Consulta: subjectFacets:"Precipitation"
Registros recuperados: 58
Data/hora: 03/06/2024 10:59:57

Estudio comparativo de tres épocas del año en características químicas, plantas y organismos de suelo contaminado con petróleo en La Venta, Tabasco, México.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Dorantes Avelino, Rodrigo.
En esta investigación el objetivo fue evaluar las propiedades físicas, químicas y biológicas en un suelo Agrícola y Pecuario para un día específico en tres épocas del año, así como el efecto de los hidrocarburos del petróleo y acumulación de precipitación en el ejido José Narciso Rovirosa, Huimanguillo, Tabasco. El sitio seleccionado es un área de 44,321.199 m2 ubicada al sureste del Complejo Procesador de Gas La Venta, el suelo es receptor de petróleo crudo desde hace 20 años y fue descontaminado en abril 2002. Se establecieron (de agosto 2009  a abril 2010) nueve puntos (2x2 m) experimentales distribuidos completamente al azar. Se realizaron tres muestreos (30 de septiembre del 2009, 30 de enero y 30 de abril del 2010). Se determinó; la acumulación de...
Palavras-chave: Bacterias; Biomasa aérea; Hongos; Hidrocarburos; Precipitación; Bacteria; Biomass; Fungi; Hydrocarbons; Precipitation; Maestría; Producción Agroalimentaria en el Trópico.
Ano: 2010
URL: http://hdl.handle.net/10521/240

Fluctuación poblacional de Aeneolamina postica (Walker) (Hemiptera: Cercopidae) en la zona productora de caña de azúcar
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Olan Hernández, José Francisco.
En el estado de Tabasco existen alrededor de 27,041 ha de caña de azúcar (Saccharum officinarum L), cuya producción está destinada para la industria azucarera. Entre los problemas fitosanitarios que limitan la producción del cultivo destaca la especie Aeneolamia postica (Walker) que ocasiona reducciones de hasta el 60% en los rendimien tos. La presente investigación tuvo como objetivo conocer la fluctuación poblacional de ninfas y adultos de  A. postica durante un año en la zona productora de caña de azúcar de la Chontalpa, Tabasco, El estudio se desarrolló mediante muestreos semanales de noviembre de 2007 a octubre de 2008 en una plantación de caña de una hectárea, de la variedad CP722086, en el ciclo de resoca, localizada a la altura del km 21 de la...
Tipo: Tesis
Palavras-chave: Saccharum officinarum; Aeneolamia postica; Precipitación; Temperatura; Saccharum officinarum; Aeneolamia postica; Precipitation; Temperature.
Ano: 2009
URL: http://hdl.handle.net/10521/1614

Estudio comparativo de tres épocas del año en características químicas, plantas y organismos de suelo contaminado con petróleo en La Venta, Tabasco, México.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Dorantes Avelino, Rodrigo.
En esta investigación el objetivo fue evaluar las propiedades físicas, químicas y biológicas en un suelo Agrícola y Pecuario para un día específico en tres épocas del año, así como el efecto de los hidrocarburos del petróleo y acumulación de precipitación en el ejido José Narciso Rovirosa, Huimanguillo, Tabasco. El sitio seleccionado es un área de 44,321.199 m2 ubicada al sureste del Complejo Procesador de Gas La Venta, el suelo es receptor de petróleo crudo desde hace 20 años y fue descontaminado en abril 2002. Se establecieron (de agosto 2009  a abril 2010) nueve puntos (2x2 m) experimentales distribuidos completamente al azar. Se realizaron tres muestreos (30 de septiembre del 2009, 30 de enero y 30 de abril del 2010). Se determinó; la acumulación de...
Palavras-chave: Bacterias; Biomasa aérea; Hongos; Hidrocarburos; Precipitación; Bacteria; Biomass; Fungi; Hydrocarbons; Precipitation; Maestría; Producción Agroalimentaria en el Trópico.
Ano: 2010
URL: http://hdl.handle.net/10521/240

Fluctuación poblacional de Aeneolamia postica (Walker) (Hemiptera: Cercopidae) en la zona productora de caña de azúcar (Saccharum officinarum L.) de la Chontalpa Tabasco
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Olán Hernández, José Francisco.
En el estado de Tabasco existen alrededor de 27,041 ha de caña de azúcar  (Saccharum officinarum L), cuya producción está destinada para la industria azucarera.  Entre los problemas fitosanitarios que limitan la producción del cultivo destaca la  especie Aeneolamia postica (Walker) que ocasiona reducciones de hasta el 60% en los  rendimientos. La presente investigación tuvo como objetivo conocer la fluctuación  poblacional de ninfas y adultos de  A. postica durante un año en la zona productora de  caña de azúcar de la Chontalpa, Tabasco, El estudio se desarrolló mediante muestreos  semanales de noviembre de 2007 a octubre de 2008 en una plantación de caña de una  hectárea, de la variedad CP722086, en el ciclo de resoca, localizada a la altura del km  21 de...
Tipo: Tesis
Palavras-chave: Saccharum officinarum; Aeneolamia postica; Precipitación; Temperatura; Maestría; Producción Agroalimentaria en el Trópico; Precipitation; Temperature.
Ano: 2009
URL: http://hdl.handle.net/10521/1288

Can Logging in Equatorial Africa Affect Adjacent Parks?
Provedor de dados: Ecology and Society
Autores: Baidya Roy, Somnath; Princeton University; sbroy@duke.edu; Walsh, Peter D; Princeton University; walsh@eva.mpg.de; Lichstein, Jeremy W; Princeton University; jwl@princeton.edu.
Tropical deforestation can cause fundamental regional-scale shifts in vegetation structure and diversity. This is particularly true in Africa. Although national parks are being established to protect areas from deforestation and to conserve biodiversity, these parks are not immune to disturbances outside their boundaries. We used regional-scale atmospheric simulation experiments to investigate how deforestation in timber concessions might affect precipitation inside adjacent, undisturbed national parks in the equatorial African countries of Gabon and the Republic of Congo. The experiments revealed a complex response. Some parks showed rainfall reduced as much as 15%, while others showed slight increases. Rainfall inside parks was particularly sensitive to...
Tipo: Peer-Reviewed Reports
Palavras-chave: Deforestation; Logging; Precipitation; Climate change; Africa; Tropics; National park.
Ano: 2005

SPATIAL, SEASONAL, AND TEMPORAL VARIATIONS IN RAINFALL AGGRESSIVENESS IN THE SOUTH OF BRAZIL
Provedor de dados: Engenharia Agrícola
Autores: Back,Álvaro J.; Gonçalves,Fabiane N.; Fan,Fernando M.
ABSTRACT The objective of this study is to evaluate spatial and temporal variations in rainfall aggressiveness in southern Brazil. A total of 181 rain gauge stations located in southern Brazil with rainfall time series from 1976 to 2015 were used. Seasonal and annual rainfall aggressiveness values measured according to the Modified Fournier Index (MFI) were analyzed. The trends in the data series were evaluated using the Mann-Kendall test at a level of significance of 5%. Maps on spatial and seasonal variations in rainfall aggressiveness were prepared. The percentage of rain gauge stations with significant decreasing trends, significant increasing trends, and no significant trends in rainfall aggressiveness between years was 3.3%, 7.7%, and 89.0%,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Erosivity; Soil conservation; Precipitation; Climatic trends.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000400466

Levantamento e distribuição da precipitação em Roraima.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: LAMEIRA, O. A.; COIMBRA, J. M. A.
Tipo: Folhetos
Palavras-chave: Precipitacao; Distribuicao; Brasil; Roraima; Precipitation; Climatologia; Levantamento; Brazil; Climatology.
Ano: 1988
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/687457

Informacoes basicas para elaboracao de projetos de irrigacao.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: MEDEIROS, R. D. de; ROJAS, R. N. Z.
Informacoes basicas; Recursos hidricos; Potencial hidrico; Localizacao da fonte; distancia e altura de recalque; Qualidade da agua; Problemas; Precaucoes; Amostragem da agua para analise; Custo da agua; O solo; Topografia; Dimensoes e formas da area; uniformidade topografica; Acidentes topograficos; Perfil do solo; Textura e estrutura; Profundidade; Densidade do solo; Capacidade de retencao de agua; Taxa de infiltracao; Condutividade hidraulica do solo; Caracteristicas quimicas; Clima; Precipitacao pluviometrica; Vento; Umidade relativa do ar; Temperatura do ar; Evapotranspiracao potencial ou referencia; Metodos de determinacao; Equacao de hargreaves; Equacao de Blaney-Criddle; Metodo de tanque evaporimetrico; Selecao das culturas; Clima; Solo; Agua; Valor...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Precipitacao; Precipitation; Água; Chuva; Clima; Irrigação; Recurso Hídrico; Solo; Climate; Irrigation; Soil; Water.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/694585

Mudanças climáticas em Sete Lagoas-MG, Brasil: tendências de variações de temperatura e precipitação entre 1926 e 2021.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: LANDAU, E. C.; GUIMARAES, D. P.; VALADARES, G. M.
O aquecimento global e os efeitos relacionados a esse fenômeno representam uma preocupação para a tomada de decisões na agropecuária e outras atividades dependentes do clima. Este trabalho objetiva identificar possíveis tendências de mudanças climáticas de temperatura e precipitação pluvial ou pluviométrica, considerando período de análise de mais de 90 anos consecutivos, na Estação Meteorológica de Sete Lagoas, Minas Gerais. As análises de tendência de mudança de temperatura e dos padrões de precipitação foram realizadas através do ajuste de regressão linear simples. Foram analisadas possíveis tendências de mudanças nos padrões de temperatura e precipitação nas últimas décadas considerando série histórica de dados registrados na Estação Meteorológica de...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Aquecimento global; Precipitation; Temperatura; Precipitação Pluvial; Clima; Aquecimento; Global warming; Temperature.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1133038

Chuvas intensas no Estado de Mato Grosso.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: FIETZ, C. R.; COMUNELLO, E.; CREMON, C.; DALLACORT, R.; PEREIRA, S. B.
O objetivo deste trabalho foi determinar a probabilidade de ocorrência de chuvas intensas no Estado de Mato Grosso. Séries com os valores máximos anuais da precipitação de um dia de 151 postos pluviométricos de Mato Grosso foram ajustadas à Distribuição de Gumbel. Os parâmetros da distribuição foram estimados pelo método de máxima verossimilhança. Houve ajuste de todas as séries de intensidade máxima anual à distribuição Gumbel, de acordo com o teste Kolmogorov-Smirnov. Através das distribuições ajustadas foram calculados os valores de precipitação máxima de 1 dia para períodos de retorno de 2, 3, 4, 5, 10, 15, 20 e 50 anos. Utilizando o método de desagregação de chuvas, estimou-se a precipitação máxima com duração de 5, 10, 15, 20, 25, 30 minutos e 1, 6,...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Probabilidade; Mato Grosso; Intense rainfall; Precipitation; Gumbel distribution.; Chuva.
Ano: 2010
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/866618

Índice de erosividade das chuvas na região de Conceição do Araguaia, Pará.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: OLIVEIRA JUNIOR, R. C. de.
bitstream/item/42896/1/Boletim-Pesquisa-165-CPATU.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Precipitação atmosférica; Conceição do Araguaia; Pará; Brasil; Precipitation; Erosion.; Erosão.; Amazonia.
Ano: 1996
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/374434

Chuvas intensas no estado de Mato Grosso.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: FIETZ, C. R.; COMUNELLO, E.; CREMON, C.; DALLACORT, R.; PEREIRA, S. B.
bitstream/item/53790/1/DOC2011104.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Precipitação; Distribuição Gumbel; Rainfall; Precipitation; Gumbel distribution.; Chuva.
Ano: 2011
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/915074

Distribuição espacial das precipitações anuais no Piauí: caracterização e modelos.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: MIRANDA, E. E. de; OLIVEIRA, J. T. S.; MIRANDA, J. de S.; BARROS, R. J. S.
Este trabalho apresenta quatro (4) equações capazes de estimar as precipitações anuais para qualquer ponto do Estado, partindo unicamente de seus parâmetros de localização geográfica. Ajustadas "in situ", elas foram elaboradas para uma área de 460.000 km2 que engloba todo o estado do Piauí e partes dos estados limítrofes, do Maranhão, Ceará, Pernambuco e Bahia. Cada equação tem as variáveis, distância, angulo, altitude, coordenadas cartesianas e suas interações com relação a uma estação de referência. Nas regiões estudadas as equações obtidas permitem uma estimação das precipitações anuais com um desvio médio de aproximadamente 10% para o conjunto das estações estudadas. dadas.
Tipo: Livros
Palavras-chave: Distribuição espacial; Piauí; Precipitation; Distribution; Chuva; Precipitação pluvial; Meteorologia; Meteorology; Rain.
Ano: 1981
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/132587

Probabilidade de ocorrencia de chuva no Estado de Goias.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: SILVA, F. A. M. da; ASSAD, E. D.; LUIZ, A. J. B.; OLIVEIRA, A. C.
O conhecimento da probabilidade de ocorrencia de chuva pode ajudar no entendimento da variabilidade da precipitacao no tempo e no espaco, alem de servir como dado basico para a avaliacao do potencial de determinada regiao quanto a irrigacao e a obras de engenharia, tais como: dimensionamento de poentes e canais de captacao de aguas pluviais, bem como para o armazenamento de agua para o abastecimento. Com o objetivo de criar subsidios para o planejamento dessas atividades, principalmente daquelas relacionadas ao setor agricola, este trabalho apresenta valores de probabilidades de ocorrencia de chuva para 143 localidades do Estado de Goias. Para isso, os valores diarios observados das series pluviometricas, com no minimo 10 anos de dados, foram ajustados a...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Precipitacao; Brasil; Precipitation; Gama; Goiás; Probabilidade; Rainfall; Savanna.; Cerrado; Chuva; Meteorologia.; Brazil; Meteorology; Rain.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/554971

Seasonal cycle and interannual variability of rainfall at hydrological scales. The West African monsoon in a Sudanese climate
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Le Lay, Matthieu; Galle, Sylvie.
West African rainfall is characterized by a strong variability, both at decadal and interannual scales. In order to quantify the hydrological impacts of such a variability, analysis of rainfall patterns at fine scales is highly essential. This diagnostic study aims to characterize the Sudanese rainfall regime at hydrological scales, using a raingauge data set collected on the upper Oueme River catchment (Benin) between 1950 and 2002. A long-term drought is observed during the 1970s and 1980s, as in the Sahel. However, the interannual variability remains significant in the Sudanese region. The study of the seasonal cycle, based on the distinction between the oceanic and continental monsoon regimes, shows that the majority of rainfall changes occur in the...
Tipo: Text
Palavras-chave: Catchment; Sudanese climate; Rainfall deficit; Monsoon; Precipitation; West Africa.
Ano: 2005
URL: https://archimer.ifremer.fr/doc/00203/31460/30115.pdf

The silicon isotopic composition of fine-grained river sediments and its relation to climate and lithology
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bayon, Germain; Delvigne, C.; Ponzevera, Emmanuel; Borges, A. V.; Darchambeau, F.; De Deckker, P.; Lambert, T.; Monin, L.; Toucanne, Samuel; Andre, L.
The δ30Si stable isotopic composition of silicon in soils and fine-grained sediments can provide insights into weathering processes on continents, with important implications on the Si budget of modern and past oceans. To further constrain the factors controlling the distribution of Si isotopes in sediments, we have analysed a large number (n=50) of separate size-fractions of sediments and suspended particulate materials collected near the mouth of rivers worldwide. This includes some of the world’s largest rivers (e.g. Amazon, Congo, Mackenzie, Mississippi, Murray-Darling, Nile, Yangtze) and rivers from the case study areas of the Congo River Basin and Northern Ireland. Silt-size fractions exhibit a mean Si isotopic composition (δ30Si = -0.21 ± 0.19‰; 2...
Tipo: Text
Palavras-chave: World rivers; Congo basin; Northern Ireland; Si isotopes; Clay minerals; Weathering; Temperature; Precipitation.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00434/54609/55991.pdf

Astronomically forced variations in western African rainfall (21 N-20 S) during the Last Interglacial period
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Govin, Aline; Varma, Vidya; Prange, Matthias.
This study documents the long-term evolution of western African precipitation during the Last Interglacial (LIG). We compare geochemical records obtained on nine sediment cores from the western African margin to a transient simulation (130–115 ka) performed with an ocean-atmosphere general circulation model and insolation as sole forcing. Good agreement between proxy records and model outputs indicates that long-term changes in western African precipitation largely responded to insolation variations during most of the LIG. After an early LIG dry phase (related to high-latitude iceberg melting or dating uncertainties), boreal summer insolation controlled the intensification of the North African monsoon between 127 and 122 ka, perhaps facilitating human...
Tipo: Text
Palavras-chave: Last Interglacial; Africa; Precipitation; Astronomical forcing; Marine sediment cores; Model simulations.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00290/40164/38778.pdf

Large-scale overview of the summer monsoon over West Africa during the AMMA field experiment in 2006
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Janicot, S.; Thorncroft, C. D.; Ali, A.; Asencio, N.; Berry, G.; Bock, O.; Bourles, B.; Caniaux, G.; Chauvin, F.; Deme, A.; Kergoat, L.; Lafore, J.-p.; Lavaysse, C.; Lebel, T.; Marticorena, B.; Mounier, F.; Nedelec, P.; Redelsperger, J.-l.; Ravegnani, F.; Reeves, C. E.; Roca, R.; De Rosnay, P.; Schlager, H.; Sultan, B.; Tomasini, M.; Ulanovsky, A.
The AMMA (African Monsoon Multidisciplinary Analysis) program is dedicated to providing a better understanding of the West African monsoon and its influence on the physical, chemical and biological environment regionally and globally, as well as relating variability of this monsoon system to issues of health, water resources, food security and demography for West African nations. Within this framework, an intensive field campaign took place during the summer of 2006 to better document specific processes and weather systems at various key stages of this monsoon season. This campaign was embedded within a longer observation period that documented the annual cycle of surface and atmospheric conditions between 2005 and 2007. The present paper provides a large...
Tipo: Text
Palavras-chave: Meteorology and atmospheric dynamics; Climatology; Precipitation; Tropical meteorology.
Ano: 2008
URL: https://archimer.ifremer.fr/doc/00203/31457/29861.pdf

On the early fate of hydrothermal iron at deep-sea vents: A reassessment after in situ filtration
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Waeles, Mathieu; Cotte, Laura; Pernet-coudrier, Benoit; Chavagnac, V.; Cathalot, Cecile; Leleu, T.; Laes-huon, Agathe; Perhirin, Antoine; Riso, R. D.; Sarradin, Pierre-marie.
Deep-sea hydrothermal venting is now recognized as a major source of iron (Fe), an essential trace element that controls marine productivity. However, the reactions occurring during dispersal from buoyant plumes to neutrally buoyant hydrothermal plumes are still poorly constrained. Here we report for the first time on the dissolved-particulate partition of Fe after in situ filtration at the early stage of mixing at different hydrothermal discharges, i.e., Lucky Strike (37 degrees N), TAG (26 degrees N), and Snakepit (23 degrees N) on the Mid-Atlantic Ridge. We found that hydrothermal iron is almost completely preserved (&gt;90%) in the dissolved fraction, arguing for low iron-bearing sulfide precipitation of iron in basalt-hosted systems with low Fe:H2S...
Tipo: Text
Palavras-chave: Hydrothermal; Iron; Sulfide; Venting; Filtration; Precipitation.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00388/49944/50522.pdf

Impact of surface temperature biases on climate change projections of the South Pacific Convergence Zone
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Dutheil, Cyril; Bador, M.; Lengaigne, M.; Lefèvre, J.; Jourdain, N. C.; Vialard, J.; Jullien, Swen; Peltier, A.; Menkes, C.
The South Pacific Convergence Zone (SPCZ) is poorly represented in global coupled simulations from the Coupled Model Intercomparison Project Phase 5 (CMIP5), with trademark biases such as the tendency to form a “double Intertropical convergence zone” and an equatorial cold tongue that extends too far westward. Such biases limit our confidence in projections of the future climate change for this region. In this study, we use a downscaling strategy based on a regional atmospheric general circulation model that accurately captures the SPCZ present-day climatology and interannual variability. More specifically, we investigate the sensitivity of the projected rainfall response to either just correcting present-day CMIP5 Sea Surface Temperature (SST) biases or...
Tipo: Text
Palavras-chave: Regional climate models; South Pacific Convergence Zone; Precipitation; Sea Surface Temperature.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00484/59603/62636.pdf

Ecology of small terrestrial mammals in an isolated Cerrado patch, eastern Paraguay: communities, species, and effects of enso, precipitation, and fire
Provedor de dados: Mastozoología Neotropical
Autores: Owen,Robert D.
The Cerrado extends as islands or patches into the Upper Paraná Atlantic Forest (UPAF) of Brazil and Paraguay. This study evaluates the temporal dynamics of a marginal terrestrial small-mammal community in an isolated Cerrado patch within the UPAF, at the southwestern distributional limit of the Cerrado and near the western limit of the UPAF in eastern Paraguay. Because the faunal members of marginal communities are living near the limits of their capabilities in terms of their abiotic and biotic environment, the communities in such areas are likely to be a mixture of Cerrado and UPAF species, sensitive to extrinsic variables such as climate change and anthropogenic changes in land use. In this 23-month study, temporal dynamics of a terrestrial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cricetidae; Didelphidae; Echimyidae; Fire; ENSO; Precipitation.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832013000100007

Farmer participatory varietal selection in groundnut - a success story in Anantapur
Provedor de dados: Open Acess Agriculture Research Repository
Autores: Nigam, S.N.
Palavras-chave: Viruses; Groundnuts; Weather hazards; Animal nutrition; Necrosis; Wet season; Seed production; Body weight; Yields; Precipitation.
Ano: 2005
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3244

Climate prediction for sustainable production of rainfed groundnuts in sat: crop establishment risks in the Anantapur region
Provedor de dados: Open Acess Agriculture Research Repository
Autores: S.M.
Palavras-chave: Groundnuts; Sowing date; Precipitation; Products; Cropping systems; Agroclimatic zones; Weather data; Soil water content; Yields; Crops.
Ano: 1999
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4214

RAINFALL PROBABILITY ESTIMATES FOR SELECTED LOCATIONS OF SEMI-ARID INDIA
Provedor de dados: Open Acess Agriculture Research Repository
Autores: S.M.
Palavras-chave: Precipitation; Selection; Seasons; Dry season; Wet season; Purification; Phenomena; Crops; Farming systems; Weather hazards.
Ano: 1982
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3982

The use of crop combinations in reducing
Provedor de dados: Open Acess Agriculture Research Repository
Autores: K.G.K.
Palavras-chave: Soil degradation; Runoff; Watersheds; Land resources; Crops; Soil management; Investment; Precipitation; Solutions; Resources.
Ano: 1991
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3156

Rainfall probability estimates for selected locations of semi-arid India
Provedor de dados: Open Acess Agriculture Research Repository
Autores: S.M.
Palavras-chave: Precipitation; Selection; Seasons; Dry season; Wet season; Purification; Phenomena; Crops; Farming systems; Weather hazards.
Ano: 1982
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4160

Impact of vertisol technology in India
Provedor de dados: Open Acess Agriculture Research Repository
Autores: P.K.
Palavras-chave: Genetic soil types; Double cropping; Pigeonpeas; Fertilizer application; Summer; Placement; Weeds; Tillage equipment; Precipitation; Technology.
Ano: 2002
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4233

Small Watershed Hydrology
Provedor de dados: Open Acess Agriculture Research Repository
Palavras-chave: Runoff; Watersheds; Hydrology; Water balance; Bunding; Resource conservation; Evapotranspiration; Agricultural engineering; Precipitation.
Ano: 1989
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4057

INTERNATIONAL WORKSHOP ON FARMING SYSTEMS
Provedor de dados: Open Acess Agriculture Research Repository
Palavras-chave: Farming systems; Systems; Fallow systems; Cropping patterns; Millets; Runoff; Crops; Tropical zones; Precipitation.
Ano: 1975
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3968

A handbook on the rainfall climatology of West Africa: data for selected locations
Provedor de dados: Open Acess Agriculture Research Repository
Autores: S.J.
Palavras-chave: Latitude; Evapotranspiration; Microclimate; Agroclimatology; Location; Precipitation; Climatology; Water balance; Plant production; Electrophoresis.
Ano: 1980
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3990

Dendrochronology of species from Brazilian Araucaria Forest, Candoi, PR
Provedor de dados: PFB - Pesquisa Florestal Brasileira
Autores: Mattos, Patricia Póvoa de; Santos, Andreia Taborda dos; Oliveira, Yeda Maria Malheiros de; Rosot, Maria Augusta Doetzer.
In the present work the dendrochronological potential of six species of the Araucaria Forest is analyzed. The trunks of 20 trees were collected in Candoi, State of Parana, Brazil, from an area that belongs toELEJOR, Centrais Elétricas do Rio Jordão, for the following species: Araucaria angustifolia, Clethra scabra, Cedrela lilloi, Ocotea porosa, Podocarpus lambertii and Sebastiania commersoniana (3 to 6, from each species). The trunks were sawed, and at breast height a sample was taken from the center of the board, from bark to bark, crossing the pith, for macroscopic analysis. These samples were dried and polished, making possible the recognition and measurement of growth rings The historical climatic data series were provided by SIMEPAR, the State...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth rings; Precipitation; Temperature; Forest dynamics; Atlantic Rain Forest Anéis de crescimento; Precipitação pluviométrica; Temperatura; Dinâmica de florestas; Mata Atlântica.
Ano: 2010
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/141

Nutrient characteristics of throughfall and stemflow in the natural forest of Pinus densata in the Tibetan plateau
Provedor de dados: Phyton: Revista Internacional de Botánica Experimental
Autores: Lu,J; Zhang,SX; Fang,JP; Zheng,WL.
Precipitation, throughfall and stemflow were monitored and collected through the rainy season on a natural forest ecosystem of Pinus densata in the Gongbu Nature Reserve in Tibet. The concentrations of N, P, K, Na, Ca, Mg, Si, Mn, Fe, S, Zn and Cu were analyzed in the precipitation, throughfall and stemflow waters, Thereafter, and according to the amount of water of precipitation, throughfall and stemflow, the net input was calculated for each nutrient in the forest. The results showed that: (1) During the entire rainy season, the average concentration of different nutrients in the precipitation of the Pinus densata forest was ranked in the following order: N&gt;K&gt;Na&gt;Ca&gt;Mg&gt;Si&gt;P&gt;Mn&gt;Fe&gt;S&gt;Zn&gt;Cu. The concentration of N 29.6145...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pinus densata; Natural forest; Precipitation; Troughfall; Stemflow; Nutrient characteristics.
Ano: 2016
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572016000100019

Relationships between the bioactive compound content and environmental variables in Glycyrrhiza uralensis populations in different habitats of North China
Provedor de dados: Phyton: Revista Internacional de Botánica Experimental
Autores: Zhang,JT; Xu,B; Li,M.
The content of active compounds in Glycyrrhiza uralensis may vary among populations in different regions, and be influenced by environmental variables. We determined the effects of soil and climate on contents of glycyrrhizic acid and liquiritin in various populations of Glycyrrhiza uralensis. Fifty individuals from 5 rangeland populations in arid and semi-arid regions of North China were collected and analyzed. The contents of glycyrrhizic acid and liquiritin were determined using the HPLC method. Contents of glycyrrhizic acid and liquiritin varied significantly among populations as follows: Chifeng &gt; Hangjinqi &gt; Minqin &gt; Aletai &gt; Kashi. These contents were significantly correlated with soil nutrients (e.g. P, K, N), organic matter, and annual...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Licorice; Glycyrrhizic acid; Liquiritin; Soil nutrients; Precipitation; Glycyrrhiza uralensis; China.
Ano: 2011
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572011000200007

Simulating impacts of irrigation on the hydrology of the Karagan Lagoon in Sri Lanka
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Stanzel,   Philipp; Oze,   Alexander; Smakhtin,   Vladimir U.; Boelee,   Eline; Droogers,   Peter.
Tipo: Working or Discussion Paper
Palavras-chave: Lagoons; Hydrology; Irrigation effects; Simulation models; Sensitivity analysis; Irrigation programs; Catchment areas; Tanks; Runoff; Precipitation; Evaporation; Seepage; Climate; Evapotranspiration; Paddy fields; Agricultural and Food Policy; Agricultural Finance; Crop Production/Industries; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2002
URL: http://purl.umn.edu/92698

Climate change impacts on hydrology and water resources of the Upper Blue Nile River Basin, Ethiopia
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Kim,   Ungtae; Kaluarachchi,   Jagath J.; Smakhtin,   Vladimir U.
The report evaluates the impacts of climate change on the hydrological regime and water resources of the Blue Nile River Basin in Ethiopia. It starts from the construction of the climate change scenarios based on the outcomes of several general circulation models (GCMs), uses a simple hydrological model to convert theses scenarios into runoff, and examines the impacts by means of a set of indices. The results, however uncertain with existing accuracy of climate models, suggest that the region is likely to have the future potential to produce hydropower, increase flow duration, and increase water storage capacity without affecting outflows to the riparian countries in the 2050s.
Tipo: Report
Palavras-chave: Climate change; Hydrology; River basins; Runoff; Precipitation; Models; Dams; Operating policies; Water power; Drought; Analysis; Africa; Ethiopia; Egypt; Sudan; Upper Blue Nile River Basin; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Land Economics/Use; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2008
URL: http://purl.umn.edu/53025

Trees and water: smallholder agroforestry on irrigated lands in Northern India
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Zomer,   Robert J.; Bossio,   Deborah A.; Trabucco,   Antonio; Yuanjie,   Li; Gupta,   Diwan C.; Singh,   Virendra P.
Trees are increasingly grown on-farm to supply wood and biomass needs within developing countries. Over the last several decades, within the irrigated rice-wheat growing lands of northern India, fast-growing poplar trees have been planted on tens of thousands of small farms. Recent debate regarding afforestation has raised the issue that water use is often increased when trees are planted. This ongoing debate focuses primarily on afforestation or reforestation of upland and rain-fed agricultural areas, and off-site impacts such as reduced streamflow. Adoption of poplar agroforestry in northern India, in contrast, is occurring in areas where land and water are already intensively used and managed for agricultural production. This study based on farmer...
Tipo: Report
Palavras-chave: Trees; Populus deltoids; Agroforestry; Afforestation; Reforestation; Models; Water use; Water balance; Evapotranspiration; Precipitation; Remote sensing; Irrigation requirements; India; Agricultural and Food Policy; Agricultural Finance; Community/Rural/Urban Development; Crop Production/Industries; Environmental Economics and Policy; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/53067

Mapping drought patterns and impacts: a global perspective
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Eriyagama,   Nishadi; Smakhtin,   Vladimir U.; Gamage,   Nilantha.
The study examines the global pattern and impacts of droughts through mapping several drought-related characteristics - either at a country level or at regular grid scales. It appears that arid and semi-arid areas also tend to have a higher probability of drought occurrence. It is illustrated that the African continent is lagging behind the rest of the world on many indicators related to drought-preparedness and that agricultural economies, overall, are much more vulnerable to adverse societal impacts of meteorological droughts. The study also examines the ability of various countries to satisfy their water needs during droughts using storage-related indices.
Tipo: Report
Palavras-chave: Drought; Impact assessment; Indicators; Hydrology; Mapping; Climate change; River basins; Dams; Water scarcity; Disasters; Risks; Precipitation; Runoff; Soil degradation; Agricultural and Food Policy; Land Economics/Use.
Ano: 2009
URL: http://purl.umn.edu/57027

Generation of Simulated Daily Precipitation and Air and Soil Temperatures
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Mitchell,   Paul D.
This paper describes a maximum likelihood method using historical weather data to estimate a parametric model of daily precipitation and maximum and minimum air temperatures. Parameter estimates are reported for Brookings, SD, and Boone, IA, to illustrate the procedure. The use of this parametric model to generate stochastic time series of daily weather is then summarized. A soil temperature model is described that determines daily average, maximum, and minimum soil temperatures based on air temperatures and precipitation, following a lagged process due to soil heat storage and other factors.
Tipo: Working or Discussion Paper
Palavras-chave: Air temperatures; Maximum soil temperatures; Minimum soil temperatures; Parametric model; Precipitation; Soil heat storage; Stochastic time series; Resource /Energy Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/18503

Erosive rainfall in Rio do Peixe Valley in Santa Catarina, Brazil: Part I - Determination of the erosivity index
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Back,Álvaro J.; Pola,Augusto C.; Ladwig,Nilzo I.; Schwalm,Hugo.
ABSTRACT This study aimed to determine the rainfall erosivity index in the Valley of Rio do Peixe, in the state of Santa Catarina, Brazil. The data series of three rain gauge stations in the cities of Campos Novos, Videira, and Caçador were used to determine the rainfall erosivity based on the EI30 index and to adjust the equations in order to estimate the EI30 value from the rainfall coefficient. On average, it was observed that erosive rains represents 81.4-88.5% of the annual precipitation. The adjusted equations can be used to estimate rainfall erosivity in locations with only rainfall data. The regional equation specified for the erosivity estimation is EI30 = 74.23 Rc0.8087. The R factor is 8,704.8; 7,340.8; and 6,387.1 MJ mm ha-1 h-1 year-1 for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil loss; Soil conservation; Water erosion; Precipitation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001100774

Rainfall pattern and erosion potential in the physiographic regions of the state of Pernambuco, Brazil
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Pinheiro,Antonio G.; Souza,Thais E. M. dos S.; Montenegro,Suzana M. G. L.; Montenegro,Abelardo A. de A.; Guerra,Sérgio M. S.
ABSTRACT The objective of the present study was to characterize the spatial and temporal (2000-2015) rainfall pattern variability and erosive potential in the different physiographic regions of the state of Pernambuco, Brazil. Rainfall data series (3 to 12 years) from 25 weather stations of the state were analyzed. Erosive rainfall events (more than 10 mm depth) were considered to evaluate the annual erosivity index, monthly erosivity index (EI30), rainfall erosivity factor (R), and rainfall pattern. The inverse distance weighting (IDW) - inverse of the square of the distance - was used to create spatial interpolation and develop maps. The rainfall data from the weather stations showed average annual rainfall of 827 mm and average erosivity of 4,784 MJ mm...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Erosivity; Mapping; Rainfall characterization; Precipitation.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018001200849

Erosive rainfall in the Rio do Peixe Valley: Part III - Risk of extreme events
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Back,Álvaro J.; Pola,Augusto C.; Ladwig,Nilzo I.; Schwalm,Hugo.
ABSTRACT Understanding the risks of extreme events related to soil erosion is important for adequate dimensioning of erosion and runoff control structures. The objective of this study was to determine the rainfall erosivity with different return periods for the Valley of the Rio do Peixe in Santa Catarina state, Brazil. Daily pluviographic data series from 1984 to 2014 from the Campos Novos, and Videira meteorological stations and from 1986 to 2014 from the Caçador station were used. The data series of maximum annual rainfall intensity in 30 min, maximum annual erosive rainfall, and total annual erosivity were analyzed for each station. The Gumbel-Chow distributions were adjusted and their adhesions were evaluated by the Kolmogorov-Smirnov test at a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil conservation; Water erosion; Precipitation; Probability.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000100063

Simulation of wheat yield by nitrogen and nonlinearity of environmental conditions
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Trautmann,Ana P. B.; Silva,José A. G. da; Binelo,Manuel O.; Valdiero,Antonio C.; Henrichsen,Luana; Basso,Natiane C. F.
ABSTRACT Fuzzy logic can simulate wheat productivity by assisting crop predictability. The objective of the study is the use of fuzzy logic to simulate wheat yield in the conditions of nitrogen use, together with the effects of air temperature and rainfall, in the main cereal succession systems in Southern Brazil. The study was conducted in the years 2014, 2015 and 2016, in Augusto Pestana, RS, Brazil. The experimental design was a randomized block design with four repetitions in a 4 x 3 factorial scheme for N-fertilizer doses (0, 30, 60, 120 kg ha-1) and nutrient supply forms [100% in phenological stage V3 (third expanded leaf); (70%/30%) in the phenological stage V3/V6 (third and sixth expanded leaf) and; fractionated (70%/30%) at the phenological stage...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Temperature; Precipitation; Fuzzy logic; Modeling.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000100044

CORRELATION AMONG DAMAGES CAUSED BY YELLOW BEETLE, CLIMATOLOGICAL ELEMENTS AND PRODUCTION OF GUAVA ACCESSES GROWN IN ORGANIC SYSTEM
Provedor de dados: Revista Brasileira de Fruticultura
Autores: GALLI,JULIANA ALTAFIN; MICHELOTTO,MARCOS DONISETI; FISCHER,IVAN HERMAN; SOARES,MARIA BEATRIZ BERNARDES; MARTINS,ANTÔNIO LUCIO MELLO.
ABSTRACT The objective of this research was evaluate the damage caused by the yellow beetle on 85 guava accessions and correlations of the damage with the climatological elements and the production of fruit in an orchard of guava conducted in organic system. Ten leaves by access were analyzed containing the injury of insect attack. Each leaf had its foliar area measured by leaf area meter and, after obtaining the total area, the leaf was covered with duct tape, and measure again. The averages were compared by Scott-Knott test at 5% probability. The 15 accessions with highest average damage had the data submitted to the correlation with the minimum and maximum temperature, precipitation and relative humidity. The production was obtained by the number of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Psidium guajava; Costalimaita ferruginea; Temperature; Precipitation; Relative humidity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000300402

What are the main local drivers determining richness and fishery yields in tropical coastal fish assemblages?
Provedor de dados: Revista Brasileira de Zoologia
Autores: Souza,Cynthia D.; Batista,Vandick S.; Fabré,Nidia N.
ABSTRACT Seasonal ecological effects caused by temperature and photoperiod are typically considered minimal in the tropics. Nevertheless, annual climate cycles may still influence the distribution and abundance of tropical species. Here, we investigate whether seasonal patterns of precipitation and wind speed influence the structure of coastal fish assemblages and fishing yields in northeast Brazil. Research trips were conducted during the rainy and dry seasons using commercial boats and gear to sample the fish community. Diversity was analyzed using abundance Whittaker curves, diversity profiles and the Shannon index. Principal Component Analysis (PCA) was used to analyze associations between the abundance of species and various environmental variables...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artisanal fishing; Fishes; Wind; Precipitation; Seasonality; Gillnet.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100304

Ecological niche differentiation between Acanthodactylus micropholis and A. khamirensis (Sauria: Lacertidae) in southern Iran
Provedor de dados: Revista Brasileira de Zoologia
Autores: Heidari,Nastaran.
ABSTRACT Acanthodactylus micropholis Heidari, Rastegar-Pouyani, Rastegar-Pouyani &amp; Rajabizadeh, 2013 and A. khamirensis Blanford, 1874 are genetically and morphologically distinct, but their ecological differentiation has not previously been evaluated. The ecological niche models of these two sister species Acanthodactylus were reconstructed using climate and geographical data. Species distribution modeling for A. micropholis and A. khamirensis was used to make predictions and showed that most parts of southern and southeastern Iran are suitable for the distribution of both species. Habitat suitability was mostly dependent upon minimum temperature of the coldest month and seasonal precipitation for A. micropholis and A. khamirensis, respectively. Niche...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecological species concept; Fringed-toed lizard; Iranian Plateau; Precipitation; Temperature.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702019000100308

Climatic effects on sugarcane ripening under the influence of cultivars and crop age
Provedor de dados: Scientia Agricola
Autores: Cardozo,Nilceu Piffer; Sentelhas,Paulo Cesar.
The lack of information about the effects of cultivars, crop age and climate on the sugarcane (Saccharum ssp.) crop yield and quality has been the primary factor impacting the sugar-ethanol sector in Brazil. One of the processes about which we do not have a satisfactory understanding is sugarcane ripening and the effects of cultivars, crop age and climate on that. Sugarcane ripening is the process of sucrose accumulation in stalks, which is heavily influenced by several factors, mainly by climatic conditions such as air temperature and water deficits. Because it is a complex process, studies of the variables involved in sugarcane ripening can provide important information, resulting in a better use of commercial cultivars, bringing advantages to growers,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp; Air temperature; Precipitation; Water deficit; Sucrose.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000600011

Weathering deterioration in pre-harvest of soybean seeds: physiological, physical, and morpho-anatomical changes
Provedor de dados: Scientia Agricola
Autores: Pinheiro,Daniel Teixeira; Dias,Denise Cunha Fernandes dos Santos; Medeiros,André Dantas de; Ribeiro,João Paulo Oliveira; Silva,Felipe Lopes da; Silva,Laércio Junio da.
ABSTRACT: Successive cycles of water absorption and loss favor weathering deterioration, one of the main factors that affect the quality of soybean seeds. This study evaluated the physiological, physical, and morpho-anatomical changes in soybean seeds under weathering deterioration at the pre-harvest phase. Six soybean cultivars (BMX Apolo, DM 6563, NS 5959, NA 5909, BMX Potência, and TMG 1175) were produced in a greenhouse and underwent weathering deterioration through a rainfall simulation system, applying 0, 60, 120, and 180 mm of precipitation at pre-harvest phase. Each rainfall level was divided into two applications at an interval of 72 h: 60 mm (30 + 30), 120 mm (60 + 60), and 180 mm (90 + 90). After harvest, the seeds were evaluated for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max L.; X-ray; Anatomy; Precipitation; Physiological quality.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000700602

Availability of soil water and water use by corn, sorghum, soybean and mungbeans
Provedor de dados: Thai Agricultural Research Repository
Autores: Seri Sukkij; Prasong Banthao; Somporn Isranurak.
10 tables
Palavras-chave: Corn; Maize; Sorghum; Soybeans; Mungbeans; Soil water; Water use; Precipitation; Yields; ข้าวโพด; ข้าวฟ่าง; น้ำในดิน; การใช้น้ำ; ถั่วเหลือง; ถั่วเขียว.
Ano: 1977
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3928

Population fluctuation of fruit fly Anastrepha spp. (Díptera: Tephritidae) in guava (Psidium guajava L.) accesses produced in organic system
Provedor de dados: Acta Agronómica
Autores: Galli,Juliana Altafin; Michelotto,Marcos Doniseti; Bernardes-Soares,Maria Beatriz; Mello-Martins,Antonio Lucio; Fischer,Ivan Herman.
Abstract Guava   (Psidium guajava L.) presented prominence among the tropical fruit. Guava exports are still unimpressive, because of the quarantine pests, among them the fruit flies. The present research had as objective to evaluate the population fluctuation of fruit flies Anastrepha spp. and the fruits infestation caused in guava accesses cultivated in organic system, and study the possible correlations between this pest and meteorological factors. To estimate population fluctuation, 20 yellow sticky traps were used. The reviews were initiated in April 2013, for 378 days. The traps were kept in the field for the entire duration of the experiment, and they were reviewed every 14 days in most cases, during replacement of traps for new ones. With the data,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Psidium guajava; Precipitation; Temperature; Varietal resistance.
Ano: 2019
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122019000100009

Hydroclimatic variables associated with El Nino and La Nina events at the Curuá-Una hydroelectric reservoir, Central Amazonia
Provedor de dados: Acta Amazonica
Autores: VALE,Roseilson Souza do; GOMES,Ana Carla dos Santos; SANTANA,Raoni Aquino Silva de; TÓTA,Júlio; MILLER,Scott Dennis; SOUSA,Rodrigo Augusto Ferreira de.
ABSTRACT The anomalies of Sea Surface Temperature (SST) influence rainfall and therefore the regime of the rise and fall in the level of the rivers in the Amazon region. The aim of this study was to investigate the influence of the El Nino-Southern Oscillation (ENSO) on hydroclimatic variables and identify the existence of trends on these variables in the Curuá-Una hydroelectric reservoir in the West of the State of Pará. It was used 27 years of monthly precipitation and water flow data to identify possible trends using a non-parametric test (Mann Kendall, p&lt;0.05), and the standardized precipitation index (SPI) was also calculated. The results indicate a positive tendency of the influence of the ENSO on hydroclimatic variables, although it was observed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drought; Precipitation; SPI; Level.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000300303

Microphysical evidence of the transition between predominant convective/stratiform rainfall associated with the intraseasonal oscillation in the Southwest Amazon
Provedor de dados: Acta Amazonica
Autores: Albrecht,Rachel Ifanger; Silva Dias,Maria Assunção Faus da.
The distinction between convective and stratiform precipitation profiles around various precipitating systems existent in tropical regions is very important to the global atmospheric circulation, which is extremely sensitive to vertical latent heat distribution. In South America, the convective activity responds to the Intraseasonal Oscillation (IOS). This paper analyzes a disdrometer and a radar profiler data, installed in the Ji-Paraná airport, RO, Brazil, for the field experiment WETAMC/LBA &amp;amp; TRMM/LBA, during January and February of 1999. The microphysical analysis of wind regimes associated with IOS showed a large difference in type, size and microphysical processes of hydrometeor growth in each wind regime: easterly regimes had more turbulence...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Intraseasonal oscillation; Drop size distribution; Precipitation; Profiler radar; Disdrometer.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672005000200007

COMPOSITION, TROPHIC STRUCTURE AND ACTIVITY PATTERNS OF THE UNDERSTORY BATS OF THE BITACO FOREST RESERVE
Provedor de dados: Acta Biológica Colombiana
Autores: FERRO MUÑOZ,Natalia; GIRALDO,Alan; MURILLO GARCÍA,Oscar Enrique.
ABSTRACT The present study describes composition and trophic structure, and assesses the effect of environmental temperature and rainfall on the pattern of nocturnal activity of understory bats in an Andean forest, in the first half of the night. Seven sampling events were conducted, lasting six nights each one. Ten mist nets were used to capture bats, which were checked every hour between 18:00 and 00:00 hours. Bat species, sex and capture time were registered. In addition, environmental temperature and rainfall were also recorded during sampling. The bat assemblage of the understory of the study area was represented mostly by frugivore species, within this guild there was a lower richness of nomadic than sedentary species. For the first half of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environmental temperature; Precipitation; Trophic levels.
Ano: 2018
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2018000200170

The influence of El Niño and edge effects on the reproductive phenology and floral visitors of Eschweilera tetrapetala Mori (Lecythidaceae), an endemic species of the Atlantic Forest of northeastern Brazil
Provedor de dados: Acta Botanica Brasilica
Autores: Menezes,Isiara Silva; Couto-Santos,Ana Paula Lima do; Funch,Ligia Silveira.
ABSTRACT We compared the reproductive phenology and floral visitors of Eschweilera tetrapetala growing along the edge and in the interior of a submontane forest in the Chapada Diamantina mountains, Bahia State, Brazil. We sought to determine if there were inter-annual differences in intensity and seasonality associated with environmental conditions, and if there were differences in floral visitors between the two environmental contexts. Phenological observations were performed for three years, and included the occurrence of an El Niño event. We applied circular statistics to detect seasonal trends, performed cross correlations between phenophases and climate, Kruskal-Wallis and Wilcoxon signed-rank tests for inter-annual variation, and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: El Niño; Eschweilera tetrapetala; Floral visitors; Linear edge effects; Phenology; Precipitation; Seasonality.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000100001

Simulate rain about action insecticide flonicamid in the control of the cotton aphid - doi: 10.4025/actasciagron.v33i4.11160
Provedor de dados: Acta Scientiarum: Agronomy
Autores: Fortunato, Roni Paulo; Instituto Federal do Mato Grosso do Sul; Degrande, Paulo Eduardo; Instituto Federal do Mato Grosso do Sul; Fonseca, Paulo Rogério Beltramin da; Instituto Federal do Mato Grosso do Sul.
The cotton production system in Brazil concentrates on the area of the cerrado, characterized by frequent rains that interfere in the effectiveness of the necessary sprays during its cycle. The objective of the work was to evaluate simulate rain of 15 mm in 4 hours after spraying in the control of Aphis gossypii with insecticide flonicamid. Plants of Gossypium hirsutum were cultivated in pots containing soil as substrate in greenhouse conditions. The pots were arranged in randomized complete design with seven treatments and five replicates, consisting of: test without insecticide spraying, without insecticide spraying with rain, flonicamid spraying with simulate rain of 15 mm after 30 minutes, 1, 2 and 4 hours after spraying. Equivalent insecticide was...
Tipo: Pesquisa em condições controladas
Palavras-chave: 5.01.02.00-1 pest management; Chemical control; Precipitation Fitossanidade pest management; Chemical control; Precipitation.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/11160

Status and sustainability challenges of agricultural water usage in Bangladesh
Provedor de dados: Agricultural Engineering International : The CIGR e-journal
Autores: Amin, M. G. Mostofa.
Maintaining sustainability in agricultural water usage is a critical concern particularly when the burgeoning population demands more food while adverse climate change impacts water availability. Despite this, the climate-water-crop nexus is still poorly understood in many regions throughout the globe. This study was conducted to quantify current agricultural water use in Bangladesh, one of the most climate-vulnerable countries, and to assess its sustainability challenges. The number of crops, cropping area, yield, water use, long-term daily rainfall, daily river stage and weekly groundwater level data were collected and statistically analyzed. This study revealed that the two most drought-prone northwest divisions export virtual water embedded in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Virtual water transport; Climate change; Water security; Groundwater; Surface water; Precipitation; Drought index.
Ano: 2021
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6973

Development of an annual drought classification system based on drought severity indexes
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: LIMA,RAFAEL P.C.; SILVA,DEMETRIUS D. DA; MOREIRA,MICHEL C.; PASSOS,JÉSSICA B.M.C.; COELHO,CLÍVIA D.; ELESBON,ABRAHÃO A.A.
Abstract: In order to characterize the occurrence and intensity of droughts in the Doce River Basin, as well as to develop a system for its classification, four different drought indexes were evaluated: Percent of Normal Precipitation (PNP), Deciles Method (DM), Rainfall Anomaly Index (RAI) and Standardized Precipitation Index (SPI). The indices were calculated annually, based on precipitation data from 89 rainfall stations of the Brazilian National Water Agency (ANA). Nine analysis units (AUs) were determined in the basin and the Thiessen Polygons method was used to obtain the average precipitation in the respective drainage areas. The indices were calculated for each AU and then related to the drought intensity classes. An overall classification of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Climatic condition; Doce river; Precipitation; Rainfall season; River basin.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100852

Purification of inulinases by changing the ionic strength of the medium and precipitation with alcohols
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: GOLUNSKI,SIMONE; SILVA,MARCELI F.; MARQUES,CAMILA T.; ROSSETO,VANUSA; KAIZER,ROSILENE R.; MOSSI,ALTEMIR J.; RIGO,DIANE; DALLAGO,ROGÉRIO M.; DI LUCCIO,MARCO; TREICHEL,HELEN.
ABSTRACT The present study evaluated the purification of inulinase by changing the ionic strength of the medium by addition of NaCl and CaCl2 followed by precipitation with n-propyl alcohol or iso-propyl alcohol. The effects of the concentration of alcohols and the rate of addition of alcohols in the crude extract on the purification yield and purification factor were evaluated. Precipitation caused an activation of enzyme and allowed purification factors up to 2.4-fold for both alcohols. The purification factor was affected positively by the modification of the ionic strength of the medium to 0.5 mol.L-1 NaCl before precipitation with the alcohol (n-propyl or iso-propyl). A purification factor of 4.8-fold and an enzyme yield of 78.1 % could be achieved by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Inulinases; Ionic strength; Precipitation; Low cost.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100057

Latitudinal Analysis of Rainfall Intensity and Mean Annual Precipitation in Chile
Provedor de dados: Chilean Journal of Agricultural Research
Autores: Pizarro,Roberto; Valdés,Rodrigo; García-Chevesich,Pablo; Vallejos,Carlos; Sangüesa,Claudia; Morales,Carolina; Balocchi,Francisco; Abarza,Alejandro; Fuentes,Roberto.
The study and analysis of precipitation has become a crucial tool in understanding the temporal and spatial behavior of water resources, in terms of availability and impact on extreme events. The objective of this study was to evaluate different rainfall parameters (intensities for 1-h duration D = 1 h and return periods of T = 5 and 100 yr, and mean annual precipitation) for different latitudinal and climatic zones in Chile. We analyzed the information recorded on thousands of pluvial bands and rain gauges for 49 stations; this because it is unclear how rainfall intensities change along the country (though total amounts do), in addition to a lack of literature focused on ranges and amounts on the behavior of rainfall variables. The Gumbel probability...
Tipo: Journal article
Palavras-chave: Precipitation; Frequency-duration-intensity curves; IDF curves; Rainfall intensity.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000200014