Resultados de búsqueda - "Decadence"

Contribución de los forrajes mejorados a la productividad ganadera en sistemas de doble propósito por Argel M., Pedro J.

“…However, these systems are characterized by low animal productivity due mainly to the use of low quality, poorly managed forages, and to low genetic potential of the animals. During recent decades the Tropical Forages Project of CIAT and national research and development institutions have identified and characterized forage grasses and legumes adapted to wide range of edaphic and climatic conditions that are in a process increasing adoptation and have significantly increased plantings of improved forages in regions of Panama, Mexico and Central America. …”
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Maize research at IAR Samaru por Ado, S., Showemimo, F., Alabi, S., Badu-Apraku, Baffour, Menkir, A., Usman, I., Abdullahi, U.S.

“…The Institute continues to collaborate with national and international research organizations in maize improvement. The five decades of collaborative maize research at Samaru have contributed to increased land area under maize, increased grain yield, and increased income to maize farmer.…”
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Facing climate variability in sub-Saharan Africa: analysis of climate-smart agriculture opportunities to manage climate-related risks por Zougmoré, Robert B., Partey, Samuel T., Ouédraogo, Mathieu, Torquebiau, Emmanuel F., Campbell, Bruce M.

“…Although some of them were already existing, the past decades have seen the development and promotion of climate-smart agriculture innovations such as the use of high yielding drought tolerant crop varieties, climate information services, agricultural insurance, agroforestry, water harvesting techniques, integrated soil fertility management practices, etc. …”
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Two centuries of hydroclimatic variability reconstructed from tree-ring records over the Amazonian Andes of Peru por Humanes Fuente, V., Ferrero, M. E., Muñoz, A. A., González Reyes, Á., Requena Rojas, E. J., Barichivich, J., Inga, J. G., Layme Huaman, Eva Trinidad

“…Both oscillatory modes can explain dry and humid periods observed within the reconstruction and are likely associated with the negative trends of rainfall in the short instrumental records and the increased drought recurrence in recent decades. Our results show that montane tropical tree rings can be used to reconstruct precipitation with exceptionally high fidelity, characterize the interannual to multidecadal variability, and identify remote forcings in the hydroclimate over the Andean Amazon Basin of Peru.…”
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A novel spotted fever group Rickettsia infecting Amblyomma parvitarsum (Acari: Ixodidae) in highlands of Argentina and Chile por Ogrzewalska, María, Nieri-Bastos, Fernanda A., Marcili, Arlei, Nava, Santiago, González-Acuña, Daniel, Muñoz-Leal, Sebastian, Ruiz-Arrondo, Ignacio, Venzal, José Manuel, Mangold, Atilio Jose, Labruna, Marcelo B.

“…The pathogenic role of this A. parvitarsum rickettsia cannot be discarded, since several species of tick-borne rickettsiae that were considered nonpathogenic for decades are now associated with human infections.…”
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Long-term coexistence of two invasive vespid wasps in NW Patagonia (Argentina) por Pereira, Ana Julia, Masciocchi, Maite, Corley, Juan Carlos

“…In Patagonia (Argentina) two non-native vespid wasps became established in the last decades. Vespula germanica was first detected in 1980, while V. vulgaris arrived some 30 years later. …”
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Revisiting the influence of learning in predator functional response, how it can lead to shapes different from type III por Bruzzone, Octavio Augusto, Aguirre, María Belén, Hill, Jorge Guillermo, Virla, Eduardo Gabriel, Logarzo, Guillermo Alejandro

“…However, after several decades, sigmoidal functional responses appear in the absence of alternative prey in most of the biological taxa studied. …”
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Seroprevalence and risk factors associated with bovine Leukemia virus infection in argentine beef cattle por Porta, Natalia Gabriela, Suarez Archilla, Guillermo, Miotti, Camila, Molineri, Ana Ines, Alvarez, Irene, Trono, Karina Gabriela, Signorini Porchiett, Marcelo Lisandro, Ruiz, Vanesa

“…These data deserve special attention because BLV infection in beef cattle seems to lead to a dissemination pattern similar to that observed during the last decades in dairy cattle, especially considering that Argentina is the sixth beef producer in the world, with about 5% of global beef production.…”
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Nitrogen deficiency in maize fields of the Southern Pampas does not affect kernel number but reduces weight per kernel por Moisés Domínguez, Clara, Andrade, Fernando Hector, Monzón, Juan Pablo, Reussi Calvo, Nahuel Ignacio, Cerrudo, Aníbal Alejandro

“…Nitrogen (N) requirement of maize has been increasing over the past decades, but there has been a lack ofadjustment in fertilization management practices across different regions in Argentina. …”
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Participatory surveillance reveals marsh deer mortality event during an extraordinary flood in Ibera Wetlands, Argentina por Orozco, María Marcela, Guillemi, Eliana Carolina, Minatel, Leonardo, Schapira, Andrea, Caimi, Karina Cynthia, Berra, Yanina, Blanco, Paula, Di Nucci, Dante, Farber, Marisa Diana, Fernandez, M. Pilar, Argibay, Hernán Darío

“…Here, using a participatory surveillance framework, we document the most extensive marsh deer mortality event observed in the last three decades occurring in Ibera ecoregion, Corrientes, Argentina. …”
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Yield determination of temperate maize hybrids with different end-uses : an ecophysiological analysis por Chazarreta, Yésica Daniela, Alvarez Prado, Santiago, Giménez, Víctor D., Carcedo, Ana Julia Paula, López, César G., Ciampitti, Ignacio Antonio, Otegui, María Elena

“…Maize (Zea mays L.) production in Argentina changed markedly during the last decade due to the widespread adoption of late sowing dates, expanding its productive area, and diversifying crop end-uses. …”
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Implementing a sustainable integrated agroforestry system for the cultivation of Ilex paraguariensis por Comolli, Luis, Schegg, Esteban, Infuleski, Cristian, Munaretto, Néstor, Fassola, Hugo Enrique, Von Wallis, Alejandra, Bulfe, Nardia María, González, Paola Analía, Barth, Sara Regina, Gauchat, Maria Elena, Wyss, Victor Fabio

“…However, these methods have yet to significantly alter the trajectory of mainstream agriculture. For over two decades, we have devoted our efforts to developing and refining a multispecies integrated agroforestry system for the sustainable cultivation of Ilex paraguariensis, “yerba mate,” in the subtropical north-east of Argentina. …”
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Genomic analysis of inbreeding level, kinship and breed relationships in Creole cattle from South America por Marcuzzi, Olivia, Calcaterra, Francisco, Loza Vega, Ariel Jhonny, Ortega Masague, Maria Florencia, Armstrong, Eileen, Pereira Rico, Juan A., Jara Tellechea, Eugenio Salvador, Olivera, L. Hernán, Peral Garcia, Pilar, Giovambattista, Guillermo

“…Creole cattle populations have suffered a drastic reduction in recent decades owing to absorbent crosses or replacement with commercial breeds of European or Indian origin. …”
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High-resolution soil organic carbon mapping for enhancing predictive accuracy of environmental drivers in heterogeneous and mountainous landscapes in Patagonia por Trinco, Fabio Daniel, Zeraatpisheh, Mojtaba, Turner, Hannah C., El Mujtar, Veronica Andrea, Tittonell, Pablo Adrian, Galford, Gillian L.

“…Knowledge of SOC is often represented by decades old, coarse-scale maps or sparse data, limiting its utility for land managers and policymakers. …”
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Modelling woody carbon dynamics in tropical dry forests: A case study of the Dry Chaco region por Filip, Iván Daniel, Peri, Pablo Luis, Fernandez, Pedro David, Loto, Dante, Kees, Sebastian Miguel, Banegas, Natalia Romina, Nasca, Jose Andres, Sacido, Mónica, Faverin, Claudia, Vibart, Ronaldo

“…Deforestation and forest degradation have escalated in tropical dry forests in recent decades, depleting biodi­ versity and carbon stocks. …”
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Climatic niche shift in the amphitropical disjunct grass Trichloris crinita por Quiroga, Raul Emiliano, Premoli, Andrea Cecilia, Fernandez, Roberto J.

“…Plant species disjunctions have attracted the interest of ecologists for decades. We investigated Trichloris crinita, a native C4 perennial grass with disjunct distribution between subtropical regions of North and South America, testing the hypothesis that the species has a similar realized climatic niche in both subcontinents. …”
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What do we talk about when we talk about Social-Ecological Systems? A Literature Review por Herrero Jáuregui, Cristina, Arnaiz Schmitz, Cecilia, Reyes, María Fernanda, Telesnicki, Marta Cecilia, Hernandez Agramonte, Ignacio M., Easdale, Marcos Horacio, Schmitz, María Fe, Aguiar, Martín Roberto, Gómez Sal, Antonio, Montes, Carlos

“…In the last decade, probably in response to global changes and the environmental crisis, the use of the term “social-ecological system” (SES) in scientific literature has grown. …”
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Physiological bases of genetic gains in sugarcane yield in Argentina por Acreche, Martin Moises, Saez, Julio Victor, Chalco Vera, Jorge Elias

“…However, a close analysis of the trends during the last decades reveals that the rate of increase in sugar yield has been actually slowing down since the 1980s. …”
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Linking farmers' management decision, demographic characteristics and perceptions of ecosystem services in the Southern Pampa of Argentina por De Rito, Mara Victoria, Auer, Alejandra Denise, Arnaiz Schmitz, Cecilia, Maceira, Nestor Oscar, Herrera, Lorena Paola

“…In the Pampean region of Argentina, uncultivated areas with spontaneous vegetation, such as the sierras (low hills), are important sites for nature conservation. In the last decades, the “agriculturization” process has generated different pressures on these areas and their fate depends on farmers' decision making. …”
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Estimated costs of plum pox virus and management of sharka, the disease it causes por Cambra, Mariano, Madariaga, Mónica, Varveri, Chistina, Çaglayan, Kadriye, Morca, Ali Ferhan, Chirkov, Sergei, Glasa, Miroslav

“…Cumulative global losses from the sharka pandemic since the decade 1910/20 probably surpass€ 13× 10 9. These outlays exclude indirect trade costs, economic losses, genetic erosion of traditional cultivars, and the costs of developing new cultivars tolerant or resistant to plum pox virus. …”
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