SELECCIÓN DE HÁBITATS DE OXYURA LEUCOCEPHALA EN HUMEDALES DE ANDALUCÍA
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2019-03
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Jaén: Universidad de Jaén
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[ES] En este trabajo se estudia la selección de hábitat de la malvasía cabeciblanca (Oxyura leucocephala) durante los años 2003-2012 en 56 humedales andaluces. Se estudió la distribución y evolución de la población de malvasía en los humedales andaluces. En estos humedales se analizó la presencia de la malvasía y su posible relación con diferentes parámetros fisicoquímicos y parámetros morfométricos. Por otra parte se llevó a cabo un modelo de distribución potencial de la población de malvasía en el territorio usando un modelo probabilístico de Mahalanobis empleando variables ambientales. Los resultados concluyen que durante el período 2003-2012 existe un descenso en el número de malvasías. Esta especie se dispersa durante los meses de otoño e invierno, fruto de un aumento de hábitats disponibles. También demostraron una relación entre la presencia de malvasías y la profundidad del agua, conductividad y porcentaje de cobertura de macrófitos.
[EN] In this work it studies the habitat selection of the white-headed duck {Oxyura /eucocephala) during the years 2003 -2012 in 56 Andalusian wetlands. The distribution and evolution of the specie population was studied in the Andalusian wetlands. In these wetlands, the presence of Oxyura leucocephala and possible relationship with differents physicochemical parameters and morphometric parameters were analyzed. On the other hand, a model of potential distribution of the Oxyura leucocephala population in the territory was carried out using a probabilistic Mahalanobis model employing environmental variables. The results conclude that during the period 2003-2012 there was a decrease in the number of white-headed ducks. This specie disperses during the months of autumn and winter, result of an increase of available habitats. They also showed a relationship between the presence of the specie and depth of water, conductivity and percentage of macrophyte coverage.
[EN] In this work it studies the habitat selection of the white-headed duck {Oxyura /eucocephala) during the years 2003 -2012 in 56 Andalusian wetlands. The distribution and evolution of the specie population was studied in the Andalusian wetlands. In these wetlands, the presence of Oxyura leucocephala and possible relationship with differents physicochemical parameters and morphometric parameters were analyzed. On the other hand, a model of potential distribution of the Oxyura leucocephala population in the territory was carried out using a probabilistic Mahalanobis model employing environmental variables. The results conclude that during the period 2003-2012 there was a decrease in the number of white-headed ducks. This specie disperses during the months of autumn and winter, result of an increase of available habitats. They also showed a relationship between the presence of the specie and depth of water, conductivity and percentage of macrophyte coverage.