International Journal of Wildland Fire International Journal of Wildland Fire Society
Journal of the International Association of Wildland Fire

Understorey fire propagation and tree mortality on adjacent areas to an Amazonian deforestation fire

J. A. Carvalho Jr. A , C. A. Gurgel Veras B , E. C. Alvarado C G , D. V. Sandberg D , S. J. Leite E , R. Gielow F , E. R. C. Rabelo A and J. C. Santos F

A Universidade Estadual Paulista (UNESP), Avenida Ariberto Pereira da Cunha 333,12516-410, Guaratinguetá, SP, Brazil.

B Universidade de Brasília (UnB), Asa Norte, 70910-900, Brasília, DF, Brazil.

C University of Washington, School of Forest Resources, Mail Box 352100,Seattle, WA 98195, USA.

D USDA Forest Service, 3200 SW Jefferson Way, Corvallis, OR 97331, USA.

E Universidade do Estado de Mato Grosso (UNEMAT), Caixa Postal 324, 78580-000,Alta Floresta, MT, Brazil.

F Instituto Nacional de Pesquisas Espaciais (INPE), Rodovia Presidente Dutra km 40,12630-000, Cachoeira Paulista, SP, Brazil.

G Corresponding author. Email:

International Journal of Wildland Fire 19(6) 795-799
Submitted: 1 April 2008  Accepted: 1 May 2010   Published: 17 September 2010


Fire characteristics in tropical ecosystems are poorly documented quantitatively in the literature. This paper describes an understorey fire propagating across the edges of a biomass burn of a cleared primary forest. The experiment was carried out in 2001 in the Amazon forest near Alta Floresta, state of Mato Grosso, Brazil, as part of biomass burning experiments conducted in the same area since 1997. The vegetation of a 200 × 200-m2 forested area was clear-cut in early June and burned in late August. The understorey fire that escaped from the main burn was monitored across the four sides of the land clearing area. Flame-front spread varied between 0.14 and 0.35 m min–1. Maximum flame height was about 30 cm and typical flame depth was 10 to 15 cm. Tree mortality was investigated in 2003 in four areas adjacent to the biomass burning experiment. A total of 210 trees were counted in the four areas, 29.5% were dead as a consequence of the understorey fire that had occurred 2 years before. This fire-caused mortality is evidence of the synergistic effect between slash burning, tree mortality and future fire vulnerability on the forest–land clearing interfaces.

Additional keywords: biomass combustion, escaped fires, tropical forest.


Araújo TCarvalho JAJr.Higuchi NBrasil ACPJr.Mesquita ALA1999aA tropical rainforest clearing experiment by biomass burning in the state of Pará.Atmospheric Environment3319911998doi:10.1016/S1352-2310(98)00428-2

Araújo THiguchi NAndrade de Carvalho JJr.1999bComparison of formulae for biomass content determination in a tropical rainforest site in the state of Pará, Brazil.Forest Ecology and Management1174352doi:10.1016/S0378-1127(98)00470-8

Attiwill P1994The disturbance of forest ecosystems: the ecological basis for conservative management.Forest Ecology and Management63247300doi:10.1016/0378-1127(94)90114-7

Cadenasso MLTraynor MMPicket STA1997Functional location of forest edges: gradients of multiple physical factors.Canadian Journal of Forest Research27774782doi:10.1139/CJFR-27-5-774

Camargo CKapos V1995Complex edge effects on soil moisture and microclimate in Central Amazonian forest.Journal of Tropical Ecology11205221doi:10.1017/S026646740000866X

Carvalho JAJr.Santos JMSantos JCLeitão MMHiguchi N1995A tropical rainforest clearing experiment by biomass burning in the Manaus region.Atmospheric Environment2923012309doi:10.1016/1352-2310(95)00094-F

Carvalho JAJr.Higuchi NAraújo TMSantos JC1998Combustion completeness in a rainforest clearing experiment in Manaus, Brazil.Journal of Geophysical Research103D1113 19513 199doi:10.1029/98JD00172

Carvalho JAJr.Costa FSVeras CAGSandberg DVAlvarado ECGielow RSerra AMSantos JC2001Biomass fire consumption and carbon release rates of rainforest-clearing experiments conducted in northern Mato Grosso, Brazil.Journal of Geophysical Research10617 87717 887doi:10.1029/2000JD900791

Carvalho ERGurgel Veras CACarvalho JAJr.2002Experimental investigation of smouldering in biomass.Biomass and Bioenergy22283294doi:10.1016/S0961-9534(02)00005-3

Christian TJYokelson RJCarvalho JAJr.Griffith DWTAlvarado ECSantos JCSoares Neto TGGurgel Veras CAHao WM2007The Tropical Forest and Fire Emissions Experiment: trace gases emitted by smoldering logs and dung from deforestation and pasture fires in Brazil.Journal of Geophysical Research112D18308doi:10.1029/2006JD008147

Cochrane MA2003Fire science for rainforest.Nature421913919doi:10.1038/NATURE01437

Cochrane MALaurance WF2002Fire as a large-scale edge effect in Amazonian forests.Journal of Tropical Ecology18311325doi:10.1017/S0266467402002237

Cochrane MAAlencar ASchulze MDSouza CMNepstad DCLefebvre PDavidson EA1999Positive feedbacks in the fire dynamic of closed canopy tropical forests.Science284542118321835doi:10.1126/SCIENCE.284.5421.1832

Dale VH, Pearson SM (1997) Quantifying habitat fragmentation due to land use change in Amazonia. In ‘Tropical Forest Remnants: Ecology, Management and Conservation of Fragmented Communities’. (Eds W Laurance, R Bierregaard) pp. 400–409. (University of Chicago Press: Chicago, IL)

Fearnside PM (1990) Fire in the tropical rainforest of the Amazon basin. In ‘Fire in the Tropical Biota, Ecological Studies’. (Ed. JG Goldammer) Vol. 48, pp. 106–116. (Springer-Verlag: New York)

Kapos V1989Effects of isolation on the water status of forest patches in the Brazilian Amazon.Journal of Tropical Ecology5173185doi:10.1017/S0266467400003448

Kapos V, Wandelli E, Camargo JL, Ganade E (1997) Edge-related changes in environment and plant responses due to forest fragmentation in Central Amazonia. In ‘Tropical Forest Remnants: Ecology, Management and Conservation of Fragmented Communities’. (Eds W Laurance, R Bierregaard) pp. 33–44. (University of Chicago Press: Chicago, IL)

Kirchhoff VWJH, Escada PAS (1998) ‘The Wildfire of the Century – 1998.’ (Transtec Editorial: São José dos Campos, Brazil)

Laurance WFWilliamson GB2001Positive feedbacks among forest fragmentation, drought, and climate change in the Amazon.Conservation Biology1515291535doi:10.1046/J.1523-1739.2001.01093.X

Laurance WFWilliamson GBDelamonica POliveira ALovejoy TEGascon CPohl L2001Effects of a strong drought on Amazonian forest fragments and edges.Journal of Tropical Ecology17771785

Meggers BJ1994Archeological evidence for the impact of mega-Niño events on Amazonia during the past two millennia.Climatic Change28321338

Nepstad DC, Moreira AG, Alencar AA (1999) ‘Flames in the Rainforest: Origins, Impacts and Alternatives to Amazonian Fire, the Pilot Program to Conserve the Brazilian Rain Forest.’ (World Bank and the Secretariat for the Coordination of Amazon Affairs: Brasília, Brazil)

Rabelo ERCVeras CAGCarvalho JAJr.Alvarado ECSandberg DVSantos JC2004Log smoldering after an Amazonian deforestation fire.Atmospheric Environment382203211doi:10.1016/J.ATMOSENV.2003.09.065

Soares Neto TGCarvalho JAJr.Veras CAGAlvarado EGielow RLincon ENChristian TJYokelson RJSantos JC2009Consumption and CO2, CO and main hydrocarbon gas emissions in an Amazonian forest clearing fire.Atmospheric Environment43438446doi:10.1016/J.ATMOSENV.2008.07.063

Uhl CKauffman JB1990Deforestation, fires susceptibility, and potential tree responses to fire in the eastern Amazon.Ecology71437449doi:10.2307/1940299

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