INVESTIGADORES
GARCIA BORBOROGLU Jorge Pablo
congresos y reuniones científicas
Título:
Habitat requirements and selection in Olrog´s Gulls in Argentina.
Autor/es:
GARCIA BORBOROGLU, P.; YORIO, PABLO
Lugar:
Urbana-Champaign
Reunión:
Congreso; 121st American Ornithologists Union Stated Meeting; 2003
Institución organizadora:
American Ornithological Union
Resumen:
The Olrog´s Gull is internationally considered as threatened and is endemic to the Argentine coast. We analyzed its breeding habitat requirements and selection along 2500km of coastline, encompassing its entire distribution range. We studied six colonies and measured 13 habitat variables at 336 nests and 139 random points from 1998 to 2001. Colonies were located in proximity to intertidal mudflats with presence of crabs (367 PLUSorMINUS 407 m, N = 6), their main prey throughout their range. All colonies were on islands. Colonies were placed near the high tide line (12.9 PLUSorMINUS 13.7, range = 0.7-40) m and at low altitude over the sea level (0.9 PLUSorMINUS 0.7, range = 0.1-1.9 m) (N = 3 colonies and 12 subcolonies) . Colonies were located on open ground and far from the tall vegetation or partly bordered by short species (
