Artículo
Fire history in the Araucaria araucana forests of Argentina: Human and climate influences
Mundo, Ignacio Alberto
; Kitzberger, Thomas
; Roig Junent, Fidel Alejandro
; Villalba, Ricardo
; Barrera, Marcelo Daniel
Fecha de publicación:
08/2012
Editorial:
Csiro Publishing
Revista:
International Journal Of Wildland Fire
ISSN:
1049-8001
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Little is known about drivers and trends of historic fire regimes in the Araucaria araucana forests of south-western Argentina. Fire history in these forests was reconstructed by the analysis of 246 fire-scarred partial cross-sections from this fire-resistant tree collected at 10 sites in Neuquén, northern Patagonia. Fire chronologies showed an increase in fire occurrence during the nineteenth century and a sharp decrease since the early twentieth century. The creation of Lanín National Park in 1937, the change in human activities, and the active suppression of wildfires led to a significant increase in mean fire intervals since 1930. In addition to these multidecadal to centennial scale drives of fire frequency, interannual variability in wildfire activity was associated with El Niño-Southern Oscillation. Years of widespread fire are related to negative departures of both Niño 3.4 and Pacific Decadal Oscillation indexes (i.e. La Niña conditions), as well as coincident phases of positive Southern Annular Mode and La Niña events. Temporal variations in the Araucaria fire history in Argentina clearly show the combined effect of human and climate influences on fire regimes. A comparison with previous fire history studies in the Araucaria forests of Chile reveals substantial differences related to differences in human activities on both sides of the Andes and the earlier implementation of protected areas in Argentina.
Palabras clave:
Dendroecology
,
Fire Scars
,
Patagonia
,
Tree Rings
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IANIGLA)
Articulos de INST. ARG. DE NIVOLOGIA, GLACIOLOGIA Y CS. AMBIENT
Articulos de INST. ARG. DE NIVOLOGIA, GLACIOLOGIA Y CS. AMBIENT
Articulos(INIBIOMA)
Articulos de INST. DE INVEST.EN BIODIVERSIDAD Y MEDIOAMBIENTE
Articulos de INST. DE INVEST.EN BIODIVERSIDAD Y MEDIOAMBIENTE
Citación
Mundo, Ignacio Alberto; Kitzberger, Thomas; Roig Junent, Fidel Alejandro; Villalba, Ricardo; Barrera, Marcelo Daniel; Fire history in the Araucaria araucana forests of Argentina: Human and climate influences; Csiro Publishing; International Journal Of Wildland Fire; 22; 2; 8-2012; 194-206
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