BECAS
MERLO Francis
artículos
Título:
SMALL OWLS IN RELATION TO HABITAT STRUCTURE: OCCURRENCE OF TROPICAL SCREECH-OWL (MEGASCOPS CHOLIBA) AND FERRUGINOUS PYGMY- OWL (GLAUCIDIUM BRASILIANUM) IN THE MOUNTAIN FORESTS OF CENTRAL ARGENTINA
Autor/es:
AGOSTINA S. JUNCOSA-POLZELLA; FRANCIS MERLO; MIGUEL CURA; VALENTIN ZARATE
Revista:
El Hornero
Editorial:
Asociación Ornitológica del Plata
Referencias:
Lugar: Buenos Aires; Año: 2021 vol. 35 p. 87 - 93
ISSN:
0073-3407
Resumen:
Owls are top predators poorly studied in the Neotropics. Their occurrences can be affected by forest structure and landscape features. We report Tropical Screech-Owl (Megascops choliba) and Ferruginous Pygmy Owl (Glaucidium brasilianum) detections in relation to habitat characteristics in central Argentina. During the spring of 2019, we surveyed 250 ha of mountain forest, measured habitat characteristics in presences/ab-sences sites, and estimated owls´ densities. M. choliba (0.16 individuals/ha) was positively associated with snag whereas G. brasilianum (0.05 individuals/ha) was positively associated with proportions of small trees. Our results suggest that these habitat characteristics might be important covariates when studying these two species.
