Logistic relationship between tree species diversity of natural areas and human settlements in tropical Mexico
Background and Aims: Under the scenario of human population growth, the protected natural areas (ANPs) represent refuges of species; however, they are severely impacted by human settlements <50 km away. Due to the lack of information in Mexico, the effect of the distance and density of the ne...
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| Format: | Online |
| Langue: | spa |
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Instituto de Ecología, A.C.
2019
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| Accès en ligne: | https://abm.ojs.inecol.mx/index.php/abm/article/view/1484 |
| _version_ | 1799771355984429056 |
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| author | Martínez-Sánchez, José Luis |
| author_facet | Martínez-Sánchez, José Luis |
| author_sort | Martínez-Sánchez, José Luis |
| collection | ABM |
| description | Background and Aims: Under the scenario of human population growth, the protected natural areas (ANPs) represent refuges of species; however, they are severely impacted by human settlements <50 km away. Due to the lack of information in Mexico, the effect of the distance and density of the nearest population on the tree diversity of 109 sites of tropical natural areas was analyzed, globally and by vegetation type, and over their surrounding forested area.Methods: By a search with Google Scholar™, documents about six types of tropical forests were selected. One hundred and nine values of sampling area, area of the forest fragment, DBH, α diversity, Shannon, Simpson, and equitability indices, distance to the nearest town, population size and age of the protection decree were extracted. The α diversity was standardized for 1 cm DBH and 1 ha. The sampling area-diversity relationship was analyzed by logarithmic regression, and the biological diversity-distance and population density relationships by logistic regression.Key results: With the analysis of 73 diversity data, α diversity was positively related to the distance and negatively to the size of the population closest to the unprotected natural areas. As distance and size to the closest population increase, the α diversity increases and decreases, respectively. These relationships between size and distance of populations and α diversity were also present individually in the non-protected areas of subdeciduous forest, subhumid, humid, and mountain forest. On the contrary, with the analysis of 36 diversity data for the natural reserves, there was no relationship.Conclusions: This work shows that the distance and density of the population settlement closest to the natural area affect tree diversity, which in 40 years has decreased by 11.4% in the sites analyzed herein. It is discussed how protected areas seem to work in the conservation of biological resources in the tropics of México. |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-1484 |
| institution | Acta Botanica Mexicana |
| language | spa |
| publishDate | 2019 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-14842022-11-17T22:30:51Z Logistic relationship between tree species diversity of natural areas and human settlements in tropical Mexico Relación logística entre la diversidad de especies arbóreas de áreas naturales y los asentamientos humanos del trópico de México Martínez-Sánchez, José Luis ANPs biological diversity conservation ecologic impact human demography logistic regression natural reserve urbanization ANPs conservación demografía humana diversidad biológica impacto ecológico regresión logística reserva natural urbanización Background and Aims: Under the scenario of human population growth, the protected natural areas (ANPs) represent refuges of species; however, they are severely impacted by human settlements <50 km away. Due to the lack of information in Mexico, the effect of the distance and density of the nearest population on the tree diversity of 109 sites of tropical natural areas was analyzed, globally and by vegetation type, and over their surrounding forested area.Methods: By a search with Google Scholar™, documents about six types of tropical forests were selected. One hundred and nine values of sampling area, area of the forest fragment, DBH, α diversity, Shannon, Simpson, and equitability indices, distance to the nearest town, population size and age of the protection decree were extracted. The α diversity was standardized for 1 cm DBH and 1 ha. The sampling area-diversity relationship was analyzed by logarithmic regression, and the biological diversity-distance and population density relationships by logistic regression.Key results: With the analysis of 73 diversity data, α diversity was positively related to the distance and negatively to the size of the population closest to the unprotected natural areas. As distance and size to the closest population increase, the α diversity increases and decreases, respectively. These relationships between size and distance of populations and α diversity were also present individually in the non-protected areas of subdeciduous forest, subhumid, humid, and mountain forest. On the contrary, with the analysis of 36 diversity data for the natural reserves, there was no relationship.Conclusions: This work shows that the distance and density of the population settlement closest to the natural area affect tree diversity, which in 40 years has decreased by 11.4% in the sites analyzed herein. It is discussed how protected areas seem to work in the conservation of biological resources in the tropics of México. Antecedentes y Objetivos: Bajo el crecimiento poblacional, las áreas naturales protegidas (ANPs) representan refugios para las especies; sin embargo, han sido impactadas por asentamientos humanos a <50 km de distancia. Derivado de la escasez de información en México, se analizó el efecto de la distancia y densidad del asentamiento poblacional sobre la diversidad arbórea de áreas naturales tropicales, en forma global y por tipo de vegetación, y sobre su superficie forestal circundante.Métodos: Mediante una búsqueda en Google Scholar™, se seleccionaron documentos sobre cuatro tipos de selva y dos de bosque tropical en México. En total se extrajeron 109 valores de área de muestreo, superficie del macizo forestal, DAP, diversidad α, índice de Shannon, Simpson, equidad, distancia a la población más cercana, tamaño poblacional y antigüedad del decreto de protección. La diversidad α se estandarizó para 1 cm DAP y 1 ha. La relación área muestreada-diversidad se analizó mediante regresión logarítmica, y la relación diversidad biológica-distancia y tamaño poblacional mediante regresión logística.Resultados clave: En el análisis de 73 datos de diversidad, se encontró que la diversidad α estuvo relacionada positivamente con la distancia y negativamente con el tamaño de la población más cercana a las áreas naturales no protegidas. A medida que la distancia a la población más cercana aumenta, la diversidad α aumenta, y a medida que el tamaño de la población aumenta, la diversidad α disminuye. Estas relaciones se presentaron individualmente también con tres selvas y un bosque. Por el contrario, en el análisis de 36 datos de diversidad para las ANPs, no hubo relación.Conclusiones: La distancia y densidad de la población más cercana al área natural afectan la diversidad arbórea; ésta en 40 años ha disminuido 11.4% en los sitios aquí analizados. Se discute cómo las ANPs parecen funcionar en la conservación de los recursos biológicos en el trópico de México. Instituto de Ecología, A.C. 2019-04-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares application/pdf application/epub+zip application/xml https://abm.ojs.inecol.mx/index.php/abm/article/view/1484 10.21829/abm126.2019.1484 Acta Botanica Mexicana; No. 126 (2019) Acta Botanica Mexicana; Núm. 126 (2019) 2448-7589 0187-7151 spa https://abm.ojs.inecol.mx/index.php/abm/article/view/1484/4069 https://abm.ojs.inecol.mx/index.php/abm/article/view/1484/4070 https://abm.ojs.inecol.mx/index.php/abm/article/view/1484/1795 Derechos de autor 2019 Acta Botanica Mexicana https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | Martínez-Sánchez, José Luis Logistic relationship between tree species diversity of natural areas and human settlements in tropical Mexico |
| title | Logistic relationship between tree species diversity of natural areas and human settlements in tropical Mexico |
| title_full | Logistic relationship between tree species diversity of natural areas and human settlements in tropical Mexico |
| title_fullStr | Logistic relationship between tree species diversity of natural areas and human settlements in tropical Mexico |
| title_full_unstemmed | Logistic relationship between tree species diversity of natural areas and human settlements in tropical Mexico |
| title_short | Logistic relationship between tree species diversity of natural areas and human settlements in tropical Mexico |
| title_sort | logistic relationship between tree species diversity of natural areas and human settlements in tropical mexico |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/1484 |
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