author = "Alonso, Conchita"

Encontrado 76 documentos, página mostrada 5 de 8

A piece of the puzzle: a method for comparing pollination quality and quantity across multiple species and reproductive events

Description: • Understanding how pollination affects plant reproductive success and how changes in pollination service affect plant populations, communities and ecosystems is of increasing concern. Yet supplemental hand-pollination traditionally used to assess pollen limitation is prohibitive for large-scale c...
Language(s): Inglés

A high concentration of glucogallin, the common precursor of hydrolyzable tannins, does not deter herbivores

Description: The diversity of structures of plant phenolic compounds suggests that their interactions with insect herbivores may be compound specific. In this study, we modified the natural covariances observed in mature leaves of mountain birch, Betula pubescens ssp. czerepanovii (Orlova) Hämet-Ahti, by supplyi...
Language(s): Inglés

Disturbance-dependent spatial distribution of sexes in a gynodioecious understory shrub

Description: Several ecological conditions and processes occurring naturally in plant populations may lead to spatial aggregation of sexes within populations of sexually polymorphic species. In addition, ecological disturbances such as forest management or fire could also affect the spatial distribution of sexes...
Language(s): Inglés

Yponomeuta evonymellus outbreaks in southern Finland: Spatial synchrony but different local magnitudes

Description: Defoliations of Prunus padus by Yponomeuta evonymellus were monitored in two areas in southern Finland. During a long-term study (1980-1995) in the area with high peak defoliations, P. padus trees recorded two defoliation peaks, leading to complete defoliation of many trees. The negative relationshi...
Language(s): Inglés

Individual variation in size and fecundity is correlated with differences in global DNA cytosine methylation in the perennial herb Helleborus foetidus (Ranunculaceae)

Description: Premise of the study: Few studies have examined how epigenetic modifications of DNA may influence individual plant phenotypes and ecological processes in wild plant populations. We investigated natural variation in global DNA cytosine methylation and its phenotypic correlates in the perennial herb H...
Language(s): Inglés

Spatial and temporal distribution patterns of nectar-inhabiting yeasts: how different floral microenvironments arise in winter-blooming Helleborus foetidus

Description: Yeasts frequently colonise floral nectar, where they can reach high densities. Recent investigations have further shown that yeast metabolism alters nectar properties by decreasing its total sugar content, modifying sugar composition, or raising nectar local temperature. However, the distribution pa...
Language(s): Inglés

Herbivory at marginal populations: consequences for maternal fitness and vegetative differentiation

Description: Margins of distribution of plant species constitute natural areas where the impact of the antagonistic interactions is expected to be higher and where changes in the dynamics of plant-herbivore coevolution could promote intraspecific differentiation in (co)evolving plant traits. In the present study...
Language(s): Inglés

Encontrado 76 documentos, página mostrada 5 de 8

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