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Modelling fire frequency in a Cerrado savanna protected area

Pereira Júnior, Alfredo C ; Oliveira, Sofia L J ; Pereira, José M C ; Turkman, Maria Antónia Amaral Bond-Lamberty, Ben

PloS one, 2014-07, Vol.9 (7), p.e102380-e102380 [Periódico revisado por pares]

United States: Public Library of Science

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Título:
Modelling fire frequency in a Cerrado savanna protected area
Autor: Pereira Júnior, Alfredo C ; Oliveira, Sofia L J ; Pereira, José M C ; Turkman, Maria Antónia Amaral
Bond-Lamberty, Ben
Assuntos: Agricultural land ; Agricultural practices ; Algorithms ; Biodiversity ; Biodiversity conservation ; Biological diversity ; Biological diversity conservation ; Biology and Life Sciences ; Brazil ; Burning ; Computer and Information Sciences ; Conservation of Natural Resources - methods ; Data processing ; Disasters ; Dry season ; Earth resources technology satellites ; Earth Sciences ; Ecology and Environmental Sciences ; Ecosystem ; Ecosystems ; Emissions ; Farmlands ; Fire effects ; Fires ; Forest & brush fires ; Geography ; Grassland ; Grasslands ; Greenhouse gases ; Humans ; Image analysis ; Image processing ; Intervals ; Land cover ; Land use ; Landsat ; Landsat satellites ; Models, Theoretical ; National parks ; Native peoples ; Parameter estimation ; Parks & recreation areas ; Physical Sciences ; Prescribed fire ; Preservation ; Probability distribution ; Protected areas ; Random variables ; Remote sensing ; Research and Analysis Methods ; Satellite imagery ; Savannahs ; Seasons ; Time Factors ; Time series ; Trees - growth & development ; Vegetation ; Woodlands
É parte de: PloS one, 2014-07, Vol.9 (7), p.e102380-e102380
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
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Competing Interests: The authors have declared that no competing interests exist.
Conceived and designed the experiments: ACPJ JMCP. Performed the experiments: ACPJ. Analyzed the data: ACPJ SLJO MAAT JMCP. Contributed reagents/materials/analysis tools: ACPJ SLJO. Wrote the paper: SLJO ACPJ JMCP MAAT.
Descrição: Covering almost a quarter of Brazil, the Cerrado is the world's most biologically rich tropical savanna. Fire is an integral part of the Cerrado but current land use and agricultural practices have been changing fire regimes, with undesirable consequences for the preservation of biodiversity. In this study, fire frequency and fire return intervals were modelled over a 12-year time series (1997-2008) for the Jalapão State Park, a protected area in the north of the Cerrado, based on burned area maps derived from Landsat imagery. Burned areas were classified using object based image analysis. Fire data were modelled with the discrete lognormal model and the estimated parameters were used to calculate fire interval, fire survival and hazard of burning distributions, for seven major land cover types. Over the study period, an area equivalent to four times the size of Jalapão State Park burned and the mean annual area burned was 34%. Median fire intervals were generally short, ranging from three to six years. Shrub savannas had the shortest fire intervals, and dense woodlands the longest. Because fires in the Cerrado are strongly responsive to fuel age in the first three to four years following a fire, early dry season patch mosaic burning may be used to reduce the extent of area burned and the severity of fire effects.
Editor: United States: Public Library of Science
Idioma: Inglês

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Modelling fire frequency in a Cerrado savanna protected area

Pereira Júnior, Alfredo C ; Oliveira, Sofia L J ; Pereira, José M C ; Turkman, Maria Antónia Amaral Bond-Lamberty, Ben

United States: Public Library of Science

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