Bird Diversity in Actively and Naturally Restored Tropical Forests in an Urban-Agricultural Landscape

Urban Farm DB summary

A 2017 study surveyed bird communities in three forest sites with different restoration and natural revegetation histories, 20–40 years since clearing, within a tropical urban-agricultural landscape in the Ecuadorian Amazon, comparing manually restored and naturally revegetating forest. A diverse assemblage of birds was found visiting and occupying the forest fragments, including two IUCN-listed near-threatened species. Bird species richness was similar across sites with different management histories and species composition varied only slightly, but differences existed in the presence and occupancy of forest-dependent groups such as large frugivores and forest insectivores. In the manually restored site, bird diversity may have been limited by under-developed forest structure, though the effects of patch size and landscape matrix could not be isolated. The study suggests future restoration efforts consider forest structure alongside plant species diversity, and that future studies account for landscape and matrix parameters when evaluating restoration projects.