Thiago Orsi Laranjeiras

Instituto Chico Mendes de Conservação da Biodiversidade | ICMBio · NGI ICMBio Roraima

While maps of avian diversity show the northern Amazon to be somewhat poor in terms of species richness, recent surveys reveal that this area actually possesses one of the most species-rich avifaunas for the Neotropics lowlands. Our surveys indicate that at least 519 bird species occur in Viruá National Park (VNP) and adjacent areas, located in the...

Despite the importance of rivers in Amazonian biogeography, avian distribution patterns in river‐created habitats ( i.e ., floodplain forests) have been sparsely addressed. Here, we explore geographic variation in floodplain forest avifaunas, specifically regarding one of the most striking aspects of the Amazon: the diversity of river “colors” ( i....

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...

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 recor...

Graphical abstract Highlights d Ecological metadata were compiled for 7,694 sites across the Brazilian Amazon d Accessibility and proximity to research facilities influenced research probability d Knowledge gaps are greater in uplands than in wetlands and aquatic habitats d Undersampled areas overlap predicted hotspots of climate change and defores...

Aim Amazonian floodplains include distinct types of seasonally flooded habitats, determined by the flooding regime and sedimentation dynamics. Some bird species prefer specific habitat types within the floodplains. To investigate whether distinct habitats are differentially affected by geologic and climatic history, we compare population history in...

The annual flooding in the Amazon basin transforms the understory of floodplain forests into an aquatic environment. However, a great number of non-aquatic bird species occupy the understory and midstory of these forests. In general, these birds are thought to be sedentary and territorial, but the way they adapt to this dramatic seasonal transforma...

Aim Although ‘river color’ or water type is an important determinant of Amazonian floodplain biodiversity, the relevance of mixing distinct water types at river confluences to the distribution of terrestrial floodplain fauna has been largely overlooked. We investigated how the influx of a sediment‐rich whitewater tributary affects the floodplain fo...

A participatory monitoring programme of an exceptional modification of urban soundscapes during Covid-19 containment.

Aim: To investigate the influence of bioclimatic, productivity and topographic varia- bles on avian diversity patterns in riparian habitats along a savanna/humid forest en- vironmental gradient. We investigate how this gradient affects patterns of taxonomic and phylogenetic alpha and beta diversities, and whether the changes observed along the rive...

No momento em que os estudos para a implantação da UHE Bem Querer avançam rapidamente [3], torna-se importante chamar atenção para resultados de pesquisas recentes que levantam preocupações sobre os impactos potenciais desta barragem. Ao menos sete barragens estão planejadas para a bacia do rio Negro, sendo quatro ao longo do rio Branco. A UHE de B...

The Rio Branco is a river with unique biogeographic and ecological features, threatened by the Brazilian Government’s plan to build a major hydroelectric dam and associated hydroway along its course. The river crosses one of Amazonia’s largest rainfall gradients and a major geomorphological boundary along a savanna/forest ecotone, marked by the Bem...

Este protocolo de monitoramento de comunidades de aves foi construído no contexto do Programa de Monitoramento in situ da Biodiversidade em unidades de conservação federais do Instituto Chico Mendes de Conservação da Biodiversidade. As unidades de conservação federais possuem diferentes condições de gestão, relacionadas aos recursos humanos, financ...

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...

This is the illustrated identification guide for mammal and bird species of region 2 targeted in the Program for Biodiversity Monitoring of the Brazilian Ministry of Environment and Instituto Chico Mendes da Biodiversidade (ICMBio).

This is the illustrated identification guide for mammal and bird species of region 4 targeted in the Program for Biodiversity Monitoring of the Brazilian Ministry of Environment and Instituto Chico Mendes da Biodiversidade (ICMBio).

This is the illustrated identification guide for mammal and bird species of region 6 targeted in the Program for Biodiversity Monitoring of the Brazilian Ministry of Environment and Instituto Chico Mendes da Biodiversidade (ICMBio).

This is the illustrated identification guide for mammal and bird species of region 5 targeted in the Program for Biodiversity Monitoring of the Brazilian Ministry of Environment and Instituto Chico Mendes da Biodiversidade (ICMBio).

This is the illustrated identification guide for mammal and bird species of region 7 targeted in the Program for Biodiversity Monitoring of the Brazilian Ministry of Environment and Instituto Chico Mendes da Biodiversidade (ICMBio).

This is the ilustrated identification guide for mammal and bird species of region 1 targeted in the Program for Biodiversity Monitoring of the Brazilian Ministry of Environment and Instituto Chico Mendes da Biodiversidade (ICMBio).

This is the illustrated identification guide for mammal and bird species of region 3 targeted in the Program for Biodiversity Monitoring of the Brazilian Ministry of Environment and Instituto Chico Mendes da Biodiversidade (ICMBio).

Neste estudo comparamos as comunidades de aves em locais preservados e sujeitos a corte seletivo na Floresta Nacional do Jamari – Rondônia. Comparamos a estrutura das comunidades (riqueza, abundancia e composição) amostrando quatro áreas manejadas por corte seletivo de madeira (um ano depois do corte) e quatro locais nas áreas de preservação desta...

We report here the research findings comparing the bird assemblages in preserved and selective logging managed areas in Floresta Nacional do Jamari Reserve – Rondônia – Brazil. We compared the structure of bird communities (richness, abundance and composition) by sampling four areas of selective logging (one year after cut) and four preserved sites...

The Brazilian cerrado is a global biodiversity hotspot and one of the most poorly sampled regions in the Neotropics. We describe the bird community structure among the distinct cerrado phytophysiognomies and among different periods of the day, in five environments of this biome. Bird observations were carried out from October 2003 to March 2005, by...

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 fami...

White-winged Potoo Nyctibhis leucopterus is known from very few localities in the Atlantic Forest, but is supposed to occur throughout suitable habitats in Amazonia. Known solely from specimens until the late 1980s, there are still very few data on its natural history and distribution. Here we report a striking new record of N. leucopterus in the A...

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 consi...

O estudo de aves do cerrado vem ganhando cada vez mais relevância à medida que esse ambiente é substituído pela urbanização, pastagens e agricultura. Neste trabalho, foram analisadas a composição e a estrutura da comunidade da avifauna em duas áreas de cerrado (típico e ralo) do campus Henrique Santillo, da Universidade Estadual de Goiás, em Anápol...