Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/29127
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dc.contributor.authorAlvarado, Swanni Ten_UK
dc.contributor.authorFornazari, Tamiresen_UK
dc.contributor.authorCóstola, Andresaen_UK
dc.contributor.authorMorellato, Leonor Patrícia Cerdeiraen_UK
dc.contributor.authorSilva, Thiago Sanna Freireen_UK
dc.date.accessioned2019-03-28T01:02:10Z-
dc.date.available2019-03-28T01:02:10Z-
dc.date.issued2017-07en_UK
dc.identifier.urihttp://hdl.handle.net/1893/29127-
dc.description.abstractFire is a natural disturbance in savannas, and defines vegetation physiognomy and structure, often influencing species diversity. Fire activity is determined by a wide range of factors, including long and short term climatic conditions, climate seasonality, wind speed and direction, topography, and fuel biomass. In Brazil, fire shapes the structure and composition of cerrado savannas, and the impact of fire on vegetation dynamics is well explored, but the drivers of variation in fire disturbance across landscapes and over time are still poorly understood. We reconstructed 31 years of fire occurrence history in the Serra do Cipó region, a highly-diverse cerrado landscape, located in the southern portion of the Espinhaço mountain range, state of Minas Gerais, Southeastern Brazil. We mapped burn scars using a time series of Landsat satellite images from 1984 to 2014. Our questions were 1) How does fire occurrence vary in time and space across the Serra do Cipó cerrado landscape? 2) Which climatic drivers may explain the spatial and inter-annual variation in fire occurrence on this landscape? 3) Is fire occurrence in this cerrado landscape moisture-limited or fuel-limited? We evaluated the inter-annual variation and distribution of burned areas, and used linear models to explain this variation in terms of rainfall amount (determinant of fuel load production), seasonal rainfall distribution (determinant of dry fuel availability), abnormality of precipitation (Standardized Precipitation Index – SPI), and vegetation type (Enhanced Vegetation Index – EVI). Contrary to our expectations, annual rainfall volume was weakly and negatively correlated with burned area, and the strongest predictor of burned area was drought during the ignition season. The length of the dry season and the distribution of rain along the season determined ignition probability, increasing fire occurrence during the driest periods. We conclude that the mountain cerrado vegetation at Serra do Cipó has a moisture-dependent fire regime, in contrast to the fuel-dependent fire regimes described for African savannas. These findings imply that savannas at different continents may have different recovery and resilience capabilities when subjected to changes in the fire regime, caused by direct anthropogenic activities or indirectly through climatic changes. The possible effects of these changes on cerrado landscapes are still unknown, and future studies should investigate if currently observed fire regimes have positive or negative impacts on vegetation diversity, recovery, resilience and phenology, thus helping managers to include fire management as conservation measure.en_UK
dc.language.isoenen_UK
dc.publisherElsevier Ltden_UK
dc.relationAlvarado ST, Fornazari T, Cóstola A, Morellato LPC & Silva TSF (2017) Drivers of fire occurrence in a mountainous Brazilian cerrado savanna: tracking long-term fire regimes using remote sensing. Ecological Indicators, 78, pp. 270-281. https://doi.org/10.1016/j.ecolind.2017.02.037en_UK
dc.rightsThe publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.en_UK
dc.rights.urihttp://www.rioxx.net/licenses/under-embargo-all-rights-reserveden_UK
dc.subjectalvaradoen_UK
dc.subjectbiomassen_UK
dc.subjectburned areaen_UK
dc.subjectcorresponding authoren_UK
dc.subjectden_UK
dc.subjectfire frequencyen_UK
dc.subjectfuel limitationen_UK
dc.subjectignition seasonen_UK
dc.subjectmiss swanni ten_UK
dc.subjectmoisture limitationen_UK
dc.subjectphen_UK
dc.subjects institutionen_UK
dc.subjectseasonalityen_UK
dc.subjectuniversidade estadual paulistaen_UK
dc.titleDrivers of fire occurrence in a mountainous Brazilian cerrado savanna: tracking long-term fire regimes using remote sensingen_UK
dc.typeJournal Articleen_UK
dc.rights.embargodate2999-12-31en_UK
dc.rights.embargoreason[1-s2.0-S1470160X17301000-main.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.en_UK
dc.identifier.doi10.1016/j.ecolind.2017.02.037en_UK
dc.citation.jtitleEcological Indicatorsen_UK
dc.citation.issn1470-160Xen_UK
dc.citation.volume78en_UK
dc.citation.spage270en_UK
dc.citation.epage281en_UK
dc.citation.publicationstatusPublisheden_UK
dc.citation.peerreviewedRefereeden_UK
dc.type.statusVoR - Version of Recorden_UK
dc.author.emailthiago.sf.silva@stir.ac.uken_UK
dc.citation.date27/03/2017en_UK
dc.contributor.affiliationSao Paulo State University (Universidade Estadual Paulista)en_UK
dc.contributor.affiliationSao Paulo State University (Universidade Estadual Paulista)en_UK
dc.contributor.affiliationSao Paulo State University (Universidade Estadual Paulista)en_UK
dc.contributor.affiliationSao Paulo State University (Universidade Estadual Paulista)en_UK
dc.contributor.affiliationSao Paulo State Universityen_UK
dc.identifier.isiWOS:000406435900029en_UK
dc.identifier.scopusid2-s2.0-85016063964en_UK
dc.identifier.wtid1239202en_UK
dc.contributor.orcid0000-0001-8174-0489en_UK
dc.date.accepted2017-02-24en_UK
dcterms.dateAccepted2017-02-24en_UK
dc.date.filedepositdate2019-03-27en_UK
rioxxterms.apcnot requireden_UK
rioxxterms.typeJournal Article/Reviewen_UK
rioxxterms.versionVoRen_UK
local.rioxx.authorAlvarado, Swanni T|en_UK
local.rioxx.authorFornazari, Tamires|en_UK
local.rioxx.authorCóstola, Andresa|en_UK
local.rioxx.authorMorellato, Leonor Patrícia Cerdeira|en_UK
local.rioxx.authorSilva, Thiago Sanna Freire|0000-0001-8174-0489en_UK
local.rioxx.projectInternal Project|University of Stirling|https://isni.org/isni/0000000122484331en_UK
local.rioxx.freetoreaddate2267-02-28en_UK
local.rioxx.licencehttp://www.rioxx.net/licenses/under-embargo-all-rights-reserved||en_UK
local.rioxx.filename1-s2.0-S1470160X17301000-main.pdfen_UK
local.rioxx.filecount1en_UK
local.rioxx.source1470-160Xen_UK
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