Local knowledge and birds community study as tools for the identification of natives trees species important for the conservation in cattle systems raisers of the oriental plains of Colombia (San Mart?n, Meta)

Tesis (M. Sc) -- CATIE, Turialba (Costa Rica), 2006El presente estudio fue realizado en el municipio de San Mart?n, Meta (Orinoquia Colombiana). Se realizaron entrevistas a los ganaderos de la regi?n con el fin de identificar especies arb?reas nativas con sus diferentes usos y nivel de presencia en la zona (conocimiento local). Se identificaron cuatro especies. Sobre estas especies se realiz? una caracterizaci?n de la comunidad de aves asociadas a ellas, con el fin de identificar cu?l o cu?les mantienen mayor diversidad de especies. Finalmente, se presentaron propuestas para la implementaci?n ?rboles en potreros, utilizando la siembra y la regeneraci?n natural con costos estimados de inversi?n. Las estrategias de conservaci?n propuestas a trav?s del establecimiento de las especies arb?reas trabajadas resultaron altamente costosas. The present study was developed in the municipality of San Martin, Meta (Colombian Orinoquia). Interviews were carried out to some landowners of the region in order to identify native trees species with their different uses and level of presence in the zone (local knowledge). Four species were identifies. Based on these species a characterization of the associated bird's community to them, in order to identify which of these species were being utilized for the birds in greater proportion, and, which of them maintain greater species diversity. Finally, proposals for the implementation trees in pastures were presented, utilizing the sowing and the natural regeneration with costs reckoned of investment. The conservation strategies proposed through the establishment of the tree species in pastures turned out to be very expensive