Fire dynamics in extreme climatic events in western amazon

Júnior, Luiz Augusto Siciliano da Silva; Delgado, Rafael Coll; Pereira, Marcos Gervásio; Teodoro, Paulo Eduardo; Silva, Carlos Antônio da

doi:10.1016/j.envdev.2019.06.005

Cited by 22 publications

(38 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to Da Silva Júnior, Delgado, Pereira, Teodoro, and da Silva Junior (2019) the extreme droughts in the Amazon have caused a considerable increase in the occurrence of fires, the results presented in this study revealed that the 2015/2016 drought surpassed the 2010 drought in intensity and extent. In another recent study conducted in the Amazon, researchers assessing fire dynamics under extreme weather events related to the Southern El Niño Oscillation in the Western Amazon found that the largest number of fires were recorded during the neutral phase and the largest burned area was found during La Niña (Da Silva Júnior et al, 2019). These authors also highlighted the vulnerability of the Amazon ecosystem to forest fires and the need to properly understand the impacts of the ENSO event in the Amazon region, as it plays an important role in water regimes.…”

Section: Introductionmentioning

confidence: 59%

“…Change in forest structure has direct impacts on the regional and global carbon cycle (Chagas et al, 2019;Yang et al, 2018). Studies conducted in the Amazon indicate that increased fires in this biome will be more frequent during extreme droughts and this will affect the carbon sink capacity of the Amazon (Silva & Junior et al, 2019;Yang et al, 2018). Other studies also point to the decrease and uncertainties of forest carbon sink capacity following fires in some parts of the world (Dore et al, 2008;Yue et al, 2016).…”

Section: Effects Of the Fires On The Gross Primary Productivity (Gpp)mentioning

confidence: 99%

See 1 more Smart Citation

Fire dynamics in Mato Grosso State, Brazil: the relative roles of gross primary productivity

Rossi

Santos

2020

Big Earth Data

View full text Add to dashboard Cite

The fires and biomass burning are responsible for affect ecosystem processes in a wide range of biomes at regional and global scales. In Brazil, the state of Mato Grosso is one of the most affected by the occurrence of forest fires. Thus, this study aims to quantify the longterm changes in the temporal and spatial patterns of fire occurrence and their effect on gross primary productivity (GPP) in the state of Mato Grosso, Brazil, considering the biomes that compose it. The images used in the study were acquired by satellite Terra and Aqua combined in the product MCD64A1.006, a monthly resolution of 500m by the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor, during the period from 01/10/2000 to 12/31/2018. The MOD17A2 product derived from the MODIS sensor provides the accumulated value of GPP. The points without the presence of burning presented higher values of GPP for all studied biomes. In some points with the presence of burning the GPP even decreased by 44.20%, 30.04% and 55.78% for Amazonia, Cerrado, and Pantanal, respectively. According to the results presented here, it is concluded that the burnings negatively impact gross primary production in the biomes of the state of Mato Grosso, Brazil and the dynamics of the burns do not keep up with the intensity of drought years. The use of cluster analysis techniques, such as principal component analysis (PCA), is an alternative to bigdata analysis when the objective is to evaluate the presence of forest burning in more than one biome.

show abstract

Section: Introductionmentioning

confidence: 59%

Section: Effects Of the Fires On The Gross Primary Productivity (Gpp)mentioning

confidence: 99%

Fire dynamics in Mato Grosso State, Brazil: the relative roles of gross primary productivity

Rossi

Santos

2020

Big Earth Data

View full text Add to dashboard Cite

show abstract

“…In a recent study the links between fire foci and meteorological variables were related to the ENSO in the Amazonian state of Acre. Da Silva Junior et al 9 emphasized a significant increase in the number of fires during the Neutrality phase as well as an increase in burned areas during the La Niña phase. This sudden change in fire foci frequency during Neutrality and the links between the most significantly burned areas during the La Niña phenomenon and not the El Niño event, may be associated with accelerated logging.…”

Section: Discussionmentioning

confidence: 99%

“…This sudden change in fire foci frequency during Neutrality and the links between the most significantly burned areas during the La Niña phenomenon and not the El Niño event, may be associated with accelerated logging. www.nature.com/scientificreports/ This is particularly the case for the regions with Brazil nut forests, that are currently today considered the most profitable extractive sector for Acre 9 . In addition to the high relevance of accelerated landscape changes from anthropogenic causes for fire foci, some authors have correlated the increase in fires in Amazon as a result of the changes to atmospheric circulation and increases in the North Atlantic Ocean Surface temperatures 17 .…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Persistent fire foci in all biomes undermine the Paris Agreement in Brazil

Silva

Teodoro

Delgado

et al. 2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

Brazil is one of the world’s biggest emitters of greenhouse gases (GHGs). Fire foci across the country contributes to these emissions and compromises emission reduction targets pledged by Brazil under the Paris Agreement. In this paper, we quantify fire foci, burned areas, and carbon emissions in all Brazilian biomes (i.e., Amazon, Cerrado, Caatinga, Atlantic Forest, Pantanal and Pampa). We analyzed these variables using cluster analysis and non-parametric statistics to predict carbon and CO2 emissions for the next decade. Our results showed no increase in the number of fire foci and carbon emissions for the evaluated time series, whereby the highest emissions occur and will persist in the Amazon and Cerrado biomes. The Atlantic Forest, Pantanal, Caatinga and Pampa biomes had low emissions compared to the Amazon and Cerrado. Based on 2030 projections, the sum of emissions from fire foci in the six Brazilian biomes will exceed 5.7 Gt CO2, compromising the national GHG reduction targets. To reduce GHG emissions, Brazil will need to control deforestation induced by the expansion of the agricultural frontier in the Amazon and Cerrado biomes. This can only be achieved through significant political effort involving the government, entrepreneurs and society as a collective.

show abstract