About
43
Publications
22,268
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
408
Citations
Introduction
PhD in Ecology (National Institute for Amazon Research INPA/Brazil). MSc in Ecology (INPA) and Biologist (Pontifical Catholic University of Rio Grande do Sul - PUCRS). I have experience in Community Ecology, Landscape Ecology, Species Distribution Modelling, Biodiversity Monitoring, and GIS applied to Ecology. I'm interested in any ecological question aiming to understand the mechanisms that explain the spatial patterns of species distribution.
Current institution
Additional affiliations
April 2016 - present
Position
- Fellow Researcher
April 2012 - February 2014
April 2014 - present
Education
August 2017 - July 2021
March 2014 - March 2016
August 2007 - December 2011
Publications
Publications (43)
While the 2023 record-breaking drought led to widespread social-ecological impacts across Amazonia, local impacts of such extreme events are rarely described in detail. Here we leverage a large interdisciplinary data collection related to social and ecological impacts in the Central Amazon. Compound hazards (reduced river water levels, lack of rain...
A Comissão de Ética no Uso de Animais (CEUA) é um órgão colegiado, consultivo, deliberativo e educativo, que atua na avaliação e orientação do uso de animais em pesquisa. A CEUA possui atribuições e competências definidas pela Lei Arouca (Lei nº 11.794/08) e por resoluções do Conselho Nacional de Controle de Experimentação Animal (CONCEA), vinculad...
The lack of synthesized information regarding biodiversity is a major problem among researchers, leading to a pervasive cycle where ecologists make field campaigns to collect information that already exists and yet has not been made available for a broader audience. This problem leads to long-lasting effects in public policies such as spending mone...
The lack of synthesized information regarding biodiversity is a major problem among researchers, leading to a pervasive cycle where ecologists make field campaigns to collect information that already exists and yet has not been made available for a broader audience. This problem leads to long-lasting effects in public policies such as spending mone...
Understanding the effects of long-term habitat fragmentation on functional diversity and trait distributions is fundamental for effective conservation plans. In this study, we investigated the functional diversity and trait-environment relationships of phyllostomid bats in an Amazonian forest-savannah mosaic. Bats were captured across ten forest fr...
Saimiri cassiquiarensis cassiquiarensis (Cebidae) is a primate subspecies with a wide distribution in the Amazonian region of Brazil, Colombia, and Venezuela. However, the boundaries of its geographic range remain poorly defined. This study presents new occurrence localities for this subspecies and updates its distribution using a compiled data set...
A Área de Relevante Interesse Ecológico Javari-Buriti é uma Unidade de Conservação federal que esteve perto de completar 40 anos desde a sua criação e ainda ser considerada uma das áreas menos conhecidas da Amazônia brasileira. Em seu Artigo 1º, o Decreto nº 91.886 de 1985, determinou que “sob a denominação de Javari-Buriti, fica declarada Área de...
Objectives:
The morphological features of the gastrointestinal tract (GIT) in mammals reflect a species' food niche breadth and dietary adaptations. For many wild mammals, the relationship between the structure of the GIT and diet is still poorly understood, for example, the GIT for frugivorous primates is usually classified as unspecialized and h...
The Amazon forest has the highest biodiversity on Earth. However, information on Amazonian vertebrate diversity is still deficient and scattered across the published, peer‐reviewed, and gray literature and in unpublished raw data. Camera traps are an effective non‐invasive method of surveying vertebrates, applicable to different scales of time and...
The Amazon forest has the highest biodiversity on Earth. However, information on Amazonian vertebrate diversity is still deficient and scattered across the published, peer-reviewed, and gray literature and in unpublished raw data. Camera traps are an effective non-invasive method of surveying vertebrates, applicable to different scales of time and...
This study presents 35 negative serologies for antibodies anti‐T. gondii in free‐living primates from Central Amazonia. Our results suggest that these populations have not had contact with the parasite and, therefore, do not have antibodies. This was the first study surveying T. gondii in Cacajao, Callicebus, Pithecia, and Saguinus monkeys.
The long‐term coexistence of sympatric species is dependent on segregation in at least one of three niche dimensions: space, time or feeding habits. Hunting by people can influence species' temporal and spatial patterns and consequently affect their coexistence. We tested the hypothesis that hunting influences spatial and temporal patterns of coexi...
Infectious diseases are a growing threat to the conservation of nonhuman primates. In the case of diseases shared with humans, the risk is higher where habitat loss and fragmentation facilitate proximity to wildlife. Yellow fever (YF) is an infectious disease transmitted by mosquito vectors between primates in a sylvatic cycle or between humans in...
Amazonian flooded (várzea) and upland (terra firme) forests harbor distinct assemblages of most taxonomic groups. These differences are mainly attributed to flooding, which may affect directly or indirectly the persistence of species. Here, we compare the abundance, richness and composition of butterfly assemblages in várzea and terra firme forests...
• Pantepui is a Neotropical archipelago of remote sky islands (tepuis) that harbours a unique and poorly known biota, such as the endemic butterfly Antirrhea ulei. The Vicariance-Migration hypothesis argues that Pantepui biota originated from a complex succession of climatic shifts, causing up-and-down migrations of cool-adapted species from the la...
Character displacement, or a shift in traits where species co-occur, is one of the most common ecological patterns to result from interactions between closely related species. Usually, character displacement is associated to divergence in traits, though, they might be convergent, especially when used for aggressive interference between species. In...
This species is listed as Endangered, given that its entire range is confined to one location within an area of occupancy of 870 km², which is split into three geographically isolated subpopulations with no demographic or genetic exchange: Mamirauá Sustainable Development Reserve, Capucho and Tarará islands. Although this protected area is well man...
Ateles chamek is listed as Endangered as the species is estimated to have declined by at least 50% over the past 45 years (three generations) primarily due to hunting and habitat loss. The forests in the southern part of its range, particularly in the states of Rondônia and Mato Grosso (Brazil), are devastated along the agricultural frontier/arc of...
Ecological niche models (ENMs) are widely used tools for predicting species geographic distribution as a function of environmental variables. The inclusion of biotic factors in the predictor suite can significantly increase the predictive power of such models, leading to a model closer to the realized niche for the species under investigation. In t...
Bats have the second highest mammalian species richness globally, and account for about half of the mammal species diversity in tropical forests. In the Neotropical region, Brazil is the second most bat species-rich country, and the Brazilian Amazonia harbours most of the Brazilian bat diversity. However, many areas of the Amazon have sampling gaps...
The jaguar (Panthera onca) is widely distributed across a broad range of habitat types, where its feeding habits and habitat use patterns vary significantly. The jaguar and its main arboreal prey-the brown-throated sloth (Bradypus variegatus) and the red howler monkey (Alouatta juara)-are widespread in the Amazonian floodplain forests of the Mamira...
The jaguar (Panthera onca) is widely distributed across a broad range of habitat types, where its feeding habits and habitat use patterns vary significantly. The jaguar and its main arboreal prey – the brown-throated sloth (Bradypus variegatus) and the red howler monkey (Alouatta juara) – are widespread in the Amazonian floodplain forests of the Ma...
Mapping yellow fever (YF) risk is often based on place of infection of human cases, whereas the circulation between nonhuman primates (NHP) and vectors is neglected. In 2008/2009, YF devastated NHP at the southern limit of the disease in the Americas. In view of the recent expansion of YF in Brazil, we modeled the environmental suitability for YF w...
The Amazonian flooded and upland forests harbour distinct assemblages of most taxonomic groups. These differences can be mainly attributed to flooding, which may affect directly or indirectly the persistence of species. Here, we compare the density, richness and composition of butterfly assemblages in várzea and terra firme forests, and evaluate wh...
Nested structures of species assemblages have been frequently associated with patch size and isolation, leading to the conclusion that colonization–extinction dynamics drives nestedness. The ‘passive sampling’ model states that the regional abundance of species randomly determines their occurrence in patches. The ‘habitat amount hypothesis’ also ch...
The rate of deforestation in the Amazon is increasing. Predictive models estimate that as a result of agricultural expansion 40% of these forests will be lost by 2050. As a consequence the habitat of forest-dwelling species such as the Endangered black-faced black spider monkey Ateles chamek is being lost, particularly along the arc of deforestatio...
Aim
We tested the “habitat amount hypothesis”, which predicts that the effect of patch size on number of species results from a “sample area effect” rather than an “island effect”. Specifically, we (1) compared parameters of the species–area relationship ( SAR ) of arboreal mammals in forested fluvial islands and continuous forest, and (2) separate...
Descriptions of new tool-use events are important for understanding how ecological context may drive the evolution of tool use among primate traditions. Here, we report a possible case of the first record of tool use by wild Amazonian capuchin monkeys (Sapajus macrocephalus). The record was made by a camera trap, while we were monitoring caiman nes...
Field studies of primates often require the capture and marking of individuals in order to monitor behavior, health and
population parameters. However, there have been few field studies in which squirrel monkeys (genus Saimiri) have been
successfully captured. Here we report results obtained using two different trapping methods to capture Saimiri v...
The squirrel monkey, Saimiri, is a pan-Amazonian Pleistocene radiation. We use statistical phylogeographic methods to create a mitochondrial DNA-based timetree for 118 squirrel monkey samples across 68 localities spanning all Amazonian centers of endemism, with the aim of better understanding (1) the effects of rivers as barriers to dispersal and d...
The black-faced black spider monkey (Ateles chamek) is endangered because of hunting and habitat loss. There are many gaps in our understanding of its geographic distribution. The Ucayali-Solimões-Amazon fluvial complex is currently recognized as the northern boundary of the species' range, although published reports have indicated that it occurs n...
Howler monkeys (Alouatta spp.) have long been considered strongly vegetarian primates. Their occasional ingestion of invertebrates has largely been interpreted as unintentional. Recent observations of the consumption of bird eggs by Alouatta caraya living in small and resource-impoverished habitat patches in the state of Rio Grande do Sul (RS), Bra...
A carne de animais silvestres é uma importante fonte de proteína animal e de renda para diversas populações humanas do mundo. Na Amazônia brasileira, a população rural consome anualmente entre 67.173 a 164.692 toneladas de animais silvestres. Nas RDS's Mamirauá e Amanã, 47 espécies de mamíferos são sujeitas a caça, sendo Alouatta juara a espécie ma...
Armadilhas fotográficas têm sido especialmente utilizadas para amostragem de mamíferos e aves de médio e grande porte de hábitos terrestres e semi-terrestres. A fauna arborícola é frequentemente vista como menos provável de ser detectada, no entanto, poucos estudos concentram seus levantamentos em estratos intermediários ou superiores da floresta....
Questions
Question (1)
I'd like to compare more than two models (in my case the're six models, all binomial with two continuous predictors each), in order to assess which model provides the best fit. I suppose I have to use the Deviance Information Criterion (DIC) and I am using the rjags package. However, it seems that you cannot compare more than two models simultaneously in the function -- we have to compare the difference between two models and choose the one with best fit. I thought I could perform a pair-wise comparison (with only six models it would not be that time-spending), but I don't know if it really makes sense. I also thought I could simply rank all models by their DIC values and assume that the model with lower DIC is preferred, does that make sense?
Could anyone give some guidance on that? I would greatly appreciate any suggestions.
