Uso del modelado de nicho ecológico para evaluar las afectaciones de la distribución potencial de especies exóticas invasoras sobre ecosistemas de Ecuador Continental, año 2018
In a balanced ecosystem, fauna and flora species are accustomed with each other, but this balance is menaced with exotic species introduction, with adverse consequences. Species of avena sativa, Bidens pilosa, Citrus medica, Columbia livia, Lithobates catesbeianus, Lolium multiflorum, Passer domesti...
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| Formato: | bachelorThesis |
| Idioma: | spa |
| Publicado em: |
2018
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| Assuntos: | |
| Acesso em linha: | http://repositorio.uteq.edu.ec/handle/43000/3172 |
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Adicionar Tag | Resumo: | In a balanced ecosystem, fauna and flora species are accustomed with each other, but this balance is menaced with exotic species introduction, with adverse consequences. Species of avena sativa, Bidens pilosa, Citrus medica, Columbia livia, Lithobates catesbeianus, Lolium multiflorum, Passer domesticus, Rattus norvegicus, Rubus niveus, and Sonchus asper, are considerated among the most harmful for their reproductive and alimentary characteristics according to the International Union for Conservation of Nature. These species have been introduced to Ecuador intentionally or unintentionally without noticing the harm they cause to native species, and the ecological, economic, and sanitary consequences. The use of ecological niche modeling of invasive alien species (IAS) is an important tool to predict potential invasions of these species. The object of this research was to evaluate the IAS’ potential affections in ecosystems of the Ecuador continental zone through de ecologycal niche modeling. MaxEnt was used as a modeling method; and the data of the native presence, and presence of the ten species and 19 bioclimatic variables, as information. Land use charts, protected areas, protectores forests, and importancy areas for the birds, were analized together with a IAS wealth chart, with SDMTool of ArcGis 10.1, obtaining potential geographic distribution maps, match of distribution of the species areas, and identification of the most danger zones. Lithobates catesbeianus, Citrus medica, Passer domesticus y Sonchus asper were the species with high index of adequation in the Andes mountain range. The IAS wealth chart identified the Sierra region with the most high invasion risk (Pichincha, Cotopai, Bolivar, and Loja) and in the Costa region; Santa Elena province, and a minor area in Manabi. Sangay National Park was considered as a protected area, as a protector forest, and as the most potential risk IBA for species invasion, and the native forest as the ground uses. |
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