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Artículo

Device for the standard measurement of shoot flammability in the field

Jaureguiberry, PedroIcon ; Bertone, Gustavo AlejandroIcon ; Diaz, Sandra MyrnaIcon
Fecha de publicación: 11/2011
Editorial: Wiley
Revista: Austral Ecology
ISSN: 1442-9985
e-ISSN: 1442-9993
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Ecología

Resumen

Fire ecology has been hindered by the lack of comparable, affordable protocols to quantify the flammability of whole plants over large numbers of species.We describe a low-tech device that can be carried to the field and that allows highly standardized measurement of the flammability of whole individuals or portions up to 70 cm long.We illustrate its potential with results for 34 species belonging to different growth forms from central Argentina. The device consists of an 85 ¥ 60 cm half-cut metallic barrel placed horizontally and mounted on a removable metallic structure. It contains three parallel burners, a grill with an attached gauging thermometer and a blowtorch. Burners and blowtorch are connected to a propane?butane gas cylinder. Plant samples are placed on the grill and preheated with the burners for 2 min at 150°C.They are then ignited for 10 s with the blowtorch while the burners are kept on. Four parameters are measured for each sample: maximum temperature reached, burning time, burnt length and burnt biomass percentage. These parameters are used to construct a compound index of flammability for each sample that ranges between 0 (no flammability) and around 3 (maximum flammability).We obtained a wide range of values for flammability and all its components. Most of this variability was accounted for by differences between growth forms and species, rather than by differences at the level of replicates.This suggests that the device and protocol are sensitive enough to detect flammability differences among plants with different functional traits, and at the same time robust enough to produce consistent results among samples with similar traits. A major advantage is that plant architecture is kept almost intact, providing a flammability measure much closer to that of whole individuals in the field than those obtained by other standard protocols in use. The device and protocol presented here should facilitate the acquisition of comparable flammability data over large numbers of species from different floras and ecosystems, potentially contributing to several fields of research, such as functional ecology, evolutionary ecology and vegetation-atmosphere modelling.
Palabras clave: Comparative Ecology , Fire , Plant Architecture , Plant Functional Trait
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/13163
URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1442-9993.2010.02222.x/abstract
DOI: http://dx.doi.org/10.1111/j.1442-9993.2010.02222.x
Colecciones
Articulos(IMBIV)
Articulos de INST.MULTIDISCIPL.DE BIOLOGIA VEGETAL (P)
Citación
Jaureguiberry, Pedro; Bertone, Gustavo Alejandro; Diaz, Sandra Myrna; Device for the standard measurement of shoot flammability in the field; Wiley; Austral Ecology; 36; 7; 11-2011; 821-829
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