Arielli F. Machado

Arielli F. Machado
Universidade Federal do Pampa (Unipampa) | UNIPAMPA · Campus São Gabriel

Phd
Postdoc at the Paleobiology lab, Universidade Federal do Pampa (Unipampa)

About

12
Publications
3,207
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79
Citations
Introduction
I'm a biologist and ecologist. My researches focus on the use of space by multiple species through time, biogeography, effects of climatic changes, evolutionary ecology and, conservation.
Additional affiliations
March 2013 - August 2015
Instituto Nacional de Pesquisas da Amazônia
Position
  • Master's Student
Description
  • I developed a research on phylogeographic patterns of a rodent, carrying out genetic sampling, phylogenetic, phylogeographic and ecological analyzes to test hypotheses of diversification widely discussed to explain diversity in the Amazon and Neotropics.

Publications

Publications (12)
Research
Full-text available
New record of Red Side-necked Turtle Rhinemys rufipes, the first record in the Urubu River region, 200 km east of the nearest previous known record in Manaus and 150 km west of Igarapé Açu
Preprint
Full-text available
Context Waterfalls and rapids of Amazon basin have been suggested as causing the speciation and genetic structure of many freshwater species, including turtles. The species behavior affects the way waterfalls and rapids limit gene flow. The Yellow-spotted River Turtle ( Podocnemis unifilis ), a widely distributed and endangered Amazonian turtle, do...
Article
Full-text available
Much evidence suggests that Amazonia and the Atlantic Forest were connected through at least three dispersion routes in the past: the Eastern route, the central route, and the Western route. However, few studies have assessed the use of these routes based on multiple species. Here we present a compilation of mammal species that potentially have dis...
Article
Full-text available
The Neotropics is one of the most diverse regions of the globe in terms of plants and animal species. Regarding the microbial world, however, little is known about the diversity and biogeography patterns of microorganisms in the Neotropics. The biogeography of several microbial taxonomic groups is still missing and/or incomplete, such as the protis...
Preprint
Full-text available
Here we identify potential mammal species useful for investigating the past connections between Amazonia and the Atlantic Forest through geographical distribution patterns, habitat preference, and availability of genetic data. Furthermore, we aim to identify the potential connective routes previously proposed. We believe that our results may serve...
Preprint
Full-text available
The Neotropical region is one of the most diverse regions of the globe in terms of macro-organismic species. Regarding the microbial world, however, little is known about the diversity and biogeography patterns of micro-organisms in the Neotropics. In this context, the study of several microbial taxonomic groups is still missing and/or incomplete,...
Article
Full-text available
Movements under environmental structures and on supports, and the use of shelters by Akodon montensis were assessed using the spool-and-line technique. Movements of a few individuals of Thaptomys nigrita , Brucepattersonius iheringi and Oligoryzomys nigripes were also assessed and briefly described. Akodon montensis often used fallen logs, lianas a...
Article
Full-text available
Several hypotheses have been used to explain diversification in the Neotropics. Integrating evolution with ecology extends the scope of testing the frameworks of these hypotheses. We test diversification hypotheses by integrating phylogeography and ecological niche models (ENMs) using the rodent Hylaeamys megacephalus (Azara’s broad-headed oryzomys...
Article
Full-text available
Didelphis aurita and D. albiventris are widely distributed in South America, with a range of sympatry in the limit of their distribution, particularly in Araucaria mixed ombrophilous forest in the southern Atlantic Forest. We investigated the spatial, feeding, and time use between these morphologically similar species in a remnant of Araucaria fore...
Article
Full-text available
We investigated how the small-mammal community is structured in a deciduous forest in southern Brazil, analysing the patterns of vertical and horizontal distribution. We used 12 transect lines, with 180 live-traps distributed on the ground and in the understory, and 12 pitfall traps in total. During six field sessions, we captured 510 individuals b...
Article
We investigated how the small-mammal community is structured in a deciduous forest in southern Brazil, analysing the patterns of vertical and horizontal distribution. We used 12 transect lines, with 180 live-traps distributed on the ground and in the understory, and 12 pitfall traps in total. During six field sessions, we captured 510 individuals b...

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Projects

Projects (2)
Project
This project aims to develop and apply innovative ecological research across multiple ecological scales (individuals within populations, populations within communities, communities within ecoregions or biomes), integrating micro- and/or macroevolutionary and ecological (phenotypic traits, environmental gradients) dimensions of biodiversity, which ultimately determine coexistence patterns for different biological groups. The project has the following goals: 1) to propose new analytical tools that allow discriminating multiple interplays between evolutionary process, phenotypic trait patterns and environmental gradients for co-occurring species pools; 2) to generate theoretical and empirical knowledge on the influence of evolutionary processes on spatial distribution patterns of individuals within populations, populations within communities, and communities within ecoregions/biomes, and to what extent those patterns correlate to biogeographical factors and current environmental gradients, and 3) to evaluate patterns of evolution of ecological traits in different biological groups and their relationships with dispersal capacity and habitat use.