Ecología de la familia Troglodytidae en la Eco-Región Tumbesina del suroccidente ecuatoriano

Abstract

Tumbesian dry forests are a global conservation priority due to their high levels of endemism that are affected by strong anthropogenic pressures. The Tumbesian Eco-Region has a marked climatic seasonality that establishes a dry season and a rainy season. The information known about the bird communities in this ecosystem is limited, especially of the Troglodytidae family which is one of the most common and dominant in this region. The objective of this research was to analyze the ecology of this family in three sites of the Tumbesian Eco-Region of southwestern Ecuador. For the sampling of birds, the methodology of point counts was applied in pre-established points with fixed radial limits. During the year 2020, sampling was carried out by climatic season and by anthropogenic disturbance zones established according to the conditions of each site. Eight species of the Troglodytidae family were identified: Campylorhynchus fasciatus, Cantorchilus nigricapillus, Cantorchilus superciliaris, Henicorhina leucophrys, Microcerculus marginatus, Pheugopedius mystacalis, Pheugopedius sclateri, Troglodytes aedon. Cantorchilus superciliaris was the most abundant in Ancon, Pheugopedius sclateri in Cerro Blanco and Campylorhynchus fasciatus in Loma Alta. It was concluded that the seasonality of rainfall within these sites did not significantly influence the family, but the level of anthropogenic disturbance in which they develop, identifying certain habitat preferences of the species of this family.