author = "Rey, Pedro J."

Encontrado 46 documentos, página mostrada 2 de 5

Pre- and post-germination determinants of spatial variation in recruitment in the perennial herb Helleborus foetidus L. (Ranunculaceae)

Description: 1 Recruitment in plant populations is a multiphase sequential process. An integrated view of the relationships between the stages and processes involved is therefore needed, but few studies have analysed the direct and indirect effects concerned. We propose a causal model of these relationships a...
Language(s): Inglés

Influence of elaiosome on postdispersal dynamics of an ant-dispersed plant

Description: Specialized myrmecochorous plants bear an elaiosome attached to the seed. Ants benefit from food provided by this appendage and plants get their seeds eventually dispersed. Aside from the benefits conferred by seed dispersal, we hypothesize that the influence of the elaiosome might extend to late...
Language(s): Inglés

Regional and local variation in seedling emergence, mortality and recruitment of a perennial herb in Mediterranean mountain habitats

Description: Spatial patterns of seedling regener- ation of woody Mediterranean plants are widely documented, with seedlings and juve- niles growing almost exclusively under shrub and tree canopy. Neighbourhood habitat ame- lioration and consequent facilitative effects on r...
Language(s): Inglés

Fruit losses and fruit removal in Olea europaea var. sylvestris Brot. (Oleaceae) Pérdidas de fruto y movilización de semillas en Olea europaea var. sylvestris Brot. (Oleaceae)

Description: We analyzed several aspects of the reproductive biology of wild olive (Olea europaea var. sylvestris. Brot.) related to seed dispersal. The importance of several fruit fates (the way and condition in which fruits leave the tree) is considered in two different habitats, one of which was surveyed in t...
Language(s): Inglés

Negative evidence of local adaptation to the establishment conditions in a perennial herb

Description: The differential adaptation of populations of the same species to their local environmental conditions through divergent selection, known as local adaptation, is a key step in the process of diversifica- tion of species. Here, we explore the local adaptation of the perennial mountain herb Helleborus...
Language(s): Inglés

Intra-population comparison of vegetative and floral trait

Description: 12 páginas, 5 tablas. , Measuring heritable genetic variation is important for understanding patterns of trait evolution in wild populations, and yet studies of quantitative genetic parameters estimated directly in the field are limited by logistic constraints, such as the difficulties of inferring rel...
Language(s): Inglés

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

Intra-population comparison of vegetative and floral trait heritabilities estimated from molecular markers in wild Aquilegia populations

Description: Measuring heritable genetic variation is important for understanding patterns of trait evolution in wild populations, and yet studies of quantitative genetic parameters estimated directly in the field are limited by logistic constraints, such as the difficulties of inferring relatedness among indivi...
Language(s): Inglés

Negative evidence of local adaptation to the establishment conditions in a perennial herb

Description: The differential adaptation of populations of the same species to their local environmental conditions through divergent selection, known as local adaptation, is a key step in the process of diversifica- tion of species. Here, we explore the local adaptation of the perennial mountain herb Helleborus...
Language(s): Inglés

Intra-population comparison of vegetative and floral trait

Description: 12 páginas, 5 tablas. , Measuring heritable genetic variation is important for understanding patterns of trait evolution in wild populations, and yet studies of quantitative genetic parameters estimated directly in the field are limited by logistic constraints, such as the difficulties of inferring rel...
Language(s): Inglés

Encontrado 46 documentos, página mostrada 2 de 5

Uso de cookies: Este sitio web utiliza cookies propias y de terceros para dar un mejor servicio. Si continúa navegando se considera que acepta su uso. OKMás información