Análisis poblacional de Paepalanthus Chiquitensis asociado a diferentes condiciones de uso del suelo en la Serranía de La Lindosa (San José del Guaviare, Colombia)

Abstract

In the Serranía de la Lindosa there is a great wealth of unique biological expressions of rupicolous, cultural and aquifer ecosystems that attract people from all over the world to develop tourism activities that, added to the local livestock economy, has generated pressure on the natural populations of emblematic species such as the Flor del Guaviare (paepalanthus chiquitensis), since human disturbance affects the dynamics of plant regeneration, even when it is difficult to perceive. For this reason, it was evaluated whether the abundance and spatial distribution by age categories as indicators of the population structure of Flor del Guaviare vary across three zones with contrasting land uses (Natural zone, Tourism zone and Livestock zone). For this, three plots per area of ​​20m x 10m were made where all the individuals of P. Chiquitensis were registered, these were marked, mapped and measured according to their state of development. The abundance was analyzed with the help of parametric and non-parametric tests, likewise the abundance of the Guaviare flower was evaluated with the lambda difference of the Poisson distribution. On the other hand, the spatial distribution was analyzed with Ripley's K area-distance function for all individuals in each plot and the Clark and Evans closest neighbor index applied to the different age categories of seedlings, juveniles and adults. The results show that the abundance decreases as the transformation of the habitat from natural areas to tourism areas and livestock areas increases, in the same way the results show that the aggregation of the populations of the Guaviare flower increases as the intervention in it increases. gradient.