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Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain underst...

Major range extension for Orange-fronted Plushcrown Metopothrix aurantiaca in t...

Orange-fronted Plushcrown Metopothrix aurantiaca is a unique, but easily overlooked, small furnariid found in the midstorey and canopy of riverine areas in the Amazon. The species' previously published distribution includes parts of southernmost Colombia, eastern Ecuador, eastern Peru, northern Bolivia and western Brazil. In the easternmost part of its distribution (Brazil), M. aurantiaca occurs in the states o...

Three bird species new to Brazil from the serra da mocidade, a remote mountain ...

From 15 January to 06 February 2016, we conducted an expedition to the Serra da Mocidade, a remote and previously unexplored mountain range in extreme northern Amazonian Brazil. There we encountered three bird species never before documented in Brazilian territory: Grallaria guatimalensis (Grallariidae) was photographed, audio recorded, video recorded and a single specimen collected; Catharus aurantiirostris (T...

The avifauna of Viruá National Park, Roraima, reveals megadiversity in Northern...

While many published maps of avian species richness indicate northern Amazonia to be somewhat species-poor, recent surveys reveal that this area actually possesses one of the most species-rich avifaunas in the Neotropical lowlands. Our surveys indicate that at least 520 bird species occur in Viruá National Park (VNP) and adjacent areas, which is located in the Brazilian state of Roraima (northern Amazonia). Her...

Protocolo para Monitoramento de Comunidades de Aves em Unidades de Conservação ...

Biology and population size of the Golden Parakeet (Guaruba guarouba) in wester...

Golden Parakeets are a poorly known, endangered parrot endemic to the Brazilian Amazon. I describe the flocking patterns, the diet and nest sites of this species and estimate the abundance and size of its population in western Pará. During 2007, I spent about 500 hrs searching for flocks and making transect surveys. Golden Parakeets maintained family flocks of about 10 individuals throughout the year, confirmin...

Where is the symbol of Brazilian Ornithology? The geographic distribution of th...

The Golden Parakeet (Guarouba guarouba) is a poorly known, endangered psittacid endemic to the Brazilian Amazon. We examined point records of the species to identify possible temporal changes in its occurrence and to model its potential distribution. It is known from roughly 70 localities. After 1987, new records extend the known distribution considerably to the southwest, whereas regions at the eastern end of ...

Abundance of Harpy and crested eagles from a reservoir-impact area in the low- ...

In the Brazilian Amazon, two monospecific genera, the Harpy Eagle and Crested Eagle have low densities and are classified by IUCN as Near Threatened due to habitat loss, deforestation, habitat degradation and hunting. In this study, we evaluate occurrence of these large raptors using the environmental surveys database from Belo Monte Hydroelectric Power Plant. Integrating the dataset from two methods, we plotte...

Padrões geográficos e conservação de aves nos habitats criados por rios na Amaz...

Os rios são os aspectos mais marcantes na biogeografia da Amazônia. Apesar disso, as aves especialistas nos habitats criados pelos próprios rios (i.e., ambientes alagáveis) parecem ter sido ignoradas na maior parte dos estudos e sínteses biogeográficas. Esses habitats ribeirinhos compreendem um complexo mosaico de florestas e outras fitofisionomias em diferentes estágios de sucessão, que variam de acordo com a ...