Post-fire seed bank in a xerophytic shrubland

  • Yuriana Martínez Orea Departamento de Ecología y Recursos Naturales, Facultad de Ciencias, Universidad Nacional Autónoma de México
  • Silvia Castillo Argüero Departamento de Ecología y Recursos Naturales, Facultad de Ciencias, Universidad Nacional Autónoma de México
  • M. Patricia Guadarrama Chávez Unidad Multidisciplinaria SISAL Mérida. Facultad de Ciencias Universidad Nacional Autónoma de México
  • Irene Sánchez Departamento de Ecología y Recursos Naturales, Facultad de Ciencias, Universidad Nacional Autónoma de México
Keywords: Fire, seed bank, xerophytic shrubland

Abstract

Through the seedling emergence method we studied the effects of fire on the soil seed bank of a xerophytic shrubland in two consecutive years. We compared its composition and abundance in two sites, one burned and one unburned. An important proportion of seeds died due to the high temperatures reached by fire. In addition, species richness and, diversity were also negatively affected. These variables showed statistical differences between sites and years. After one year, seed bank abundance and diversity reached higher values. Dominant species were perennial herbs in terms of species number, and in terms of seedling abundance the dominant life form was a tree. However, fire was not a determinant factor in terms of species composition. These results are important to explain the changes in vegetation after a fire, specially if we consider that this site is a natural preserve immersed in an urban area.

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Post-fire seed bank in a xerophytic shrubland

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Published
2019-05-20
How to Cite
Martínez Orea, Y., Castillo Argüero, S., Guadarrama Chávez, M. P., & Sánchez, I. (2019). Post-fire seed bank in a xerophytic shrubland. Botanical Sciences, 86, 11-21. https://doi.org/10.17129/botsci.2316
Section
ECOLOGY / ECOLOGÍA