Persistencia y crecimiento de especies nativas afectadas por incendios forestales, Provincia de Concepción, Región del Bío-Bío, Chile.
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Date
2024
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Universidad de Concepción
Abstract
El cambio climático no solo ha incrementado considerablemente la frecuencia en la que ocurren los incendios forestales, sino que también la magnitud de daño que producen en los ecosistemas. A raíz de esto surgió la necesidad de conocer la respuesta de la vegetación nativa después de un incendio. En este estudio se recopiló información de la riqueza de especies después de cinco años de un incendio y a los meses de transcurrido el evento, además se obtuvieron datos del crecimiento en altura de las especies. Los resultados obtenidos indicaron que las especies Nothofagus obliqua, Cryptocaria alba y Escallonia pulverulenta tienen una de las mejores respuesta post incendio en comparación a otras, tales como Azara integrifolia o Luma apiculata. Respecto a los distintos sitios estudiados se logró obtener datos importantes del progreso de la vegetación durante el paso de tiempo, ya que en la zona afectada hace más de cinco años se obtuvo una densidad de 2285 árb ha-1 con alturas promedio cercanas a los seis metros. Además, se concluyó que con el paso del tiempo a corto plazo no habría un aumento significativo de la riqueza de especies. El estudio sirvió para aportar información de la respuesta positiva de la vegetación nativa a incendios forestales, sugiriendo que la restauración pasiva puede ser suficiente y de bajo costo.
Climate change has not only significantly increased the frequency of the forest fires but also the magnitude of the damage they cause in ecosystems. As a result, there has been a growing need to understand the response of native vegetation following a fire. This study compiled information on species richness five years after a fire and in the months following the event. Additionally, data on the height growth of species were collected. The results indicated that species such as Nothofagus obliqua, Cryptocaria alba, and Escallonia pulverulenta exhibit a more robust post-fire response compared to others, such as Azara integrifolia or Luma apiculata. Regarding the various sites studied, significant data on vegetation progress over time were obtained. In the area affected five years ago, a density of 2285 trees ha-1 was recorded, with average heights approaching six meters. Furthermore, it was concluded that in the short term, there would not be a significant increase in species richness. The study contributed valuable insights into the positive response of native vegetation to forest fires, suggesting that passive restoration may be sufficient and cost-effective.
Climate change has not only significantly increased the frequency of the forest fires but also the magnitude of the damage they cause in ecosystems. As a result, there has been a growing need to understand the response of native vegetation following a fire. This study compiled information on species richness five years after a fire and in the months following the event. Additionally, data on the height growth of species were collected. The results indicated that species such as Nothofagus obliqua, Cryptocaria alba, and Escallonia pulverulenta exhibit a more robust post-fire response compared to others, such as Azara integrifolia or Luma apiculata. Regarding the various sites studied, significant data on vegetation progress over time were obtained. In the area affected five years ago, a density of 2285 trees ha-1 was recorded, with average heights approaching six meters. Furthermore, it was concluded that in the short term, there would not be a significant increase in species richness. The study contributed valuable insights into the positive response of native vegetation to forest fires, suggesting that passive restoration may be sufficient and cost-effective.
Description
Tesis presentada para optar al título profesional de Ingeniera en Conservación de Recursos Naturales
Keywords
Biodiversidad Chile, Plantas endémicas, Incendios forestales Chile, Región del Biobío (Chile)