Please use this identifier to cite or link to this item: http://hdl.handle.net/10609/145889
Title: Modelización espacial de la distribución de los anfibios ibéricos a partir de variables ambientales
Author: Herrero Esteban, Elena
Tutor: Fernández Martínez, Daniel  
Others: Royo, Carles  
Abstract: Amphibians are experimenting a large population decline worldwide, having the highest percentage of extinctions per year in the last century, which makes them the most threatened group in the animal kingdom according to the International Union for Conservation of Nature. Spain is a biodiversity hotspot, where 35% of amphibian european species are represented, in addition to having several Iberian endemisms. Evaluating the importance of biotic, abiotic and anthropic variables in the richness of amphibians in Spain and the Balearic Islands is key to being able to guide Management and Conservation plans in the current global change scenario. In this paper, Principal Component Analysis and Generalized Linear Models are used to generate a predictive model that, through spatial geoprocessing tools, is represented in a Suitability Map of the richness of amphibians in the territory. Random Forest is the most appropriate Machine Learning technique to analyze the relationship of variables with species richness. The climatic variables are relevant for the richness of amphibians, with precipitation being the most significant (BIO15, BIO19, BIO16, BIO13). The northern and western areas within the Iberian Peninsula are the most suitable areas for the richness of amphibians. Amphibian richness can be used as a reliable bioindicator parameter in the context of climate change. The combination of statistics, bioinformatics and geoprocessing tools achieves a complete toolbox for species distribution studies and their future distribution due to environmental changes.
Keywords: supervised learning
random forest
modelling
amphibians
climate variables
Document type: info:eu-repo/semantics/masterThesis
Issue Date: 2-Jun-2022
Publication license: http://creativecommons.org/licenses/by-nc-nd/3.0/es/  
Appears in Collections:Trabajos finales de carrera, trabajos de investigación, etc.

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