Una metodología combinada para estudios poblacionales en comunidades campesino-indígenas de los Andes: migración y fecundidad

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Método del hijo previo. Experiencia del hospital rural de Junín de los Andes

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Método del hijo previo: experiencia del hospital rural de Junín de los Andes

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Censo experimental de Junín de los Andes: resultados y análisis

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The State and transnational banks: lessons from the Bolivian crisis of external public indebtedness

Includes bibliography

The population genetic structure of Rhizoctonia solani AG-3PT from potato in the Colombian Andes

The soilborne fungus Rhizoctonia solani anastomosis group 3 (AG-3PT) is a globally important potato pathogen. However, little is known about the population genetic processes affecting field populations of R. solani AG-3PT, especially in the South American Colombian Andes, which is near the center of diversity of the two most common groups of cultivated potato, Solanum tuberosum and S. phureja. We analyzed the genetic structure of 15 populations of R. solani AG-3PT infecting potato in Colombia using 11 simple-sequence repeat (SSR) markers. In total, 288 different multilocus genotypes were identified among 349 fungal isolates. Clonal fractions within field populations were 7 to 33%. R ST statistics indicated a very low level of population differentiation overall, consistent with high contemporary gene flow, though moderate differentiation was found for the most distant southern populations. Genotype flow was also detected, with the most common genotype found widely distributed among field populations. All populations showed evidence of a mixed reproductive mode, including both asexual and sexual reproduction, but two populations displayed evidence of inbreeding. © 2013 The American Phytopathological Society.

Método del hijo previo: experiencia del hospital rural de Junin de Los Andes

La aplicación del método del hijo previo se inicia en el hospital regional de Junin de Los Andes en 1986 y el referente empírico del presente estudio lo constituyen 966 madres, 67 por ciento de las cuales eran residentes urbanas (p.3). Los niveles educacionales son bajos y el analfabetismo funcional es del 32.1 por ciento (p.4). La edad media de las madres aumenta a medida que se hace mayor el orden de nacimiento, de 20,7 anos para el orden 1 hasta 39,5 anos para el orden 10 o mas (p.6). El intervalo intergenesico medio tiene una duracion de 3,12 meses (p.7). La tasa de mortalidad infantil obtenida como cuociente entre el numero de hijos previos fallecidos con menos de un ano y el total de hijos previos es de 38,62 por mil (p.8) y la probabilidad de morir entre los 0 y 2 anos es de 47,03 por mil (p.11).

Ecosistema del pastoreo andino en las tierras altas de los Andes Centrales

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Policies for the management of the development of river basins and microregions in the high Andes

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Political instability, institutional quality and social conflict in the Andes

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Derecho, poder y territorio en la gestión local de agua en los Andes: hacia la concertación de políticas hídricas sustentables

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Tráfico de drogas ilícitas nos Andes: a dimensão regional da cooperação e da segurança

Pós-graduação em Relações Internacionais (UNESP - UNICAMP - PUC-SP) - FFC

Millennial-Scale Climate Variability during the Last Glacial Period in the Tropical Andes

Millennial-scale climate variation during the Last Glacial period is evident in many locations worldwide, but it is unclear if such variation occurred in the interior of tropical South America, and, if so, how the low-latitude variation was related to its high-latitude counterpart. A high-resolution record, derived from the deep drilling of sediments on the floor of Lake Titicaca in the southern tropical Andes, is presented that shows clear evidence of millennial-scale climate variation between ~60 and 20 ka BP. This variation is manifested by alternations of two interbedded sedimentary units. The two units have distinctive sedimentary, geochemical, and paleobiotic properties that are controlled by the relative abundance of terrigenous or nearshore components versus pelagic components. The sediments of more terrigenous or nearshore nature likely were deposited during regionally wetter climates when river transport of water and sediment was higher, whereas the sediments of more pelagic character were deposited during somewhat drier climates regionally. The majority of the wet periods inferred from the Lake Titicaca sediment record are correlated with the cold events in the Greenland ice cores and North Atlantic sediment cores, indicating that increased intensity of the South American summer monsoon was part of near-global scale climate excursions.