Produção Nacional
Revisado por pares
Claudinei Oliveira dos Santos, Vinícius Vieira Mesquita, Leandro Parente, Alexandre de Siqueira Pinto, Laerte Guimarães Ferreira,
Brazilian livestock is predominantly extensive, with approximately 90% of the production being sustained on pasture, which occupies around 20% of the territory. It is estimated that more than half of Brazilian pastures have some level of degradation. In this study, we mapped and evaluated the spatiotemporal dynamics of pasture quality in Brazil, between 2010 and 2018, considering three classes of degradation: Absent (D0), Intermediate (D1), and Severe (D2). There was no variation in the total area ...
Tópico(s): Soil erosion and sediment transport
2022 - Multidisciplinary Digital Publishing Institute | Remote Sensing
Produção Nacional
Revisado por pares
Beatriz Schwantes Marimon, Claudinei Oliveira‐Santos, Ben Hur Marimon, Fernando Elias, Edmar Almeida de Oliveira, Paulo S. Morandi, Nayane Cristina Candida dos S Prestes, Lucas H. Mariano, Oriales Rocha Pereira, Ted R. Feldpausch, Oliver L. Phillips,
The long-term dynamics of regeneration in tropical forests dominated by single tree species remains largely undocumented, yet is key to understanding the mechanisms by which one species can gain dominance and resist environmental change. We report here on the long-term regeneration dynamics in a monodominant stand of Brosimum rubescens Taub. (Moraceae) at the southern border of the Amazon forest. Here the climate has warmed and dried since the mid-1990′s. Twenty-one years of tree and liana regeneration ...
Tópico(s): Conservation, Biodiversity, and Resource Management
2020 - Springer Science+Business Media | Plant Ecology
Produção Nacional
Revisado por pares
Claudinei Oliveira Cruz, Edmo da Cunha Rodovalho,
Tailings dam safety is a frequent subject of discussion during mining project development. However, due to recent accidents with these structures, this issue has become even more prominent. A highlighted point is the risk management, which can be defined as the identification, analysis and maintenance of risks at acceptable levels during the design, construction and operation phases. Therefore, this article aims to present the direct application of ISO 31000: Risk Management applied to the safety ...
Tópico(s): Mining and Resource Management
2019 - Gorceix Foundation | REM - International Engineering Journal
Produção Nacional
Revisado por pares
Paulo M. Brando, Divino Vicente Silvério, Leonardo Maracahipes‐Santos, Claudinei Oliveira‐Santos, Shaun R. Levick, Michael T. Coe, Mirco Migliavacca, Jennifer K. Balch, Márcia N. Macedo, Daniel C. Nepstad, Leandro Maracahipes, Eric A. Davidson, Gregory P. Asner, Olaf Kolle, Susan Trumbore,
Abstract Drought, fire, and windstorms can interact to degrade tropical forests and the ecosystem services they provide, but how these forests recover after catastrophic disturbance events remains relatively unknown. Here, we analyze multi‐year measurements of vegetation dynamics and function (fluxes of CO 2 and H 2 O) in forests recovering from 7 years of controlled burns, followed by wind disturbance. Located in southeast Amazonia, the experimental forest consists of three 50‐ha plots burned annually, ...
Tópico(s): Forest ecology and management
2019 - Wiley | Global Change Biology
Produção Nacional
Revisado por pares
Luigi Conte, Maik Renner, Paulo M. Brando, Claudinei Oliveira dos Santos, Divino Vicente Silvério, Olaf Kolle, Susan Trumbore, Axel Kleidon,
Abstract To understand changes in land surface energy balance partitioning due to tropical deforestation, we use a physically based analytical formulation of the surface energy balance. Turbulent heat fluxes are constrained by the thermodynamic maximum power limit and a formulation for diurnal heat redistribution within the land‐atmosphere system. The derived turbulent fluxes of sensible and latent heat compare very well to in situ observations for sites with intact rainforest and soybean land cover ...
Tópico(s): Solar Radiation and Photovoltaics
2019 - American Geophysical Union | Geophysical Research Letters
Produção Nacional
Revisado por pares
Simone Matias Reis, Ben Hur Marimon, Paulo S. Morandi, Claudinei Oliveira‐Santos, Bianca de Oliveira, Beatriz Schwantes Marimon,
http://dx.doi.org/10.5902/1980509821061As florestas de galeria vêm sendo fragmentadas, levando à perda de sua elevada diversidade, tornando-se imprescindíveis estudos que avaliem o comportamento ecológico de suas espécies arbóreas. O presente estudo teve como objetivo testar a hipótese de que a produção de mudas de Copaifera langsdorffii é influenciada pela luminosidade do ambiente, apresentando maior qualidade e desenvolvimento inicial em níveis intermediários de luz. As plantas foram testadas ...
Tópico(s): Growth and nutrition in plants
2016 - UNIVERSIDADE FEDERAL DE SANTA MARIA | Ciência Florestal
Produção Nacional
Revisado por pares
Paulo S. Morandi, Beatriz Schwantes Marimon, Pedro V. Eisenlohr, Ben Hur Marimon, Claudinei Oliveira‐Santos, Ted R. Feldpausch, Edmar Almeida de Oliveira, Simone Matias Reis, Jon Lloyd, Oliver L. Phillips,
SUMMARY The loss of biodiversity in transitional forests between the Cerrado and Amazonia, the two largest neotropical phytogeographic domains, is an issue of great concern. This extensive region is located within the ‘arc of deforestation’ zone where tropical forests are being lost at the fastest rate on the planet, but floristic diversity and variation among forests here is still poorly understood. We aimed to characterize the floristic composition of forests in this zone and explored the degree ...
Tópico(s): Plant Diversity and Evolution
2016 - Cambridge University Press | Environmental Conservation
Produção Nacional
Revisado por pares
Jennifer K. Balch, Paulo M. Brando, Daniel C. Nepstad, Michael T. Coe, Divino Vicente Silvério, Tara Joy Massad, Eric A. Davidson, Paul A. Lefebvre, Claudinei Oliveira‐Santos, Wanderley Rocha, Roberta T. S. Cury, Amoreena L. Parsons, Karine S. Carvalho,
The interaction between droughts and land-use fires threaten the carbon stocks, climate regulatory functions, and biodiversity of Amazon forests, particularly in the southeast, where deforestation and land-use ignitions are high. Repeated, severe, or combined fires and droughts result in tropical forest degradation via nonlinear dynamics and may lead to an alternate vegetation state. Here, we discuss the major insights from the longest (more than 10 years) and largest (150-hectare) experimental burn ...
Tópico(s): Rangeland and Wildlife Management
2015 - Oxford University Press | BioScience
Produção Nacional
Revisado por pares
Beatriz Schwantes Marimon, Ben Hur Marimon, Ted R. Feldpausch, Claudinei Oliveira‐Santos, Henrique Augusto Mews, Gabriela López‐González, Jon Lloyd, Daniel David Franczak, Edmar Almeida de Oliveira, Leandro Maracahipes, A. Carretero Miguel, Eddie Lenza, Oliver L. Phillips,
Background: The zone of transition (ZOT) between the Cerrado and the Amazon forest in southern Amazonia represents a unique and rapidly shrinking area due to land-use change. Aims: To compare the dynamics and above-ground biomass of vegetation located in the ZOT with core Amazon forest and to determine how ZOT dynamics differ within vegetation types for different tree diameter classes. Methods: Censuses of trees were conducted in seven plots in monodominant forest, semi-deciduous seasonal forest, ...
Tópico(s): Plant Water Relations and Carbon Dynamics
2013 - Taylor & Francis | Plant Ecology & Diversity
Produção Nacional
Revisado por pares
Divino Vicente Silvério, Paulo M. Brando, Jennifer K. Balch, Francis E. Putz, Daniel C. Nepstad, Claudinei Oliveira‐Santos, Mercedes Bustamante,
Changes in climate and land use that interact synergistically to increase fire frequencies and intensities in tropical regions are predicted to drive forests to new grass-dominated stable states. To reveal the mechanisms for such a transition, we established 50 ha plots in a transitional forest in the southwestern Brazilian Amazon to different fire treatments (unburned, burned annually (B1yr) or at 3-year intervals (B3yr)). Over an 8-year period since the commencement of these treatments, we documented: ( ...
Tópico(s): Rangeland and Wildlife Management
2013 - Royal Society | Philosophical Transactions of the Royal Society B Biological Sciences
Produção Nacional
Revisado por pares
Beatriz Schwantes Marimon, Jeanine Maria Felfili, Christopher William Fagg, Ben Hur Marimon, Ricardo Keichi Umetsu, Claudinei Oliveira‐Santos, Paulo S. Morandi, Herson Souza Lima, André R. Terra Nascimento,
Abstract The study was conducted in a Brosimum rubescens Taub. monodominant forest in Nova Xavantina, Mato Grosso state (14°49.8′S and 52°9.6′W), in the transition zone between the Cerrado and Amazonian Forest in central Brazil. The structure and dynamics of the natural regeneration was compared over a five-year period to identify patterns that affect seedling establishment and explain the maintenance of B. rubescens dominance. We raised the following questions: how does the structure and dynamics ...
Tópico(s): Agroforestry and silvopastoral systems
2012 - Elsevier BV | Acta Oecologica
Produção Nacional
Revisado por pares
Edmar Almeida de Oliveira, Beatriz Schwantes Marimon, Ted R. Feldpausch, Guarino Rinaldi Colli, Ben Hur Marimon, Jon Lloyd, Eddie Lenza, Leandro Maracahipes, Claudinei Oliveira‐Santos, Oliver L. Phillips,
Background: Lianas strongly influence tropical forest dynamics and diversity. Aims: To determine the relationship among richness, diversity, abundance and distribution of liana species in different vegetation formation types along a gradient within a savanna–forest transition zone in central Brazil. Methods: All liana species were identified and their girth measurements (≥5 cm) taken in one 1 ha plot at each of 15 sites that encompassed a range of vegetation types: dystrophic cerradão (tall closed ...
Tópico(s): Ecology and Vegetation Dynamics Studies
2013 - Taylor & Francis | Plant Ecology & Diversity
Produção Nacional
Revisado por pares
Anderson Mathias Holtz, Hamilton Oliveira, Ângelo Pallini, Jeanne Scardini Marinho‐Prado, José Cola Zanúncio, Claudinei Lima Oliveira,
O sistema de defesa induzido de plantas é ativado quando herbívoros se alimentam das mesmas. Alternativamente, herbívoros podem se adaptar a espécies de plantas filogeneticamente próximas ao seu hospedeiro de origem. O objetivo deste trabalho foi comparar o desenvolvimento de Thyrinteina arnobia em plantas de goiaba (hospedeiro de origem) e de eucalipto (hospedeiro novo) em campo. Adicionalmente, estudou-se a biologia deste inseto em laboratório fornecendo folhas de eucalipto previamente danificadas ...
Tópico(s): Plant and animal studies
2003 - Embrapa Informação Tecnológica | Pesquisa Agropecuária Brasileira
Produção Nacional
Revisado por pares
Marcelo Scolari Gosch, Leandro Parente, Claudinei Oliveira dos Santos, Vinícius Vieira Mesquita, Laerte Guimarães Ferreira,
Pastures make up a large part of the agricultural land in Brazil and in the world. Specifically, this research aimed to understand how the pasture areas in the rural settlements in the State of Goiás (core region of the Cerrado biome) evolved, from their creation to present. For this purpose, quantitative and qualitative analyzes were carried out, based on the annual mapping of the Brazilian pasturelands (within the scope of the MapBiomas initiative), as well as on satellite images from the Landsat ...
Tópico(s): Agroforestry and silvopastoral systems
2021 - Elsevier BV | Applied Geography
Produção Nacional
Revisado por pares
Adenir Vieira Teodoro, Ângelo Pallini, Claudinei Lima Oliveira,
We used a Y-tube olfactometer to assess the sub-lethal effects of the acaricide fenbutatin oxide on the olfactory response of the predatory mite Iphiseiodes zuluagai towards odours from: (1) air or undamaged coffee plants; (2) undamaged or red spider mite Oligonychus ilicis-infested coffee plants; (3) undamaged or false spider mite Brevipalpus phoenicis-infested coffee plants. Predatory mite adult females were exposed to residues of fenbutatin oxide or distilled water on leaf discs during a period ...
Tópico(s): Insect Pheromone Research and Control
2008 - Springer Science+Business Media | Experimental and Applied Acarology
Produção Nacional
Revisado por pares
Renato Almeida Sarmento, Ângelo Pallini, Madelaine Venzon, Og Francisco Fonseca de Souza, Adrián José Molina-Rugama, Claudinei Lima Oliveira,
This work evaluated the functional response of adult females of Eriopis connexa to different densities of Macrosiphum euphorbiae and Tetranychus evansi. When preying upon aphids, E. connexa presented a sigmoidal functional response (Type III). This behavior, however, changed drastically to an exponential (Type II) functional response, when mites (T. evansi), rather than aphids, were offered to E. connexa. Such different patterns showed that this coccinellid needed to adopt distinct strategies according ...
Tópico(s): Biological Control of Invasive Species
2007 - Instituto de Tecnologia do Paraná (Tecpar) | Brazilian Archives of Biology and Technology
Produção Nacional
Revisado por pares
Sheila Abreu Mourão, Júlio C.T. Silva, R. N. C. Guedes, Madelaine Venzon, Gulab N. Jham, Claudinei Lima Oliveira, José Cola Zanuncio,
A toxicidade relativa dos extratos de folha, semente e óleo de torta de Azadirachta indica A. Juss (nim) ao ácaro predador Iphiseiodes zuluagai (Denmark & Muma) (Acari: Phytoseiidae) foi estudada em laboratório. Foram determinadas concentrações discriminatórias (CLs99) dos extratos de folha, semente e óleo de torta de nim para fêmeas adultas de Oligonychus ilicis (McGregor) (Acari: Tetranychidae), através de bioensaios de concentração-mortalidade. Arenas com 3,5 cm de diâmetro, confeccionadas com folhas ...
Tópico(s): Insect-Plant Interactions and Control
2004 - Springer Nature | Neotropical Entomology
Produção Nacional
Revisado por pares
Anderson Mathias Holtz, Hamilton Oliveira, Ângelo Pallini, Madelaine Venzon, José Cola Zanúncio, Claudinei Lima Oliveira, Jeanne Scardini Marinho‐Prado, Maria da Consolação Rosado,
As plantas podem desenvolver mecanismos de defesa que reduzem o efeito do ataque de herbívoros. Em resposta, os insetos herbívoros evoluem de forma a quebrar os mecanismos de defesa das plantas. Uma das formas que os insetos têm de escapar do sistema de defesa das plantas é migrar para outros hospedeiros cujo sistema de defesa não seja eficiente a seu ataque. No Brasil, em plantios de Eucalyptus spp., observam-se surtos freqüentes da lagarta desfolhadora Thyrinteina arnobia Stoll, cujo hospedeiro ...
Tópico(s): Biological Control of Invasive Species
2003 - Springer Nature | Neotropical Entomology
Produção Nacional
Revisado por pares
Maria Emília Schutesky Della Giustina, Claudinei Gouveia de Oliveira,
The Carajás Mineral Province, located in northern Brazil, comprises the oldest iron-oxide copper–gold mineralizing system on Earth and is one of the world's most significant cluster of large-tonnage IOCG deposits. Based on a critical assessment of the literature a new integrated model for the Carajás Neoarchean IOCG deposits. The model considers the hydrothermal alteration footprint and the rock textures, the geometry of the mineralization and the ore assemblage, and the isotopic and geochronological ...
Tópico(s): Geochemistry and Elemental Analysis
2020 - Elsevier BV | Ore Geology Reviews
Produção Nacional
Revisado por pares
Felipe Velásquez Ruiz, Maria Emília Schutesky Della Giustina, Claudinei Gouveia de Oliveira, Elton Luiz Dantas, Maria Helena Bezerra Maia de Hollanda,
The São Tomé mafic-ultramafic intrusion, located in the Borborema Province, NE Brazil, consists of a group of metamorphosed dismembered intrusive rocks, composed of ol-websterite and clinopyroxenite, which host stratiform meter-sized massive ilmenite-magnetite lenses with up to 1.98 wt% V2O3 in magnetite. The ol-websterite rocks display dark discontinuous olivine bands intercalated with cumulate augite, whereas the clinopyroxenite rocks are composed mainly of anhedral augite. The mineral chemistry ...
Tópico(s): Geochemistry and Elemental Analysis
2018 - Elsevier BV | Precambrian Research
Produção Nacional
Revisado por pares
Pedro Cordeiro, Claudinei Gouveia de Oliveira, Luiz N. Paniago, Glacir Romagna, Roberto Ventura Santos,
Morro Agudo is the largest known Mississippi-Valley Type deposit (MVT) in Brazil with original estimated reserves of 18.3 Mt @ 5.08% Zn and 1.75% Pb of which 3.92 [email protected] 4% Zn and 1.45% Pb remained in 2017. In spite of having been mined for more than 30 years, a comprehensive study of Morro Agudo metallogenic features was still lacking in the international literature. This deposit is hosted within the 250 km long Vazante Sequence, a N-S-trending Mesoproterozoic-Neoproterozoic carbonate-dominant ...
Tópico(s): earthquake and tectonic studies
2018 - Elsevier BV | Ore Geology Reviews
Produção Nacional
Revisado por pares
Pedro Cordeiro, Claudinei Gouveia de Oliveira,
The Goiás Massif is a collage of Archean-Paleoproterozoic terranes that crop out in the central Brazil Northern Brasília Belt and acted as the continental margin onto which Neoproterozoic Brasiliano orogenic events took place. Most belts in the massif formed from 2.2 to 2.0 Ga, a widespread age bracket in the São Francisco-Congo Craton, pericratonic areas and other terranes associated with the formation of the “Atlantica Supercontinent”. However, the genesis of the Goiás Massif has always been a ...
Tópico(s): earthquake and tectonic studies
2017 - Elsevier BV | Precambrian Research
Produção Nacional
Revisado por pares
César Ulisses Vieira Veríssimo, Roberto Ventura Santos, Clóvis Vaz Parente, Claudinei Gouveia de Oliveira, José Adilson Dias Cavalcanti, José de Araújo Nogueira Neto,
Abstract The Itataia phosphate-uranium deposit is located in Santa Quiteria, in central Ceara State, northeastern Brazil. Mineralization has occurred in different stages and involves quartz leaching (episyenitization), brecciation and microcrystalline phase formation of concretionary apatite. The last constitutes the main mineral of Itatiaia uranium ore, namely collophane. Collophanite ore occurs in massive bodies, lenses, breccia zones, veins or episyenite in marble layers, calc-silicate rocks and ...
Tópico(s): Geochemistry and Geologic Mapping
2016 - Elsevier BV | Journal of South American Earth Sciences
Produção Nacional
Revisado por pares
Claudinei Gouveia de Oliveira, Frederico Bedran Oliveira, Maria Emília Schutesky Della Giustina, Gustavo Campos Marques, Elton Luiz Dantas, Márcio Martins Pimentel, Bernhard Bühn,
The large Chapada Cu–Au deposit is situated in Goiás Magmatic Arc, Central Brazil, which is part of an accretionary orogen with tectonic evolution between ca. 900 and 600 Ma during the Brasiliano Orogeny. With a current reserve (proven and probable) of 420.94 Mt Cu (0.29%) and 479.84 Mt Au (0.25 g/t) or 3.83 Moz Au, the Chapada Cu–Au deposit is an important example of a large-tonnage, low-grade porphyry copper–gold deposit of Precambrian age, in which the mineralization is disseminated and hosted mainly ...
Tópico(s): earthquake and tectonic studies
2015 - Elsevier BV | Ore Geology Reviews
Produção Nacional
Revisado por pares
Isabela M. Cordeiro de Sousa, Maria Emília Schutesky Della Giustina, Claudinei Gouveia de Oliveira,
The Brasília thrust and fold belt developed in the course of Neoproterozoic Brasiliano orogeny, during the convergence of São Francisco, Amazonian and Paranapanema cratons, in an early phase of Gondwana agglutination. A Paleoproterozoic terrane cropping out in its northern segment represents the basement of the belt and corresponds to a magmatic arc. The arc developed during Rhyacian, possibly on the margin of an Archean-Paleoproterozoic block that is today represented by the São Francisco craton. ...
Tópico(s): earthquake and tectonic studies
2015 - Elsevier BV | Precambrian Research
Produção Nacional
Revisado por pares
Pedro Cordeiro, Claudinei Gouveia de Oliveira, Maria Emília Schutesky Della Giustina, Elton Luiz Dantas, Roberto Ventura Santos,
The Campinorte Arc is a poorly exposed 2.19–2.07 Ga Paleoproterozoic terrane in contact with the Neoproterozoic Goiás Magmatic Arc by the Rio dos Bois Fault in the northern Brasília Belt, Central Brazil. The Campinorte Arc is divided into Pau de Mel Suite metatonalites to metamonzogranites and the Campinorte volcano-sedimentary Sequence. Pau de Mel Suite whole rock geochemistry indicates at least three separate coeval parental magmas compatible with arc signatures. U–Pb geochronology data of paragranulite ...
Tópico(s): earthquake and tectonic studies
2014 - Elsevier BV | Precambrian Research
Produção Nacional
Revisado por pares
Guilherme dos Santos Teles, Farid Chemale, Claudinei Gouveia de Oliveira,
U–Pb and Lu–Hf isotope analyses were performed on detrital zircon grains from eight samples distributed along a 1000-m-thick section of the Au–U pyrite deposits of Jacobina to identify the primary source areas and define the maximum age for the basin sedimentation. These deposits contain detrital pyrite similar to that observed in the Witwatersrand gold province. Although the sequence was deformed by Paleoproterozoic orogeny, all of the detrital zircon grains (n = 785) yielded Paleoarchean ages between ...
Tópico(s): Geochemistry and Geologic Mapping
2014 - Elsevier BV | Precambrian Research
Produção Nacional
Revisado por pares
Roberto Ventura Santos, Claudinei Gouveia de Oliveira, Clóvis Vaz Parente, Maria da Glória Motta Garcia, Elton Luiz Dantas,
One of the most prominent geological structures in Borborema Province, northeast Brazil, is the Transbraziliano Lineament that crosscuts most of the South American Platform and was active at least until the Devonian. This continental structure is responsible for the formation of rift and pull-apart basins in Northeastern Brazil, most of which filled with volcanic and continental sedimentary rocks (Parente et al., 2004). In the region of Sobral, Ceará State, this same continental structure controlled ...
Tópico(s): Paleontology and Stratigraphy of Fossils
2013 - Elsevier BV | Journal of South American Earth Sciences
Produção Nacional
Revisado por pares
Bernhard Bühn, Roberto Ventura Santos, Marcel Auguste Dardenne, Claudinei Gouveia de Oliveira,
Mass-independent sulfur isotope fractionation (MIF) has been observed in rocks of the geological record older than about 2.45 Ga, a characteristic which is thought to be related to processes in the Neoarchean atmosphere. Samples recording a MIF effect therefore have to contain sulfur of the exogenic sulfur cycle, while endogenic sulfur should not show this effect. The sulfides analysed from six Brazilian deposits represent either exogenic or endogenic sulfur sources, with supposed ages ranging from ...
Tópico(s): Isotope Analysis in Ecology
2012 - Elsevier BV | Chemical Geology
Produção Nacional
Revisado por pares
Pedro Cordeiro, José Affonso Brod, Matheus Palmieri, Claudinei Gouveia de Oliveira, Elisa Soares Rocha Barbosa, Roberto Ventura Santos, José Carlos Gaspar, Luis Carlos de Assis,
The Catalão I alkaline–carbonatite–phoscorite complex contains both fresh rock and residual (weathering-related) niobium mineralization. The fresh rock niobium deposit consists of two plug-shaped orebodies named Mine II and East Area, respectively emplaced in carbonatite and phlogopitite. Together, these orebodies contain 29 Mt at 1.22 wt.% Nb2O5 (measured and indicated). In closer detail, the orebodies consist of dike swarms of pyrochlore-bearing, olivine-free phoscorite-series rocks (nelsonite) that ...
Tópico(s): earthquake and tectonic studies
2011 - Elsevier BV | Ore Geology Reviews