Patrón de movimientos y ámbito hogareño invernal de aves de pastizal en el noroeste de México
DOI:
https://doi.org/10.18633/biotecnia.v21i3.1010Palabras clave:
Desierto Chihuahuense, Telemetría, Vegetación, Centronyx bairdii, Ammodramus savannarumResumen
La región de Cuchillas de la Zarca es considera como un área prioritaria para la conservación de pastizales reconocida por CONABIO la cual alberga una gran cantidad de aves migratorias durante el invierno. En este estudio calculamos el tamaño del ámbito hogareño, los patrones de movimiento y estructura de la vegetación de dos especies de pastizal el gorrión de Baird (Centronyx bairdii) y el gorrión chapulinero (Ammodramus savannarum). Durante el invierno 2013 - 2014 colocamos 33 transmisores; de los cuales se obtuvieron un total de 1440 registros de detección. El análisis de los datos espaciales permitió definir que la especie Centronyx bairdii (n = 20) recorre en promedio mayor distancia (203.13 m ± DE 187.07) y ocupa mayor área (4.82 ha ± 1.86 IC 95 %) que Ammodramus savannarum (n = 13, 134.31 m ±DE 106.3 y 4.38 ± 2.35 IC 95 %). El análisis de la vegetación permitió suponer que Centronyx bairdii prefiere sitios con mayor cobertura de pasto (66.76 ± 0.6) a diferencia de Ammodramus savannarum que prefirió sitios con pastizal más alto (36.06 ± 0.6). Las medidas geoespaciales y la estructura de la vegetación calculadas en este estudio pueden utilizarse como valores de referencia de ambas especies y pueden aportar conocimiento y entendimiento de su estadía no reproductiva.Descargas
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