6 resultados para Rosa canina
em Universidad Politécnica de Madrid
Resumo:
Fleshy fruits fall on to the ground together with cleaned seeds previously ingested by primary dispersers, offering a wide range of fruits and seeds to the ground foragers. Although nutritional properties strongly differ between fruits and seeds, this different seed presentation (cleaned seeds versus seeds within the pulp) has not been addressed in seed removal studies. This study reports on the removal of fruits versus their seeds in five fleshy-fruited species in a temperate forest. We found that rodents removed most of the seeds and partially consumed most of the fruits, preferring seeds to fruits. Rodents bit the fruits to extract the seeds, leaving most of the pulp. We found a preference ranking for the seeds (Sorbus aucuparia>Ilex aquifolium>Sorbus aria>Rosa canina>Crataegus monogyna) but no preferences were found for the fruits, probably due to their similarities in pulp constituents. Seed and fruit choice were affected by chemical and physical properties and not by their size. The presence of alternative and preferred seeds (nuts) delayed the encounter of the fruits and seeds and diminished their removal rates. We found that higher rodent abundance is not necessarily associated with higher removal rates of fleshy fruits. Rodent abundance, fruit size and seed size are minor factors in the removal of fleshy fruits and their seeds. This study underlines that scatter-hoarding rodents are important removers of fleshy fruits and their seeds, producing a differential seed removal depending on the seed presentation (with or without pulp), the nutritional properties of the seeds (but not of the fruits) and the presence of alternative food
Resumo:
EL trabajo a exponer por medio de póster forma parte del Proyecto Fin de Carrera: “Productividad de rosa de Jamaica (hibiscus sabdariffa) en la cooperativa hibiscus (municipio de nandaime, nicaragua): seguimiento y apoyo técnico en su cultivo, secado y procesado”, realizado en Nicaragua desde julio de 2009 a enero de 2010 con el fin de dar seguimiento al proyecto de Fortalecimiento empresarial de las comunidades del municipio de Nandaime que “Ingenierías Sin Fronteras” realizó en años anteriores a través del proyecto de una Cooperativa agroindustrial, Hibiscus S.L. El proyecto consta de la descripción del punto de partida y del ciclo biológico de la rosa de Jamaica (es en este punto donde se centrará la exposición para el Congreso), del seguimiento del ciclo de cultivo de rosa de Jamaica de cada uno de los productores socios de la Cooperativa y del diseño de una secadora de cálices, que es la parte aprovechable del cultivo, para los productores de esta zona
Resumo:
Arquitectura española contemporánea. La moderna arquitectura del ladrillo y la Casa de ejercicios de Chamartín de la Rosa
Resumo:
Estudio preliminar de la edición facsímil del libro L'architettura romana, de Luigi Canina, de 1840. Serie : Fondo antiguo de la Escuela Técnica Superior de Arquitectura de Madrid ; 8
Resumo:
Estudio preliminar de la edición facsímil del libro L'architettura greca, de Luigi Canina, de 1834. Serie: Fondo antiguo de la Escuela Técnica Superior de Arquitectura de Madrid ; 5