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        • Venezuela
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        • Universidad de los Andes (Venezuela)
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        • Venezuela
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        • Universidad de los Andes (Venezuela)
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        Seed production and soil seed bank in three evergreen woody species from a neotropical savanna

        Registro en:
        T016300001778/0
        http://www.saber.ula.ve/handle/123456789/16889
        http://repositorioslatinoamericanos.uchile.cl/handle/2250/200999
        Autor
        Silva Armas, Juan F.
        Azócar, Aura
        García Nuñez, Carlos
        Institución
        • Universidad de los Andes (Venezuela)
        Resumen
        Artículo publicado en: Journal of Tropical Ecology (2001). Cambridge University Press.
         
        Seed production and soil seed bank in three evergreen woody species from a neotropical savanna (Azócar, Aura; García, Nuñez, Carlos and Silva, Juan F. ) Abstract Results of a 3-y study on the populations of three evergreen woody species (Byrsonima crassifolia, Palicourea rigida and Bowdichia virgilioides), from a regularly burnt savanna, in Venezuela, are reported. Tree density, size structure, fruitseed production per tree of different size classes and soil seed bank were estimated. Viable seed production was one order of magnitude higher in B. crassifolia, which was also the only species with a permanent soil seed bank. Seeds of B. virgilioides germinated readily after dispersal, whilst seeds of P. rigida showed an innate dormancy synchronously released after a year. Both of the latter species seemed to maximize the first growth season by germinating at the beginning of the favourable season. In B. crassifolia, germination proceeds with an early small burst of germination, possibly followed by a second peak at the beginning of the next rainy season and little or no germination thereafter. The results showed that despite the high .re frequency, the studied species produce a substantial number of viable propagules, and have the capacity to germinate in field conditions (readiness depending on the species). Sexual reproduction is expected, therefore, to play an important role, as suggested by their reproductive investment, in longterm population maintenance. Artículo publicado en: Journal of Tropical Ecology (2001). Cambridge University Press.
         
        juan_silva004@hotmail.com
         
        aazocar@ula.ve
         
        cgarcia@ula.ve
         
        Nivel monográfico
         
        Materias
        Instituto de Ciencias Ambientales y Ecológicas (ICAE)
        Facultad de Ciencias.
        Fire
        Fruit production
        Germination
        Population persistence
        Reproductive strategies
        Resprout
        Savanna trees
        Seed dispersal
        Artículos

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        Red de Repositorios Latinoamericanos
        + de 8.000.000 publicaciones disponibles
        500 instituciones participantes
        Dirección de Servicios de Información y Bibliotecas (SISIB)
        Universidad de Chile
        Ingreso Administradores
        Colecciones destacadas
        • Tesis latinoamericanas
        • Tesis argentinas
        • Tesis chilenas
        • Tesis peruanas
        Nuevas incorporaciones
        • Argentina
        • Brasil
        • Colombia
        • México
        Dirección de Servicios de Información y Bibliotecas (SISIB)
        Universidad de Chile
        Red de Repositorios Latinoamericanos | 2006-2018