Evaluación de zonas de riesgo a invasión por 10 especies de plantas exóticas en ecuador continental y su coincidencia con las áreas de distribución de tres especies endémicas

The invasive alien species (IAS) represent one of the environmental problems with the greatest impact on biodiversity. The objective of this work was to evaluate the zones of risk of invasion of exotic species and their coincidence with the distribution areas of endemic species by modeling 10 invasive plant species Ageratum conyzoides L, Amaranthus spinosus L, Pennisetum purpureum Schumach, Sorghum Halepense (L.) Pers, Silene gallica L, Panicum maximun Jacq, Echinochloa colona L, Eleusine indica (L) Gaertn, Melia azedarach L and Rumex crispus L and three species of endemic plants Bejaria subsessilis, Cotopaxia asplundii and Passiflora andina. For the modeling of the ecological niche of the IAS, records of the presence of updated databases (GBIF and TROPICOS) were collected, the 19 climatic variables (WorldClim 2.0) and vegetation (COPERNICUS) were used. The potential geographic distribution of the IAS in continental Ecuador was obtained for both the native and invaded area and transferred to Ecuador and for the model calibrated only for Ecuador. The endemic species were modeled following the same criteria as the IAS. The maximum entropy algorithm Maxent and the spatial and superposition analysis of maps between endemics and IAS were used, the same ones that were performed in ArcGIS v10.1. According to the results obtained for the model for the native area and invaded and transferred to Ecuador for Bejaria subsessilis, Cotopaxia asplundii and Passiflora andina the IAS that is affecting mainly are Silene gallica L and Rumex crispus L. In the case of the ecological niche model calibrated for Ecuador it was obtained that for Bejaria subsessilis the IAS that would occupy a large part of its territory are Amaranthus spinosus L, Pennisetum purpureum Schumach and Eleusine indica (L.) Gaertn. For Cotopaxia asplundii are Pennisetum purpureum Schumach and Melia azedarach L. And for Passiflora andina are Amaranthus spinosus L and Melia azedarach L. Keywords: ecological niche modeling, invasive alien species, endemic species, Ecuador, biological invasions

• Autor principal: Castillo Macías, Mayely Julissa (author)
• Formato: bachelorThesis
• Lenguaje: spa
• Publicado: 2018
• Materias: Zonas de riesgo; Especies de plantas exóticas; Especies endémicas
• Acceso en línea: http://repositorio.uteq.edu.ec/handle/43000/3954