24 Works

LT-Brazil: A database of leaf traits across biomes and vegetation types in Brazil

Eduardo Mariano, Taciana Gomes, Silvia Lins, Adibe Abdalla-Filho, Amin Soltangheisi, Maria Araújo, Rodrigo Almeida, Fernanda Augusto, Luiza Canisares, Siglea Chaves, Cristiane Costa, Thaís Diniz-Reis, Leonardo Galera, Melissa Martinez, Maristela Morais, Elen Perez, Lucas Reis, Carla Simon, Silvia Mardegan, Tomas Domingues, Raquel Miatto, Rafael Oliveira, Carla Reis, Gabriela Nardoto, Jens Kattge … & Luiz Martinelli
Motivation: Leaf traits represent an important component of plant functional strategies, and those related to carbon fixation and nutrient acquisition form the leaf economics spectrum. However, observations of functional leaf traits are underrepresented in tropical regions in comparison with those in temperate areas. Brazil, a country with continental scale and vast biodiversity is a timely example, where many biomes are impacted by human activities and climate change. However, leaf traits relevant to understand vegetation responses...

Data from: The evolution of polymorphism in the warning coloration of the Amazonian poison frog Adelphobates galactonotus

Diana Rojas, Paolo Momigliano, Albertina Pimentel Lima, Pedro Ivo Simões, Rachel Y. Dudaniec, Teresa C. S. Avila-Pires, Marinus S. Hoogmoed, Youszef O. C. Bitar, Igor Luis Kaefer, Adolfo Amézquita & Adam Stow
While intraspecific variation in aposematic signals can be selected for by different predatory responses, their evolution is also contingent on other processes shaping genetic variation. We evaluate the relative contributions of selection, geographic isolation and random genetic drift to the evolution of aposematic color polymorphism in the poison frog Adelphobates galactonotus, distributed throughout eastern Brazilian Amazonia. Dorsal coloration was measured for 111 individuals and genetic data were obtained from 220 individuals at two mitochondrial genes...

Warming of aquatic ecosystems disrupts aquatic-terrestrial linkages in the tropics

Liam Nash, Pablo Antiqueira, Gustavo Romero, Paula De Omena & Pavel Kratina
Aquatic ecosystems are tightly linked to terrestrial ecosystems by exchanges of resources, which influence species interactions, community dynamics and functioning in both ecosystem types. However, our understanding of how this coupling responds to climate warming is restricted to temperate, boreal, and arctic regions, with limited knowledge from tropical ecosystems. We investigated how warming aquatic ecosystems impacts cross-ecosystem exchanges in the tropics, through the export of aquatic resources into the terrestrial environment and the breakdown of...

Data from: Recent chapters of Neotropical history overlooked in phylogeography: shallow divergence explains phenotype and genotype uncoupling in Antilophia manakins

Fábio Raposo Do Amaral, Marcos M. Coelho, Alexandre Aleixo, Leilton W. Luna, Péricles S. Do Rêgo, Thainara O. Souza, Weber A.G. Silva & Gregory Thom
Establishing links between phenotypic and genotypic variation is a central goal of evolutionary biology, as they might provide important insights into evolutionary processes shaping genetic and species diversity in nature. One of the more intriguing possibilities is when no genetic divergence is found to be associated with conspicuous phenotypic divergence. In that case, speciation theory predicts that phenotypic divergence may still occur in the presence of significant gene flow—thereby resulting in little genomic divergence—when genetic...

Vídeo nas Aldeias, autoetnografia e as raízes antropológicas no cinema

Sávio Stoco & Ricardo Agum Ribeiro

Who knows, who cares? Untangling ecological knowledge and nature connection among Amazonian colonist farmers

Katarzyna Mikolajczak, Alexander Lees, Jos Barlow, Frazer Sinclair, Oriana Trindade De Almeida, Agnis Souza & Luke Parry
Conservationists often assume that connection with and caring about nature’s wellbeing is strongly linked to ecological knowledge. Existing evidence on the link between ecological knowledge and psychological nature connection is mixed, geographically limited to countries in the Global North, and does not scrutinize potential differences in determinants of ecological knowledge and nature connection. We investigate the relationship between psychological nature connection and ecological knowledge of local bird species and assess their associations with potential drivers,...

Tropical mammal functional diversity increases with productivity but decreases with anthropogenic disturbance

Daniel Gorczynski, Chia Hsieh, Jadelys Tonos Luciano, Jorge Ahumada, Santiago Espinosa, Steig Johnson, Francesco Rovero, Fernanda Santos, Mahandry Hugues Andrianarisoa, Johanna Hurtado Astaiza, Patrick A. Jansen, Charles Kayijamahe, Marcela Guimarães Moreira Lima, Julia Salvador & Lydia Beaudrot
A variety of factors can affect the biodiversity of tropical mammal communities, but their relative importance and directionality remain uncertain. Previous global investigations of mammal functional diversity have relied on range maps instead of observational data to determine community composition. We test the effects of species pools, habitat heterogeneity, primary productivity and human disturbance on the functional diversity (dispersion and richness) of mammal communities using the largest standardized tropical forest camera trap monitoring system, the...

The response of carbon assimilation and storage to long-term drought in tropical trees is dependent on light availability

Lucy Rowland, Antonio Da Costa, Rafael Oliveira, Paulo Bittencourt, André Giles, Ingrid Coughlin, David Bartholomew, Tomas Ferreira Domingues, Raquel Miatto, Leandro Ferreira, Steel Vasconcelos, Joao Junior, Alex Oliveira, Maurizio Mencuccini & Patrick Meir
1) Whether tropical trees acclimate to long-term drought stress remains unclear. This uncertainty is amplified if drought stress is accompanied by changes in other drivers such as the increases in canopy light exposure that might be induced by tree mortality or other disturbances. 2) Photosynthetic capacity, leaf respiration, non-structural carbohydrate (NSC) storage and stomatal conductance were measured on 162 trees at the world’s longest running (15 yr) tropical forest drought experiment. We test whether surviving...

Temporal changes in the potential geographic distribution of Histiotus velatus (Chiroptera, Vespertilionidae), the “decade effect\"

Liriann Chrisley Da Silva, Rafaela Almeida, Pablo Henrique Da Silva, Monik Oprea, Poliana Mendes, Daniel Brito & Thiago Vieira
Also investigate how the potential distribution of this species changes with the addition of new records over the decades (decade effect). Assuming that (1: hypothesis of the effect of the decade) the addition of new occurrence records over time increases the potential size of the species distribution; and (2: Wallacean distance hypothesis) over the years, the new points added are increasingly distant from the research centers. Considering the geographic knowledge gap of Histiotu velatus, our...

Data from: Environmental drivers of soil phosphorus composition in natural ecosystems

Leonardo Deiss, Anibal De Moraes & Vincent Maire
Abstract. Soil organic and inorganic phosphorus (P) compounds can be influenced by distinctive environmental properties. This study aims to analyze soil P composition in natural ecosystems, relating organic (inositol hexakisphosphate, DNA and phosphonates) and inorganic (orthophosphate, polyphosphate and pyrophosphate) compounds with major temporal (weathering), edaphic and climatic characteristics. A dataset including 88 sites was assembled from published papers that determined soil P composition using one-dimensional liquid state 31P nuclear magnetic resonance spectroscopy of NaOH-EDTA extracts...

Data from: The new Andean jumping spider genus Urupuyu and its placement within a revised classification of the Amycoida (Araneae: Salticidae)

Gustavo R.S. Ruiz & Wayne P. Maddison
Urupuyu gen. nov. is described for three new species of small black jumping spiders from the cloud forests of Ecuador: Urupuyu antisana sp. nov. (type species), U. edwardsi sp. nov., and U. occidentale sp. nov. Phylogenetic analyses with DNA sequences (28S, actin 5C, wingless, 16SND1 and CO1) indicate Urupuyu is closely related to the huriine amycoids Hurius and Scoturius, a placement also supported by morphological traits. Our phylogenetic analysis serves to clarify the relationships within...

Traits data from trees exposed to a 50% reduction in canopy throughfall for 14 years in Caxiuanã, Brazil, September to October 2016

L. Rowland, R.S. Oliveira, P.R.L. Bittencourt, A.L. Giles, I. Coughlin, P. De Britto Costa, T. Domingues, L.V. Ferreira, S.S. Vasconcelos, J.A.S. Junior, A.A.R. Oliveira, A.C.L. Da Costa, P. Meir & M. Mencuccini
Data comprise tree trait data collected during September and October 2016 (the peak dry season), in the Caxiuanã National Forest Reserve, eastern Amazon, Brazil. 17 traits (including plot type, tree species name, diameter at breast height, tree light score, carboxylation capacity, electron transport capacity, leaf respiration in the dark, stomatal conductance, stem CO2 efflux, leaf mass per area, leaf nitrogen and phosphorus content, branch wood density, leaf water potential, xylem pressure, lumen conductance, percentage loss...

Data from: Molecular data and distribution dynamics indicate a recent and incomplete separation of manakins species of the genus Antilophia (Aves: Pipridae) in response to Holocene climate change

Leilton Willians Luna, Thainara Oliveira Souza, Linconl Silva Carneiro, Weber A. De Girão E Silva, Horacio Schneider, Iracilda Sampaio, Juliana Araripe & Péricles Seno Do Rêgo
To determine a hypothetical scenario that accounts for the diversification of the two species of the genus Antilophia, we conducted multilocus molecular comparisons and species distribution modeling for the two taxa, which have distinct male plumage coloration patterns and allopatric geographic distributions, despite the high degree of genetic similarity indicated by recent studies. Three mitochondrial and three nuclear fragments were analyzed. The results indicate clear differences in the genetic diversity of the two species, but...

Data from: Pleistocene niche stability and lineage diversification in the subtropical spider Araneus omnicolor (Araneidae)

Elen A. Peres, Thadeu Sobral-Souza, Manolo F. Perez, Isabel A. S. Bonatelli, Daniel P. Silva, Marcio J. Silva & Vera N. Solferini
The influence of Quaternary climate oscillations on the diversification of the South American fauna is being increasingly explored. However, most of these studies have focused on taxa that are endemic to tropical environments, and relatively few have treated organisms restricted to subtropical biomes. Here we used an integrative phylogeographical framework to investigate the effects of these climate events on the ecological niche and genetic patterns of the subtropical orb-weaver spider Araneus omnicolor (Araneidae). We analyzed...

Data from: Color discrimination in the tufted capuchin monkey, Sapajus spp.

Paulo Roney Kilpp Goulart, Daniela Maria Oliveira Bonci, Olavo De Faria Galvão, Luiz Carlos De Lima Silveira & Dora Fix Ventura
The present study evaluated the efficacy of an adapted version of the Mollon-Reffin test for the behavioral investigation of color vision in capuchin monkeys. Ten tufted capuchin monkeys (Sapajus spp., formerly referred to as Cebus apella) had their DNA analyzed and were characterized as the following: one trichromat female, seven deuteranope dichromats (six males and one female), and two protanope males, one of which was identified as an “ML protanope.” For their behavioral characterization, all...

Data from: \"De novo transcriptome assembly of the mountain fly Drosophila nigrosparsa using short RNA-seq reads\" in Genomic Resources Notes Accepted 1 August 2014-30 September 2014

Wolfgang Arthofer, Francesco Cicconardi, Nicola Palmieri, Viola Nolte, Christian Schlötterer, Birgit C. Schlick-Steiner, Florian M. Steiner, Marcelo Vallinoto, David A. Weese, B. L. Banbury, R. B. Harris, David S. Kang, Cheolho Sim, Thomas F. Duda, A. D. Leaché, Miguel Carneiro, Coralie Nourisson & Fernando Sequeira
Drosophila (Drosophila) nigrosparsa is a habitat specialist restricted to the European montane/alpine zone (Bächli 2008). Mountain biodiversity is considered highly vulnerable to ongoing climate warming (IPCC 2013), and organisms at high altitudes have only limited possibility to shift to cooler habitats at elevations above (Pertoldi & Bach 2007). For such species, rapid evolution may offer a solution for long-term survival. We are establishing D. nigrosparsa as a model system to test the extent and tempo...

Data from: Testing main Amazonian rivers as barriers across time and space within widespread taxa

Renata Pirani, Fernanda Werneck, Andréa Thomaz, Mariah Kenney, Marcelo Sturaro, Teresa Cristina Avila-Pires, Pedro Peloso, Miguel Rodrigues & L. Lacey Knowles
Aim: Present Amazonian diversity patterns can result from many different mechanisms and, consequently, the factors contributing to divergence across regions and/or taxa may differ. Nevertheless, the river-barrier hypothesis (RBH) is still widely invoked as a causal process in divergence of Amazonian species. Here we use model-based phylogeographic analyses to test the extent to which major Amazonian rivers act similarly as barriers across time and space in two broadly distributed Amazonian taxa. Local: Amazon rainforest. Taxon:...

Data from: Linking Avicennia germinans (Acanthaceae) architecture to gall richness and abundance in Brazilian Amazon mangroves

Luzinete L. Silva, Rita C. O. Santos & Marcus E. B. Fernandes
The diversity and abundance of gall-inducing organisms are directly proportional to the structural complexity of the host plant. This hypothesis is controversial for forest environments, such as mangroves. Avicennia germinans (L.), a principal mangrove tree species found in the Neotropical region, is considered to be a superhost for gall-inducing insects. Using a Generalized Linear Mixed Model (GLMM) based on the analysis of 1000 apical branches from 50 A. germinans trees, we examined the diversity and...

Data from: Sequestration and biosynthesis of cyanogenic glucosides in passion vine butterflies and consequences for the diversification of their host plants

Érika C. Pinheiro De Castro, Mika Zagrobelny, Juan Pablo Zurano, Márcio Zikan Cardoso, René Feyereisen & Søren Bak
The colorful heliconiine butterflies are distasteful to predators due to their content of defense compounds called cyanogenic glucosides (CNglcs), which they biosynthesize from aliphatic amino acids. Heliconiine larvae feed exclusively on Passiflora plants where ~30 kinds of CNglcs have been reported. Among them, some CNglcs derived from cyclopentenyl glycine can be sequestered by some Heliconius species. In order to understand the evolution of biosynthesis and sequestration of CNglcs in these butterflies and its consequences for...

Vellozioid roots allow for habitat specialisation among rock- and soil-dwelling Velloziaceae in campos rupestres

Anna Abrahão, Patrícia De Britto Costa, Grazielle Sales Teodoro, Hans Lambers, Diego L. Nascimento, Sara A. L. De Andrade, Megan H. Ryan & Rafael S. Oliveira
1. Plant growth on harsh substrates (habitat specialisation) requires specific traits to cope with stressful conditions. 2. We tested whether traits related to nutrient acquisition (root colonisation by fungal symbionts, and plant morphological and physiological specialisations), and nutrient use (leaf nitrogen (N) and phosphorus (P) concentrations and N- and P-remobilisation efficiency), were related to habitat specialisation for 27 species of Velloziaceae growing either in soil or on rocks in extremely P-impoverished campos rupestres habitats. If...

Elements of fish metacommunity structure in Neotropical freshwater streams

Thiago Bernardi Vieira, Leandro Schlemmer Brasil, Liriann Chrisley Nascimento Da Silva, Francisco Leonardo Tejerina Garro, Pedro De Podestà Uchôa De Aquino, Paulo Santos Pompeu & Paulo De Marco
The identification of the mechanisms underlying co-occurrence patterns of species is a way to identify which processes (niche, neutral or both) structure metacommunities. In this paper, our goals are to identify patterns of co-occurrence in neotropical stream fish and determine which processes structure the metacommunity and the gradients that underlie this structure. Our results pointed out that the metacommunity formed by the total pool of species is structured by a nested pattern (Hyperdispersed Species Loss)...

Has a river dam affected the life-history traits of a freshwater prawn?

Gicelle Maria Farias Silva, Marcelo Andrade, Breno Silva, Ingrid Palheta, Liziane Gonçalves, Rossineide Rocha & Maria Auxiliadora Ferreira
In recent years, species richness and diversity in aquatic ecosystems has declined as environments are increasingly impacted by anthropic actions. Freshwater prawns are among the aquatic organisms most capable to survive in a heterogeneous environment. Due to factors such as the distance from an estuary or dam, Macrobrachium amazonicum populations in rivers do not show amphidromy. So, the present study investigated the influence of environmental conditions on life-history traits of the Amazon river prawn, M....

eDNA in a bottleneck: obstacles to fish metabarcoding studies in megadiverse freshwater systems

Jake Jackman, Chiara Benvenuto, Ilaria Coscia, Cintia Carvalho, Jonathan Ready, Jean Boubli, William Magnusson, Allan McDevitt & Naiara Sales
The current capacity of environmental DNA (eDNA) to provide accurate insights into the biodiversity of megadiverse regions (e.g., the Neotropics) requires further evaluation to ensure its reliability for long-term monitoring. In this study, we first evaluated the taxonomic resolution capabilities of a short fragment from the 12S rRNA gene widely used in fish eDNA metabarcoding studies, and then compared eDNA metabarcoding data from water samples with traditional sampling using nets. For the taxonomic discriminatory power...

Novel insights into habitat suitability for Amazonian freshwater mussels linked with hydraulic and landscape drivers

Diego Simeone, Claudia Helena Tagliaro & Colin Robert Beasley
Novel insights into habitat suitability for two Unionida freshwater mussels, Castalia ambigua Lamarck, 1819 (Hyriidae) and Anodontites elongatus (Swainson, 1823) (Mycetopodidae), is presented on the basis of hydraulic variables linked with the riverbed in six 500 m reaches in an eastern Amazonian river basin. Within the reaches, there was strong habitat heterogeneity in hydrodynamics and substrate composition. In addition, we investigated stressors based on landscape modification that are associated with declines in mussel density. We...

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