Banco de semillas germinable en la franja terrestre de dos humedales urbanos
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Universidad Distrital Francisco José de Caldas
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En los humedales Tibanica y La Vaca, ubicados en la ciudad de Bogotá (Colombia), se caracterizó el banco de semillas germinable (BSG) en la franja terrestre con el fin de establecer las implicaciones que puede tener en su recuperación. En cada humedal se definieron 15 parcelas de 4 m2 donde se recolectaron muestras de suelo a diferentes profundidades (0-10 cm, 10-20 cm y 20-30 cm), a partir de las cuales se realizó el conteo e identificación de las semillas germinadas durante 4 meses. Se registraron en total 960 semillas germinadas de 22 especies y 14 familias. La densidad total fue de 1445 semillas.m-2 en Tibanica y 2086 semillas.m-2 en La Vaca. El BSG estuvo compuesto por especies herbáceas en su mayoría naturalizadas y adventicias, en las que predominan la dispersión de semillas anemócora y el ciclo de vida anual. La recuperación de estos humedales a través del banco de semillas es limitado, por lo que se requiere combinar estrategias que superen la barrera que impone el pastizal dominado por Pennisetum clandestinum, así como el enriquecimiento con semillas e individuos de especies propias del ecosistema.
In Tibanica and La Vaca wetlands located in Bogota (Colombia), the germinable seed bank (GSB) of the terrestrial environment was characterized in order to establish the implications that may have in the recuperation of these ecosystems. In each wetland defined 15 plots of 4 m2, which were collected samples of soil at different depths (0-10, 10-20 and 20-30 cm), from which was made the counting and the identification of germinated seeds, for 4 months. The record were 960 germinated seeds of 22 species in 14 families. The total density was 1445 seeds.m-2 in Tibanica and 2086 seeds.m-2 in La Vaca. In the GSB, most of the species were herbaceous naturalized and adventitious, in which the dispersion of seeds and the annual life cycle The restoration of these wetlands through the seed bank is limited, it should be considered use strategies that exceed the barrier imposed by the grassland dominated by Pennisetum clandestinum and enrichment with seeds and individuals of native species.
In Tibanica and La Vaca wetlands located in Bogota (Colombia), the germinable seed bank (GSB) of the terrestrial environment was characterized in order to establish the implications that may have in the recuperation of these ecosystems. In each wetland defined 15 plots of 4 m2, which were collected samples of soil at different depths (0-10, 10-20 and 20-30 cm), from which was made the counting and the identification of germinated seeds, for 4 months. The record were 960 germinated seeds of 22 species in 14 families. The total density was 1445 seeds.m-2 in Tibanica and 2086 seeds.m-2 in La Vaca. In the GSB, most of the species were herbaceous naturalized and adventitious, in which the dispersion of seeds and the annual life cycle The restoration of these wetlands through the seed bank is limited, it should be considered use strategies that exceed the barrier imposed by the grassland dominated by Pennisetum clandestinum and enrichment with seeds and individuals of native species.
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seed bank, Bogotá, Tibanica wetland, ecological restoration, Bogotá, humedal Tibanica, humedal La Vaca, banco de semillas, restauración ecológica