Resumo

MORENO BETANCUR, Deisy Johana  e  CUARTAS HERNANDEZ, Sandra Eugenia. Survival and Growth of Tree Seedlings from Three species in Degraded Andean Mountain Forest for Cattle Grazing in Colombia. Acta biol.Colomb. [online]. 2015, vol.20, n.2, pp.85-100. ISSN 0120-548X.  https://doi.org/10.15446/abc.v20n2.46057.

Mountain forest landscapes of the central region of Antioquia department have been largely transformed into pastures; therefore, ecological restoration must be included as a primordial strategy. The aim of this study was the selection of three tree species that help to improve natural regeneration of mountain forest and to evaluate the effect of different sowing strategies on the seedling`s establishment. We assessed the effect of fertilization type, combination of species, light availability and monthly precipitation on seedling survival and growth. Myrsine coriacea, Quercus humboldtii, and Weinmannia pubescens were selected on the basis of high importance value index and high seed availability. Survival of the three species was higher when seedlings were fertilized with organic matter. Also, growth was higher for W. pubescens. The combination of species had no effect on the growth rate of the three species, but it affected negatively the survival of Q. humboldtii and W. pubescens growing with M. coriacea. Survival was higher for seedlings of W. pubescens and M. coriacea out of the sun at some moment during the day. Also, survival diminished during drought period. Successful establishment of Q. humboldtii and tolerance of W. pubescens to frost and regrowth after freeze period and seed dispersal of M. coriacea by birds constitute a set of characteristics that make of these species promissory in the ecological restoration process in degraded mountain forest areas.

Palavras-chave : ecological restoration; importance value index; mixed-species; organic fertilization.

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