Distribución potencial de la chinchilla de cola corta (Chinchilla chinchilla, Rodentia) en el sudoeste de Bolivia
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Ecología en Bolivia
Abstract
Actualmente, la presencia de la chinchilla de cola corta (Chinchilla chinchilla), abundante en la región andina sudamericana durante el siglo pasado, ha sido fehacientemente documentada en pocas localidades del norte de Chile y Argentina; en Bolivia aunque su presencia es altamente probable, los últimos registros confiables datan de 1939. La cacería con fines peleteros disminuyó significativamente la población silvestre de la especie lo que derivó en un estatus de conservación "En Peligro Crítico" a nivel mundial. En este contexto, la búsqueda de poblaciones remanentes ha sido considerada prioritaria por especialistas en la especie. Para colaborar en esta tarea, generamos un modelo predictivo del nicho ecológico ambiental de la especie mediante el algoritmo de Maxent basado en registros pasados y actuales dentro y fuera del territorio nacional. La proyección indicó que la mayor probabilidad de presencia (valores de predicción entre 0.7-1.0) se asocian al área de la Reserva Nacional de Fauna Andina Eduardo Avaroa y en la frontera con Chile, en la provincia biogeográfica puneña xerofítica, en los pisos nivales y subnivales de la Coordillera Occidental.
Currently, the presence of short-tailed chinchilla (Chinchilla chinchilla), abundant in the South American Andean over the last century has been documented in a few locations in northern Chile and Argentina; in Bolivia although their presence is highly probable, the last accurate records date from 1939. Hunting with fur purposes decreased the wild population which resulted in conservation status "Critically Endangered" globally. In this context, the search for remnant populations has been considered a priority by specialists on the species. To collaborate in this task, we generate a predictive model of the ecological niche of the species using Maxent algorithm based on past and current records within and outside the country. The projection indicated the increased presence probability (predictive values between 0.7-1.0) is associated to the area of the National Reserve of Andean Fauna Eduardo Avaroa and on the border with Chile, all about this in xerophytic Puna biogeographic province in the floors and both subnival and nival sites of western Andean Cordillera.
Currently, the presence of short-tailed chinchilla (Chinchilla chinchilla), abundant in the South American Andean over the last century has been documented in a few locations in northern Chile and Argentina; in Bolivia although their presence is highly probable, the last accurate records date from 1939. Hunting with fur purposes decreased the wild population which resulted in conservation status "Critically Endangered" globally. In this context, the search for remnant populations has been considered a priority by specialists on the species. To collaborate in this task, we generate a predictive model of the ecological niche of the species using Maxent algorithm based on past and current records within and outside the country. The projection indicated the increased presence probability (predictive values between 0.7-1.0) is associated to the area of the National Reserve of Andean Fauna Eduardo Avaroa and on the border with Chile, all about this in xerophytic Puna biogeographic province in the floors and both subnival and nival sites of western Andean Cordillera.
Description
Vol. 49, No. 2