Abstract

CANTILLO HIGUERA, Edgard E  and  GRACIA CUELLAR, Melisa. Diversity and floristic characterization of the natural vegetation of three sites in the eastern hills of Bogota, D. C. Colomb. for. [online]. 2013, vol.16, n.2, pp.228-256. ISSN 0120-0739.

ABSTRACT Remnants of vegetation in the eastern hills of Bogotá (Parque Nacional Enrique Olaya Herrera, Quebrada La Vieja and Agroparque Los Soches) were floristically characterized by preferentially sampling twenty surveys of 0.07 ha distributed at altitudes between 2730 m and 3170 m. According to the Caldas-Lang classification the study area has a semi-wet cold climate, and according to the Holdridge system it corresponds to lower montane moist forest. We classified seven phytosociological units, dominated by Chusqueo scandentis - Weinmanietalia tomentosae vegetation, four units correspond to recovering forests of a Macleanio rupestris -Weinmanion tomentosae vegetation alliance, and another that corresponds to the Piperi bogotensis -Miconietum squamulosae type. The greatest diversity was found in the National Park with 48 families, 78 genera and 101 species, followed by Quebrada La Vieja with 44 families, 69 genera and 87 species, and finally Agroparque Los Soches with 40 families 63 genera and 78 species. We highlight the presence of ecologically important species such as Dicksonia sellowiana and Dysopsis paucidentata. Shannon -Weaver index values range between 3.14 and 3.99 and the average for the six vegetation types was 3.61. Vegetation units had very similar values, but the Ocotea sericea-Weinmania tomentosa and Oreopanax floribundum-Axinaea macrophylla communities had the lowest.

Keywords : Bogotá; Colombia; cerros orientales; diversity; floristic composition; vegetation.

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