Estado de las aves migratorias neárticas y australes en el estado brasileño de Acre, en el suroeste de la Amazonia: conclusiones extraídas de las contribuciones de la ciencia ciudadana
Estado de las aves migratorias neárticas y australes en el estado brasileño de Acre, en el suroeste de la Amazonia: conclusiones extraídas de las contribuciones de la ciencia ciudadana
Laboratório de Ornitologia, Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, Brazil | Laboratório de Pesquisas Paleontológicas, Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, Brazil
Galdino Pereira, Alnizia, Kaylane de Oliveira Silva, Luana Alencar, Ighor Dienes Mendes, and Edson Guilherme. 2026. “Estado De Las Aves Migratorias neárticas Y Australes En El Estado brasileño De Acre, En El Suroeste De La Amazonia: Conclusiones extraídas De Las Contribuciones De La Ciencia Ciudadana”. El Hornero 41 (1). https://doi.org/10.56178/eh.v41i1.1531.
Las aves migratorias realizan movimientos estacionales entre las zonas de reproducción y las zonas no reproductoras en busca de condiciones climáticas y alimenticias favorables. En América del Sur se reconocen dos grandes sistemas migratorios: el neártico y el austral. El estado brasileño de Acre, situado en el suroeste de la Amazonia, sirve de escala estratégica para ambos grupos, pero las crecientes presiones antropogénicas amenazan estos corredores. Por lo tanto, comprender la dinámica de la migración es esencial para la planificación de la conservación. Este estudio analizó los patrones temporales de las especies de aves migratorias neárticas y australes en Acre y evaluó su grado de superposición temporal. Los datos se obtuvieron de plataformas de ciencia ciudadana, con registros fotográficos filtrados por especie y mes y visualizados mediante mapas de calor. Los registros se clasificaron en meses reproductivos y no reproductivos, y las diferencias se comprobaron mediante la prueba no paramétrica U de Mann-Whitney (p < 0.05). Se analizaron un total de 1554 imágenes que representaban 61 especies migratorias (31 neárticas y 30 australes). El Pitotoy Solitario (Tringa solitaria) mostró la mayor frecuencia de registros entre los migrantes neárticos, mientras que el Churrinche (Pyrocephalus rubinus) prevaleció dentro del grupo austral. El análisis fenológico reveló ventanas estacionales distintas: las aves migratorias neárticas se observaron principalmente entre septiembre y marzo, mientras que las migratorias australes se registraron entre marzo y septiembre, con un solapamiento mínimo. Algunas especies, como el Chiví-chiví (Vireo chivi) y Tuquito Gris (Empidonomus aurantioatrocristatus), se observaron durante casi todo el año, lo que sugiere estrategias complejas que incluyen la migración parcial o la coexistencia de poblaciones residentes y migratorias. Estos hallazgos ponen de relieve el papel de Acre como corredor migratorio dinámico y demuestran el valor de la ciencia ciudadana en el seguimiento de la biodiversidad aviar en regiones remotas, lo que refuerza su importancia para las estrategias de conservación.
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