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      ANÁLISIS COMPARATIVO DE LA LLUVIA DE SEMILLAS DE Gaiadendron punctatum (RUIZ & PAVÓN) G.DON. (LORANTHACEAE) Y Ternstroemia meridionalis MUTIS EX L.F. (THEACEAE) EN EL PARQUE NATURAL MUNICIPAL RANCHERÍA (BOYACÁ), COLOMBIA Translated title: Comparative Analysis of Seed Rain of Gaiadendron punctatum (Ruiz & Pavón) G. Don (Loranthaceae) y Ternstroemia meridionalis Mutis Ex L.F. (Theaceae) At Natural Municipal Park Rancheria (Boyacá), Colombia

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          Abstract

          Gaiadendron punctatum (Ruiz & Pavón) G. Don y Ternstroemia meridionalis Mutis ex L.f. son especies ornitócoras del bosque altoandino, la primera abundante en el parque natural municipal Ranchería, y la segunda rara localmente. Se evaluó la lluvia de semillas y la fenología de la fructificación de G. punctatum y T. meridionalis. El muestreo se realizó entre marzo y diciembre de 2010, período que incluye época seca y lluviosa. Se instalaron 8 trampas, con una superficie de recolección de 1 m2. La fructificación de las dos especies fue continua, con alto porcentaje de frutos inmaduros; la mayor fructificación se presentó en época lluviosa. Las dos especies presentaron lluvia de semillas durante todo el estudio, G. punctatum presentó lluvia de semillas más alta con un promedio de 169/m2, mientras que T. meridionalis presentó 50 semillas/m2. La mayor abundancia de semillas de G. punctatum se presentó en época seca, mientras que en T. meridionalis fue en época lluviosa. A pesar de la baja lluvia de semillas, T. meridionalis, mostró un porcentaje alto de semillas viables. G. punctatum presentó mayor presión de propágulos, lo que explicaría el alto número de individuos en el área. Aunque el número de semillas de T. meridionalis no es muy alto, representa un potencial para la prevalencia de esta especie y la necesidad de buscar los factores que impiden la persistencia de estos propágulos.

          Translated abstract

          Gaiadendron punctatum (Ruiz & Pavon) G. Don and Ternstroemia meridionalis Mutis ex L.f. are ornithochorous species of the high-Andean forest; the first is abundant at Natural Municipal Park Rancheria, and the second rare at local level. The seed rain and fruiting phenology of G. punctatum and T. meridionalis were evaluated. Records were kept between March and December of 2010. This period included dry and wet seasons. Eight traps with a recollection surface of 1 m2 were intalled. Fruiting of G. punctatum and T. meridionalis was continued with a high percentage of unripe fruits. The higher fruiting was shown in the wet season. Both species presented seed rain during all the study. G. punctatum had higher seed rain with an average of 169/m2; while T. meridionalis only 50 seeds/m2. Most abundance of G. punctatum's seeds was recorded in the dry season, while for T. meridionalis in wet season. In spite of low seed rain for T. meridionalis it showed a high percentage of viable seeds. G. punctatum presented more propagules that could explained the high number of individuals by area. Although the number of seeds of T. meridionalis is not very high, it represents a potential for prevalence of this specie and the need of looking for factors that to block the persistence of this propagules.

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          Spatial patterns of seed dispersal, their determinants and consequences for recruitment.

          Growing interest in spatial ecology is promoting new approaches to the study of seed dispersal, one of the key processes determining the spatial structure of plant populations. Seed-dispersion patterns vary among plant species, populations and individuals, at different distances from parents, different microsites and different times. Recent field studies have made progress in elucidating the mechanisms behind these patterns and the implications of these patterns for recruitment success. Together with the development and refinement of mathematical models, this promises a deeper, more mechanistic understanding of dispersal processes and their consequences.
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            The Phenology of Tropical Forests: Adaptive Significance and Consequences for Primary Consumers*

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              Are plant populations seed-limited? A review of seed sowing experiments

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                Author and article information

                Journal
                abc
                Acta Biológica Colombiana
                Acta biol.Colomb.
                Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Biología (Bogotá, Cundinamarca, Colombia )
                0120-548X
                April 2012
                : 17
                : 1
                : 159-172
                Affiliations
                [01] Tunja-Boyacá orgnameUniversidad Pedagógica y Tecnológica de Colombia Colombia
                Article
                S0120-548X2012000100012 S0120-548X(12)01700112
                a71cb2fb-e2e3-4cdd-8eca-595df5fc3c83

                This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

                History
                : 02 April 2011
                : 19 July 2011
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 57, Pages: 14
                Product

                SciELO Colombia

                Self URI: Texto completo solamente en formato PDF (ES)
                Categories
                Artículos

                Gaiadendron punctatum,bosque altoandino,lluvia de semillas,Ternstroemia meridionalis,high-Andean forest,seed rain

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