Estructura y Composición de un Ensamblaje de Aves en el “Bosque de los Guayupes", Vertiente del Río Guayuriba‚ Piedemonte LLanero(Acacías-Meta)
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Resumen
The piedmont plains is a region of vital importance to the country's biodiversity, because it is the transition between the plains and the eastern Andes, and because it generates an altitudinal gradient with a range of environmental conditions that facilitate the diversification of species by the wide range of habitats. The piedmont plains has been described as a territory with a high biodiversity of birds they have been recorded at least 542 species, representing 28.34% of the 1912 species reported for Colombia (ProAves, 2014). This high diversity is attributed to the wide range of environmental conditions and high availability of niches, to which the avifauna present there has adapted closely, which in turn is susceptible to the different dynamics of land use as is the oil exploitation , large areas of crops, livestock, etc., the main economic activities in this area; these features together make up a landscape preserved to other heavily managed ecosystems, this explains the possible variations that can occur in biodiversity. Birds assemblies established under these conditions acquire a composition and structure depending on a gradient of conditions (Blake et al., 2000).
Birds have attributes that give great sensitivity to the supply of habitat resources, such as food availability, perch, sites or types of plants for nesting, among others, in many cases can be used as evidence of the quality a habitat and making evident processes of degeneration.
Forest of the Guayúpes, is set on the flank this of the Eastern Cordillera, from the foothills in Acacias, Meta, has a gradient conditions ranging from low-lying areas that are among the 981 meters to the highest at 2475 meters, likewise the landscape is characterized by areas with a strong anthropic intervention and other well preserved sectors. this research where the structure and composition of the assembly is analyzed for changes in diversity and anthropogenic influence on ecosystems present there is proposed. Sampling was carried out in 4 zones with different levels of human intervention, which in the floristic species present and their structural physiognomy is a contrasting base. The birds will be recorded by using mist nets and transect sighting, the data will be processed by analysis of dominance and equity, and change or replacement will be estimated in species composition between sampling points in the study area, diversity ß.