Influencia del tipo de cobertura sobre la ocupación y detectabilidad de tres especies de aves en áreas verdes de la ciudad de Bogotá, Colombia
Fecha
2025-01-22
Autores
Rangel Molano, Carolina
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Universidad Nacional, Costa Rica
Resumen
La rápida urbanización registrada a escala global está transformando paisajes naturales y planteando desafíos críticos para los ecosistemas y su biodiversidad, particularmente en regiones megadiversas como el Neotrópico. Este estudio investiga patrones de ocupación y la probabilidad de detección de tres especies de aves, Colibri coruscans, Thraupis episcopus y Turdus fuscater, en 15 áreas de la ciudad de Bogotá, Colombia, así como la influencia que sus coberturas del suelo pueden estar teniendo en estos parámetros. Para tal fin, se emplearon datos de conteos de aves recopilados en Conteos Navideños de Aves (CBC) realizados en la ciudad entre 2015 y 2018, los cuales fueron analizados mediante modelos de ocupación de una sola estanción. Los resultados indican que el aumento de áreas construidas impacta negativamente la ocupación de C. coruscans y T. episcopus, mientras que T. fuscater demostró ser altamente adaptable, con una probabilidad de ocupación del 99.9% en todos los sitios estudiados. Este hallazgo resalta la sensibilidad de T. episcopus a la fragmentación del hábitat, en contraste con la capacidad de C. coruscans para aprovechar coberturas con vegetación circundante en entornos urbanos.
Rapid urbanization on a global scale is transforming natural landscapes and posing critical challenges to ecosystems and their biodiversity, particularly in megadiverse regions such as the Neotropics. This study investigates patterns of occupancy and the probability of detection of three bird species, Colibri coruscans, Thraupis episcopus and Turdus fuscater, in 15 areas of the city of Bogotá, Colombia, as well as the influence that their land cover may be having on these parameters. To this end, data from bird counts collected in Christmas Bird Counts (CBC) conducted in the city between 2015 and 2018 were used, which were analyzed using single-stand occupancy models. Results indicate that increasing built-up areas negatively impacts C. coruscans and T. episcopus occupancy, while T. fuscater proved to be highly adaptable, with a 99.9% occupancy probability across all sites studied. This finding highlights the sensitivity of T. episcopus to habitat fragmentation, in contrast to the ability of C. coruscans to take advantage of surrounding vegetated cover in urban environments.
Rapid urbanization on a global scale is transforming natural landscapes and posing critical challenges to ecosystems and their biodiversity, particularly in megadiverse regions such as the Neotropics. This study investigates patterns of occupancy and the probability of detection of three bird species, Colibri coruscans, Thraupis episcopus and Turdus fuscater, in 15 areas of the city of Bogotá, Colombia, as well as the influence that their land cover may be having on these parameters. To this end, data from bird counts collected in Christmas Bird Counts (CBC) conducted in the city between 2015 and 2018 were used, which were analyzed using single-stand occupancy models. Results indicate that increasing built-up areas negatively impacts C. coruscans and T. episcopus occupancy, while T. fuscater proved to be highly adaptable, with a 99.9% occupancy probability across all sites studied. This finding highlights the sensitivity of T. episcopus to habitat fragmentation, in contrast to the ability of C. coruscans to take advantage of surrounding vegetated cover in urban environments.
Descripción
Palabras clave
AVES, BOGOTA, COLOMBIA, ESPECIES, URBANIZACIÓN, SPECIES, BIRDS, URBANIZATION