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| Registros recuperados: 52 | |
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| CARDOSO,I.S.; SOARES,M.P.; ARAÚJO,V.T.; CABRAL,P.H.R.; JAKELAITIS,A.; MADALÃO,J.C.. |
| ABSTRACT The seed bank is the reserve of viable seeds found in the soil and is related to diversity and abundance of species that make up the weed populations. This study aimed to determine the seed bank in four distinct environments (grazing area, area of vegetables, annual crop area and perennial crop area) in two seasons (rainy and dry season). To determine the seed bank, each environment was divided into four sub-areas of 0.2 hectares, considering that each area was a repetition, totaling 16 experimental units. Samples of 0.8 kg were taken from each area, and each sample was distributed on a plastic tray and allowed to germinate in a greenhouse. The density of the individuals was determined by observing the number of emerging seedlings in the trays,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rainy season; Dry season; Shannon index; Relative importance; Diversity. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000300443 |
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| Manno,Maria Cristina; Rodrigues,Luiz Fernando de Souza; Lima,Kedson Raul de Souza; Carvalhal,Monique Valéria de Lima; Rodrigues Filho,Silas Santiago; Costa,Gleyce Lopes da; Monteiro,Ailime Nayara Gomes; Barreto,Andrea do Nascimento. |
| ABSTRACT: This study aimed to evaluate behavioral aspects of Santa Inês sheep in pasture in humid tropical climate. In order to do so, nine Santa Inês sheep were kept on pasture, exposed to the climate directly, without shade, for 24 days, with 12 alternate days in each period (dry and raining) in 2015. The behavioral parameters evaluated were: food consumption, standing idleness, lying idle and rumination. Observations occurred from 08:00 A.M. to 05:55 P.M. The experimental was a completely randomized design (CRD) with two treatments (rainy season and dry period), nine replications, one animal per experimental unit. To understand the correlations of the behavioral parameters with the climatic variables, Pearson’s correlation was performed. Approximate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dry season; Raining season; Grazing. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000100651 |
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| Lucero, M.; Mindiola, M.. |
| Con el objeto de determinar el patrón de circulación en la Caleta AEOLIAN, en septiembre del 2006 se realizaron mediciones de corrientes a nivel superficial y subsuperficial, periodo correspondiente a una época seca (verano), durante este periodo se realizaron mediciones de perfiles de corrientes utilizando un correntómetro perfilador ADCP WHS300 y de manera adicional se realizaron mediciones de corrientes superficiales para lo cual se utilizaron flotadores a la deriva. El área de estudio esta sujeta a una intensa variación, probablemente debido a la acción conjugada de los vientos, al ciclo mareal, a los efectos topográficos por la cercanía a la línea costera, con velocidades promedios de 0.21 m/s en las capas superficiales, 0.18 m/s en las capas media y... |
| Tipo: Journal Contribution |
Palavras-chave: Current meters; Surface currents; Surface layers; Tidal cycles; Equatorial upwelling; Dry season; Oceanic islands; Nearshore dynamics; Dry season; Http://aims.fao.org/aos/agrovoc/c_2400. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/2394 |
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| Andrade Ruíz, C.E.. |
| La presente investigación se desarrolló en el sector sur de la Bahía de Santa Elena durante octubre 2004 a octubre 2005, analizándose un total de 144 muestras zooplanctónicas e identificándose 24 especies, clasificados en 6 órdenes: 5 de la clase Hydrozoa, con 16 familias; 22 géneros y 22 especies, y 2 clases: La clase Scyphozoa y Cubozoa con 1 especie respectivamente. Se consideró las dos épocas estacionales (lluviosa y seca) registrándose para la época lluviosa el 41% de biomasa total con 6477 ind. (100m3-1), mientras que en la época seca se registró el 59% de biomasa total con 9159 ind. ((100m3-1). El análisis estadístico determinó cambios entre la estación lluviosa con una correlación positiva promedio vs la temperatura con valores de 0.75. Mientras en... |
| Tipo: Journal Contribution |
Palavras-chave: Seasonal distribution; Biomass; Dry season; Rainy season; Species diversity; Zooplankton; Hydrobiology. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/4710 |
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| Santos,Carlos Antonio Costa dos; Silva,Bernardo Barbosa da; Rao,Tantravahi Venkata Ramana; Neale,Christopher Michael Usher. |
| The objective of this work was to evaluate the reliability of eddy covariance measurements, analyzing the energy balance components, evapotranspiration and energy balance closure in dry and wet growing seasons, in a banana orchard. The experiment was carried out at a farm located within the irrigation district of Quixeré, in the Lower Jaguaribe basin, in Ceará state, Brazil. An eddy covariance system was used to measure the turbulent flux. An automatic weather station was installed in a grass field to obtain the reference evapotranspiration (ET0) from the combined FAO-Penman-Monteith method. Wind speed and vapor pressure deficit are the most important variables on the evaporative process in both growing seasons. In the dry season, the heat fluxes have a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Musa; Dry season; Eddy covariance; Latent heat flux; Sensible heat flux; Wet season. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009001100001 |
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| LEITE, G. G.; COSTA, N. de L.; GOMES, A. C.. |
| O trabalho foi realizado na Embrapa Cerrados, no Distrito Federal, em um Latossolo Vermelho-Escuro, textura argilosa. O delineamento experimental utilizado foi em blocos divididos (Experimento em faixas) com tres repeticoes. Foram estudados os efeitos de epocas de diferimento (fevereiro, marco e abril) e de utilizacao (junho, julho, agosto e setembro) para producao de materia seca (MS), conteudo de proteina bruta (PB), percentagem de material morto (MM), digestibilidade in vitro da materia seca (DIVMS) e fibra em detergente neutro (FDN) das gramineas Brachiaria brizantha BRA-002081 e BRA-004391, B. brizantha cv. Marandu, B. ruziziensis, P. maximum cv. Vencedor e A. gayanus cv. Planaltina. Os capins Vencedor e Andropogon apresentaram maior producao de MS,... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Época seca; Época de diferimento; Brachiaria brizantha cv; Marandu; Panicum maximum cv; Vencedor; Andropogon gayanus cv; Planaltina; Felling cycle.; Brachiaria Brizantha; Brachiaria Ruziziensis; Cerrado; Gramínea; Matéria Seca.; Dry season; Grasses; Dry matter content; Varieties.. |
| Ano: 1998 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/554973 |
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| Nääs,Irenilza de Alencar; Romanini,Carlos Eduardo Bites; Salgado,Douglas D'Alessandro; Lima,Karla Andrea Oliveira; Vale,Marcos Martinez do; Labigalini,Marcelo Ricardo; Souza,Silvia Regina Lucas de; Menezes,Adriana Gomes; Moura,Daniella Jorge de. |
| Global warming is affecting agribusiness in its economic aspects. Therefore, the prediction of the evolution of Brazilian beef cattle production cost was made using the IPCC forecast scenario for global warming. The methodology consisted of two steps: (i) the development of a fuzzy model that estimated the grazing land capacity (RP) decrease risk as a function of the changes in the average total rain index, air temperature and increase in extension of the dry season; and (ii) the design of an algorithm for predicting the decrease in production as function of the RPfuzzy model, that results in the impact in beef cattle productivity, and consequent increase in production costs. Historical environmental data from important producing counties in the Cerrado... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dry season; Environmental temperature; Fuzzy simulation; Mathematical modeling. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000100001 |
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| Registros recuperados: 52 | |
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