Demografía y estructura poblacional de Dioon angustifolium (Zamiaceae) en el noreste de México

  • Gabriel Rubio-Méndez Programas Multidisciplinarios de Posgrado en Ciencias Ambientales, Universidad Autónoma de San Luis Potosí, San Luis Potosí
  • Laura Yañez-Espinosa Instituto de Investigación de Zonas Desérticas, Universidad Autónoma de San Luis Potosí, San Luis Potosí http://orcid.org/0000-0001-5211-3603
  • María Magdalena Salinas-Rodriguez Biología, Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, Querétaro
  • Karen Abigail Hernández-Hernández Programas Multidisciplinarios de Posgrado en Ciencias Ambientales, Universidad Autónoma de San Luis Potosí
  • David Balderas-González Programas Multidisciplinarios de Posgrado en Ciencias Ambientales, Universidad Autónoma de San Luis Potosí
Keywords: Cycads, demography, Dioon angustifolium, food use, Sierra Madre Oriental

Abstract

Background: Dioon angustifolium is an endemic species distributed in the northernmost Sierra Madre Oriental in Mexico. It is classified as an endangered species due to anthropogenic activities like illegal extraction for commercial purposes.

Question: What is the current status of Dioon angustifolium populations structure in its distribution range?

Species under study: Dioon angustifolium Miq. (Zamiaceae), an endemic species of the Sierra Madre Oriental in Mexico.

Study area and years of study: The study was conducted in three populations of D. angustifolium in Nuevo León and Tamaulipas during the summer of 2018.

Methods: The density and population structure of D. angustifolium was determined by transects of 100 m long. For each of the analyzed populations, a static life table was built.

Results: The highest density corresponded to the DA1 population and the lowest to DA3. This last population is dominated by individuals in the juvenile phase. The life tables indicate a high mortality rate in the first stages of establishment, which causes the populations to be in decline due to the lack of recruitment of new individuals.

Conclusions: The extraction of individuals for commercialization, as well as the change of land use decreases the size of the populations. According to information provided by locals, seeds are used to cook food like tortillas and atole, without having data on extraction volumes to quantify the effect on population dynamics.

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Author Biography

Laura Yañez-Espinosa, Instituto de Investigación de Zonas Desérticas, Universidad Autónoma de San Luis Potosí, San Luis Potosí
Profesora Investigadora de Tiempo completo en el Instituto de Investigación de Zonas Desérticas
Demografía y estructura poblacional de <em>Dioon angustifolium</em> (Zamiaceae) en el noreste de México

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Published
2019-12-19
How to Cite
Rubio-Méndez, G., Yañez-Espinosa, L., Salinas-Rodriguez, M. M., Hernández-Hernández, K. A., & Balderas-González, D. (2019). Demografía y estructura poblacional de <em>Dioon angustifolium</em&gt; (Zamiaceae) en el noreste de México. Botanical Sciences, 97(4), 685-690. https://doi.org/10.17129/botsci.2262