Resultados de búsqueda - "Andes"

Analysis of threats to South American flora and its implications for conservation por Ramírez Villegas, Julián Armando, Jarvis, Andy, Trouval, Jerry

“…Critical areas to monitor, expand and strengthen are mainly located in the Ecuadorian and Colombian Andes, southern Paraguay, the Guyana shield, southern Brazil, and Bolivia.…”
Enlace del recurso

Identifying candidate sites for crop biofortification in Latin America : Case studies in Colombia, Nicaragua and Bolivia por Zapata Caldas, E., Hyman, Glenn G., Pachón, Helena, Monserrate Rojas, Fredy Alexander, Vesga Varela, A.L.

“…Candidate sites for biofortification in Bolivia are found in the central part of the country, in the Andes Mountains. The availability and resolution of data limits the analysis. …”
Enlace del recurso

Changes in soil organic matter and phosphorus fractions under planted fallows and a crop rotation system on a Colombian volcanic-ash soil por Phiri, S, Barrios, E., Rao, Idupulapati M., Singh, B.R.

“…Significant correlations indicated that the P content in the LL and LM fractions of SOM may help determine the amounts of NaHCO3-extractable Pi and Po, which may therefore serve as sensitive indicators of `readily available' and `readily mineralizable' soil P pools, respectively, in the volcanic-ash soils of the Andes.…”
Enlace del recurso

Elevation effects on the carbon budget of tropical mountain forests (S Ecuador): The role of the belowground compartment por Moser, G, Leuschner, C, Hertel, D., Graefe, Sophie, Soethe, N, Iost, S

“…In an altitudinal transect study in the South Ecuadorian Andes, we tested the hypotheses that (i) aboveground net primary production (ANPP) decreases continuously with elevation due to decreasing temperatures, whereas (ii) belowground productivity (BNPP) remains constant or even increases with elevation due to a shift from light to nutrient limitation of tree growth. …”
Enlace del recurso

Multiple origins of Lima Bean landraces in the Americas: evidence from chloroplast and nuclear DNA polymorphisms por Motta Aldana, JR, Serrano Serrano, Martha L., Hernández Torres, Jorge, Castillo Villamizar, Genis, Debouck, Daniel G., Chacón Sánchez, María I.

“…The first one would have taken place in the Andes of southern Ecuador northwestern Peru and would have given rise to the large-seeded landraces collectively known as the Big Lima cultivars. …”
Enlace del recurso

Phylogeographic analysis of the chloroplast DNA variation in wild common bean (Phaseolus vulgaris L.) in the Americas por Chacón Sánchez, María I., Pickersgill, B, Debouck, Daniel G., Arias, J.S.

“…As these ages are taken as minimum divergence times, the influence of past events, such as the closure of the Isthmus of Panama and the final uplift of the Andes, on the migration history and population structure of this species cannot be disregarded.…”
Enlace del recurso

Plant growth, biomass production and nutrient accumulation by slash/mulch agroforestry systems in tropical hillsides of Colombia por Barrios, E., Cobo Borrero, Juan G.

“…Planted fallow systems under slash and mulch management were compared with natural fallow systems at two farms (BM1 and BM2) in the Colombian Andes. The BM1 site was relatively more fertile than the BM2 site. …”
Enlace del recurso

Ex-post analysis of landraces sympatric to a commercial variety in the center of origin of the potato failed to detect gene flow por Ghislain, M., Montenegro, J.D., Juarez, H., Herrera, M.R.

“…We sampled the landrace germplasm of 1,771 leaf samples comprising more than 400 different landraces from three regions where 'Yungay' and landraces have coexisted for 15–25 years in the Peruvian Andes. Simple sequence repeat (SSR) markers were used to identify putative hybrids based on allele sharing with those of 'Yungay'. …”
Enlace del recurso

Can Andean potatoes be agronomically biofortified with iron and zinc fertilizers? por Kromann, P., Valverde, F., Alvarado, S., Velez, R., Pisuña, J., Potosi, B., Taipe, A., Caballero, D., Cabezas, A., Devaux, A.

“…Greenhouse and field experiments were conducted in the Ecuadorian Andes with varying rates of foliar and soil applied Fe and Zn fertilizers to investigate the potential resulting increase in tuber Fe and tuber Zn concentrations. …”
Enlace del recurso

Isozyme variatoin [i.e. variation] in five species of Passiflora subgenus Tacsonia and P. manicata por Segura, Sergio D., Coppens d'Eeckenbrugge, Geo, Ollitrault, Patrick

“…La variación isoenzimáitica fue estudiada en 330 accesiones cultivadas o silvestres de maracuyá-banana (P. mollisima), `curuba india`, (P. sp.), otro tipo cultivado y especies relacionadas, P. mixta, `maracuá rosa` (P. cumbalensis), P. pinnatistipula, igual que P. manicata, nativa de los Andes venezolanos, colombianos y ecuatorianos. Seis tipos polimórficos de sistemas enzimáticos (IDH, 6-PGDH, PGM, DIA, PRX, y ACP) manifestaron 54 enzimotipos caracterizados por la presencia o ausencia de 26 electromorfos. …”
Enlace del recurso

Land use effects on soil fertility and nutrient cycling in the Peruvian High-Andean puna grasslands por Rolando, J.L., Dubeux, J.C., Ramírez, D., Ruíz Moreno, M., Turin, C., Mares, V., Sollenberger, L., Quiróz, R.

“…Expansion of crop production into high-altitude native grasslands is occurring in the Peruvian High-Andes due to climate change and agricultural intensification, with little understanding of the consequences to the ecosystem. …”
Enlace del recurso

The Nutritional Contribution of Potato Varietal Diversity in Andean Food Systems: a Case Study por Haan, Stef de, Burgos, G., Liria, Reyna, Rodríguez, F., Creed-Kanashiro, Hilary M., Bonierbale, Merideth W.

“…The contribution of varietal diversity ideally needs to be taken into account when conducting nutrition studies in diversity hotspots like the Andes where potato is a main staple. The potato adds positively to the nutritional balance and the recommended requirements for energy, protein, iron and zinc of women and children. …”
Enlace del recurso

Psychrophilic anaerobic digestion of guinea pig manure in low-cost tubular digesters at high altitude por Garfí, Marianna, Ferrer Martí, Laia, Villegas, Vidal, Ferrer, Ivet

“…Guinea pig is one of the most common livestock in rural communities of the Andes. The aim of this research was to study the anaerobic digestion of guinea pig manure in low-cost unheated tubular digesters at high altitude. …”
Enlace del recurso
Enlace del recurso

Dinámica y Prospectiva de la vegetación en la Corporación Pulmarí, Neuquén : Informe I. Noviembre 2021 por Easdale, Marcos Horacio, Bruzzone, Octavio Augusto, Sello, Mario Eugenio

“…Solicitado por el técnico: Juan Ignacio Gazzotti (INTA-AER San Martín de los Andes).…”
Enlace del recurso

Desde el territorio. Un viaje por los paisajes productivos de la Argentina que fueron noticia

“…De las llanuras orientales hasta la Cordillera de los Andes, de la selva subtropical a la meseta patagónica; en cada rincón de Argentina está presente el INTA. …”
Enlace del recurso

La calidad del suelo por Frugoni, María Cristina, Rusch, Veronica Elena

Enlace del recurso

Redes de consumo organizado y producción de alimentos por Gazzotti, Juan Ignacio, Garabito, Fernando Gaston

Enlace del recurso

Opciones agroecológicas para conservar y recuperar la capacidad productiva de los suelos de ladera por Luna Geller, Luz Alba

“…La búsqueda dealternativas de solución a estos problemas condujo a adelantar algunos estudios en los AndesNororientales de Colombia, particularmente en las zonas agroecológicas Me. …”
Enlace del recurso

Caracterización del sistema de siembra de papa en surco o guachado, como una práctica del saber tradicional andino en la conservación de suelos paperos en Nariño :informe final.

“…El cultivo de la papa es la actividad agrícola más sobresaliente de la zona fría de los andes colombianos, se estima un área sembrada de 167.000 hectáreas donde el departamento de Nariño participa con el 15%; es un renglón agrícola estratégico para generar empleo; en Nariño a esta actividad se dedican directamente 200.000 familias, sin cuantificar los empleos indirectos en toda la cadena; además es relevante la participación de este tubérculo en la dieta alimenticia de los colombianos con un consumo percápita de 65 Kg.…”
Enlace del recurso

Manejo integrado del cultivo de tomate de árbol

“…El Tomate de árbol (Cyphomandra betacea (Cay) Sendt), es nati-vo de los Andes Americanos y se cultiva entre los 1000 y 3000 msnm. …”
Enlace del recurso