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Mostrando ítems 1-20 de 83

    • A comparison between support vector machine and water Cloud model for estimating crop leaf area index 

      Hosseini, Mehdi; McNairn, Heather; Mitchell, Scott; Robertson, Laura Dingle; Davidson, Andrew; Ahmadian, Nima; Bhattacharya, Avik; Borg, Erik; Conrad, Christopher; Dabrowska Zielinska, Katarzyna; De Abelleyra, Diego; Gurdak, Radoslaw; Kumar, Vineet; Kussul, Nataliia; Mandal, Dipankar; Rao, Y.S.; Saliendra, Nicanor; Shelestov, Andrii; Spengler, Daniel; Veron, Santiago Ramón; Homayouni, Saeid; Becker Reshef, Inbal (MDPI, 2021-04-01)
      The water cloud model (WCM) can be inverted to estimate leaf area index (LAI) using the intensity of backscatter from synthetic aperture radar (SAR) sensors. Published studies have demonstrated that the WCM can accurately ...

    • A land cover map of Latin America and the Caribbean in the framework of the SERENA project 

      Blanco, Paula Daniela; Colditz, Rene R.; López Saldaña, Gerardo; Hardtke, Leonardo Andrés; Llamas, Ricardo M.; Mari, Nicolás Alejandro; Fischer, Maria De Los Angeles; Caride, Constanza; Aceñolaza, Pablo Gilberto; del Valle, Hector Francisco; Lillo Saavedra, Mario F.; Coronato, Fernando Raul; Opazo, Sergio A.; Morelli, Fabiano; Anaya Acevedo, Jesús Adolfo; Sione, Walter Fabian; Zamboni, Pamela; Barrena Arroyo, Victor (Elsevier, 2013-05-15)
      Land cover maps at different resolutions and mapping extents contribute to modeling and support decision making processes. Because land cover affects and is affected by climate change, it is listed among the 13 terrestrial ...

    • A multi-resolution approach to national-scale cultivated area estimation of soybean 

      King, LeeAnn; Adusei, Bernard; Stehman, Stephen V.; Potapov, Peter V.; Xiao-Peng, Song; Krylov, Alexander; Di Bella, Carlos Marcelo; Loveland, Thomas R.; Johnson, David M.; Hansen, Matthew C. (2017-06)
      Satellite remote sensing data can provide timely, accurate, and objective information on cultivated area by crop type and, in turn, facilitate accurate estimates of crop production. Here, we present a generic multi-resolution ...

    • Actualización del algoritmo de estimación de la evapotranspiración real para el sensor VIIRS-Suomi NPP 

      Di Bella, Carlos Marcelo; Oricchio, Patricio; Gusmerotti, Lucas Alberto; Texeira González, Marcos Alexis (Asociación Argentina de Ecología, 2019-12)
      Para estudiar, analizar y manejar los agroecosistemas a distintas escalas espaciales y temporales es necesario estimar la evapotranspiración real (ETR). En este trabajo actualizamos los algoritmos de estimación por medio ...

    • Agrohydrological analysis of groundwater recharge and land use changes in the Pampas of Argentina 

      Kroes, Joop; van Dam, Jos; Supit, Iwan; De Abelleyra, Diego; Veron, Santiago Ramón; de Wit, Allard; Boogaard, Hendrik; Angelini, Marcos Esteban; Damiano, Francisco; Groenendijk, Piet; Wesseling, Jan; Veldhuizen, Ab (Elsevier, 2019-03)
      This paper studies the changes of groundwater, climate and land use in the Pampas of Argentina. These changes offer opportunities and threats. Lowering groundwater without irrigation causes drought and successive crop and ...

    • Ajuste de modelos logísticos a la tasa de incremento de severidad de manchas foliares ocasionadas por Alternaria tenuissima en arándano = Logistic models adjustment to growth rate of severity of blueberry leaf spot caused by Alternaria tenuissima 

      Moschini, Ricardo Carlos; Bombelli, Enrique Carlos; Wright, Eduardo Roberto; López, María Virginia; Perez Canone, Huber Ignacio; Carmona, J.D.; Varsallona, Bruno; Barberis, Juan Guillermo; Fabrizio, María del Carmen; Rivera, Marta Carolina (Asociación Argentina de Horticultura, 2014)
      La severidad de manchas foliares, ocasionadas por Alternaria tenuissima en arándano, fue observada en el cultivar O’Neal en San Pedro (59º 38’ S; 33º 44’ O), Concordia (31º 19’ S; 58º 5’ O) y Gualeguaychú (33º 01’ S; ...

    • Ammonia emissions from the agriculture sector in Argentina; 2000–2012 

      Castesana, Paula Soledad; Dawidowski, Laura Elena; Finster, Laura; Gómez, Darío R.; Taboada, Miguel Angel (Elsevier, 2018-04)
      Agriculture is one of the key economic sectors in Argentina and, in the last decades, the increase in prices and competitiveness of some grains has imposed important changes. In this process, crop cultivation occupied ...

    • An insight into the patterns and controls of the structure of South American Chaco woodlands 

      Ferraina, Antonella; Baldi, German; De Abelleyra, Diego; Grosfeld, Javier; Veron, Santiago Ramón (Wiley, 2022)
      Logging, grazing, wood extraction, and anthropogenic fires are pervasive throughout the subtropical dry vegetation of South America leading to changes in woodlands structure and ultimately its degradation. The Chac ohaco ...

    • Analysis of biophysical variables in an onion crop (Allium cepa L.) with nitrogen fertilization by sentinel-2 observations 

      Casella, Alejandra An; Orden, Luciano; Pezzola, Nestor Alejandro; Bellaccomo, Maria Carolina; Winschel, Cristina Ines; Caballero, Gabriel; Delegido, Jesus; Navas Gracia, Luis Manuel; Verrelst, Jochem (MDPI, 2022-08-11)
      The production of onions bulbs (Allium cepa L.) requires a high amount of nitrogen. Ac cording to the demand of sustainable agriculture, the information-development and communication technologies allow for improving the ...

    • Analysis of preharvest meteorological conditions in relation to concentration of fumonisins in kernels of two genetically different maize hybrids 

      Moschini, Ricardo; Borsarelli, M.; Martinez, Malvina Irene; Presello, Daniel Alberto; Ferraguti, Facundo Javier; Cristos, Diego Sebastian; Rojas, Dante Emanuel (Springer, 2020-09-25)
      The effects of meteorological conditions around silking (Si) and physiological maturity (PM) on production of fumonisins (FB=FB1 + FB2) in maize kernels were analyzed. Kernel FB contents were determined on kernel samples ...

    • Apropiación humana de la producción primaria en el Chaco Seco 

      Rueda, Carla V.; Baldi, Germán; Veron, Santiago Ramón; Jobbagy Gampel, Esteban Gabriel (Asociación Argentina de Ecología, 2013-04)
      El Chaco Seco experimenta altas tasas de deforestación y transformación productiva. Estimamos la magnitud de la apropiación humana de la productividad primaria neta (PPN) aérea de esta región por vías directas (producción ...

    • Are remote sensing evapotranspiration models reliable across South American ecoregions? 

      Melo, D.C.D.; Anache, J.A.A.; Borges, V.P.; Miralles, D.G.; Martens, B.; Fisher, J.B.; Nobrega, R.C.B.; Moreno, A.; Cabral, O.M.R.; Rodrigues, T.R.; Bezerra, B.; Silva, C.M.S.; Meira Neto, A.A.; Moura, M.S.B.; Marques, T.V.; Campos, S.; Nogueira, J.S.; Rosolem, R.; Souza, R.; Antonino, A.C.D.; Holl, D.; Galleguillos, M.; Perez-Quezada, J.F.; Verhoef, A.; Kutzbach, L.; Lima, J.R.S.; Souza, E.S.; Gassman, M.I.; Perez, C.F.; Tonti, N.; Posse Beaulieu, Gabriela; Rains, D.; Oliveira, P.T.S.; Wendland, E. (Wiley, 2021-11-01)
      Many remote sensing-based evapotranspiration (RSBET) algorithms have been proposed in the past decades and evaluated using flux tower data, mainly over North America and Europe. Model evaluation across South America has ...

    • Arsenic and fluoride in water in northwestern Buenos Aires : their association with natural landscape elements 

      Alconada Magliano, Margarita Maria; Damiano, Francisco; Carrillo-Rivera, José Joel; Fagundo-Castillo, Juan Reynerio (2017-02)
      Numerous publications analyze the origin of Arsenic and Fluoride, their behavior and distribution in groundwater indicating the importance in understanding the relation between their occurrence with other physical and ...

    • Assessment of multi - date sentinel - 1 polarizations and GLCM texture features capacity for onion and sunflower classification in an irrigated valley: An object level approach 

      Caballero, Gabriel; Platzech, Gabriel; Pezzola, Nestor Alejandro; Casella, Alejandra An; Winschel, Cristina Ines; Silva, Samanta; Ludueña, Emilia; Pasqualotto, Nieves; Delegido, Jesús (MDPI, 2020-06-13)
      The objective of this work is to evaluate the capacity of the C-band Synthetic Aperture Radar (SAR) time series imagery, acquired by the European satellite Sentinel-1 (S1), for the agriculture crop classification and its ...

    • Assessment of the soil water content in the Pampas region using SWAT 

      Havrylenko, Sofí­a Beatriz; Bodoque del Pozo, José María; Srinivasan, R.; Zucarelli, G.V.; Mercuri, Pablo Alberto (2016-02)
      La región Pampeana ha experimentado recientemente una expansión de la agricultura hacia ambientes más frágiles, que se ha asociado con un aumento en la frecuencia de las sequías que afectan a toda la región. En el presente ...

    • Attribution of carbon dioxide fluxes to crop types in a heterogeneous agricultural landscape of Argentina 

      Posse Beaulieu, Gabriela; Richter, Klaus; Lewczuk, Nuria Andrea; Cristiano, Piedad Maria; Gattinoni, Natalia Noemí; Rebella, Cesar Manuel; Achkar, Antonio (Springer, 2014-10)
      The increasing proportion of agricultural lands worldwide makes it necessary to intensify the research concerning the carbon exchange at agricultural sites. In order to determine the Net Ecosystem Exchange (NEE) in an ...

    • Barriers and solutions to conducting large international, interdisciplinary research projects 

      Pischke, Erin C.; Knowlton, Jessie L.; Phifer, Colin C.; Gutierrez Lopez, José; Propato, Tamara Sofía; Eastmond, Amarella; Martins de Souza, Tatiana; Kuhlberg, Mark; Picasso Risso, Valentin; Veron, Santiago Ramón; Garcia, Carlos; Chiappe, Marta; Halvorsen, Kathleen E. (Springer, 2017-12)
      Global environmental problems such as climate change are not bounded by national borders or scientific disciplines, and therefore require international, interdisciplinary teamwork to develop understandings of their causes ...

    • Building a Data Set over 12 Globally Distributed Sites to Support the Development of Agriculture Monitoring Applications with Sentinel-2 

      Bontemps, Sophie; Arias, Marcela; Cara, Cosmin; Dedieu, Gérard; Guzzonato, Eric; Hagolle, Olivier; Inglada, Jordi; Matton, Nicolas; Morin, David; Popescu, Ramona; Rabaute, Thierry; Savinaud, Mickael; Sepulcre, Guadalupe; Valero, Silvia; Ahmad, Ijaz; Bégué, Agnès; Wu, Bingfang; De Abelleyra, Diego; Diarra, Alhousseine; Dupuy, Stéphane; French, Andrew; Akhtar, Ibrar ul Hassan; Kussul, Nataliia; Lebourgeois, Valentine; Le Page, Michel; Newby, Terrence; Savin, Igor; Veron, Santiago Ramón; Koetz, Benjamin; Defourny, Pierre (MDPI, 2015-12)
      Developing better agricultural monitoring capabilities based on Earth Observation data is critical for strengthening food production information and market transparency. The Sentinel-2 mission has the optimal capacity for ...

    • Carbon and water vapor balance in a subtropical pine plantation 

      Posse Beaulieu, Gabriela; Lewczuk, Nuria; Richter, Klaus; Cristiano, Piedad María (2016-10)
      Afforestation has been proposed as an effective tool for protecting primary and/or secondary forests and for mitigating atmospheric CO2. However, the dynamics of primary productivity differs between plantations and natural ...

    • Carbon dioxide fluxes on a soybean field in Argentina: influence of crop growth stages 

      Posse Beaulieu, Gabriela; Richter, Klaus; Corin, Jorgelina Mariana; Lewczuk, Nuria Andrea; Achkar, Antonio; Rebella, Cesar Manuel (Bentham Open, 2010)
      CO2 fluxes were measured in a soybean field in the Province of Buenos Aires, Argentina, with an eddy covariance system consisting of a CO2/H2O infrared gas analyzer and a sonic anemometer. The measurements were carried out ...