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Search Results: 1 - 10 of 48773 matches for " Rinaldo Luiz Caraciolo;Santos "
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Utiliza o de técnicas multivariadas na avalia o da divergência genética entre clones de palma forrageira (Opuntia ficus-indica Mill.)
Ferreira Carlos Adonai,Ferreira Rinaldo Luiz Caraciolo,Santos Djalma Cordeiro dos,Santos Mércia Virginia Ferreira dos
Revista Brasileira de Zootecnia , 2003,
Abstract: Avaliou-se, por meio de técnicas multivariadas, a divergência genética entre clones de palma forrageira (Opuntia ficus-indica Mill.), em um experimento instalado na Esta o Experimental da Empresa Pernambucana de Pesquisa Agropecuária - IPA, Caruaru - PE. O delineamento foi em blocos casualizados, com três repeti es. Os tratamentos foram 19 clones de palma do Banco de Germoplasma do IPA. Foram mensuradas: a) medidas em artículos, conforme a ordem: comprimento, largura, espessura, número e peso da matéria verde. b) medidas por planta: presen a de espinho, número de artículos por ordem e total, altura total, infesta o por cochonilha e peso da matéria verde. Realizaram-se análises de variancia univariada (ANOVA) e multivariada (MANOVA), das variáveis can nicas (VC) e de agrupamento (AA). Na ANOVA, foi verificada diferen a entre as médias de clones e por meio da MANOVA, diferen a entre vetores de médias de clones. Com a aplica o da VC, foi possível reduzir a dimensionalidade original para duas dimens es, com explica o de 85,03% da varia o total. Foi considerada, como característica passível de descarte, a porcentagem de infesta o por cochonilha. Na AA discriminaram-se nove grupos. A característica porcentagem de infesta o por cochonilha n o deve ser incluída no estudo da diversidade genética nas condi es estudadas. As características de maior discrimina o foram espessuras dos artículos primário, secundário e terciário, número de artículo primário e pesos médios de matéria verde por artículos secundário e terciário. Em um programa de melhoramento de palma forrageira, devem-se considerar o grupo de clones e o desempenho do clone quanto às características de maior relevancia agron mica e zootécnica.
Avalia??o do comportamento de espécies de Eucalyptus spp. na Zona da Mata Pernambucana. I: Resultados do primeiro ano - 2001
Coutinho, Jo?o Luis Barboza;Santos, Venézio Felipe dos;Ferreira, Rinaldo Luiz Caraciolo;Nascimento, José Carlos Barboza;
Revista árvore , 2004, DOI: 10.1590/S0100-67622004000600001
Abstract: due to its high rainfall and predominance of hot climate conditions all over the year, the 'dry rainfall' region of the state of pernambuco, located in the northeastern part of brazil, appears to be suitable to the growth and development of many forest tree species such as those of the genus eucalyptus. in this trial, seedlings of 10 eucalyptus species were tried, namely: eucalyptus saligna sm., e. dunnii maiden, e. benthamii maiden & cambage, e. tereticornis sm., e. urophylla s.t. blake, e. pilularis sm., e. camaldulensis dehnh., e. robusta sm., e. grandis w. hill ex maiden and e. citriodora hook. observations and measurements will be carried out during seven years, taking into account mainly: survival (%), plant height and crown width. a complete randomised block experimental design was used with four replicates, with 35 plants per plot. at the first evaluation, held 12 months after planting, the following data were obtained: the majority of eucalyptus species showed a survival rate higher than 95,0%; in relation to forked trees, only e. dunnii, has not presented such characteristic, while e. citriodora. showed the highest rate (35%) and the others, values below 15%; highest plant height and diameter at breast heigth (dbh) were found among seedlings of e. citriodora, e. urophylla, e. camaldulensis, e. saligna e. grandis and e. dunnii.
Usos de especies le osas de la caatinga del municipio de Floresta en Pernambuco, Brasil: conocimiento de los indios de la aldea Travess o do Ouro Uses of the woody species of the caatinga in Floresta, Pernambuco, Brazil: Indigenous knowledge in the Village Travess o do Ouro
José Serafim Feitosa Ferraz,Rinaldo Luiz Caraciolo Ferreira,Mércia Virgínia Ferreira dos Santos,Isabelle Maria Jacqueline Meunier
Bosque (Valdivia) , 2012,
Abstract: Las especies le osas de la caatinga, vegetación del semiárido del nordeste de Brasil, han sido utilizadas sin conocer los impactos ocasionados al medio ambiente. Este estudio tuvo como objetivo conocer los tipos de uso de la vegetación local por peque os productores rurales de una población indígena en el municipio de Floresta, Pernambuco, Brasil. La investigación se realizó mediante observación directa, en visitas guiadas y entrevistas semiestructuradas. La flora le osa local fue reconocida por los entrevistados que atribuyeron usos para 27 especies le osas arbóreas y arbustivas. Los tipos de uso mencionados para la flora fueron organizados en las categorías: alimentación humana, forraje, construcciones residenciales, construcciones rurales, tecnología, combustibles, medicinales y otros usos no madereros. El uso como forraje se relacionó a los mayores números de especies citadas y de citaciones, seguido por construcciones rurales, combustible y construcciones residenciales. Las especies con mayor número de categorías de usos fueron Myracrodruon urundeuva, Anadenanthera columbrina y Cnidoscolus quercifolius. Spondias tuberosa fue la especie más citada como forraje, seguida por C. quercifolius, Commiphora leptophloeos, Schinopsis brasiliensis y M. urundeuva. Se observó que el uso de la vegetación le osa como madera y le a, en general se hace utilizando la madera que se encontró muerta. Desde la perspectiva de los usuarios, la vegetación le osa de la caatinga está destinada principalmente al forraje: de este modo se muestra la importancia de la ganadería extensiva como actividad de subsistencia y su influencia en el conocimiento de los usos de la vegetación. Woody species of caatinga, vegetation of a semiarid region of Northeastern Brazil, have been used without knowing the impacts caused to the environment. This study aimed to identify the uses of local vegetation by small farmers of an indigenous population in the municipality of Floresta, Pernambuco. The research was conducted by direct observation, guided visits and semi structured interviews. The woody flora of the region was properly recognized by the interviewees and uses were attributed for 27 species of this woody-shrub of caatinga. The types of uses mentioned for the flora were organized into categories of uses: human food, fodder, domestic construction, farm buildings, technology, energy (fuels), medicinal and other uses of non-timber products. The fodder was related to greater numbers of species cited and numbers of citations, followed by rural buildings, energy and residential construction. T
MODELOS DE CRESCIMENTO RESULTANTES DA COMBINA O E VARIA ES DOS MODELOS DE CHAPMAN-RICHARDS E SILVA-BAILEY APLICADOS EM Leucaena leucocephala (Lam.) de Wit
Cícero Carlos Ramos de Brito,José Antonio Aleixo da Silva,Rinaldo Luiz Caraciolo Ferreira,Eufrázio de Souza Santos
Ciência Florestal , 2007,
Abstract: O objetivo deste trabalho foi desenvolver novos modelos de crescimento para recursos florestais aplicados à leucena [Leucaena leucocephala (Lam.) de Wit], tendo como base as hipóteses biológicas propostas por Chapman-Richards e Silva-Bailey. O experimento de leucena foi conduzido na Esta o Experimental da Empresa Pernambucana de Pesquisa Agropecuária – IPA, Caruaru, PE. Foram utilizadas 544 árvores de leucena de um experimento com vinte remedi es realizadas ao longo de 12 anos. Compararam-se novos modelos de crescimento resultantes da combina o e varia es dos modelos de Chapman-Richards e Silva-Bailey, bem como outros comumente usados em recursos florestais. Para a sele o das equa es, utilizaram-se o índice de Ajuste (IA), o erro-padr o da estimativa e a distribui o gráfica dos resíduos. Os resultados indicaram que todos os modelos testados se ajustaram de maneira satisfatória aos dados, podendo ser utilizados para se estimar o crescimento em altura da leucena.
Sazonalidade, composi??o e aporte de nutrientes da serapilheira em fragmento de Mata Atlantica
Espig, Silvana Andreoli;Freire, Fernando José;Marangon, Luiz Carlos;Ferreira, Rinaldo Luiz Caraciolo;Freire, Maria Betania Galvao dos Santos;Espig, Darci Bacelar;
Revista árvore , 2009, DOI: 10.1590/S0100-67622009000500017
Abstract: this research aimed to evaluate the amount of litter fall, the seasonal distribution and the influence of precipitation on the fall. it also intended to determine the nutrient contents and estimated the nutrient input according to time and plant structure. the research was carried out in an atlantic forest remnant in recife-pe metropolitan region. the litter fall was equal to 10.07 tons/ha/year, and the leaf component contributed with 6.74 tons/ha/year (66.9 % of the total). litter fall was higher during the dry season. seasonality influenced the leaf component of the litter fall. the amount of k was low in the rainy season for the leaf and miscellaneous components. the contents of nutrients in g/kg in the litter were ca, 15.73; k, 4.74; mg, 2.42; and p, 0.50. the input of nutrients through the litter was 170.7; 26.4; 5.2; and 49.7 kg/ha/year for ca, mg, p and k, respectively.
Compara??o de duas metodologias multivariadas no estudo de similaridade entre fragmentos de Floresta Atlantica
Ferreira, Rinaldo Luiz Caraciolo;Mota, Adalmeres Cavalcanti da;Silva, José Ant?nio Aleixo da;Marangon, Luiz Carlos;Santos, Eufrázio de Souza;
Revista árvore , 2008, DOI: 10.1590/S0100-67622008000300012
Abstract: the objective of this work was to compare two multivariate methodologies in similarity studies among atlantic forest fragments. a bibliographical survey was carried out, and databanks were set up from 11 fragments of atlantic forest located in the states of pernambuco, rio grande do norte, minas gerais, s?o paulo and rio de janeiro. the study of the floristic similarity was constructed using two methodologies of the multivariate analysis. for the usual methodology, a binary matrix (presence/absence) of 236 tree species present in the 11 fragments was used. a cluster analysis was applied using the simple linkage method and the jaccard's coefficient. in the proposed methodology, the principal components analysis was used for reducing the size of the density matrix and absolute dominancy of the 236 tree species, using the principal component scores to apply the cluster analysis by the euclidean distance single linkage method. two groups were identified; one in the northeastern region (pernambuco) and another in the southeastern region (minas gerais). the proposed methodology identified only one group with fragments in the northeastern region (pernambuco), standing out that the quantitative variables are of utmost importance for the association of forests in different regions. the proposal methodology has potential for use in the study of forest fragment similarity.
Distin??o de grupos ecológicos de espécies florestais por meio de técnicas multivariadas
Santos, José Humberto da Silva;Ferreira, Rinaldo Luiz Caraciolo;Silva, José Ant?nio Aleixo da;Souza, Agostinho Lopes de;Santos, Eufrázio de Souza;Meunier, Isabelle Maria Jacqueline;
Revista árvore , 2004, DOI: 10.1590/S0100-67622004000300010
Abstract: the objective of this research was to apply multivariete techniques analysis to separate ecological groups. data of 37 tree species, in area without intervention, obtained in ten years of survey by the experiment of sustainable production in secondary forest of transition, established in 1986, at rio vermelho and serra azul de minas, minas gerais state, brazil were used. the species were separated in pioneers, early secondary and old secondary. the considered variables were: number of trees per hectare, number of ingrowth, mortality, basal area, volume, mean diameter, increment in diameter, increment in basal area, increment in volume, index of value of importance and natural regeneration. principal components analysis (pca); cluster analysis (ca) and the discriminant analysis (da) were used. by pca it was possible to reduce the dimension to three-dimensional with variance explanation above 79%. in the ca, seeking a classification at posteriori, it was observed that group formation did not correspond to the classification at priori. with the da, 92.86 and 57.14% of classification at posteriori and at priori respectively were correct. in conclusion: the use of the principal components analysis, cluster analysis and discriminant analysis allowed the identification of tree species that should be classified in a larger number of ecological groups; and the application of pca, ca and da in the evaluation of at priori classification confirms most researchers' subjectivity in classifying ecological groups of tree species.
Coeficiente de repetibilidade e parametros genéticos em capim-elefante
Cavalcante, Marcelo;Lira, Mário de Andrade;Santos, Mércia Virgínia Ferreira dos;Pita, Eduardo Bruno Afonso Ferreira;Ferreira, Rinaldo Luiz Caraciolo;Tabosa, José Nildo;
Pesquisa Agropecuária Brasileira , 2012, DOI: 10.1590/S0100-204X2012000400013
Abstract: the objective of this work was to determine the coefficients of repeatability of morphophysiological traits in elephant grass (pennisetum spp.) genotypes, from data obtained during six evaluation cycles. the minimum number of measurements and genetic parameters were estimated. the experiment design was a randomized complete block, in a split?plot arrangement, with four n levels (control, 30, 60, and 90 kg ha?1 per cut) and 16 pennisetum genotypes (11 interspecific hybrids and five cultivars). the cycles consisted of evaluations in 2010 (4/21, 7/19, and 9/28) and 2011 (1/6, 4/7, and 8/3). the coefficients of repeatability were of medium?high magnitude for all variables, indicating that there was regularity between repeated measures. for the variables forage mass, plant height, leaf length and width, stem diameter, leaf chlorosis and area index, three cycles of evaluation are enough to reach r2 of 90% by principal component analysis. for internode length, the minimal of seven evaluations is necessary to predict the true value of genotypes. the genetic parameters of the variables forage mass, leaf length and width, stem diameter and leaf chlorosis are of high magnitude, favoring the selection of superior pennisetum genotypes.
Decomposi??o de serrapilheira em bosque de sabiá na Zona da Mata de Pernambuco
Freire, Joelma de Lira;Dubeux Júnior, José Carlos Batista;Lira, Mario de Andrade;Ferreira, Rinaldo Luiz Caraciolo;Santos, Mércia Virginia Ferreira dos;Freitas, Erinaldo Viana de;
Revista Brasileira de Zootecnia , 2010, DOI: 10.1590/S1516-35982010000800006
Abstract: the research aimed to evaluate the decomposition of sabiá (mimosa caesalpiniifolia benth) litter fractions by using the nylon bag technique. the following litter fractions were incubated: senescent leaves, leaves at the beginning of mineralization, and branches with diameter up to 20 mm. incubation was performed during periods of 0, 4, 8, 16, 64, 100, and 256 days in 2006 and 2007. the fractions were distributed in a random block design with five replications. it was evaluated the disappearance of biomass, nitrogen (n), and phosphorus (p), concentrations of nitrogen and phosphorus and the carbon/ nitrogen ratio of litter during the periods of incubation. in general, the negative exponential model explained the disappearance of biomass, nitrogen, and phosphorus, however, there was a variation among years and, in some cases, despite of being significant, the models showed a low correlation between predicted and observed data. biomass disappearance rate was slow because only 30% of leaf biomass was mineralized after 256 days of incubation. net nitrogen mineralization showed large variation among years, and it differed among the studied fractions. nitrogen content of the litter increased, on average, until 32 days (leaves) and until 64 days (branches) of incubation followed by stabilization. the linear plateau model was used to explain that process. in the course of the incubation periods, the carbon/nitrogen ration decreased. despite of the high content of nitrogen, the decomposition of sabiá litter is slow, what might reduce the loss of nutrients in the forest, increasing its sustainability and reducing the possible deleterious effects to the environment.
Uso de descritores morfológicos e herdabilidade de caracteres em clones de capim-elefante de porte baixo
Silva, Sharlyton Harysson Barbosa da;Santos, Mércia Virginia Ferreira dos;Lira, Mario de Andrade;Dubeux Junior, José Carlos Batista;Freitas, Erinaldo Viana de;Ferreira, Rinaldo Luiz Caraciolo;
Revista Brasileira de Zootecnia , 2009, DOI: 10.1590/S1516-35982009000800008
Abstract: the experiment was carried out with the objectives to evaluate the use of morphologic descriptor in the characterization and selection of dwarf elephant grass genotypes, and to evaluate the heritability of the evaluated traits. nine dwarf elephant grass clones were used (taiwan a.146 - 2.14, taiwan a.146 - 2.27, taiwan a.146 - 2.37, taiwan a.146 - 2.114, merker méxico - 6.2, merker méxico - 6.5, merker méxico - 6.31, cv. mott, and cnpgl92f198.7) was allotted to a randomized complete block design was used with three replications. the morphologic descriptors were applied every 60 days after the staging cut. a total of five cuts were performed at 60-day intervals using a height of 10 cm from ground level. among the evaluated dwarf elephant grass clones the tallest ones were more desirable, and this trait should be considered at the moment of selection. heritability estimate was high for all evaluated traits of dwarf elephant grass, varying from 66% for sheath wax to 100% for mid-rib color. the taiwan a.146 - 2.37 clone was similar to the mott cultivar. heritability values showed genetic variability among clones, detected at 60 days regrowth. some of the used morphologic descriptors allowed characterization of the evaluated genotypes. the clones taiwan a. 146-2.27, taiwan a. 146-2.37, taiwan a. 146-2.114, and merker méxico 6.31 were the tallest and showed greater total tillering intensity, and were more desirable, presenting greater potential for use under cutting.
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