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    "description" : "The potential distribution map of whitefly is the result of a weighted overlay of a combination of several ecological models and a set of environemtal variables. Models used were Environmental Distance, Genetic Alrgorithm for Rule-set Production and Climate species Model. Environmental variables include: Bioclim dataset, number of consecurive dry months, aridity index, potential evapotranspiration and altitude. The methodology is described in: Herrera Campo, BV. Predicción de distribución potencial de cuatro patógenos de la yuca, utilizando modelos de nicho ecológico. Tesis de grado para optar al título de geógrafa. Cali: Universidad del Valle. Facultad de Humanidades, 2010, 134p. (Outstanding).and Herrera Campo BV, Hyman G & Bellotti A (2011) Threats to cassava production: known and potential geographic distribution of four key biotic constraints. Food security: 3 (3) 329-345",
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