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| Registros recuperados: 47 | |
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| Cruz,Ana Paula Araújo da; Dórea,Marcos da Costa; Lima,Luciene Cristina Lima e. |
| The aim of this study was to identify, by sediment pollen analysis, the plant species used as floral resources for the provisioning of brood cells in Centris (Hemisiella) tarsata, in an area of Caatinga, within the municipality of Nova Soure, Bahia State, Brazil. The analysis of pollen contents from three brood cells revealed 11 pollen types, corresponding to four botanical families. Malpighiaceae was represented most, followed by Leguminosae, Ochnaceae, and Solanaceae, the latter two represented by just a single pollen type each. On the basis of the percentages in the samples, it was possible to infer that C. tarsata visited distinct plants, but intensified its pollen collection in species related to Aeschynomene martii and Solanum paniculatumpollen... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Entomopalynology; Floral resources; Semi-arid; Solitary bees; Trap nests. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000200282 |
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| Silva,Joan Bruno; Germano,Shirley Rangel. |
| In the state of Paraíba, Brazil, there is an abundance of rocky outcrops, which are typical elements of the semi-arid landscape. Those outcrops provide refuge to species with morphological adaptations to stressful climates and to rare communities of plants, including bryophytes. Nevertheless, there have been no studies of bryophytes in such habitats in the state. Therefore, this work aimed to inventory bryophytes on two outcrops in the municipality of Puxinanã, in Paraíba, addressing some of the ecological aspects of survival in xerophytic environments. Samples were collected once every two weeks from February 2010 to May 2011. The usual techniques of bryophyte sampling and herbarium preservation were employed. We recorded 21 bryophyte species (six... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bryophyte; Inselberg; Morphological adaptations; Nonvascular flora; Semi-arid; Northeastern Brazil. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400023 |
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| Medeiros, Erika Valente de; UFRPE; Martins, Claudia Miranda; UFC; Lima, José Arcanjo Melo; UFERSA; Fernandes, Ykesaky Terson Dantas; UFERSA; Oliveira, Vianney Reinaldo de; UFERSA; Borges, Wardsson Lustrino; UFRRJ. |
| Em função das características nutricionais e de rusticidade, o feijão-caupi tornou-se importante fonte de proteína na Região Nordeste do Brasil. O caupi se beneficia da fixação biológica de nitrogênio e pode receber parte do nitrogênio necessário para a cultura via simbiose, o que reduz os custos de produção. Um experimento em condições de casa-de-vegetação foi conduzido com o objetivo de avaliar a diversidade de isolados de rizóbio de nódulos de caupi em solos do Estado do Rio Grande do Norte. Os nódulos foram coletados de raízes de Vigna unguiculata (L.) Walp., utilizada como planta-isca, sendo obtidos 304 isolados com características típicas de rizóbio. Embora todos os isolados tenham apresentado crescimento rápido e ácido em meio de cultivo, os... |
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Palavras-chave: 5.01.00.00-9 Agronomia fixação biológica de nitrogênio; Vigna unguiculata; Semi-árido biological nitrogen fixation; Vigna unguiculata; Semi-arid. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/793 |
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| Nóbrega, Giovanna Henriques da; UFCG; Silva, Aderbal Marcos de Azevêdo; UFCG; Pereira Filho, José Morais; UFCG; Azevedo, Solange Absalão; UFCG; Silva, Guilherme de Lira Sobral; UFCG; Alcalde, Claudete Regina; UEM. |
| Este trabalho teve como objetivo estimar a composição corporal e exigências nutricionais em macrominerais para ganho de peso de cabritos ½ Boer ½ SRD, na fase de crescimento, em pastejo na região semiárida. O experimento foi desenvolvido na fazenda ‘Nupeárido’, no município de Patos, Estado da Paraíba. Foram utilizados 24 cabritos com peso corporal médio inicial de 15 kg, em pastejo, distribuídos em quatro tratamentos com níveis crescentes de suplementação concentrada (0; 0,5; 1,0 e 1,5% do peso corporal). Os animais, mantidos em sistema de semiconfinamento, receberam suplementação alimentar, em baias individuais, ao serem recolhidos diariamente. Quando um dos animais de cada grupo atingia 30 kg de peso corporal, todos os demais... |
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Palavras-chave: 5.04.00.00-2 Zootecnia cabritos; Cálcio; Fósforo; Potássio; Sódio; Semiárido Exigências Nutricionais dos Animais kid goats; Calcium; Phosphorus; Potassium; Sodium; Semi-arid. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/4797 |
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| Moura, José Fábio Paulino; UFPB; Pimenta Filho, Edgard Cavalcanti; CCA/UFPB; Gonzaga Neto, Severino; CCA/UFPB; Menezes, Marcos Paulo Carrera; CCHSA/UFPB; Leite, Saulo Vilarim de Farias; EMEPA/PB; Guilhermino, Magda Maria; DA/UFRN. |
| Objetivou-se, com o presente estudo, caracterizar os sistemas de produção de leite bovino no Cariri da Paraíba, utilizando análise de componentes principais e de agrupamento por Cluster. Foi selecionada uma amostra de 100 produtores rurais nos municípios de Caturité e Barra de Santana para aplicação de um questionário que foi composto por variáveis quantitativas, subdivididas em cinco conjuntos, totalizando 16 perguntas. Os quatro primeiros componentes principais explicaram 75,56% da variação total. Verificou-se a formação de três grupos quanto às variáveis estudadas. Os grupos I, II e III foram compostos por 9, 28 e 63 produtores, respectivamente. A maioria das propriedades do grupo I está localizada no município de Caturité, Estado da Paraíba. O tipo de... |
| Tipo: Pesquisa de Campo |
Palavras-chave: 5.04.05.00-4 componente principal; Cooperativa; Semiárido Produção Animal main component; Co-operative society; Semi-arid. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/7123 |
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| TOMAR, ARVIND SINGH. |
| In this study, performance of three forms of Valiantzas ET0 equations namely, (i) requiring full meteorological dataset, (ii) not requiring wind speed data, and (iii) not requiring both wind speed & relative humidity data for Indian semi-arid Hissar and Parbhani districts in comparison to widely accepted FAO-56 PM model was evaluated in terms of different statistical indices and their ranking based on GPI values. All Valiantzas ET0 equations requiring full meteorological dataset under-estimated FAO56-PM estimates in the range of 9.10 to 21.84% at Hissar while they over-estimated it in the range of 0.98 to 8.32% at Parbhani district. Valiantzas equations not requiring wind speed data under-estimated FAO56-PM ET0 values in the range of 3.90 to 34.56%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Valiantzas equations; Reference evapotranspiration; Semi-arid; Hissar; Parbhani; India. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6651 |
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| Nascimento,Diego S.; Valasques Junior,Gildomar; Fernandes,Pedro; Ribeiro,Geise C.A.; Lima,Danyo M.; Góes-Neto,Aristóteles; Oliveira,Rodrigo Q.; Figueiredo-Ribeiro,Rita de Cassia L.; Assis,Sandra A. de. |
| Inulinase (β-2,1-D- fructan fructanohydrolase), EC 3.2.1.7, targets the β-2,1 linkage of inulin, a polyfructan consisting of linear β-2,1 linked fructose, and hydrolyzes it into fructose. This use provides an alternative to produce fructose syrup through the hydrolysis of inulin. The objective of this work was to study the production, characterization and applications of inulinases from the fungal endophyte CCMB 328 isolated from the Brazilian semi-arid region. Response Surface Methodology (RSM) was employed to evaluate the effect of variables (concentration of glucose and yeast extract), on secreted inulinase activities detected in the culture medium and also in the inulin hydrolysis. The results showed that the best conditions for inulinase production by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inulin; Inulinase; Yeasts; Semi-arid; Fungal endophyte. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000200014 |
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| Luna,Rômulo Gil de; Coutinho,Henrique Douglas Melo; Grisi,Breno Machado. |
| The productivity of a pasture soil (caatinga) located in the region of São João do Cariri, PB, Brazil was evaluated based an the following microbiological parameters: biomass (measured by fumigation-incubation method), activity (estimated from basal respiration and cellulose decomposition rate), qCO2, and Cmic : Corg ratio. This analysis demonstrated that livestock management in the 'caatinga' is probably causing environment damage by affecting the soil properties, reducing the microbial biomass and soil respiration and increasing the qCO2, affecting the recovery of this ecosystem. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Semi-arid; Biomass; Microbial activity; Pasture; Caatinga. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000300001 |
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| Gattai,Graziella S; Pereira,Sônia V; Costa,Cynthia M. C; Lima,Cláudia E. P; Maia,Leonor C. |
| The goals of this study were to evaluate the microbial activity, arbuscular mycorrhizal fungi and inoculation of woody plants (Caesalpinia ferrea, Mimosa tenuiflora and Erythrina velutina) in lead contaminated soil from the semi-arid region of northeastern of Brazil (Belo Jardim, Pernambuco). Dilutions were prepared by adding lead contaminated soil (270 mg Kg-1) to uncontaminated soil (37 mg Pb Kg soil-1) in the proportions of 7.5%, 15%, and 30% (v:v). The increase of lead contamination in the soil negatively influenced the amount of carbon in the microbial biomass of the samples from both the dry and rainy seasons and the metabolic quotient only differed between the collection seasons in the 30% contaminated soil. The average value of the acid phosphatase... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: AMF; Contaminated soil; Heavy metals; Mycorrhizae; Semi-arid. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000300004 |
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| Pinho,Ricardo Martins Araujo; Santos,Edson Mauro; Campos,Fleming Sena; Ramos,João Paulo de Farias; Macedo,Carlos Henrique Oliveira; Bezerra,Higor Fábio Carvalho; Perazzo,Alexandre Fernandes. |
| This study aimed to evaluate the fermentation characteristics, losses and the chemical composition of two pearl millet genotypes silages submitted to nitrogen fertilization. The experimental design was a completely randomized blocks in a split plot scheme 2x5 (two nitrogen genotypes doses x five doses of nitrogen), with four replicates. Nitrogen doses were 0, 20, 40, 60, 80kg ha-1 and the pearl millet genotypes were the variety ADR300 and the hybrid ADR7010. The hybrid ADR 7010 showed average lactic acid content higher than the variety ADR 300, at all doses of N, recording values ranging from 4.09 to 10.46dag kg-1. There was an interaction between nitrogren doses and genotypes for the neutral detergent fiber, which ranged from 51.81 to 63.63dag kg-1 of dry... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical composition; Fermentation characteristics; Lactic acid; Semi-arid. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000500025 |
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| Alves,Pablo F. S.; Santos,Silvânio R.; Kondo,Marcos K.; Pegoraro,Rodinei F.; Araújo,Edcássio D.. |
| ABSTRACT The feasibility of using sewage wastewater as a water and nutrient source for plants is an alternative to harness agricultural natural resource, observing its influence on the organic matter dynamics and soil energy. Our objective here was to evaluate the effects of applying different doses of effluent from a sewage treatment plant, in Janaúba – MG, Brazil, over the physical attributes of a soil grown with “Prata Anã” banana. From soil sample collection at depths of 0-20, 20-40, and 40-60 cm, we determined the following soil properties: soil density, total porosity, macroporosity, microporosity, organic matter, clay dispersed in water and stability of soil aggregate. The experimental design was in randomized blocks with four repetitions.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Musa spp; Agricultural reuse of effluents; Environmental sanitation; Semi-arid. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000600998 |
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| Bassoi,Luís Henrique; Flori,José Egídio; Silva,Emanuel Elder G. da; Silva,José Antonio M. e. |
| The water consumption, crop coefficient and effective rooting depth of the peach palm cultivated in a Vertisol were evaluated over two years and three months, from planting to fifth harvest, in Juazeiro, Bahia State, Brazil. Plants were irrigated by microsprinklers under two irrigation treatments, full irrigation (FI) and reduced irrigation (RI), and the amount of water applied in RI corresponded to 75% of that of FI. Water consumption and crop coefficient has increased markedly at the first harvest (7.3 mm day-1 and 1.2, respectively, in FI treatment) in the thirteenth month, as a consequence of plant canopy development. After that, plants were harvested every three or four months, and these values varied a little due to decrease of the stand. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bactris gasipaes Kunth; Semi-arid; Yield. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362003000400022 |
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| DRUMOND, M. A.; KIILL, L. H. P.; LIMA, P. C. F.; OLIVEIRA, M. C. de; OLIVEIRA, V. R. de; ALBUQUERQUE, S. G. de; NASCIMENTO, C. E. de S.; CAVALCANTI, J.. |
| O presente documento foi preparado com objeto de servir de base à discussão do tema ?Estratégias Para o Uso Sustentável da Biodiversidade da Caatinga?, que resultará no documento final do Seminário ?Biodiversidade da Caatinga?, a ser realizado em Petrolina; Pernambuco, na Embrapa Semi-Árido, no período de 21 a 26 de maio de 2000. Este Seminário, parte integrante do Projeto de Conservação e Utilização Sustentável da Diversidade Biológica Brasileira (PROBIO), é promovido pela Universidade Federal de Pernambuco-UFPE, Fundação Biodiversitas, Conservation International do Brasil, Embrapa Semi-Árido, Ministério do Meio Ambiente, Banco Mundial, CNPq, GEF, Secretaria de ciência de tecnologia e Meio Ambiente do Governo de Pernambuco e SUDENE. |
| Tipo: Folhetos |
Palavras-chave: Sustentabilidade; Potencial; Estrategia; Nordeste; Semi-arido; Sustainability; Potential; Strategy; Northeast; Semi-arid; Natural resource; Recurso natural; Biodiversidade; Caatinga; Agricultura; Pecuária; Recurso Florestal; Tecnologia; Vegetação; Agriculture; Forest resources; Biodiversity; Livestock; Technology; Vegetation. |
| Ano: 2000 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134000 |
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| Registros recuperados: 47 | |
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