language(s): Inglés

Phylogenetic signatures of facilitation and competition in successional communities

Description: 10 páginas, 5 figuras, 1 tabla. , 1. The balance between facilitation and competition through time is at the core of models for successional dynamics. However, since the 1980s, the studies of facilitation have shifted away from successional processes. In a return to the traditional roots of the study o...
Language(s): Inglés

Geographic variation in the adaptive landscape for seed size at dispersal in the myrmecochorous Helleborus foetidus

Description: Literature on seed dispersal mutualisms suggests that plant populations should hardly adapt to their current dispersers. We address the predictions that selection pressures exerted by ants on dispersal-related diaspore traits of the ant-dispersed Helleborus foetidus are highly variable in space, and...
Language(s): Inglés

Extended phylogeny of Aquilegia: the biogeographical and ecological patterns of two simultaneous but contrasting radiations

Description: Studies of the North American columbines (Aquilegia, Ranunculaceae) have supported the view that adaptive radiations in animal-pollinated plants proceed through pollinator specialisation and floral differentiation. However, although the diversity of pollinators and floral morphology is much lower in...
Language(s): Inglés

Plant Traits, Environmental Factors, and Pollinator Visitation in Winter-flowering Helleborus foetidus (Ranunculaceae

Description: • Background and Aims This study examined the effect of plant traits and environmental factors on pollinator visitation in the winter-flowering Helleborus foetidus (Ranunculaceae) in three distant regions in the Iberian Peninsula. • Methods Geographical variation in floral visitor assemblage, plant ...
Language(s): Inglés

Encontrado 46 documentos, página mostrada 3 de 5

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