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Browsing by Autor "Edwin Yucra"

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    Adapting to Climate Change in Andean Ecosystems: Landscapes, Capitals, and Perceptions Shaping Rural Livelihood Strategies and Linking Knowledge Systems
    (American Association of Geographers, 2010) Corinne Valdivia; Anji Seth; Jere L. Gilles; Ligia García; Elizabeth Jiménez; Jorge Cusicanqui; Fredy Navia; Edwin Yucra
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    Análisis de efecto del cambio del clima en zonas productoras de Tarwi y su efecto en sistemas acoplados
    (2023) Edwin Yucra; Cristal Taboada; Milenka Iturralde; Luis Machicao
    El cambio del clima en el altiplano de Bolivia, es percibido por las familias productoras principalmente por afectar a la producción agrícola, uno de los sistemas afectados y, casi olvidados, es el del Tarwi (Lupinus mutabilis Sweet), que es producido de acuerdo a los conocimientos locales por pobladores de cercanías del Lago Titicaca, que afectados por las nuevas condiciones del clima ha permitido al Proyecto Tarwi de la IIPTyCA, de la Facultad de Agronomía, realizar la investigación técnica del comportamiento y las tendencias del clima de la región, sumada a las percepciones de los productores y, como este viene afectando a los sistemas humanos y naturales del Tarwi. La falta de precipitación en los periodos de siembra y en floración dentro de la ventana climática de producción, viene ocasionando perdidas en los cultivos, a ello se suma las esporádicas heladas en las fases fenológicas vulnerables del Tarwi, que son favorecidos por la presencia de veranillos. De la percepción de los productores de la zona, consideran que el factor climático más preocupante es las sequias no tanto las heladas. Dentro de los Sistemas acoplados, el sistema humano tiene mayor número de vulnerabilidades debido a que son personas mayores son las que quedan en campo; además, la perdida de conocimientos; en manejo de cultivo y pronósticos del clima los hacen mas vulnerables. El sistema natural, ofrece capacidad adaptativa porque el cultivo del Tarwi al ser mutabilis, presenta, aunque en pocas plantas, ecotipos de menor tiempo de desarrollo, y pueden adaptarse a diferentes condiciones de suelo y clima.
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    Can warmer be better? Changing production systems in three Andean ecosystems in the face of environmental change
    (Elsevier BV, 2017) Cristal Taboada; Ligia García; Jere L. Gilles; Omar Pozo; Edwin Yucra; Katherine Rojas
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    Could deficit irrigation be a sustainable practice for quinoa (Chenopodium quinoa Willd.) in the Southern Bolivian Altiplano?
    (Elsevier BV, 2008) Sam Geerts; Dirk Raes; Ligia García; Octavio Condori; Judith Mamani; Roberto Miranda; Jorge Cusicanqui; Cristal Taboada; Edwin Yucra; Jean Vacher
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    Linking knowledge systems for rural livelihoods adaptation under uncertainty: Drying and warming in Andean ecosystems
    (IOP Publishing, 2009) Corianne Valdivia; Jere L. Gilles; Anil C. Seth; J Thiebault; Elizabeth Jiménez; María Cruz García-González; Edwin Yucra
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    Validating local meteorological forecast knowledge in the Bolivian Altiplano: moving toward the co-production of agricultural forecasts
    (Taylor & Francis, 2022) Jere L. Gilles; Ligia García; Edwin Yucra; Rogelio Quispe; Aymara Poma; Janneth M. Quispe; Katherine Rojas; Pablo Cabrera-Barona
    This study validates local forecast indicators used by indigenous Aymara in Bolivia’s Northern and Central Altiplano. In Bolivia, the use of traditional forecasting methods is declining even though climate services cannot provide useful forecasts because of a low density of stations and lack outreach services. Validating local knowledge can reduce the erosion of local knowledge by resolving debates over their utility within communities and by gaining support of public agencies charged with promoting indigenous knowledge. The research had three phases, first key informants identified forecast indicators, then 95 farmers were asked to evaluate their reliability. In the North, four indicators were rated as highly reliable and in the Central region, three. Finally, a seasonal forecast indicator and two indicators of the onset of rains were evaluating using historical meteorological data. The seasonal indicator was the minimum temperature on the Fiesta de San Juan, and the rainy season onset was the flowering pattern of two plant species. The minimum temperature explained 55.5% of the variance in growing season precipitation. Flowering patterns are affected by severe frosts, and there was a correlation between frosts and later rains. Results show local knowledge’s potential for improving agrometeorological forecasts and for managing weather-related risks.

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