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      Efecto del ruido del tráfico vehicular en cantos de Hylophilus flavipes y Cyclarhis gujanensis Translated title: Effect of the Traffc Noise on the Songs of Hylophilus Flavipes and Cyclarhis gujanensis

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          Abstract

          La hipótesis de adaptación acústica ha justificado que la estructura del hábitat y la intervención antrópica son factores que influyen en la variación de las vocalizaciones de las aves. Este estudio estimó el efecto del ruido del tráfico vehicular sobre las vocalizaciones de Hylophilus flavipes y Cyclarhis gujanensis.Se efectuaron transectos paralelos a carreteras en dos localidades del bosque seco tropical del departamento del Tolima; se realizó la grabación de sus cantos y la medición de la intensidad de ruido emitido por los vehículos. Se encontró que H. flavipes y C. gujanensis emiten cantos con una frecuencia mínima mayor cuando se encuentran en lugares donde la intensidad del ruido está por encima de los 40 dB. Así mismo, H. flavipes genera cantos con una menor duración de notas y una mayor duración entre notas, y tiende a cantar con menor número de notas cuando se ubican cerca de la carretera. Además, la última nota de los cantos de C. gujanensis tiende a ser más duradera bajo estas condiciones. Este estudio permitió determinar una variación en las vocalizaciones de las dos especies ante este factor, evidenciándose una respuesta mayor en H. flavipes que en C. gujanensis.

          Translated abstract

          The acoustic adaptation hypothesis had evidenced that the structure of habitat and human intervention are factors that influence the variation in bird vocalizations. This study estimated the effect of road traffc noise on the vocalizations of Cyclarhis gujanensis and Hylophilus flavipes. Parallel transects were laid at two locations in tropical dry forest in the Tolima department, and the songs and noise intensity measurements were recorded. H. flavipes and C. gujanensis sang songs with a higher minimum frequency when in places with noise level above 40 dB. Additionaly, H. flavipes sang songs with a shorter duration of notes and longer duration between notes, and sang with fewer notes in places close to the highway. Furthermore, the last note of C. gujanensis songs tended to be longer under these conditions. This study demonstrated a variation in vocalizations of two species under road traffc noise, with a greater response from H. flavipes than C. gujanensis.

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          Most cited references44

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          The impact of environmental noise on song amplitude in a territorial bird

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            Negative impact of traffic noise on avian reproductive success

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              Songs of the city: noise-dependent spectral plasticity in the acoustic phenotype of urban birds

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                Author and article information

                Journal
                cide
                Ciencia en Desarrollo
                Ciencia en Desarrollo
                Universidad Pedagógica y Tecnológica de Colombia (Tunja, Boyacá, Colombia )
                0121-7488
                July 2015
                : 6
                : 2
                : 177-183
                Affiliations
                [01] orgnameUniversidad del Tolima orgdiv1Facultad de Ciencias Colombia
                Article
                S0121-74882015000200007 S0121-7488(15)00600200007
                6f77087f-c230-4fdd-b467-96079dc5201b

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 17 July 2015
                : 13 April 2015
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 28, Pages: 7
                Product

                SciELO Colombia

                Categories
                Artículos

                Road traffc noise,Song,Scrub greenlet,Rufous-browed Peppershrike,Noise,tráfico vehicular,ruido,Hylophilus flavipes,Cyclarhis gujanensis,canto

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