75 Works

O êxtase do povo: P.M. (Cuba, 1961) e Arrasta a bandeira colorida (Brasil, 1970)

Victor Guimarães
O artigo traça uma comparação figurativa entre P.M. (Sabá Cabrera Infante & Orlando Jiménez Leal, Cuba, 1961) e Arrasta a bandeira colorida (Aloysio Raulino & Luna Alkalay, Brasil, 1970), no sentido de interrogar como a figuração do povo no cinema latino-americano é atravessada pela experiência histórica.

Dataset used in the paper: Photosynthetic heat tolerance in plants with different foliar water uptake strategies

Daniela Boanares, José Lemos-Filho, Rosy Mary Santos Isaias & Marcel Giovanni Costa França
Dataset used in the paper “Photosynthetic heat tolerance in plants with different foliar water uptake strategies”.

Ecological mechanisms explaining interactions within plant-hummingbird networks: morphological matching increases towards lower latitudes

Jesper Sonne, Jeferson Vizentin-Bugoni, Pietro K. Maruyama, Andréa C. Araújo, Edgar Chávez-González, Aline G. Coelho, Peter A. Cotton, Oscar H. Marín-Gómez, Carlos Lara, Liliana R. Lasprilla, Caio G. Machado, Maria A. Maglianesi, Tiago S. Malucelli, Ana M. Martín-González, Genilda M. Oliveira, Paulo E. Oliveira, Raul Ortiz-Pulido, Márcia A. Rocca, Licléia C. Rodrigues, Ivan Sazima, Benno I. Simmons, Boris Tinoco, Isabela G. Varassin, Marcelo F. Vasconcelos, Bob O’Hara … & Bo Dalsgaard
Interactions between species are influenced by different ecological mechanisms, such as morphological matching, phenological overlap, and species abundances. How these mechanisms explain interaction frequencies across environmental gradients remains poorly understood. Consequently, we also know little about the mechanisms that drive the geographical patterns in network structure, such as complementary specialization and modularity. Here, we use data on morphologies, phenologies and abundances to explain interaction frequencies between hummingbirds and plants at a large geographic scale. For...

Data from: Changes in tree and liana communities along a successional gradient in a tropical dry forest in south-eastern Brazil

Yule Roberta Ferreira Nunes, Mario Marcos Espirito-Santo, Giovana Rodrigues Da Luz, Maria Das Dores Magalhaes Veloso, Rubens Manuel Dos Santos, Sofia Calvo-Alvarado, Sandra Milena Duran, Santos D'Ângelo Neto, Bruno G. Madeira, G. Wilson Fernandes & G. Arturo Sánchez Azofeifa
We investigated changes in species composition and structure of tree and liana communities along a successional gradient in a seasonally dry tropical forest. There was a progressive increase in tree richness and all tree structural traits from early to late stages, as well as marked changes in tree species composition and dominance. This pattern is probably related to pasture management practices such as ploughing, which remove tree roots and preclude regeneration by resprouting. On the...

Data from: Subtle changes in elevation shift bat-assemblage structure in Central Amazonia

, Lucas Gabriel Do Amaral Pereirab, Valéria Da Cunha Tavaresc, William E. Magnussond, Fabricio Beggiato Baccaroe & Paulo Estefano D. Bobrowiec
The distribution patterns of animal species at local scales have been explained by direct influences of vegetation structure, topography, food distribution and availability. However, these variables can also interact and operate indirectly on the distribution of species. Here, we examined the direct and indirect effects of food availability (fruits and insects), vegetation clutter and elevation in structuring phyllostomid-bat assemblages in a continuous terra firme forest in Central Amazonia. Bats were captured in 49 plots over...

Data from: Bioacoustics reveals two new syntopic species of Adenomera Steindachner (Anura: Leptodactylidae: Leptodactylinae) in the Cerrado of central Brazil

Thiago Ribeiro De Carvalho & Ariovaldo Antonio Giaretta
In this paper, we describe two syntopic species of Adenomera from the Chapada dos Veadeiros microregion, northern State of Goiás, central Brazil, recognized based on morphology, color patterns, and bioacoustics. Specimens and calls were obtained in the Municipality of Teresina de Goiás, central Brazil. Adenomera cotuba sp. nov. is diagnosed from the other 16 congeneric species by its 1) small size (adult male SVL 18.6–20.5 mm) and very robust body; 2) dorsum glandular/granular with no...

Data from: Disentangling the pathways of land use impacts on the functional structure of fish assemblages in Amazon streams

Rafael P. Leitão, Jansen Zuanon, David Mouillot, Cecília G. Leal, Robert M. Hughes, Philip R. Kaufmann, Sébastien Villéger, Paulo S. Pompeu, Daniele Kasper, Felipe R. De Paula, Silvio F. B. Ferraz & Toby A. Gardner
Agricultural land use is a primary driver of environmental impacts on streams. However, the causal processes that shape these impacts operate through multiple pathways and at several spatial scales. This complexity undermines the development of more effective management approaches, and illustrates the need for more in-depth studies to assess the mechanisms that determine changes in stream biodiversity. Here we present results of the most comprehensive multi-scale assessment of the biological condition of streams in the...

Data from: Reducing cryptic relatedness in genomic datasets via a central node exclusion algorithm

Pablo A.S. Fonseca, Thiago P. Leal, Fernanda Caroline Santos, Mateus Henrique Gouveia, Samir Id-Lahoucine, Izinara C. Rosse, Ricardo V. Ventura, Frank Angelo T. Bruneli, Marco Antônio Machado, Maria Gabriela C.D. Peixoto, Eduardo Tarazona-Santos, Maria Raquel S. Carvalho & Pablo A. S. Fonseca
Cryptic relatedness is a confounding factor in genetic diversity and genetic association studies. Development of strategies to reduce cryptic relatedness in a sample is a crucial step for downstream genetic analyzes. The present study uses a node selection algorithm, based on network degrees of centrality, to evaluate its applicability and impact on evaluation of genetic diversity and population stratification. 1,036 Guzerá (Bos indicus) females were genotyped using Illumina Bovine SNP50 v2 BeadChip. Four strategies were...

New set of microsatellite markers for the great-billed seed-finch (Sporophila maximiliani – Passeriformes: Thraupidae): tools for inspection and conservation

Amanda De Melo, Evanguedes Kalapothakis, Sandra Ludwig, Luiz Alfredo Baptista, Mariana Lara, Leo Silva & Mariana Telles
The Thraupidae family is one of the most wanted by bird breeders in Brazil due to its diverse, colorful and melodious singers as representatives. The Great-billed Seed-finch, Sporophila maximiliani, is the only representative of the genus Sporophila considered critically endangered in Brazil. Due to the demands of environmental agencies and of conservation programs, there is a need to increase the number of molecular markers available for the genus and specially for S.maximiliani. Therefore, this work...

Data from: Searching for keystone plant resources in fruit-frugivore interaction networks across the Neotropics

João Vitor De S. Messeder, Tadeu J. Guerra, Wesley Dáttilo & Fernando A. O. Silveira
Identifying keystone plant resources (KPR) is a contentious issue in ecology and conservation. Despite recent advances provided by mutualistic networks, we still lack studies addressing large-scale identification of keystone plants. We developed a novel quantitative framework for the large-scale identification of KPR that combines centrality and effects of simulated removals on networks properties. We built a database with 38 fruit-frugivore networks comprising 6180 pairwise interactions from Neotropical forest and non-forest ecosystems ranging from sea level...

Data from: Deconstructing species richness–environment relationships in Neotropical lianas

Leila Meyer, W. Daniel Kissling, Lucia G. Lohmann, Joaquín Hortal & José A. F. Diniz-Filho
Abstract Aim: Studying species richness patterns by considering all species as equivalent units may prevent a deeper understanding of the origin and maintenance of biodiversity. Here, we deconstructed the species richness of Neotropical lianas by specific attributes of species to study richness–environment relationships. Location: Neotropics Taxon: Tribe Bignonieae (Bignoniaceae), the largest clade of Neotropical lianas Methods: We used five morphological, one geographical and two evolutionary attributes of species, each with 2–7 attribute states. We compared...

Data from: Abundance drives broad patterns of generalisation in plant-hummingbird pollination networks

Benno I. Simmons, Jeferson Vizentin-Bugoni, Pietro K. Maruyama, Peter A. Cotton, Oscar H. Marín-Gómez, Carlos Lara, Liliana Rosero-Lasprilla, María A Maglianesi, Raúl Ortiz-Pulido, Márcia A. Rocca, Licléia C. Rodrigues, Boris Tinocco, Marcelo F. Vasconcelos, Marlies Sazima, Ana M. Martín González, Jesper Sonne, Carsten Rahbek, Lynn V. Dicks, Bo Dalsgaard & William J. Sutherland
Abundant pollinators are often more generalised than rare pollinators. This could be because abundant species have more chance encounters with potential interaction partners. On the other hand, generalised species could have a competitive advantage over specialists, leading to higher abundance. Determining the direction of the abundance-generalisation relationship is therefore a ‘chicken-and-egg’ dilemma. Here we determine the direction of the relationship between abundance and generalisation in plant-hummingbird pollination networks across the Americas. We find evidence that...

Data from: Disentangling the factors that shape bromeliad and ant communities in the canopies of cocoa agroforestry and preserved Atlantic Forest

Reuber Antoniazzi, Wesley DaRocha, Jacques Delabie, Götz Schroth, Geraldo Fernandes & Frederico Neves
In tropical forest canopies, host tree characteristics shape epiphyte communities, and both host tree characteristics and epiphytes determine invertebrate communities, e.g., ants. Tree height is among the factors most often mentioned as a strong predictor for both bromeliad and ant communities. However, many factors interact dynamically in shaping the tree-bromeliad-ant association. Here, we investigated the effects of the host tree and canopy structural characteristics on both bromeliads and ants. We sampled bromeliads on 180 trees...

Modeling Dynamic Ideological Behavior in Political Networks

Carlos Henrique Gomes Ferreira, Fabricio Murai Ferreira, Breno de Souza Matos & Jussara Marques de Almeida
In this article, we model and analyze the dynamic behavior of political networks, both at the individual (party member) and ideological community levels. Our study relies on public data covering 15 years of voting sessions of the House of Representatives of two diverse party system, namely, Brazil and the United States. Whereas the former is an example of a highly fragmented party system, the latter illustrates the case of a highly polarized and non-fragmented system....

Alianças audiovisuais em tempos sombrios: Eduardo Coutinho, o Centro de Criação de Imagem Popular (CECIP) e os movimentos civis

Claudia Mesquita & Vinícius Oliveira

Rural landscapes and urban development in Latin America

Leonardo B. Castriota & Betina Adams
Within the expansion of the concept of heritage, in the last decades, some new ideas have gained a decisive and innovative role. "Cultural landscapes", for instance, adopted by UNESCO since the early 1990s, inextricably combines the material and immaterial aspects of the heritage concept, that formerly was often thought separately. It also enhances the significant interactions between man and the natural environment. Thus, this concept seems to offer a rich perspective when applied to the...

Evento colisional e eventos térmicos proterozóicos registados pela monazite inclusa em corindo da região de Itaguara (Cratão São Francisco meridional, Brasil)

Alexandre Chaves & A. Dutra

Data from: Kooiichthys jono n. gen. n. sp., a primitive catfish (Teleostei, Siluriformes) from the marine Miocene of southern South America

Maria De Las Mercedes Azpelicueta, Alberto Luis Cione, Mario Alberto Cozzuol & Juan Marcos Mirande
A specimen of a remarkable new catfish genus and species was collected in middle/late Miocene marine beds of the Puerto Madryn Formation at the base of the marine cliff of the sea lion colony area near Puerto Pirámide, southern coast of Península Valdés, northeastern Patagonia, Argentina. Siluriforms (catfishes) constitute a most important monophyletic ostariophysan group of mainly freshwater fishes that occurs in almost all continents but it is especially diverse in South America. Catfishes are...

Data from: Greenhouse gas emissions from reservoir water surfaces: a new global synthesis

Bridget R. Deemer, John A. Harrison, Siyue Li, Jake J. Beaulieu, Tonya DelSontro, Nathan Barros, José F. Bezerra-Neto, Stephen M. Powers, Marco A. Dos Santos & J. Arie Vonk
Collectively, reservoirs created by dams are thought to be an important source of greenhouse gases (GHGs) to the atmosphere. So far, efforts to quantify, model, and manage these emissions have been limited by data availability and inconsistencies in methodological approach. Here, we synthesize reservoir CH4, CO2, and N2O emission data with three main objectives: (1) to generate a global estimate of GHG emissions from reservoirs, (2) to identify the best predictors of these emissions, and...

Data from: Legume abundance along successional and rainfall gradients in neotropical forests

Maga Gei, Danaë M. A. Rozendaal, Lourens Poorter, Frans Bongers, Janet I. Sprent, Mira D. Garner, T. Mitchell Aide, José Luis Andrade, Patricia Balvanera, Justin M. Becknell, Pedro H.S. Brancalion, George A. L. Cabral, Ricardo Gomes César, Robin L. Chazdon, Rebecca J. Cole, Gabriel Dalla Colletta, Ben De Jong, Julie S. Denslow, Daisy H. Dent, Saara J. DeWalt, Juan Manuel Dupuy, Sandra M. Durán, Mário Marcos Do Espírito Santo, G. Wilson Fernandes, Yule Roberta Ferreira Nunes … & Jennifer S. Powers
The nutrient demands of regrowing tropical forests are partly satisfied by nitrogen (N)-fixing legume trees, but our understanding of the abundance of those species is biased towards wet tropical regions. Here we show how the abundance of Leguminosae is affected by both recovery from disturbance and large-scale rainfall gradients through a synthesis of forest-inventory plots from a network of 42 Neotropical forest chronosequences. During the first three decades of natural forest regeneration, legume basal area...

Data from: Niche conservatism and the invasive potential of the wild boar

Lilian Patricia Sales, Bruno R. Ribeiro, Matt Warrington Hayward, Adriano P. Paglia, Marcelo Passamani & Rafael Loyola
1.Niche conservatism, i.e. the retention of a species’ fundamental niche through evolutionary time, is cornerstone for biological invasion assessments. The fact that species tend to maintain their original climate niche allows predictive maps of invasion risk to anticipate potential invadable areas. Unraveling the mechanisms driving niche shifts can shed light on the management of invasive species. 2.Here, we assessed niche shifts in one of the world's worst invasive species: the wild boar Sus scrofa. We...

Data from: Y chromosome sequences reveal a short Beringian Standstill, rapid expansion, and early population structure of Native American founders

Thomaz Pinotti, Susana Revollo, Cézar Paz-Y-Miño, Ricardo Fujita, Fabrício Rodrigues Santos, Chris Tyler-Smith, Toomas Kivisild, Qasim Ayub, Anders Bergström, Yali Xue, Cinthia Cuellar, Dominique Ohasi, Daniela R. Lacerda, Marilza S. Jota, José E. Santos & Arne Solli
The Americas were the last inhabitable continents to be occupied by humans, with a growing multidisciplinary consensus for entry 15-25 thousand years ago (kya) from northeast Asia via the former Beringia land bridge. Autosomal DNA analyses have dated the separation of Native American ancestors from the Asian gene pool to 23 kya or later, and mtDNA analyses to ~25 kya, followed by isolation (‘Beringian Standstill’) for 2.4-9 ky and then a rapid expansion throughout the...

Data from: Beta diversity of aquatic invertebrates increases along an altitudinal gradient in a Neotropical mountain

Diego M.P. Castro, Marcos Callisto, Ricardo R. C. Solar, Diego R. Macedo & G. Wilson Fernandes.
Mountains harbor rich biodiversity and high levels of endemism, particularly due to changes in environmental conditions over short spatial distances, which affects species distribution and composition. Studies on mountain ecosystems are increasingly needed, as mountains are highly threatened despite providing ecosystem services, such as water supply for half of the human population. We aimed to understand the patterns and drivers of alpha and beta diversities of aquatic invertebrates in headwater streams along an altitudinal gradient...

Weather fluctuations are linked to nesting success and renesting decisions in saffron finches

Fernando Marques-Santos, Uschi Wischhoff & Marcos Rodrigues
Life‐histories of neotropical birds seem to vary beyond what is expected according to patterns from northern temperate regions. This variation is well exemplified by saffron finches Sicalis flaveola in subtropical Brazil. They breed for five months on a climate that is relatively warm and rainy throughout the year. Females may attempt from one nest with two eggs up to three nests with five eggs per season. Previous work showed that age and individual quality were...

Web wars: Males of the golden orb-web spider invest more in fights for mated and aggregated females

Amanda Vieira Da Silva, Reisla Oliveira & Paulo Enrique Cardoso Peixoto
In addition to resource value, the cost of finding mates may affect how much males invest in fights for females. The cost of finding females may be imposed through natural factors extrinsic to males, such as female spatial distribution and predation pressure, which can be challenging to simulate in laboratory conditions. Therefore, studies under natural conditions may be suitable for understanding how the costs of finding mating partners affect male investment in fights. We used...

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  • Universidade Federal de Minas Gerais
  • University of Sao Paulo
  • Federal University of Lavras
  • Universidade Estadual de Montes Claros
  • Universidade Federal de Goiás
  • Museu Paraense Emílio Goeldi
  • University of Cambridge
  • National Autonomous University of Mexico
  • State University of Feira de Santana
  • Plymouth University