Potential distribution and abundance of candelilla (Euphorbia antisyphilitica) in northern Zacatecas, Mexico
The candelilla (Euphorbia antisyphilitica) grows in arid regions of Mexico, having social and economic importance, although its availability is not clearly defined. The objective of the study was to estimate their potential distribution and abundance in the north of Zacatecas state. A potential dist...
| Glavni autori: | , , , , |
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| Format: | Online |
| Jezik: | spa |
| Izdano: |
Instituto de Ecología, A.C.
2019
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| Online pristup: | https://myb.ojs.inecol.mx/index.php/myb/article/view/e2511657 |
| _version_ | 1799769349151522816 |
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| author | Bañuelos-Revilla, José Enrique Palacio-Núñez, Jorge Martínez-Montoya, Juan Felipe Olmos-Oropeza, Genaro Flores-Cano, Jorge Alberto |
| author_facet | Bañuelos-Revilla, José Enrique Palacio-Núñez, Jorge Martínez-Montoya, Juan Felipe Olmos-Oropeza, Genaro Flores-Cano, Jorge Alberto |
| author_sort | Bañuelos-Revilla, José Enrique |
| collection | MYB |
| description | The candelilla (Euphorbia antisyphilitica) grows in arid regions of Mexico, having social and economic importance, although its availability is not clearly defined. The objective of the study was to estimate their potential distribution and abundance in the north of Zacatecas state. A potential distribution modeling was performed through MaxEnt® using 18 data of presence, 8 historical and 10 current, and 27 predictive variables. The presence was corroborated in the field by means of 29 random points within the area of potential distribution, and 19 others outside it. The population density was estimated with plots, measuring the size of the individuals, and considering the following variables: vegetation and soil type, altitude, and slope. A Kruskal-Wallis test was used. The model generated an accurate prediction (AUC = 0.920), in which 11 variables contributed with 82.1% to the potential distribution, the most important being: vegetation type, exposure, slope, altitude, and vegetation cover. The potential distribution area was 19.2% of the total study area, with a population density of 295 767.3 individuals per square kilometer. This was significantly influenced by the vegetation type and altitude, while the slope affected the plant height. There were positive presence results in 37.9% of the validation sites with potential distribution in the study area, plus 10.5% outside of the potential distribution area. It is concluded that by using the MaxEnt® algorithm the potential distribution of wild plants, such as candelilla, can be modeled; the potential distribution was discontinuous and less than 20%. |
| format | Online |
| id | oai:oai.myb.ojs.inecol.mx:article-1657 |
| institution | Madera y Bosques |
| language | spa |
| publishDate | 2019 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.myb.ojs.inecol.mx:article-16572022-11-29T22:51:03Z Potential distribution and abundance of candelilla (Euphorbia antisyphilitica) in northern Zacatecas, Mexico Distribución potencial y abundancia de candelilla (Euphorbia antisyphilitica) en el norte de Zacatecas, México Bañuelos-Revilla, José Enrique Palacio-Núñez, Jorge Martínez-Montoya, Juan Felipe Olmos-Oropeza, Genaro Flores-Cano, Jorge Alberto population density MaxEnt® natural resources industrial uses environmental variables arid and semi-arid zones densidad poblacional MaxEnt® recursos naturales usos industriales variables ambientales zonas áridas y semiáridas The candelilla (Euphorbia antisyphilitica) grows in arid regions of Mexico, having social and economic importance, although its availability is not clearly defined. The objective of the study was to estimate their potential distribution and abundance in the north of Zacatecas state. A potential distribution modeling was performed through MaxEnt® using 18 data of presence, 8 historical and 10 current, and 27 predictive variables. The presence was corroborated in the field by means of 29 random points within the area of potential distribution, and 19 others outside it. The population density was estimated with plots, measuring the size of the individuals, and considering the following variables: vegetation and soil type, altitude, and slope. A Kruskal-Wallis test was used. The model generated an accurate prediction (AUC = 0.920), in which 11 variables contributed with 82.1% to the potential distribution, the most important being: vegetation type, exposure, slope, altitude, and vegetation cover. The potential distribution area was 19.2% of the total study area, with a population density of 295 767.3 individuals per square kilometer. This was significantly influenced by the vegetation type and altitude, while the slope affected the plant height. There were positive presence results in 37.9% of the validation sites with potential distribution in the study area, plus 10.5% outside of the potential distribution area. It is concluded that by using the MaxEnt® algorithm the potential distribution of wild plants, such as candelilla, can be modeled; the potential distribution was discontinuous and less than 20%. En las zonas áridas de México habita la candelilla (Euphorbia antisyphilitica), especie con importancia social y económica, pero cuya disponibilidad no está bien definida. El objetivo de este trabajo fue estimar su distribución potencial y abundancia en el norte del estado de Zacatecas. Para la distribución potencial se realizó un modelado mediante el algoritmo MaxEnt®, donde se usaron 18 registros de presencia: 8 históricos y 10 propios, así como 27 variables predictivas. Se cotejó en campo la presencia mediante 29 puntos aleatorios en el área con distribución potencial y otros 19 fuera de ella. La densidad poblacional se estimó mediante parcelas, se midió la talla de los ejemplares y se consideraron las variables: tipo de vegetación y de suelo, altitud y pendiente del terreno y se realizó la prueba de Kruskal-Wallis. El modelo presentó buena predicción (AUC = 0.920), donde 11 variables contribuyeron con 82.1% en la distribución potencial y las más importantes fueron: tipo de vegetación, exposición, pendiente, altitud y cobertura vegetal. La distribución potencial se encontró en 19.2% del total del área de estudio; la densidad poblacional fue de 295 767.3 individuos por kilómetro cuadrado, influida significativamente por el tipo de vegetación y altitud. La talla de las plantas fue significativamente menor en pendiente escarpada. En 37.9% de los puntos de validación con distribución potencial hubo resultados positivos de presencia de la especie, sin embargo, en 10.5% fuera del área de distribución potencial también apareció. Se concluye que mediante la utilización del algoritmo MaxEnt® se puede modelar la distribución potencial de plantas silvestres, como la candelilla; la distribución potencial fue discontinua y menor a 20%. Instituto de Ecología, A.C. 2019-03-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo evaluado por pares application/pdf application/xml https://myb.ojs.inecol.mx/index.php/myb/article/view/e2511657 10.21829/myb.2019.2511657 Madera y Bosques; Vol. 25 No. 1 (2019): Spring 2019 Madera y Bosques; Vol. 25 Núm. 1 (2019): Primavera 2019 2448-7597 1405-0471 spa https://myb.ojs.inecol.mx/index.php/myb/article/view/e2511657/1858 https://myb.ojs.inecol.mx/index.php/myb/article/view/e2511657/1922 Derechos de autor 2019 Madera y Bosques |
| spellingShingle | Bañuelos-Revilla, José Enrique Palacio-Núñez, Jorge Martínez-Montoya, Juan Felipe Olmos-Oropeza, Genaro Flores-Cano, Jorge Alberto Potential distribution and abundance of candelilla (Euphorbia antisyphilitica) in northern Zacatecas, Mexico |
| title | Potential distribution and abundance of candelilla (Euphorbia antisyphilitica) in northern Zacatecas, Mexico |
| title_full | Potential distribution and abundance of candelilla (Euphorbia antisyphilitica) in northern Zacatecas, Mexico |
| title_fullStr | Potential distribution and abundance of candelilla (Euphorbia antisyphilitica) in northern Zacatecas, Mexico |
| title_full_unstemmed | Potential distribution and abundance of candelilla (Euphorbia antisyphilitica) in northern Zacatecas, Mexico |
| title_short | Potential distribution and abundance of candelilla (Euphorbia antisyphilitica) in northern Zacatecas, Mexico |
| title_sort | potential distribution and abundance of candelilla (euphorbia antisyphilitica) in northern zacatecas, mexico |
| url | https://myb.ojs.inecol.mx/index.php/myb/article/view/e2511657 |
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