Éxito reproductivo de los pájaros bobos patas azul, Sula nebouxii, y los pájaros bobos café, Sula leucogaster, como indicador de perturbación por uso turístico en las Islas Marietas, México

Abstract

Breeding success of the blue-footed booby, Sula nebouxii, and the brown booby, Sula leucogaster, as an indicator of touristic disturbance in the Islas Marietas, Mexico.-We studied the breeding success of two seabird species, the blue-footed booby, Sula nebouxii, and the brown booby, Sula leucogaster, in relation to touristic disturbance in order to focus conservation management strategies in the protected area of the Marietas Islands in Bahía de Banderas, Mexico. Data were collected throughout the breeding season of 2013 at Isla Larga. We considered three sites under different conditions of simulated disturbance within the colonies: 'medium', visits constrained to a single path; 'high', visits without spatial restrictions, and 'low', no visits. The total numbers of nests, eggs and chicks for each species were recorded weekly at the three sites. On the basis of these data, we determined the viability of eggs (hatching success) and chicks. A generalized linear mixed model (GLIMMIX) showed that breeding success (eggs-to-fledglings rate) had no relationship to the conditions of the area and but was significantly lower in the blue-footed booby. The presence of tourists, as measured in this study, was not the cause of nesting failure. Other, non-evaluated factors likely play a role in limiting the breeding success of the two species of booby studied here.

La participación social para el uso turístico: caso parque nacional Islas Marietas, México

“…Por ejemplo, se calculó la capacidad de carga turística del sendero terrestre de la isla Larga (Cornejo-Ortega, Chávez-Dagostino & Cupul Magaña, 2011) e hicieron algunas consideraciones para la evaluación del impacto ambiental del buceo recreativo en el Parque (Preciado, Simental, Ochoa-Chávez & Chávez-Dagostino, 2011). También se evaluó el éxito reproductivo de los pájaros bobos en la isla Larga como indicador de perturbación por uso turístico (Cornejo-Ortega, Chávez-Dagostino & Cupul Magaña, 2016).…”