A5005576543- Ecology and Vegetation Dynamics Studies
- Avian ecology and behavior
- Fish biology, ecology, and behavior
- Plant and animal studies
- Environmental and biological studies
- Species Distribution and Climate Change
- Wildlife-Road Interactions and Conservation
- Geography and Environmental Studies
- Wildlife Ecology and Conservation
- Plant Diversity and Evolution
- Amphibian and Reptile Biology
- Animal and Plant Science Education
- Evolution and Paleontology Studies
- Insect and Arachnid Ecology and Behavior
- Plant Parasitism and Resistance
- Fern and Epiphyte Biology
- Plant Taxonomy and Phylogenetics
- Animal Vocal Communication and Behavior
- Forest ecology and management
- Bat Biology and Ecology Studies
- Soil Management and Crop Yield
- Agricultural and Food Sciences
- Conservation, Biodiversity, and Resource Management
- Software-Defined Networks and 5G
- Genetic diversity and population structure
Pontifícia Universidade Católica de Minas Gerais
2015-2024
Amazon (United States)
2016
Universidade Federal de Minas Gerais
1998-2013
Universidade Estadual de Montes Claros
2003-2013
Military Institute of Engineering
2012
Abstract Aim The knowledge of biodiversity facets such as species composition, distribution and ecological niche is fundamental for the construction biogeographic hypotheses conservation strategies. However, on these affected by major shortfalls, which are even more pronounced in tropics. This study aims to evaluate effect sampling bias variation collection effort Linnean, Wallacean Hutchinsonian shortfalls diversity measures richness, endemism beta‐diversity. Location Brazil. Methods We...
Abstract Although Brazil is a megadiverse country and thus conservation priority, no study has yet quantified gaps in the Brazilian protected areas (PAs) using extensive empirical data. Here, we evaluate degree of biodiversity protection knowledge within all PAs through gap analysis vertebrate, arthropod angiosperm occurrences phylogenetic Our results show that on most remain scant as 71% have less than 0.01 species records per km 2 . Almost 55% about 40% evolutionary lineages are not found...
A new species of Campylopterus sabrewing is described from eastern Brazilian tropical dry forests occurring below 900 m asl. Its holotype (MZUSP 99024) an adult female Sítio Duboca (16°43’19’’S, 43°58’20’’W, elevation 840 m), municipality Montes Claros, state Minas Gerais. taxonomic revision based on more than 1,000 museum specimens revealed that the taxon, together with C. largipennis, diamantinensis and obscurus (with aequatorialis considered as a subjective junior synonym) should be...
(O que são campos rupestres e de altitude nos topos montanha do Leste Brasil?). Os os leste Brasil ocorrem nas partes mais elevadas da Cadeia Espinhaço, Serra Mantiqueira Mar. Uma vez há certa confusão sobre a caracterização limites geográficos destes dois tipos vegetação, o objetivo deste trabalho é apresentar uma síntese das opiniões tais ambientes campestres, discutindo história suas denominações, localização geográfica, aspectos fisionômicos afinidades biogeográficas. Embora apresentem...
Scientists have long been trying to understand why the Neotropical region holds highest diversity of birds on Earth. Recently, there has increased interest in morphological variation between and within species, how climate, topography, anthropogenic pressures may explain affect phenotypic variation. Because data are not always available for many species at local or regional scale, we limited our understanding intra- interspecies spatial Here, present ATLANTIC BIRD TRAITS, a set that includes...
Interactions between species are influenced by different ecological mechanisms, such as morphological matching, phenological overlap and abundances. How these mechanisms explain interaction frequencies across environmental gradients remains poorly understood. Consequently, we also know little about the that drive geographical patterns in network structure, complementary specialization modularity. Here, use data on morphologies, phenologies abundances to hummingbirds plants at a large scale....
Abstract Functional traits can determine pairwise species interactions, such as those between plants and pollinators. However, the effects of biogeography evolutionary history on trait‐matching trait‐mediated resource specialization remain poorly understood. We compiled a database 93 mutualistic hummingbird–plant networks (including 181 hummingbird 1,256 plant species), complemented by morphological measures bill floral corolla length. divided hummingbirds into their principal clades used...
Amazonian rivers are usually suggested as dispersal barriers, limiting biogeographic units. This is evident in a widely accepted Areas of Endemism (AoEs) hypothesis proposed for birds. We empirically test this based on quantitative analyses species distribution. compiled database bird and subspecies distribution records, used dataset to identify AoEs through three different methods. Our results show that the currently not consistent with areas identified, which were generally congruent among...
Abundant pollinators are often more generalised than rare pollinators. This could be because abundant species have chance encounters with potential interaction partners. On the other hand, a competitive advantage over specialists, leading to higher abundance. Determining direction of abundance–generalisation relationship is therefore ‘chicken‐and‐egg’ dilemma. Here we determine between abundance and generalisation in plant–hummingbird pollination networks across Americas. We find evidence...
Traditional conservation techniques for mapping highly biodiverse areas assume there to be satisfactory knowledge about the geographic distribution of biodiversity. There are, however, large gaps in biological sampling and hence shortfalls. This problem is even more pronounced tropics. Indeed, use only a few taxonomic groups or environmental surrogates modelling biodiversity not viable mega-diverse countries, such as Brazil. To overcome these limitations, we developed comprehensive spatial...
Montane open-habitats of southeastern Brazil are represented by the campos rupestres (principally in Espinhaço Range) and de altitude (in Serra do Mar da Mantiqueira). In spite occurrence endemic species both vegetation types, an analysis synthesis their bird communities have never been conducted. this paper, we present avifaunal survey these areas, describe patterns geographic distribution, comment on conservation those avifauna. A total 231 was recorded Brazilian mountaintops. rupestres,...
Scytalopus and the recently erected Eleoscytalopus are among Neotropical groups of birds whose taxonomy is most difficult to resolve given their very conservative morphology. We investigated phylogeny species limits eastern using two mitochondrial genes nuclear introns multiple individuals from all these groups. The separated in three well defined clades also supported by morphological or vocal characteristics, although relationships between could not be resolved. found several allopatric...
Abstract Functional traits determine interactions between plants and pollinators, to increase pollination efficiency, many have evolved attract specific pollinator groups. However, biogeographical setting may influence trait evolution biotic interactions. For instance, pollinated by hummingbirds often ornithophilous traits, that is, flowers with elongated corollas, dilute nectar red colours, but—due colonization history, depauperate biotas unstable environmental conditions—it might be...
Summary Populations of grassland birds are declining in Brazil due to profound alterations habitats. In this paper, we present recent records and range extensions for 12 threatened or little known Brazilian species: Ocellated Crake Micropygia schomburgkii , Sickle-winged Nightjar Eleothreptus anomalus Campo Miner Geositta poeciloptera Rufous-sided Pygmy-tyrant Euscarthmus rufomarginatus Sharp-tailed Grass-tyrant Culicivora caudacuta Cock-tailed Tyrant Alectrurus tricolor Cinereous...
É apresentada uma revisão histórica dos inventários ornitológicos conduzidos na Chapada Guimarães, centro-oeste do Brasil. A avifauna da região é caracterizada a partir de crítica todas as listas espécies produzidas por várias gerações ornitólogos, espécimes depositados em museus e meticulosos trabalhos campo. Especial atenção foi dada às publicações J.A. Allen, baseadas monumental coleção preparada H.H. Smith sua esposa no final século XIX. típica Cerrado, abrigando também amazônicas. Um...
Abstract In this study, we verified the power of DNA barcodes to discriminate Neotropical birds using Bayesian tree reconstructions a total 7404 COI sequences from 1521 species, including 55 Brazilian species with no previous barcode data. We found that 10.4% were nonmonophyletic, most likely due inaccurate taxonomy, incomplete lineage sorting or hybridization. At least 0.5% (2.5% sampled species) retrieved GenBank associated database errors (poor‐quality sequences, Nu MT s,...
Climate change affects biodiversity in various ways but not linearly. Mountaintop species and ecosystems are expected to experience the strongest impacts of climate change. Lower tolerances changes habitat decreased available surface area with increasing elevation should lead smaller ranges even extinctions endemic living on mountaintops. Thus, potential must be understood order achieve sound long-lasting conservation management We evaluated distribution status ten bird eastern Brazil...
We studied the distribution of birds along an altitudinal gradient ranging from 800 m to 1,400 on two slopes Serra do Cipó, Minas Gerais, southeastern Brazil. Ornithological surveys were conducted over transects covering open (cerrado, campo rupestre) and forested (gallery Atlantic forest) habitats 1994 2000. found 273 bird species belonging 51 families. Twenty-two restricted higher elevations 84 detected only one slope, depending vegetation type they inhabited. recorded 104 occurring both...