Caracterización florística del bosque subandino y algunas áreas disturbadas en San Bernardo (Cundinamarca), Colombia

Abstract

A characterization of the vegetation in forest relicts, Eucalyptus globulus plantations, and grasslands in the municipality of San Bernardo was made with a preferential sampling. Plots were created according to type of land cover and stratum according to Moreno (2001) and Villareal et al . (2004). 31 species were recorded for the forest relict, seven in the E. globulus plantations, and 25 in the grassland areas. Greatest values of Shannon diversity were obtained for the forest relicts (2.97), followed by grasslands (2.40), and lastly the E. globulus plantations (1.15). In terms of Simpson dominance, the same pattern was found, since forest relicts had the highest value (0.93), followed by grasslands (0.83) and E. globulus plantations (0.56). Species with the highest values of IVI and IPF included Hedyosmum bonplandianum , Miconia theaezans , and Vismia guianensis in the forest relicts and E. globulus in its plantations. Similarly, some plant attributes that favor colonization and establishment were identified due to their possible implications on the restoration of the ecosystem. Anthropic activities such as agriculture, livestock, forest plantations, and fires, among others, have caused the loss of native vegetation and fragmented the ecosystem.