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• W2068846907 abstract "For many tropical raptors, studies of population density and habitat use are still lacking. We used radio-tracking to study population density, home-range size, and habitat use of the Formosan Crested Serpent-Eagle (Spilornis cheela hoya) in Kenting National Park, southern Taiwan, during 1995–1997 and 1998–2007. Over two years, we documented a minimum population density of 2.69 individuals/km2, which is one of the highest ever reported. Home ranges calculated using minimum convex polygons and 95% fixed kernel areas averaged 12.34 km2 and 2.86 km2 (n = 18), respectively. Core areas represented by the 50% fixed kernel areas averaged 0.41 km2. We used distance-based analysis and compositional analysis to compare habitat use within the entire study area and the home ranges. Both methods indicated the overwhelming use (>90%) of somewhat degraded and semi-open mixed forests, followed by the use of Acacia confusa forests and grasslands to a much lesser degree. Habitat use was nonrandom both within the study area and the home range, as mixed forests covered only 24.4% of the study area. Many perch sites were near the primary monsoon forest, which was, however, almost never used for hunting. As many other species of serpent-eagles are threatened by habitat loss and human persecution, our study provides valuable information for their future monitoring and management.Todavía faltan estudios de densidad poblacional y uso de hábitat para muchas rapaces tropicales. Utilizamos radio transmisores para estudiar la densidad poblacional, el tamaño del ámbito de hogar y el uso de hábitat de Spilornis cheela hoya en el Parque Nacional Kenting, sur de Taiwán, durante 1995–1997 y 1998–2007. A lo largo de dos años documentamos una densidad poblacional mínima de 2.69 individuos/km2, la cual es una de las más altas jamás reportadas. Los ámbitos de hogar calculados utilizando polígonos convexos mínimos y las áreas de kernel fijo de 95% promediaron 12.34 km2 y 2.86 km2 (n = 18), respectivamente. Las áreas núcleo representadas por el 50% de las áreas de kernel fijo promediaron 0.41 km2. Utilizamos análisis basados en las distancias y análisis composicionales para comparar el uso del hábitat dentro de toda el área de estudio y de los ámbitos de hogar. Ambos métodos indicaron el abrumador uso (>90%) de los bosques mixtos algo degradados y semi-abiertos, seguidos en un grado mucho menor por el uso de bosques de Acacia confusa y pastizales. El uso del hábitat no fue al azar tanto dentro del área de estudio como en el ámbito de hogar, a la vez que los bosques mixtos cubrieron sólo el 24.4% del área de estudio. Muchos sitios de percha se ubicaron cerca del bosque monzónico primario, el cual sin embargo, nunca fue utilizado para cazar. Debido a que muchas especies de Spilornis están amenazadas por pérdida de hábitat y persecución humana, nuestro estudio provee información valiosa para su futuro manejo y monitoreo." @default.
• W2068846907 created "2016-06-24" @default.
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• W2068846907 date "2014-09-01" @default.
• W2068846907 modified "2023-09-26" @default.
• W2068846907 title "Population Density, Home Range, and Habitat Use of Crested Serpent-Eagles (<i>Spilornis cheela hoya</i>) in Southern Taiwan: Using Distance-Based Analysis and Compositional Analysis at Different Spatial Scales" @default.
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• W2068846907 doi "https://doi.org/10.3356/jrr-13-36.1" @default.
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