Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 290
Primeira ... 123456789 ... Última
Imagem não selecionada

Imprime registro no formato completo
Mappig and monitoring land degradation risks in the western Brazilian Amazon using multitemporal landsat TM/ETM + IMAGES. Repositório Alice
LU, D.; BATISTELLA, M.; MAUSEL, P.; MORAN, E..
Mapping and monitoring land degradation in areas under human-induced stresses have urgent tasks in remote sensing whose importance has not yet been fully appreciated. In this study, a surface cover index (SCI) is developed to evaluate and map potential land degradation risks associated with deforestation and accompanying soil erosion in a Western Brazilian Amazon rural settlement study area. The relationships between land-use and land-cover (LULC) types and land degradation risks as well as the impacts of LULC change on land degradation are examined. This research indicates that remotely sensed data can be effectively used for identification and mapping of land degradation risks and monitoring of land degradation changes in the study area. Sites covered by...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Land degradation risk; Surface cover index; Spectral mixture analysis; Landsat TM/ETM+; Amazon; Brazil.
Ano: 2007 URL: http://www.alice.cnptia.embrapa.br/handle/doc/17677
Imagem não selecionada

Imprime registro no formato completo
Propagação in vitro de sacaca (Croton cajucara Benth.): entendimentos sobre a diiculdade no desenvolvimento de protocolos de micropropagação da espécie. Repositório Alice
SILVA, T. L. da; PEREIRA, M. A. A.; SCHERWINSKI-PEREIRA, J. E..
2015
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Amazônia; Croton spp; Contaminação microbiana; Linalol; Organogênese; Amazon; Linalool; Microbial contamination; Organogenesis; Planta medicinal; Medicinal plant.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1037997
Imagem não selecionada

Imprime registro no formato completo
Orchid-bee fauna (Hymenoptera: Apidae: Euglossina) in two forest fragments in the state of Pará, Brazil. Repositório Alice
TANIGUCHI, M.; MAUES, M. M.; MOURA, T. do S. A. de..
2012
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Amazon; Habitat fragmentation; Apoidea; Pollination; Chemical baits.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/951570
Imagem não selecionada

Imprime registro no formato completo
Faunistic analysis of the species of Anastrepha Schiner (Diptera: Tephritidae) in three municipalities of the state of Roraima, Brazil. Repositório Alice
MARSARO JÚNIOR, A. L.; NASCIMENTO, D. B.; RONCHI-TELES, B.; ADAIME, R..
2012
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Brasil; Amazon; Diversity; Faunistic index; Fruit flies; Amazônia; Diversidade; Índice faunístico; Moscas-das-frutas.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/945681
Imagem não selecionada

Imprime registro no formato completo
Multi-functionality of Livestock, Always a Chance for Pioneers of Amazonia. Repositório Alice
BARBOSA, T.; PLASSIN, S.; CARVALHO S.; BENDAHAN, A. B.; POCCARD-CHAPUIS, R.; PIKETTY, M.; TOURRAND, J..
bitstream/item/177143/1/Bendahan.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Amazon.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1091657
Imagem não selecionada

Imprime registro no formato completo
Agriculture without burning: restoration of altered areas with chop-and-mulch sequential agroforestry systems in the Amazon region. Repositório Alice
SHIMIZU, M. K.; KATO, O. R.; FIGUEIREDO, R. de O.; VASCONCELOS, S. S.; SÁ, T. D. de A.; BORGES, A. C. M. R..
Traditional shifting cultivation in the Amazon region has caused negative environmental and social effects due to the use of fire. This type of agriculture has been criticized because it results in emission of large amounts of carbon into the atmosphere and a loss of soil productive potential. Since 1991, Project SHIFT-Tipitamba has researched this type of agriculture and, in a subsequent phase, attempted to propose solutions that could be adopted in northeastern Pará, a region of ancient colonization in Amazon and highly anthropized based on an exclusively slash-and-burn agricultural system for more than 100 years. This paper presents some results obtained over two decades of research on these agricultural systems and proposes a method for the recovery or...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Agricultura sem queima; Amazônia; Shift cultivation; Slash-and-burn; Derruba-e-queima; Amazon; Sistema agroflorestal; Tipitamba.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1003995
Imagem não selecionada

Imprime registro no formato completo
Diversity of parasites in wild Astronotus ocellatus (Perciformes, Cichlidae), an ornamental and food fish in Brazil. Repositório Alice
TAVARES-DIAS, M.; NEVES, L. R..
The community composition of parasites was characterized in Astronotus ocellatus from a tributary of the Amazon River, northern Brazil. The prevalence was 87.9%, and a total of 526,052 parasites were collected, with a mean of 15,941 parasites per host. Nine taxa of ecto- and endo-parasites were identified, but Ichthyophthirius multifiliis was the dominant species, while Piscinoodinium pillulare, Clinostomum marginatum and Argulus multicolor were the least prevalent parasites. The parasite community was characterized by a low species richness, low diversity and low evenness. Host body size was not found to influence the composition of the parasite community, and there was no significant correlation between abundance of any parasite species and host body...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Peixe de água doce; Acara-açu; Ectoparasita; Endoparasita; Astronotus ocellatus; Amazônia; Freshwater fish; Ectoparasite; Endoparasite; Amazon.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1080999
Imagem não selecionada

Imprime registro no formato completo
Tree diametric increment and litterfall production in an Eastern Amazonian Forest: the role of functional groups. Repositório Alice
CAMARGO, P.; FERREIRA, M.; OLIVEIRA JUNIOR, R.; SALESKA, S..
2014
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Diâmetro; Dinâmica; Árvore; Floresta; Amazônia; Amazon; Florest; Tree.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1003889
Imagem não selecionada

Imprime registro no formato completo
Species of Anastrepha (Diptera: Tephritidae), their host plants, and parasitoids in small fruit production areas in the State of Amapá, Brazil. Repositório Alice
LEMOS, L. do N.; DEUS, E. da G. de; NASCIMENTO, D. B.; JESUS-BARROS, C. R. de; COSTA-NETO, S. V. da; ADAIME, R..
Fruit flies and associated parasitoids were determined in native and introduced fruit species in the state of Amapá, Brazil. Fruits were collected every 30 d, from Jan to Dec 2012, on 3 small farms in the municipalities of Mazagão, Porto Grande, and Santana. We collected 412 samples (78 species of plants belonging to 32 families and consisting of 4,554 fruits weighing 323.4 kg) and obtained 5,252 Anastrepha (Diptera: Tephritidae) puparia from 107 infested samples (20 plant species from 13 botanical families). We report here the occurrence of 11 species of Anastrepha and 5 species of parasitoids (4 Braconidae and 1 Figitidae species; both families in the order Hymenoptera). New hosts for Anastrepha distincta Greene, Anastrepha leptozona Hendel, Anastrepha...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Host fruit; Amazon; Praga de planta; Mosca das frutas; Infestação; Hospedeiro; Plant pest; Fruit fly; Infestation.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1071587
Imagem não selecionada

Imprime registro no formato completo
Patógenos de algumas fruteiras nativas da Amazônia. Repositório Alice
GASPAROTTO, L.; LIMA, M. I. P. M.; SIVIERO, A..
Nos últimos anos, no estado do Amazonas, tem-se despertado o interesse para o cultivo de algumas fruteiras nativas. Com o adensamento das plantas para exploração comercial ou para atividades de pesquisa, começaram a surgir problemas relacionados à doenças.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Fruta tropical; Amazônia; Fruta; Doença de planta; Patógeno; Tropical and subtropical fruits; Plant diseases and disorders; Plant pathogens; Amazon; Frutas tropicales y subtropicales; Enfermedades y desórdenes de las plantas; Patógenos de plantas.
Ano: 1995 URL: http://www.alice.cnptia.embrapa.br/handle/doc/492072
Imagem não selecionada

Imprime registro no formato completo
Landscape change and Land-use/Land-Cover Dynamics in Rondônia, Brazilian Amazon. Repositório Alice
BATISTELLA, M..
Motivations for the study of landscape change in Rondônia, Brazilian Amazon; Environmental and cultural setting the opportunity for a comparative study; Vegetation structure as an indicator for Land-cover dynamics assessment in the Amazon; Lulc dynamics: the colonization impact; Landscape change described by selected metrics; Beyond the metrics: human dimensions of landscape change; Concluding remarks.
Tipo: Tese/dissertação (ALICE) Palavras-chave: Rondônia; Amazon; Dimensions of landscape; Machadinho Oeste; Vegetation; Landsat TM; Population; Geographic location; Clima; Soil; Fauna; Geology.
Ano: 2001 URL: http://www.alice.cnptia.embrapa.br/handle/doc/48784
Imagem não selecionada

Imprime registro no formato completo
Potential anti-allergic action of three medicinal plants used in Amazon region: Effects on histamine release. Repositório Alice
OLIVEIRA, D. M. de; DI STASI, L. C.; PARACAMPO, N. E. N. P.; LAMEIRA, O. A.; CRESPO-LOPEZ, M. E..
2014
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Planta medicinal; Anti-alergico; Histamina; Amazônia; Medicinal plants; Anti-allergic; Histamine; Amazon.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1004794
Imagem não selecionada

Imprime registro no formato completo
Ectoparasites and endoparasites community of Ageneiosus ucayalensis (Siluriformes: Auchenipteridae), catfish from Amazon River system in northern Brazil. Repositório Alice
FERREIRA, D. de O.; TAVARES-DIAS, M..
This study investigated the community of ectoparasites and endoparasites in Ageneiosus ucayalensis (Auchenipteridae) of a tributary from the Amazon River system, in Northern Brazil. Of 34 fish examined, 100% were parasitized by Ichthyophthirius multifiliis, Cosmetocleithrum bulbocirrus, Demidospermus sp., metacercariae of Genarchella genarchella, Clinostomum marginatum and Herpetodiplostomum sp., Procamallanus (Spirocamallanus) belenensis, Cucullanus ageneiosus and larvae of Contracaecum sp. digeneans C. marginatum and Herpetodiplostomum sp. were dominant parasite species, while I. multifiliis was the parasite with higher infection level. Such parasite species showed an aggregated dispersion, except P. (S.) belenensis, which showed a random dispersion. The...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Diversidade; Diversity; Amazon; Peixe de água doce; Parasito de animal; Helminto; Freshwater fish; Animal parasite; Helminths.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1074260
Imagem não selecionada

Imprime registro no formato completo
Extrativismo vegetal ou plantio: qual a opção para a Amazônia? Repositório Alice
HOMMA, A. K. O..
O crescimento do mercado de produtos extrativos tem conduzido a domesticação de plantas e a descoberta de substitutos sintéticos. Outras variáveis como o crescimento populacional, a mudança nos preços relativos, a baixa produtividade da terra e da mão de obra da atividade extrativa conflitam com o aumento dos níveis salariais afetando a sustentabilidade em médio e longo prazos. A criação de mercados verdes e de certificação pode prolongar a existência da economia extrativa, mas fatalmente terá dificuldades de sua manutenção no longo prazo, com o crescimento do mercado. A insistência na manutenção do extrativismo leva a prejuízos para os produtores e consumidores.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Extrativismo vegetal; Amazônia; Teoria extrativa; Desenvolvimento rural; Plant extractivism; Amazon; Extractive theory; Rural development.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/950867
Imagem não selecionada

Imprime registro no formato completo
Development of microsatellite markers for Carapa guianensis (Aublet), a tree species from the Amazon forest. Repositório Alice
VINSON, C. C.; AZEVEDO, V. C. R.; SAMPAIO, I.; CIAMPI, A. Y..
bitstream/item/178080/1/ID-27807-1.pdf
Tipo: Nota Técnica/Nota Científica (ALICE) Palavras-chave: Amazon; Microsatellites; Tropical tree; Microsatélite; Árvore tropical; Andiroba; Carapa Guianensis; Amazonia.
Ano: 2005 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/188246
Imagem não selecionada

Imprime registro no formato completo
Irradiance and water deficit effects on gas exchange behavior of two C3 Amazonian weeds. Repositório Alice
DIAS-FILHO, M. B.; WISE, J. A.; DAWSON, T. E..
The gas exchange behavior or two perennial weed species, a vine Ipomoea asarifolia (Desr.) Roem. & Schultz and a shrub Stachytarpheta cayennensis (L.C. Rich) Vahl., both common in the Brazilian Amazonia, was compared for plants grown under well watered and water limited conditions. Under well-watered conditions, light saturated rates of photosynthesis (A) and stomatal conductance (g) in I. asarifolia were, respectively, 15 and 83% higher than in S. cayennensis. When water stress was imposed, A and g in I. asarifolia declined, respectively, by 29 and 57% in relation to S. cayennensis. Dark respiration and light compensation point were similar on well-watered plants. Under water limited conditions, S. cayennensis had 60% higher dark respiration and 35%...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Amazon; Ipomoea asarifolia; Photosynthesis; Stomatal conductance; Stachytarpheta cayennensis; Water stress; Tropical pasture..
Ano: 1995 URL: http://www.alice.cnptia.embrapa.br/handle/doc/907160
Imagem não selecionada

Imprime registro no formato completo
Correlation but no causation between leaf nitrogen and maximum assimilation: the role of drought and reproduction in gas exchange in an understory tropical plant Miconia ciliata (Melastomataceae). Repositório Alice
ARAGÃO, D. V.; FORTINI, L. B.; MULKEY, S. S.; ZARIN, D. J.; ARAUJO, M. M.; CARVALHO, C. J. R. de..
Alternative hypotheses were tested to explain a previously reported anomaly in the response of leaf photosynthetic capacity at light saturation (A..) in Miconia ciliata to dry-season irrigation. The anomaly is characterized by an abrupt increase in leaf A._ for nonirrigated plants at the onset of the rainy season to values that significantly exceeded corresponding measurements for plants that were irrigated during the previous dry season. Hypothesis I posits that a pulse in leaf nitrogen increases CO2 assimilation in nonirrigated plants at the onset of the wet season and is dampened for irrigated plants; this hypothesis was rejected because, although a wet-season nitrogen pulse did occur, it was identical for both irrigated and nonirrigated plants and was...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Amazon; Compensatory photosynthesis; Drought seasonality; Nitrogen content; Reprodutive phenology; Secondary forest.
Ano: 2005 URL: http://www.alice.cnptia.embrapa.br/handle/doc/578363
Imagem não selecionada

Imprime registro no formato completo
Seasonal pattern in parasite infracommunities of Hoplerythrinus unitaeniatus and Hoplias malabaricus (Actinopterygii: Erythrinidae) from the Brazilian Amazon. Repositório Alice
GONÇALVES, R. A.; OLIVEIRA, M. S. B.; NEVES, L. R.; TAVARES-DIAS, M..
The present study investigated the effects of seasonal variation in parasites infracommunities of Hoplerythrinus unitaeniatus and Hoplias malabaricus from a tributary of Amazon River. For H. unitaeniatus and H. malabaricus, 11 parasite species were similar, and greatest parasite richness occurred during the rainy season. Ichthyophthirius multifiliis was the dominant parasite species for both hosts. In H. unitaeniatus, infection by Whittingtonocotyle caetei, Whittingtonocotyle jeju, Urocleidoides sp. and Anacanthorus sp. was higher during rainy season. Contracaecum sp., Procamallanus (Spirocamallanus) inopinatus, Nomimoscolex matogrossensis and Gorytocephalus spectabilis showed no seasonal pattern. For H. unitaeniatus, P. pillulare, Clinostomum marginatum...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Animal parasite; Seasonal variation; Amazônia; Amazon; Parasito de animal; Variação sazonal.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1043200
Imagem não selecionada

Imprime registro no formato completo
Lidar-based assessment of forest edge effects across a degraded landscape in the Brazilian Amazon. Repositório Alice
SANTOS, M. N. dos; PINAGÉ, E. R.; LONGO, M.; ARAUJO, L. S. de; ADAMI, M.; MORTON, D.; KELLER, M..
Forest fragmentation divides forest areas into smaller discontinuous fragments, increasing the forest edge area that experiences different environmental conditions from interior areas [1]. According to one study, logging and deforestation generate ~32,000 and 38,000 km of new forest edge each year in the Brazilian Amazon [2]. Nearly 20% of the world?s forests are within 100m of agriculture, urban, or other non-forest land uses [3]. Forest edges suffer changes in microclimate, with reduced moisture and increased variability of temperature compared to the forest interiors. In addition, winds cause greater structural damage near the forest ends and affect other ecological processes such as pollination, seed dispersal, nutrient cycling and carbon storage. The...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Edge effect; Forest degradation; Airborne lidar; Amazon.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1034397
Imagem não selecionada

Imprime registro no formato completo
Tissue Culture Techniques for Native Amazonian Fruit Trees. Repositório Alice
PASQUAL, M.; CHAGAS, E. A.; SOARES, J. D. R.; RODRIGUES, F. A..
2012
Tipo: Capítulo em livro científico (ALICE) Palavras-chave: Fruits; Amazon.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/953549
Registros recuperados: 290
Primeira ... 123456789 ... 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