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Registro Completo |
Biblioteca(s): |
Embrapa Uva e Vinho. |
Data corrente: |
07/01/2020 |
Data da última atualização: |
11/05/2020 |
Tipo da produção científica: |
Folder/Folheto/Cartilha |
Autoria: |
NACHTIGALL, G. R.; HAWERROTH, F. J. |
Afiliação: |
GILMAR RIBEIRO NACHTIGALL, CNPUV; FERNANDO JOSE HAWERROTH, CNPUV. |
Título: |
Boletim Agroclimático - dezembro/2019. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Vacaria, RS: Estação Experimental de Fruticultura de Clima Temperado, dez. 2019. |
Idioma: |
Português |
Conteúdo: |
No período de agosto a dezembro de 2019 verificou-se situação muito similar para as temperaturas máximas e mínimas nos municípios de Bom Jesus, Vacaria, Lagoa Vermelha e Caxias do Sul, com ocorrência de picos de altas temperaturas (superiores a 25°C) seguidos por baixas temperaturas (inferiores a 7°C) no período de floração da macieira, com intensidades superiores aos dois últimos anos (Figura 1). |
Palavras-Chave: |
Bacccs; Boletim agroclimático; Boletim agroclimático de Campos de Cima da Serra (Bacccs). |
Thesagro: |
Clima; Temperatura. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/208305/1/Boletim-Agroclimatico-dez-2019.pdf
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Marc: |
LEADER 00990nam a2200181 a 4500 001 2118318 005 2020-05-11 008 2019 bl uuuu u0uu1 u #d 100 1 $aNACHTIGALL, G. R. 245 $aBoletim Agroclimático - dezembro/2019.$h[electronic resource] 260 $aVacaria, RS: Estação Experimental de Fruticultura de Clima Temperado, dez. 2019.$c2019 520 $aNo período de agosto a dezembro de 2019 verificou-se situação muito similar para as temperaturas máximas e mínimas nos municípios de Bom Jesus, Vacaria, Lagoa Vermelha e Caxias do Sul, com ocorrência de picos de altas temperaturas (superiores a 25°C) seguidos por baixas temperaturas (inferiores a 7°C) no período de floração da macieira, com intensidades superiores aos dois últimos anos (Figura 1). 650 $aClima 650 $aTemperatura 653 $aBacccs 653 $aBoletim agroclimático 653 $aBoletim agroclimático de Campos de Cima da Serra (Bacccs) 700 1 $aHAWERROTH, F. J.
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Embrapa Uva e Vinho (CNPUV) |
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Registro Completo
Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
18/01/2024 |
Data da última atualização: |
23/01/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
JARDIM, A. M. da R. F.; MORAIS, J. E. F. de; SOUZA, L. S. B. de; MARIN, F. R.; MOURA, M. S. B. de; MORELLATO, L. P. C.; MONTENEGRO, A. A. de A.; OMETTO, J. P. H. B.; LIMA, J. L. M. P. de; DUBEUX JÚNIOR, J. C. B.; SILVA, T. G. F. da. |
Afiliação: |
ALEXANDRE MANIÇOBA DA ROSA FERRAZ JARDIM, UFRPE; JOSÉ EDSON FLORENTINO DE MORAIS, UFRPE, Serra Talhada, PE; LUCIANA SANDRA BASTOS DE SOUZA, UFRPE, Serra Talhada, PE; FABIO RICARDO MARIN, USP; MAGNA SOELMA BESERRA DE MOURA, CPATSA; LEONOR PATRICIA CERDEIRA MORELLATO, UNESP, Rio Claro, SP; ABELARDO ANTÔNIO DE ASSUNÇÃO MONTENEGRO, UFRPE; JEAN PIERRE HENRY BALBAUD OMETTO, INPE; JOÃO L. M. P. DE LIMA, MARE—Marine and Environmental Sciences Centre, ARNET – Aquatic Research Network, Department of Civil Engineering, Faculty of Sciences and Technology; JOSÉ CARLOS BATISTA DUBEUX JÚNIOR, North Florida Research and Education Center, University of Florida; THIERES GEORGE FREIRE DA SILVA, Department of Agricultural Engineering, Federal Rural University of Pernambuco, Serra Talhada, PE. |
Título: |
Sink or carbon source? how the Opuntia cactus agroecosystem interacts in the use of carbon, nutrients and radiation in the Brazilian semi-arid region. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Journal of Hydrology, v. 625, 130121, 2023. |
DOI: |
https://doi.org/10.1016/j.jhydrol.2023.130121 |
Idioma: |
Inglês |
Conteúdo: |
Anthropogenic disturbances directly influence environmental processes and increase the concentration of carbon (C) in the atmosphere. Here, we compare the differences in the seasonality of the balance of carbon, energy, and radiation, as well as seek to identify the interrelationships between these environmental variables and their impact on the growth of Opuntia cactus. Data were acquired from an eddy covariance flux tower over a cactus crop agroecosystem (2019–2021) in the Brazilian semi-arid region. In addition, we use plant growth rates, carbon and nutrient stocks, evapotranspiration (ET) and water use efficiency (WUE), and radiation (RUE). We show that the closure of the surface energy balance was 71%, although there are minimal fluxes of available energy lost (29%) by unquantified processes. At all seasons, the highest net ecosystem CO2 exchange (NEE) rate was between 11:00–13:00 (�� 5.75 μmol m�� 2 s�� 1). During the dry and wet-dry season, there was the lowest daily gross primary productivity (GPP) (2.5 μmol m�� 2 s�� 1) and net radiation—Rn (217.97 W m�� 2). Ecosystem respiration was more expressive during the wet season (2.41 μmol m�� 2 s�� 1), and maximum diurnal value of 2.65 μmol m�� 2 s�� 1. Furthermore, the latent heat flux was higher during the wet season (114.68 W m�� 2) and lowered in the dry season (9.39 W m�� 2). The net assimilation rate showed higher values during the dry-wet transition. The dry season presented higher nutrient use efficiency and WUE (14.77 g m�� 2 mm�� 1). The highest ET occurred during the wet season (227 mm), and RUE was 81.48% higher than in the dry season. Overall, the cactus was a potential C sink during the three years of assessment (NEE: �� 377 g C m�� 2 year�� 1; GPP: 881 g C m�� 2 year�� 1). The results help us to understand that most of the Rn energy is used in the sensible heat flux (58% ratio). MenosAnthropogenic disturbances directly influence environmental processes and increase the concentration of carbon (C) in the atmosphere. Here, we compare the differences in the seasonality of the balance of carbon, energy, and radiation, as well as seek to identify the interrelationships between these environmental variables and their impact on the growth of Opuntia cactus. Data were acquired from an eddy covariance flux tower over a cactus crop agroecosystem (2019–2021) in the Brazilian semi-arid region. In addition, we use plant growth rates, carbon and nutrient stocks, evapotranspiration (ET) and water use efficiency (WUE), and radiation (RUE). We show that the closure of the surface energy balance was 71%, although there are minimal fluxes of available energy lost (29%) by unquantified processes. At all seasons, the highest net ecosystem CO2 exchange (NEE) rate was between 11:00–13:00 (�� 5.75 μmol m�� 2 s�� 1). During the dry and wet-dry season, there was the lowest daily gross primary productivity (GPP) (2.5 μmol m�� 2 s�� 1) and net radiation—Rn (217.97 W m�� 2). Ecosystem respiration was more expressive during the wet season (2.41 μmol m�� 2 s�� 1), and maximum diurnal value of 2.65 μmol m�� 2 s�� 1. Furthermore, the latent heat flux was higher during the wet season (114.68 W m�� 2) and lowered in the dry season (9.39 W m�� 2). The net assimilation rate showed higher values during the dry-wet transition. The dry season presented higher nutrient use efficiency and WUE (1... Mostrar Tudo |
Palavras-Chave: |
Agroecossistema; Cacto de sequeiro; Concentração de carbono; Covariância de redemoinho; Opuntia cactus; Planta CAM; Semiárido; Sumidouro ou fonte de carbono; Troca líquida de CO2. |
Thesagro: |
Caatinga; Cacto; Carbono; Ecossistema; Evapotranspiração. |
Thesaurus NAL: |
Evapotranspiration; Opuntia. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1161040/1/Sink-or-carbon-source-how-the-Opuntia-cactus-agroecosystem-interacts-in-the-use-of-carbon-nutrients-and-radiation-in-the-Brazilian-semi-arid-region.pdf
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Marc: |
LEADER 03353naa a2200445 a 4500 001 2161040 005 2024-01-23 008 2023 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.jhydrol.2023.130121$2DOI 100 1 $aJARDIM, A. M. da R. F. 245 $aSink or carbon source? how the Opuntia cactus agroecosystem interacts in the use of carbon, nutrients and radiation in the Brazilian semi-arid region.$h[electronic resource] 260 $c2023 520 $aAnthropogenic disturbances directly influence environmental processes and increase the concentration of carbon (C) in the atmosphere. Here, we compare the differences in the seasonality of the balance of carbon, energy, and radiation, as well as seek to identify the interrelationships between these environmental variables and their impact on the growth of Opuntia cactus. Data were acquired from an eddy covariance flux tower over a cactus crop agroecosystem (2019–2021) in the Brazilian semi-arid region. In addition, we use plant growth rates, carbon and nutrient stocks, evapotranspiration (ET) and water use efficiency (WUE), and radiation (RUE). We show that the closure of the surface energy balance was 71%, although there are minimal fluxes of available energy lost (29%) by unquantified processes. At all seasons, the highest net ecosystem CO2 exchange (NEE) rate was between 11:00–13:00 (�� 5.75 μmol m�� 2 s�� 1). During the dry and wet-dry season, there was the lowest daily gross primary productivity (GPP) (2.5 μmol m�� 2 s�� 1) and net radiation—Rn (217.97 W m�� 2). Ecosystem respiration was more expressive during the wet season (2.41 μmol m�� 2 s�� 1), and maximum diurnal value of 2.65 μmol m�� 2 s�� 1. Furthermore, the latent heat flux was higher during the wet season (114.68 W m�� 2) and lowered in the dry season (9.39 W m�� 2). The net assimilation rate showed higher values during the dry-wet transition. The dry season presented higher nutrient use efficiency and WUE (14.77 g m�� 2 mm�� 1). The highest ET occurred during the wet season (227 mm), and RUE was 81.48% higher than in the dry season. Overall, the cactus was a potential C sink during the three years of assessment (NEE: �� 377 g C m�� 2 year�� 1; GPP: 881 g C m�� 2 year�� 1). The results help us to understand that most of the Rn energy is used in the sensible heat flux (58% ratio). 650 $aEvapotranspiration 650 $aOpuntia 650 $aCaatinga 650 $aCacto 650 $aCarbono 650 $aEcossistema 650 $aEvapotranspiração 653 $aAgroecossistema 653 $aCacto de sequeiro 653 $aConcentração de carbono 653 $aCovariância de redemoinho 653 $aOpuntia cactus 653 $aPlanta CAM 653 $aSemiárido 653 $aSumidouro ou fonte de carbono 653 $aTroca líquida de CO2 700 1 $aMORAIS, J. E. F. de 700 1 $aSOUZA, L. S. B. de 700 1 $aMARIN, F. R. 700 1 $aMOURA, M. S. B. de 700 1 $aMORELLATO, L. P. C. 700 1 $aMONTENEGRO, A. A. de A. 700 1 $aOMETTO, J. P. H. B. 700 1 $aLIMA, J. L. M. P. de 700 1 $aDUBEUX JÚNIOR, J. C. B. 700 1 $aSILVA, T. G. F. da 773 $tJournal of Hydrology$gv. 625, 130121, 2023.
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