2019
DOI: 10.19136/era.a6n18.1910
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Modelación de la presencia de Euphorbia antisyphilitica Zucc mediante propiedades físicas y químicas del suelo

Abstract: México es el único productor y exportador a nivel mundial de la cera de candelilla, pero el mercado internacional se establecieron restricciones con la finalidad de disminuir la presión sobre el recurso natural por la sobreexplotación, por lo que actualmente se encuentra incluida en la lista de la Convención Internacional sobre el Comercio de Especies Amenazadas de Fauna y Flora (CITES). El objetivo fue identificar las propiedades del suelo que favorecen la distribución de la candelilla, mediante el método de … Show more

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Cited by 1 publication
(3 citation statements)
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“…Rojas-Molina The most important variable in the current model of habitat suitability for candelilla was FRA, which represents the percentage of rocks in the soil (fragments > 6 cm in diameter). In the study by Hernández-Herrera et al [46], the coarse volumetric fragments variable represented 22.3% of the total model (i.e., almost half of the relative importance obtained in this study); however, it represented the third most relevant variable. The maximum percentage of coarse fragments in this study was 63%, a favorable condition for the presence of candelilla, since high stoniness promotes good drainage [6].…”
Section: Discussionsupporting
confidence: 42%
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“…Rojas-Molina The most important variable in the current model of habitat suitability for candelilla was FRA, which represents the percentage of rocks in the soil (fragments > 6 cm in diameter). In the study by Hernández-Herrera et al [46], the coarse volumetric fragments variable represented 22.3% of the total model (i.e., almost half of the relative importance obtained in this study); however, it represented the third most relevant variable. The maximum percentage of coarse fragments in this study was 63%, a favorable condition for the presence of candelilla, since high stoniness promotes good drainage [6].…”
Section: Discussionsupporting
confidence: 42%
“…The total records for model development were 639 after the debugging process, which constitutes the number of records that allow for a correct performance of the model and covers a large area of the Chihuahuan Desert [45]. Previous studies with current candelilla distribution models showed AUC values of up to 0.97 [46], higher than those found in this study (0.939); however, it is classified as excellent according to Lobo et al [41]. Our results are supported by the partial ROC tests that presented values > 1.8 and Z (p < 0.01), and that classify the models as excellent and reliable [40].…”
Section: Discussionmentioning
confidence: 99%
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