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Registros recuperados: 11
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Avaliacao de alguns fatores do meio que influenciam a adaptacao, o comportamento fisiologico e o desempenho de bovinos da raca Sindi, nas condicoes ambientais do semi-arido brasileiro. Infoteca-e
TURCO, S. H. N..
Os trabalhos com capim buffel efetuados pela Embrapa Semi-Arido e outras instituicoes, comprovam a possibilidade de incrementos de peso vivo em bovinos da ordem de 100 a 150 kg por cabeca/ano, sendo atualmente considerada um dos mais importantes recursos forrageiros para a regiao semi-arida. Todavia, mesmo com esses ganhos, no periodo seco, pode haver perdas, devido a queda dos teores de proteina e energia do capim. Entretanto, sabendo-se que a qualidade da dieta selecionadas pelos ruminantes em pastejo, pode flutuar com o "status" fenologico das plantas forrageiras, a suplementacao energetica e/ou proteica de baixo custo, via mistura multiplas, pode se tornar uma pratica e uma excelente alternativa na busca do aumento da eficiencia produtiva dos animais,...
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Raca Sindi; Comportamento fisiologico; Desempenho; Adaptacao; Regiao semi-arida; Behaviour; Adaptation; Semiarid region; Bovino; Ecologia Animal; Performance; Animal ecology; Cattle.
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/133623
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Bats (mammalia: chiroptera) from the caatinga scrublands of the crateus region, northeastern Brazil, with new records for the state of Ceará Mastozool. neotrop.
da Silva,Shirley S. P; Dias,Daniela; Martins,Mayara A; Guedes,Patrícia G; de Almeida,Juliana C; da Cruz,Alexandre P; Serra-Freire,Nicolau M; Damascena,Joyce dos S; Peracchi,Adriano L.
Whereas surveys of the bat fauna are available for some localities in the Brazilian Northeast, stud­ies in the caatinga scrublands are still limited. The aim of this study was to survey the bat fauna in an area of caatinga scrublands in the Private Natural Heritage Reserve (RPPN Serra das Almas), which is located on the Ibiapaba Plateau, State of Ceará. The bat assemblage of the reserve was surveyed in July 2012 (rainy season), and January 2013 (dry season), with a total of 19 sampling nights. We captured 347 individuals of 23 species representing six families. The bat fauna was characterized by the predominance of a few abundant species, in particular phyllostomid frugivores, and many rare species, which is frequent in studies based on mist nets at ground...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Caatinga; Neotropical bats; New records; Semiarid region.
Ano: 2015 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832015000200011
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Growth and essential oil production by Martianthus leucocephalus grown under the edaphoclimatic conditions of Feira de Santana, Bahia, Brazil Ciência Rural
Azevedo,Bianca Oliveira de; Oliveira,Lenaldo Muniz de; Lucchese,Angélica Maria; Silva,Daniel de Jesus da; Ledo,Carlos Alberto da Silva; Nascimento,Marilza Neves do.
ABSTRACT: The semiarid region of Brazil holds a great richness of medicinal and aromatic plants with considerable potential for pharmaceutical, food, cosmetic and biopesticide industries. Martianthus leucocephalus (Mart. Ex Benth.) J. F. B. Pastore is endemic to this region, and its essential oils contain a principle compound, isobornyl formate, which demonstrates antimicrobial activity against Bacilus cereus, Staphylococcus aureus and Candida albicans. In spite of its significant pharmacological potential, little is known about its growth. In light of the influence of seasonality on plant growth, development, and secondary metabolism, the present study evaluated the growth and essential oil content of M. leucocephalus grown and harvested during different...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Semiarid region; Terpenes; Biomass; Endemic medicinal plant; Hyptis leucocephala.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000400593
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Hourly, Daily, and Monthly Soil Temperature Fluctuations in a Drought Tolerant Crop Rev. Bras. Ciênc. Solo
Farias,Polianna dos Santos de; Souza,Luciano da Silva; Paiva,Arlicélio de Queiroz; Oliveira,Áureo Silva de; Souza,Laércio Duarte; Ledo,Carlos Alberto da Silva.
ABSTRACT Soil temperature is a physical property of great agricultural importance in the soil-plant relationship and in energy exchange with the atmosphere. This study was conducted in a degraded Cambissolo Háplico Ta Eutrófíco (Cambisol; Inceptisol) in the Irecê Identity Territory, Bahia, Brazil, aiming to evaluate the hourly, daily, and monthly fluctuations of soil temperature at depth, and soil thermal diffusivity in the castor bean crop. Hourly soil temperature data from February 4, 2014, to September 30, 2015, were obtained by using thermocouple sensors (copper-constantan) horizontally installed at 0.05, 0.10, and 0.20 m depths. Soil thermal diffusivity was estimated by phase and amplitude methods. Results showed that, for most days, the soil...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Semiarid region; Cambisol; Inceptisol; Soil thermal diffusivity; Soil temperature variability.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100402
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Insect galls in Rupestrian field and Cerrado stricto sensu vegetation in Caetité, Bahia, Brazil Biota Neotropica
Vieira,Leir Guimarães; Nogueira,Ravena Malheiros; Costa,Elaine Cotrim; Carvalho-Fernandes,Sheila Patrícia; Silva,Juliana Santos.
Abstract: We investigated insect galls in Rupestrian field and Cerrado vegetation in the municipality of Caetité (BA), Brazil, between August/2015 and June/2016. This is the first study of gall diversity in Rupestrian field vegetation in that state. We encountered 48 different morphotypes of galls, distributed among 17 different plant species belonging to 13 genera and 21 host plant families. The greatest gall richness was observed in Cerrado (n=39) as compared to Rupestrian field (n=9) vegetation. The principal botanical families observed with galls were Leguminosae, Malpighiaceae, and Myrtaceae, with 10, 8 and 4 morphotypes, respectively. The genera showing the greatest gall diversity were Copaifera L. (n=6) (Leguminosae-Detarioideae), Croton L. (n=2)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gall-inducing insects; Plant-insect interactions; Northeastern Brazil; Semiarid region.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000200310
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Les agricultures familiales du sertao en mouvement. Infoteca-e
SABOURIN, E.; CARON, P..
Les réalités de I'agriculture familiale nordestine sont plurielles. Contrairement aux discours dominants, qui évoquent invariablement· le petit producteur et son immobilisme, les agricultures familiales connaissent de p rofondes mutations techniques, économiques et sociales. Les résultats des travaux présentés dans cet ouvrage confirment combien les mots d'ordre développementalistes correspondent à des perceptions idéologiques ou déformées de Ia réalité. A leur façon, les connaissances produites cherchent ici à corriger les représentations figées qui prévalent trop souvent.
Tipo: Capítulo em livro técnico (INFOTECA-E) Palavras-chave: Evolucao; Desenvolvimento; Sertao; Familiar farms; Development; Brasil; Nordeste; Semiarid region; Agricultura Familiar; Evolution.
Ano: 2001 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134417
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ORGANIC MATTER FRACTIONS IN A QUARTZIPSAMMENT UNDER CULTIVATION OF IRRIGATED MANGO IN THE LOWER SÃO FRANCISCO VALLEY REGION, BRAZIL Rev. Bras. Ciênc. Solo
Cardoso,José Alberto Ferreira; Lima,Augusto Miguel Nascimento; Cunha,Tony Jarbas Ferreira; Rodrigues,Marcos Sales; Hernani,Luis Carlos; Amaral,Andre Julio do; Oliveira Neto,Manoel Batista de.
Improper land use has lead to deterioration and depletion of natural resources, as well as a significant decline in agricultural production, due to decreased soil quality. Removal of native vegetation to make way for agricultural crops, often managed inadequately, results in soil disruption, decreased nutrient availability, and decomposition of soil organic matter, making sustainable agricultural production unviable. Thus, the aim of the present study was to evaluate the impact of growing irrigated mango (over a 20 year period) on the organic carbon (OC) stocks and on the fractions of soil organic matter (SOM) in relation to the native caatinga (xeric shrubland) vegetation in the Lower São Francisco Valley region, Brazil. The study was carried out on the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mangifera indica; Organic carbon; Humic substances; Heavy fraction; Semiarid region.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000401068
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Origine et evolution de l'agriculture familiale dans le Nordeste semi-aride. Infoteca-e
SABOURIN, E.; CARON, P..
Apres une breve description du cadre agraire régional, ce chapitre résume l'histoire de l'agriculture du Nordeste semi-aride depuis ses origines. Il montre comment et pourquoi l'agriculture familiale, longtemps ignorée, a évolué jusqu'à devenir la principale forme de production agricole dans Ia région, et comment elle fait l'objet, depuis quelques années, d'un regain d'intérêt dans l'ensernble du Brésil.
Tipo: Capítulo em livro técnico (INFOTECA-E) Palavras-chave: Adaptacao; Modernizacao agricola; Nordeste; Regiao semi-arida; Familiar farms; Agricultural development; Colonization; Adaptation; Resistance; Northeast; Semiarid region; Agricultura Familiar; Colonização; Desenvolvimento Agrícola; Resistência; Brazil; Modernization.
Ano: 2001 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134405
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Patterns of species richness and abundance among cactus communities receiving different rainfall levels in the semiarid region of Brazil Acta Botanica
Ferreira,Paulo Sérgio Monteiro; Lopes,Sérgio de Faria; Trovão,Dilma Maria de Brito Melo.
ABSTRACT This study examines the variation in cacti species richness and abundance among sites with different average rainfall and soil types. We assessed a total of 3,660 individuals of six species of Cactaceae: Cereus jamacaru, Melocactus zehntneri, Pilosocereus gounellei, Pilosocereus pachycladus, Tacinga inamoena, and Tacinga palmadora. The greatest species richness and abundance of cacti were at locations with low rainfall and more clayey soils. The species studied differed in multidimensional representation, with some species being more positively related to soils with a higher proportion of fine particles (M. zehntneri and P. gounellei), while others were negatively related to soils with a higher proportion of coarser particles (T. inamoena) or...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Caatinga; Cactaceae; Environmental gradients; Semiarid region; Soil granulometry.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000400569
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Systemes d'intermediation et valorisation economique des produits. Infoteca-e
CERDAN, C.; SAUTIER, D..
Ce chapitre aborde Ia valorisation des produits de L'agriculture familiale. Il met en évidence Ia diversité et Ia spécificité des formes d'insertion au marché de l'agriculture familiale et Ia multiplicité des circuits de commercialisation et de transformation qu'elle mobilise. Les exemples cités se réferent à la filiere du lait et de ses dérivés dans les zones semi-arides et aux filieres régionales du raisin et du melon, deux cultures irriguées importantes dans le Nordeste.
Tipo: Capítulo em livro técnico (INFOTECA-E) Palavras-chave: Sistema de intermediacao; Valorizacao economica; Nordeste; Regiao semi-arida; Familiar farms; Products; Intermediary; Systems; Northeast; Semiarid region; Agricultura Familiar; Mercado; Produto; Economic valuation; Brazil; Trade.
Ano: 2001 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134412
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The role of game mammals as bushmeat In the Caatinga, northeast Brazil Ecology and Society
Although the use of wild mammals as a source of food has been better studied in tropical forest environments, their importance as a source of protein for human communities in semiarid environments is little known. In the latter, the availability of wild animal meat is limited in comparison to other environments. In the semiarid regions of northeastern Brazil, hunting wild mammals for their meat is traditional, playing a crucial role in the livelihoods and food security of various rural and urban communities, especially during the annual drought seasons. In this study, we investigated the role of wild mammals as bushmeat in 10 communities within the Caatinga biome in northeast Brazil. We used key-informant interviews, household surveys, and questionnaires...
Tipo: Peer-Reviewed article Palavras-chave: Conservation; Ethnozoology; Hunting practices; Local ecological knowledge; Mammals; Semiarid region.
Ano: 2016
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