Abstract (en):
An alternative for conservation of floristic diversity of region is the ex situ conservation, which depends on various environmental factors such as physical and chemical water conditions, local climate and the selected propagation technique. The objective of this research was to assess propagation technique of best performance by species, and identify environmental factors that influence growth rates, and phenology of selected species. The relationship between growth of 25 species selected and abiotic factors were examined in a term of 23 months. We measured once a month the cover percentage, length, height and basal diameter. Also, we analyzed 12 physical and chemical variables of the water of lake, and daily weather variables. The variation of water levels was main limiting factor for conservation of species ex situ. The species Bidens laevis, Ludwigia hexapetala and Ludwigia peploides showed high rates of growth in contrast to the high mortality of Cotula coronopifolia and Hydrocotyle ranunculoides. The phenological stages of some species were associated with the local climate pattern. Results suggest that the successful establishment of aquatic plants is determined by physical and chemical quality of water, and selected technique. Each technique depends on hydraulic, which is affected by temporal and special variations.
Abstract (es):
La vegetación acuática, soporte de gran parte de la biodiversidad y funciones de los humedales, es afectada por la intervención antrópica que promueve la disminución de la riqueza de la población de macrófitas. Una alternativa para la conservación de la diversidad florística es la conservación ex situ que depende de varios factores. El objetivo de la presente investigación fue identificar la fenología de especies seleccionadas y los factores ambientales que influyen en su crecimiento en condiciones artificiales. Durante 23 meses se realizaron mediciones de cobertura, longitud, altura y diámetro basal a 25 especies, 12 variables fisicoquímicas y cuatro variables climáticas. Los resultados mostraron que la variación en los niveles de agua es uno de los factores abióticos limitantes para la conservación ex situ de especies y que influye tanto en la calidad físicoquímica del agua como en la técnica seleccionada. Se reportó un incremento en cobertura de las especies Bidens laevis, Ludwigia hexapetala y Ludwigia peploides, que contrastó con la alta mortalidad de las especies Cotula coronopifolia e Hydrocotyle ranunculoides. Así el establecimiento exitoso de una colección viva de plantas acuáticas depende de la dinámica hidráulica, que es afectada por variaciones temporales y espaciales en el cuerpo de agua.
Keywords:
Colección viva, Factores abióticos, Fenología, Macrófita, Tasas de crecimiento (es)
How to Cite
Camelo-Mendoza, L. M., Martínez-Peña, M. L., Ovalle-Serrano, H., & Jaimes, V. I. (2016). <em>Ex situ<em> conservation of aquatic plants of wetlands of the sabana de Bogotá. Biota Colombiana, 17(Supl. 1). https://doi.org/10.21068/C2016s01a01
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