Rasgos funcionales relacionados al fuego en 5 especies forestales en una formación vegetal subxerófila en la Selva Central del Perú
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Authors
Monteverde Calderón, Enrique Gianlucca
Abstract
Cada vez está más claro cómo el cambio climático afecta a la diversidad vegetal de los bosques tropicales húmedos. En consecuencia, es esencial recopilar datos ecofisiológicos sobre diversas especies arbóreas a partir de sus características funcionales. Este estudio evaluó la ramificación (IDA), la densidad básica (DB), el grosor de la corteza (Ect) y describió la anatomía de esta en cinco especies que pueden estar adaptadas al fuego: Astronium fraxinifolium, Curatella americana, Luehea paniculata, Machaerium hirtum, y Physocalymma scaberrimum. Las mediciones de los rasgos funcionales se realizaron en dos poblaciones: una que presentaba indicios de quemaduras y otra que no. Para determinar el impacto del fuego en los atributos investigados, se compararon los resultados de las dos poblaciones. Los valores de IDA, DB y Ect fueron, de media, de 2,662 m-1 , 0,461 g/cm3 y 8,636 mm en los árboles quemados y de 1,945 m-1 , 0,467 g/cm3 y 5,150 mm en los árboles no quemados. Por último, se encontró que una mayor ramificación y una corteza más gruesa pueden sugerir una especie adaptada al fuego, sin embargo, no hubo asociación estadísticamente significativa (p=0,45) entre la densidad básica de ramas y el impacto de las quemaduras en los árboles.
It is becoming more and more clear how plant diversity in humid tropical forests is impacted by climate change. Consequently, it is essential to gather ecophysiological data about various tree species using their functional characteristics. This study evaluated branching (IDA), basic density (DB), bark thickness (Ect), and described bark anatomy in five species that may be adapted to fire: Astronium fraxinifolium, Curatella americana, Luehea paniculata, Machaerium hirtum, and Physocalymma scaberrimum. The study also focused on characterizing functional traits related to fire resistance in a subxerophytic vegetation of the Chanchamayo valley. Functional trait measurements were done on two populations: one that showed evidence of burns and the other that did not. To ascertain the impact of fire on the attributes under investigation, the outcomes of the two populations were compared. IDA, DB, and Ect values were, on average, 2,662 m-1, 0,461 g/cm3, and 8,636 mm in burned trees and 1,945 m-1, 0,467 g/cm3, and 5,150 mm in unburned trees. Lastly, it was found that more branching and thicker bark may suggest a fire-adapted species, however there was no statistically significant association (p=0.45) between the basic density of branches and the impact of the burns on the trees.
It is becoming more and more clear how plant diversity in humid tropical forests is impacted by climate change. Consequently, it is essential to gather ecophysiological data about various tree species using their functional characteristics. This study evaluated branching (IDA), basic density (DB), bark thickness (Ect), and described bark anatomy in five species that may be adapted to fire: Astronium fraxinifolium, Curatella americana, Luehea paniculata, Machaerium hirtum, and Physocalymma scaberrimum. The study also focused on characterizing functional traits related to fire resistance in a subxerophytic vegetation of the Chanchamayo valley. Functional trait measurements were done on two populations: one that showed evidence of burns and the other that did not. To ascertain the impact of fire on the attributes under investigation, the outcomes of the two populations were compared. IDA, DB, and Ect values were, on average, 2,662 m-1, 0,461 g/cm3, and 8,636 mm in burned trees and 1,945 m-1, 0,467 g/cm3, and 5,150 mm in unburned trees. Lastly, it was found that more branching and thicker bark may suggest a fire-adapted species, however there was no statistically significant association (p=0.45) between the basic density of branches and the impact of the burns on the trees.
Description
Universidad Nacional Agraria La Molina. Facultad de Ciencias Forestales.
Departamento Académico de Manejo Forestal
Keywords
Carácter funcional
Citation
Date
2024
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Excepto si se señala otra cosa, la licencia del ítem se describe como info:eu-repo/semantics/openAccess