Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 30
Primeira ... 12 ... Última
Imagem não selecionada

Imprime registro no formato completo
A new species of Bruggmanniella (Diptera, Cecidomyiidae, Asphondyliini) associated with Doliocarpus dentatus (Dilleniaceae) in Brazil Rev. Bras. entomol.
Maia,Valéria Cid; Fernandes,G. Wilson; Oliveira,Lázaro A..
Bruggmanniella doliocarpi, a new galling species associated with Doliocarpus dentatus (Dilleniaceae) is described and illustrated (male, female, pupa, larva and gall) based on material from Minas Gerais, Brazil. The new species is compared to the other known Neotropical species. This is the first report of Bruggmanniella for Minas Gerais and in association with Dilleniaceae.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian savanna; Gall midge; Neotropical; Taxonomy.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000200004
Imagem não selecionada

Imprime registro no formato completo
A new synonym and seventeen new distributional records in South American Cerambycidae (Coleoptera), with notes on Chlorethe scabrosa Zajciw, 1963 Pap. Avulsos de Zool. (São Paulo)
Santos-Silva,Antonio; Botero,Juan Pablo; Nascimento,Francisco Eriberto de Lima; Silva,Weliton Dias.
Abstract We studied 18 cerambycid beetle species native to South America. Seventeen represent new state records in Brazil. Particularly, Chlorethe scabrosaZajciw, 1963 is newly reported for the state of Rio de Janeiro with exclusion of C. brachypteraZajciw, 1963. The Brazilian state of the type locality of Dufauxia guaicurana Lane, 1955 is fixed. Pirangoclytus mendosus (Galileo & Martins, 1996) is synonymized with P. mniszechii (Chevrolat, 1862), and its holotype is a female. Variation on Trypanidius maculatus Monné & Delfino, 1980 is commented. New country and department records for Paraguay are also provided.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian savanna; Longhorned beetles; Paraguay; Semiochemical traps; Taxonomy.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492020000100210
Imagem não selecionada

Imprime registro no formato completo
CO2 emission and its relation to soil temperature, moisture, and O2 absorption in the reforested areas of Cerrado biome, Central Brazil. Repositório Alice
VICENTINI, M. E.; PINOTTI, C. R.; HIRAI, W. Y.; MORAES, M. L. T.; MONTANARI, R.; TEIXEIRA FILHO, M. C. M.; MILORI, D. M. B. P.; LA SCALA JUNIOR, N.; PANOSSO, A. R..
bitstream/item/202299/1/P-CO2-emission-and-its-relation-to-soil-temperature-moisture-....pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Soil metabolism; Brazilian savanna; Carbon loss.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112461
Imagem não selecionada

Imprime registro no formato completo
Distribution of the spittlebug Deois flavopicta Stal (Homoptera: Cercopidae) on wild and cultivated host species Anais da SEB
Pires,Carmen S. S.; Price,Peter W.; Oliveira,Regina C. de.
Eleven species of native or naturalized grasses were found hosting spittlebug nymphs in the natural grassland areas around Brasília in the Fe-deral District of Brazil. A large number of nymphs were found on the species Axonopus marginatus (Trin.) Chase. Out of a total of 224 observed nymphs, 85.7% were found feeding on A. marginatus. Apparently the presence of the spittlebug nymphs in the cerrado vegetation, the Brazilian savanna, was associated with any form of disturbance, such as cattle grazing and partial deforestation. Nymphs were found only in disturbed areas of the "cerrado campo sujo" and in the cerrado sensu strictu. The densities of spittlebug nymphs in the cerrado were lower than the density found in the cultivated pasture. The nymphal density...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Nymphal density; Brazilian savanna; Brachiaria spp.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80592000000300003
Imagem não selecionada

Imprime registro no formato completo
Drosophilids (Insecta, Diptera) of the Paranã Valley: eight new records for the Cerrado biome Biota Neotropica
Mata,Renata Alves da; Roque,Francisco; Tidon,Rosana.
The Paranã Valley, located in the Central Brazil Plateau, within the domain of the Cerrado biome, is frequently cited as a center of endemism and diversity. Nonetheless, this region is poorly known, mainly considering its invertebrate fauna. Here, drosophilid flies were used as biological tools to contribute to a broader inventory, whose goals were mapping the Cerrado biodiversity and identifying areas to be conserved. Three previously unsampled areas in the Paranã Valley were sampled. Amongst the 12,297 specimens collected 45 species were identified, which represents 50% of the drosophilid species previously recorded in the Cerrado. Moreover, this sampling presented eight new occurrences for the biome (Drosophila annulosa, D. calloptera, D. papei, D....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biodiversity; Brazilian savanna; Central Brazil Plateau; Conservation; Drosophila; Inventory.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032008000100006
Imagem não selecionada

Imprime registro no formato completo
Floristic and phytosociological analysis of palm swamps in the central part of the Brazilian savanna Acta Botanica
Resende,Isa Lucia de Morais; Chaves,Lázaro José; Rizzo,José Ângelo.
We analyzed the floristics and phytosociology of three palm swamps in the municipality of Bela Vista de Goiás, located in the state of Goiás, Brazil, in the central part of the Brazilian savanna (Cerrado). The floristic surveys were conducted monthly from May 2008 to April 2009, and 310 species were recorded (seven bryophytes, 15 ferns and 288 angiosperms). Bryophytes belonged to five genera and five families; ferns belonged to nine genera and nine families; and angiosperms belonged to 134 genera and 45 families. The angiosperm families with the highest species richness were Poaceae, Cyperaceae, Asteraceae, Eriocaulaceae, Xyridaceae, Lentibulariaceae, Melastomataceae, Rubiaceae and Fabaceae. The palm swamps were divided into three zones of increasing...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Wetlands; Brazilian savanna; Plant diversity.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100020
Imagem não selecionada

Imprime registro no formato completo
Fruits of Butia capitata (Mart.) Becc as good sources of β -carotene and provitamina Rev. Bras. Frutic.
Faria,Juliana Pereira; Siqueira,Egle M. A; Vieira,Roberto Fontes; Agostini-Costa,Tânia da Silveira.
Butia capitata is a palm tree, widely found in the Brazilian savanna. Their fruits are largely used by local communities to prepare juices, jellies and ice-creams. The main objective of this work was to determine the carotenoids profile of Butia capitata fruits and their provitamin A values. Total carotenoids content ranged from 11.1 to 43.9 μg.g-1; β-carotene was the predominant carotenoid (5.2-22.8 μg.g-1), followed by γ-carotene, phytoene, phytofluene, ζ-carotene, α-cryptoxanthin (or zeinoxanthin) and α-carotene. Provitamin A values varied from 50 to 200 RAE.100g-1. This result suggests that B. capitata pulp may be a good source of β-carotene and provitamin A.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian savanna; Palm tree; Carotenoid.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000500084
Imagem não selecionada

Imprime registro no formato completo
How do males of Hypsiboas goianus (Hylidae: Anura) respond to conspecific acoustic stimuli? Rev. Bras. Zool.
Morais,Alessandro R.; Siqueira,Mariana N.; Bastos,Rogério P..
ABSTRACT Acoustic communication plays an important role in the social behavior of anurans. Acoustic signals, which can be used in different contexts such as mate attraction and territory defense, may mediate social interactions among individuals. Herein, we used playback experiments to test whether males of Hypsiboas goianus (Lutz, 1968) change their vocal behavior in response to conspecific advertisement calls. Specifically, we used different field playback experiments in which we modified the time interval between advertisement calls to simulate males with distinct states of motivation (Sequence A and B). We did not observe differences in the acoustic response of males of H. goianus between the two types of field playback experiments. On the other hand,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anuran; Aggressive behavior; Brazilian savanna; Vocalizations.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000600431
Imagem não selecionada

Imprime registro no formato completo
Indicadores ecológicos: ferramentas para o monitoramento do processo de restauração ecológica. Infoteca-e
LIMA, P. A. F.; PACHÊCO, B. S.; SOUSA, S. R. de; GATTO, A.; AQUINO, F. de G.; ALBUQUERQUE, L. B. de.
2015
Tipo: Documentos (INFOTECA-E) Palavras-chave: Meio ambiente; Biodiversidade; Restauração ecológica; Indicadores ecológicos; Monitoramento ambiental; Brazilian savanna; Restoration of degraded areas; Biodiversity; Environment; Ecological restoration; Ecological indicators; Environmental monitoring.
Ano: 2015 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/1040917
Imagem não selecionada

Imprime registro no formato completo
Leaf heliotropism in Styrax camporum Pohl from the Brazilian cerrado: distinct gas exchange and leaf structure, but similar leaf temperature and water relations Braz. J. Plant Physiol.
Habermann,Gustavo; Machado,Silvia R.; Guimarães,Vandeir F.; Rodrigues,João D..
Styrax camporum is a common shrub species from the cerrado regions of São Paulo State, Brazil. Although its leaves do not have a morphologically delimited pulvinus, the apical leaves are oriented parallel to the sun (paraheliotropic leaves), most notably around noon. Horizontal leaves at the base of shoots are oriented perpendicular to the sun's rays (diaheliotropic leaves). The ecophysiological significance of this is not fully understood. We investigated how paraheliotropism influences daily CO2 assimilation (A) and other gas exchange rates, water relations, leaf temperature (Tl), and how these relate to leaf structure as assessed by anatomical leaf descriptions. Paraheliotropic leaves had greater A and stomatal conductance (g s), which led to greater...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian savanna; Ecophysiology; Gas exchange; Leaf movements; Leaf temperature; Photosynthesis; Styracaceae.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202008000100008
Imagem não selecionada

Imprime registro no formato completo
Mammals of the Bodoquena Mountains, southwestern Brazil: an ecological and conservation analysis Zoologia
Cáceres,Nilton C.; Bornschein,Marcos R.; Lopes,Wellington H.; Percequillo,Alexandre R..
We carried out a mammalian survey in the neighborhoods of the Serra da Bodoquena National Park, Mato Grosso do Sul state, a region poorly known in southwestern Brazil. During the months of April, May and July 2002 we used wire live trap, direct observation, indirect evidence (e.g. tracks), carcasses, and interviews with local residents to record mammalian species. Fifty six mammal species were recorded, including threatened species (14%). These records were discussed regarding species abundance, distribution, range extension, habitat, and conservation. The geographic distribution and ecology of the poorly known marsupials Thylamys macrurus and Micoureus constantiae in Brazil are emphasized.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian savanna; Deciduous forest; Distribution; Mammalia; Species richness.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000200021
Imagem não selecionada

Imprime registro no formato completo
New species in Diplusodon (Lythraceae) from Brazil. Repositório Alice
CAVALCANTI, T. B..
bitstream/item/138729/1/Diplusodon-novos-2015.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Brazilian savanna; Cerrado biome; Endemism.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1036601
Imagem não selecionada

Imprime registro no formato completo
Patterns of growth, development and herbivory of Palicourea rigida are affected more by sun/shade conditions than by Cerrado phytophysiognomy Acta Botanica
Moura,Renan Fernandes; Alves-Silva,Estevão; Del-Claro,Kleber.
ABSTRACT Plant development is influenced by several abiotic factors, which in turn influence morphological traits and life history. We investigated whether leaf area, herbivory, toughness, fluctuating asymmetry, structural complexity and the number of inflorescences of Palicourea rigida are influenced by sun/shade conditions or by Cerrado phytophysiognomy (typical cerrado or rupestrian field). We expected to find greater structural complexity, leaf toughness and more inflorescences in sun plants; shaded plants were expected to exhibit a greater degree of fluctuating asymmetry (an index of plant stress), reduced leaf toughness and greater herbivory. As for phytophysiognomies, we expected to find higher levels of leaf toughness and reduced structural...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian savanna; Environmental stress; Fluctuating asymmetry; Leaf area loss; Rubiaceae; Rupestrian grassland.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200286
Imagem não selecionada

Imprime registro no formato completo
Pedology and plant physiognomies in the cerrado, Brazil Anais da ABC (AABC)
NERI,ANDREZA V.; SCHAEFER,CARLOS E.G.R.; SOUZA,AGOSTINHO L.; FERREIRA-JUNIOR,WALNIR G.; MEIRA-NETO,JOÃO A.A..
This study was carried out in Paraopeba National Reserve. It aims to classify and evaluate the soil of the studied area and to verify the influence of soil attributes on vegetation by testing the following hypotheses: 1) under woodland physiognomies (Cerradão) the soil fertility is higher and the Al content lower; 2) open savanna occurs only in areas with high Al contents. For this purpose, representative soils in the Paraopeba National Reserve were mapped, identified, and samples from five profiles were analyzed. The environmental gradient was easily observed by principal components analyses, where the differences between the sites were highlighted. The Spearman correlation was used to verify the hypothesis. The correlation between vegetation (basal area,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aluminum tolerance; Brazilian savanna; Edaphic features; Soil fertility; Soil-vegetation gradient.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100087
Imagem não selecionada

Imprime registro no formato completo
Producao de sementes de Stylosanthes macrocephala cv. Pioneiro. Infoteca-e
ANDRADE, R.P. de..
1993
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Cerrado; Producao; Semente; Stylosanthes macrocephala cultivar Pioneiro; Seed production; Varieties; Brazilian savanna; Feed grasses; Gramínea forrageira.
Ano: 1993 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/548616
Imagem não selecionada

Imprime registro no formato completo
Reproductive behavior of Leptodactylus mystacinus (Anura, Leptodactylidae) with notes on courtship call of other Leptodactylus species Iheringia, Sér. Zool.
Oliveira Filho,Júlio C. de; Giaretta,Ariovaldo A..
Here we present data on the reproductive behavior of Leptodactylus mystacinus (Burmeister, 1861), including details on courtship behavior. We also describe and compared the courtship calls of L. mystacinus, L. furnarius Sazima & Bokermann, 1978 and Leptodactylus sp. (L. aff. andreae). Field works were conducted in Uberlândia (central Brazil). During courtship, a female approaches a calling male and is led to a previously excavated chamber; a female can approach a silent male that beat his hands and/or feet on the ground as well. The courtship call of L. mystacinus consists of one single arch-shaped note (duration = 0.04 s) repeated 258 times per minute; the courtship calls of L. furnarius (0.06 s, 84 times per minute) and Leptodactylus sp. (0.15 s,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian savanna; Foam nests; Territoriality; Vocalization; Parental care.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000400015
Imagem não selecionada

Imprime registro no formato completo
Role of soil carbon in the landscape functioning of the Alto São Bartolomeu watershed in the Cerrado region, Brazil PAB
Alves,Ray Pinheiro; Couto Junior,Antonio Felipe; Martins,Eder de Souza; Nardoto,Gabriela Bielefeld.
Abstract The objective of this work was to evaluate the effect of soil carbon on landscape functioning of the Oxisols covering the plateaus of the Alto São Bartolomeu watershed, in the Cerrado (Brazilian savanna) region of Central Brazil. Soil organic carbon (SOC) concentration, carbon stocks, and some soil physical and chemical characteristics were determined at the 0-0.20-m depth on native and anthropogenic areas. Soils from cerrado stricto sensu patches were similar both physically and chemically, being affected by exchangeable Al3+ and by SOC concentrations, while anthropogenic matrices were affected by soil bulk density, pH, extractable P, and exchangeable Ca2+ and Mg2+. The estimate of spatial distribution of soil carbon better fitted had an adjusted...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian savanna; No-tillage; Oxisol; Pasture; Pedotransfer function; Vegetation indices.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901241
Imagem não selecionada

Imprime registro no formato completo
Savanna woodland soil micromorphology related to water retention Scientia Agricola
Juhász,Carlos Eduardo Pinto; Cooper,Miguel; Cursi,Patrícia Ribeiro; Ketzer,André Oppitz; Toma,Raul Shiso.
The limiting factors of the Brazilian savanna physical environment have been largely discussed. Soil morphology is fundamental to understand the behavior of soil water flow, soil physical properties and soil-landscape relationships. The aim of this study is to relate soil micro and macromorphologic attributes to soil water retention on a toposequence under native savanna woodland (cerradão) in a permanent plot of 320 m <FONT FACE=Symbol>´</FONT> 320 m installed in Assis, SP, Brazil. Samples collected at five points within the toposequence were used to determine the soil macroporosity by means of image analyses, estimated total porosity, chemical analysis, particle size distribution analysis and soil water retention. From the summit down to the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian savanna; Soil porosity; Soil water flow; Soil physical quality; Toposequence.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400005
Imagem não selecionada

Imprime registro no formato completo
Sentinels in Saltator atricollis (Passeriformes: Emberizidae) BJB
RAGUSA-NETTO,J..
I studied the existence of sentinels in Saltator atricollis in a 'campo-cerrado' (Brazilian savanna) during the breeding seasons of 1994-95 and 1995-96. Groups of this species consisted of two to seven birds (N = 25). Sentinels were present (mean ± sd) 62% ± 9% of the time, and most sentinel bouts lasted from less than one to six minutes (although in some occasions for more than 30 min.). Overlap of two or more sentinels occurred on average only 3.2% of the time with birds on guard. Sentinels commonly gave contact calls in the beginning and/or at the end of a sentinel bout. The group size had no effect on time with sentinels. However the encounter rate between raptors and groups significantly influenced the time guarded. The results of this study suggests...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Emberizidae; Brazilian savanna; Raptors; Alertness; Sentinels.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082001000200015
Imagem não selecionada

Imprime registro no formato completo
Solos areno-quartzosos no cerrado: caracteristicas, problemas e limitacoes ao uso. Infoteca-e
SPERA, S.T.; REATTO, A.; MARTINS, E. de S.; CORREIA, J.R.; CUNHA, T.J.F..
A expansao da agricultura no Cerrado levou a ocupacao de areas de ocorrencia de Areias Quartzosas. Esses solos apresentam textura arenosa (85% ou mais de fracao areia). Areias Quartzosas ou Neossolos Quartzarenicos representam 15% da area do cerrado. Sao solos cuja estrutura e formada basicamente de graos de quartzo, sendo portanto altamente suscetiveis a erosao, apresentam drenagem excessiva, baixa retencao de agua e lixiviacao de nutrientes. Quimicamente sao pobres em bases trocaveis, alicos e a capacidade de troca cationica desses solos depende quase que exclusivamente da materia organica. Os solos arenosos sao formados de rochas areniticas ou quartziticas. A fracao argila e dominada por quatzo e caulinita. Por serem solos com baixa capacidade de...
Tipo: Documentos (INFOTECA-E) Palavras-chave: Cerrado; Arenossolo; Arenosols; Aptidão Agrícola; Areia Quartzosa; Arenoso; Brasil; Brazil; Brazilian savanna; Land; Land capability; Lande use; Quartzipsamment; Reconhecimento do solo; Sandy soil; Savanna; Soil; Soil surveys; Solo; Solo arenoso; Terra; Use; Uso; Uso da terra.
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/555305
Registros recuperados: 30
Primeira ... 12 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional