Mostrar el registro sencillo del ítem
dc.contributor.author
Bravo, Sandra
dc.contributor.author
Kuntz, C.
dc.contributor.author
Grau, Hector Ricardo
dc.contributor.author
Aráoz, Ezequiel
dc.date.available
2019-03-27T20:48:24Z
dc.date.issued
2010-10
dc.identifier.citation
Bravo, Sandra; Kuntz, C.; Grau, Hector Ricardo; Aráoz, Ezequiel; Fire-rainfall relationships in Argentine Chaco savannas; Academic Press Ltd - Elsevier Science Ltd; Journal of Arid Environments; 74; 10; 10-2010; 1319-1323
dc.identifier.issn
0140-1963
dc.identifier.uri
http://hdl.handle.net/11336/72695
dc.description.abstract
We used dendroecological techniques to date fire scars in woody species growing in a subtropical savanna of the Argentine Chaco dry forests, and to explore the temporal trends of fire with rainfall variability at different temporal scales during the 20th century. Eight sampling sites were located along an ecotone between savanna and a dry forest, and a composite chronology was developed for a savanna, based on a total of 21 fire dates. The mean fire frequency was 0.18 fires year-1 and the mean fire interval was 3.3 years. The period post 1971 (which had 22% more rainfall) experienced a fire frequency more than two times higher than the period 1925-1970 (p<0.05). Decadal fire frequency was correlated to 10-years moving average rainfall (R2=0.58). Superposed Epoch Analysis showed that fires occur during years of above-average rainfall, and extensive fires tend to follow two years of above-average rainfall, all these associations being statistically significant. These results indicate a climatic control of fire regime, associated to enhanced fine fuels production during years of high rainfall, and imply that regional increase in rainfall associated to global changes in atmospheric circulation are affecting local ecosystems by significantly changing their disturbance regime.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Academic Press Ltd - Elsevier Science Ltd
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Climate
dc.subject
Fire
dc.subject
Fire Frequency
dc.subject
Precipitation
dc.subject
Temporal Changes
dc.subject.classification
Otras Ciencias Biológicas
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Fire-rainfall relationships in Argentine Chaco savannas
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-03-26T13:58:39Z
dc.journal.volume
74
dc.journal.number
10
dc.journal.pagination
1319-1323
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Bravo, Sandra. Universidad Nacional de Misiones. Facultad de Ciencias Forestales; Argentina
dc.description.fil
Fil: Kuntz, C.. Instituto Nacional de Tecnología Agropecuaria; Argentina
dc.description.fil
Fil: Grau, Hector Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Laboratorio de Investigaciones Ecológicas de las Yungas; Argentina
dc.description.fil
Fil: Aráoz, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Laboratorio de Investigaciones Ecológicas de las Yungas; Argentina
dc.journal.title
Journal of Arid Environments
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1016/j.jaridenv.2010.04.010
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0140196310001084
Archivos asociados