Search Results - "marginalism"

Ancient and modern DNA reveal dynamics of domestication and cross-continental dispersal of the dromedary by Almathen, F., Charruau, P., Mohandesan, E., Mwacharo, Joram M., Orozco-terWengel, P., Pitt, D., Abdussamad, A.M., Uerpmann, M., Uerpmann, H.P., Cupere, B. de, Magee, P., Alnaqeeb, M.A., Salim, B., Raziq, A., Dessie, Tadelle, Abdelhadi, O.M., Banabazi, M.H., Al-Eknah, M., Walzer, C., Faye, B., Hofreiter, M., Peters, J., Hanotte, Olivier H., Burger, P.A.

“…Today they continue to be an important livestock resource in marginal agro-ecological zones. However, the history of dromedary domestication and the influence of ancient trading networks on their genetic structure have remained elusive. …”
Get full text

Economia by International Center for Tropical Agriculture

“…Recommendations include the development of dual-purpose var. with the requisite quality characteristics, the use of improved technology for local var., and specialization of production for the fresh market or processing depending on the area (prime land or marginal areas). The impact of new technology on the consumption of CF by the different income groups in Brazil was studied. …”
Get full text

Brazil: economic study of cassava by Ibanez-Meier, C, Gontijo, A, Janssen, W.

“…To increase the consumption of fresh cassava, it is necessary to reduce marketing margins. The reduction of production costs of cassava starch is also crucial. …”
Get full text

The Role of Diversity in Mediating Microbiota Structural and Functional Differences in Two Sympatric Species of Abalone Under Stressed Withering Syndrome Conditions by Cicala, Francesco, Cisterna-Céliz, José Alejandro, Paolinelli, Marcos, Moore, James D., Sevigny, Joseph, Rocha-Olivares, Axayácatl

“…Indeed, microbiota differences between stressed and healthy abalone were marginal in the more complex bacterial communities of H. corrugata, in which no significant structural or functional changes were detected. …”
Get full text
Get full text
Get full text

Are invasive species promoting yellowjacket invasion in Patagonia? by Masciocchi, Maite, Villacide, Jose Maria, Buteler, Micaela, Martinez Von Ellrich, Andres

“…Our results indicate that habitats close (<200 m) to stream margins, where S. fragilis and GWA occur, contain not only a greater abundance of workers but also a higher nest density of V. vulgaris yellowjackets. …”
Get full text
Get full text
Get full text

Back to the people: The role of community-based responses in shaping landscape trajectories in Oaxaca, Mexico. by Novotny, Ivan P., Fuentes-Ponce, Mariela H., Tittonell, Pablo Adrian, Lopez-Ridaura, Santiago, Rossing, Walter A.H.

“…Two groups located in areas with high slopes and elevated marginalization index values showed deforestation patterns. …”
Get full text
Get full text
Get full text

Genetic variation in seedling water-use efficiency of Patagonian Cypress populations from contrasting precipitation regimes assessed through carbon isotope discrimination by Pastorino, Mario Juan, Aparicio, Alejandro Gabriel, Marchelli, Paula, Gallo, Leonardo Ariel

“…The dry situation was represented by two neighboring marginal forest patches from the steppe, while the humid condition was represented by a population with 1,200 mm higher mean annual precipitation. …”
Get full text
Get full text
Get full text

Multivariate mapping of soil with structural equation modelling by Angelini, Marcos Esteban, Heuvelink, Gerard B.M., Kempen, Bas

“…Cross-validation of predicted soil properties showed that SEM explained only marginally more of the variance than a linear regression model. …”
Get full text
Get full text

Characterization of Awassi lamb fattening systems: a Syrian case study by Wiedemann Hartwell, Birgitte, Iñiguez, Luis, Mueller, Joaquin Pablo, Wurzinger, María, Knaus, W.F.

“…Research on least-cost fattening diets and curbing disease problems to increase farmer's income margins is needed. It is expected that due to existing commonalities, the information emerging from this study regarding major constraints to Awassi lamb fattening systems could be useful for an across-synthesis on Awassi fattening production in the region…”
Get full text
Get full text
Get full text

Intraspecific phylogeny of a Patagonian fescue: differentiation at molecular markers and morphological traits suggests hybridization at peripheral populations by Guidalevich, Verónica, Nagahama, Nicolas, Lopez, Aldana, Angeli, Juan Pablo, Marchelli, Paula, Azpilicueta, Maria Marta

“…Key Results: The combined information of the Bayesian tree (ITS marker), the geographical distribution of haplotype variants (trnL-F marker) and the morpho-anatomical traits, distinguished populations located at the margins of the distribution. Some of the variants detected were shared with other sympatric species of fescues. …”
Get full text
Get full text
Get full text

Effect of Fertilization, Cultivar and Weeds on the Productive Behavior of Tall Fescue (Lolium arundinaceum (Schreb.) Darbysh) by Heguy, Barbara, Lamarche, Luciano, Lavarello Herbin, Agustina, Jalil, G.H., Fernández, F.E., Rodríguez Guiñazú, Adrián, Mendicino, Lorena, Graciano, Corina, Bolaños, Victor R.A., Eirin, Mariano Antonio

“…The agricultural intensification in Argentina's Pampean region has pushed livestock farming towards marginal areas such as the Salado Depression. In this context, tall fescue pastures emerge as a sustainable forage alternative. …”
Get full text
Get full text

An efficiently biological nitrogen fixation of non-native Lotus tenuis justifies its key role in the flooding Pampas (Argentina) by Campestre, María Paula, Antonelli, Cristian Javier, Bailleres, Matias Andres, Gortari, Maximiliano, Maguire, Vanina Giselle, Ezquiaga, Juan Pedro, Taboada, Miguel Angel, Ruiz, Oscar Adolfo

“…Together with previously published data, including information on ruminant management, the results obtained contribute to supporting the idea that the naturalized legume plays a strategic role in the sustainability of marginal agricultural soils.…”
Get full text
Get full text
Get full text

Soil quality impacts of current South American agricultural practices by Wingeyer, Ana Beatriz, Amado, Telmo Jorge Carneiro, Pérez Bidegain, Mario, Studdert, Guillermo, Perdomo Varela, Carlos Honorio, García, Fernando O., Karlen, Douglas L.

“…Unprecedented adoption of no-tillage as well as improved soil fertility and plant genetics have increased yields, but the use of purchased inputs, monocropping i.e., continuous soybean (Glycine max (L.) Merr.), and marginal land cultivation have also increased. These changes have significantly altered the global food and feed supply role of these countries, but they have also resulted in various levels of soil degradation through wind and water erosion, soil compaction, soil organic matter (SOM) depletion, and nutrient losses. …”
Get full text
Get full text
Get full text

Genetic variability of Araucaria angustifolia in the Argentinean Parana Forest and implications for management and conservation by Inza, Maria Virginia, Aguirre, Natalia Cristina, Torales, Susana Leonor, Pahr, Norberto Manuel, Fassola, Hugo Enrique, Fornes, Luis Fernando, Zelener, Noga

“…Average genetic diversity for the native populations was moderate-to-low (He = 0.128) in accordance with their marginal location within Araucaria’s range. In general, genetic diversity of populations decreases from east to west with increasing distances from the main area of species distribution on southern Brazil. …”
Get full text
Get full text
Get full text

Agricultural expansion in the Semiarid Chaco: poorly selectivecontagious advance by Volante, Jose Norberto, Mosciaro, Maria Jesus, Gavier Pizarro, Gregorio Ignacio, Paruelo, José María

“…Agriculture is expanding over marginal areas and land clearing dynamics have been increasingly associated to the proximity to already cleared areas, defining a frontier—advancement pattern which gives the idea of a contagion process. …”
Get full text
Get full text
Get full text

Biodiversity potential of Nothofagus forests in Tierra del Fuego (Argentina): tool proposal for regional conservation planning by Martínez Pastur, Guillermo José, Peri, Pablo Luis, Soler Esteban, Rosina Matilde, Schindler, Stefan, Lencinas, María Vanessa

“…Correlation among environmental, topographic and forest landscape variables were discussed, as well as the marginality and the specialization of the indicative species. …”
Get full text
Get full text
Get full text

Phases or regimes? Revisiting NDVI trends as proxies for land degradation by Easdale, Marcos Horacio, Bruzzone, Octavio Augusto, Mapfumo, Paul, Tittonell, Pablo Adrian

“…We observed that trend explained a marginal portion of total temporal variability, whereas monotonic functions, such as linear trends, were unable to capture dynamics that were non‐unidirectional, resulting in misinterpretation of actual trends. …”
Get full text
Get full text
Get full text

Stress response at different ages of weaning in cattle by Odeon, Maria Mercedes, Munilla, María Eugenia, Lado, Martin, De Fino, F., Maidana, Silvina Soledad, Vittone, Juan Sebastian, Romera, Sonia Alejandra

“…With regard to cortisol levels, there was a strong increase at day one corresponding to a clear stress response in the conventional weaning group, wheras in the group of early weaning animals only a marginal increase which difficult returned to baseline levels could be observed. …”
Get full text
Get full text
Get full text

The role of social capital and collective actions in natural capital conservation and management by Auer, Alejandra Denise, Von Below, Jonathan, Nahuelhual, Laura, Mastrángelo, Matias, Gonzalez, Aira Edith, Gluch, Mariana, Vallejos, María, Staiano, Luciana, Laterra, Pedro, Paruelo, José

“…Therefore, the formation and maintenance of SC of the most vulnerable actors and those who support them must be a priority for political action, in order to counteract the asymmetric power relations that lead to the exclusion and marginalization of many rural actors.…”
Get full text
Get full text
Get full text

Evaluación del efecto de glifosatos en el manejo de malezas en el algodonero bajo el sistema de siembra directa by Morales Vega, William, Romero F, Jorge, Galindo, Luis

“…Los resultados permitieron apreciar que: en preemergencia, solamente el producto Candela fue negativamente diferente en porcentaje de control de malezas durante las dos primeras semanas, pero a la tercera semana el su efecto fue similar a los nueve productos restantes, los glifosatos bajo estudio ejercen un buen control postemergente de malezas, a los 7 días de aplicación postemergente, Klifos fue el producto que presentó el más alto valor de daños al cultivo (daño moderado), a los 14 días se notan daños muy leves, para todos los productos evaluados, lo que indica baja toxicidad sobre el cultivo, los productos ensayados no alteran la calidad de la fibra de la variedad Corpoica M-123, los mejores productos desde el punto de vista económico fueron Klifos y Socar, con tasas de retorno marginal de 29,7 y 17,8 por ciento…”
Get full text