Distribución altitudinal de las aves del sector Cajanuma del Parque Nacional Podocarpus

Global biodiversity is exposed to the effects of climate change, where studies on altitudinal gradients allow us to observe the response of taxonomic groups such as birds to these changes. In Ecuador, studies on the distribution of birds across altitudinal gradients have been little addressed and have mostly been conducted at a regional scale. In this research we evaluated the change in altitudinal distribution of the avifauna of the Cajanuma sector of the Podocarpus National Park, as a baseline to identify the effects of climate change at a local scale. The information was collected using point counts and song recordings. Alpha and beta diversity were determined for the composition, turnover and similarity of bird communities. A total of 65 bird species were recorded, with the highest diversity concentrated between 2 800- 3 000 m a.s.l. and decreasing with increasing altitude, with species such as Pheugopedius euophrys, Scytalopus parkeri and Grallaria nuchalis as the most abundant along the gradient. The bird communities in the different altitudinal ranges are different, with a species turnover of 52.94 % between the low and high ranges. The composition of the bird communities in the analyzed ranges is different, leading to the formation of distinguishable groups of birds along the altitudinal gradient, conforming to a high diversity pattern through a plateau of lower elevations and then decreasing monotonically. Key words: bird diversity, mountaintop, altitudinal gradients, climate change.

• Автор: Escudero Armijos, Vinicio Andrés (author)
• Формат: masterThesis
• Мова: spa
• Опубліковано: 2023
• Предмети: CAMBIO CLIMATICO; AVES; DIVERSIDAD DE AVES
• Онлайн доступ: https://dspace.unl.edu.ec/jspui/handle/123456789/27813