The Atlantic Forest, One Of The Richest In Global Biodiversity, Is Plagued By Wildfires 

Wildfire in Guaiaçara, São Paulo, Brazil. The Atlantic Forest region is extremely dry, especially from July to October. (Loan Barbosa/SOS Mata Atlântica)

Dry weather and increasing deforestation of Brazil’s Atlantic Forest have left it vulnerable to the lightning-fast spread of wildfires that already occurred in the Amazon and Pantanal forests.

Brazilian satellites detected 13,015 wildfires in the Atlantic Forest between January and early September, said Alberto Setzer, a scientist at the National Institute for Space Research’s (INPE) Quemaidas Program.


The figure “accounts for 23 percent more fires than in 2020. In the last three years, the satellites verified an increasing number of wildfires in the biome. The worst months tend to be July, August, September and October, when we face severe drought,” Setzer told Zenger.

Wildfire in a protected area in Lins, São Paulo. (Loan Barbosa/SOS Mata Atlântica)

The Ilha Grande National Park, a protected area in the municipality of Guaíra, on the border of Paraná and Mato Grosso do Sul, caught fire on August 19. Firefighters suspect the forest was intentionally burned.

This is not the first time a blaze has ravaged the park. In August 2019, almost 116,000 of its 187,000 acres went up in flames, destroying 62 percent of the protected area.

A falling balloon ignited the forest of the Juquery State Park, in the city of Franco da Rocha, in São Paulo’s metropolitan area, on August 22. The fire destroyed about 2,471 acres, nearly half of the park.

The use of these balloons puts the airspace at risk and is considered an environmental crime.

Wildfires in August and September in the state of São Paulo, according to INPE’s records. (BDQueimadas/Inpe) 

SOS in the Atlantic Forest

The SOS Mata Atlântica Foundation, a Brazilian environmental NGO that closely monitors wildfires spreading in the biome, claims that most are accidental.

Intentional burns are different from fires, said Luis Fernando Guedes Pinto, the organization’s scientific director.

“We have several records of intentional burns … in the Amazon, set by people who deforest hoping to occupy the land. The records for the Atlantic Forest show that most wildfires have been accidental, triggered by balloons, problems in the electrical grid and even people who burn garbage. Fires end up spreading through the forest, losing control,” said Guedes Pinto.

“The Atlantic Forest region in Brazil is extremely dry, especially from July to October. Not only is the forest dry, but all the vegetation surrounding it. Everything ends up becoming flammable, and any spark can result in a small or large wildfire,” he said.

Charred ground after the fires in São Paulo’s Atlantic Forest. (Loan Barbosa/SOS Mata Atlântica)

SOS Mata Atlântica promotes public policies for the biome’s preservation. The organization monitors fires, conducts research, creates model projects and fosters dialogue between public and private sectors.

Guedes Pinto said federal and state environmental agencies invest little in preventing and fighting fires in Brazilian biomes.

“They are failing to prevent the fires because they are preventable. … The bodies, secretariats and institutes that should take care of the environment have a reduced budget and a small team, with little infrastructure,” he said.

Luis Fernando Guedes Pinto is the scientific director of Brazil’s SOS Mata Atlântica Foundation. (Courtesy of SOS Mata Atlântica)

The Atlantic Forest is one of the richest forests in biodiversity on the planet, and many of its species are threatened. The biome currently covers about 15 percent of Brazil’s land, but it used to be larger. Only 12.4 percent of the original forest remains, and 80 percent is in private hands.

Currently, the states most affected by the wildfires in the Atlantic Forest are São Paulo (26 percent), Paraná (23 percent), Santa Catarina (12 percent) and Rio Grande do Sul (7 percent), according to INPE surveys.

Although threatened by humans, the forest spans through 17 Brazilian states: Rio Grande do Sul, Santa Catarina, Paraná, São Paulo, Goiás, Mato Grosso do Sul, Rio de Janeiro, Minas Gerais, Espírito Santo, Bahia, Alagoas, Sergipe, Paraíba, Pernambuco, Rio Grande do Norte, Ceará and Piauí.

The Atlantic Forest municipalities with the most significant number of fires in 2021 are Estrela d’Oeste and Cajuru, in the state of São Paulo, followed by Prudentópolis in Paraná and São Francisco de Paula, in Rio Grande do Sul’s mountainous region, Setzer said.

The Brazilian Institute of Geography and Statistics indicates that Brazil has six biomes: the Amazon, Cerrado, Caatinga, Atlantic Forest, Pantanal and Pampa. The Amazon is the largest, covering nearly 40 percent of the country’s land.

 Translated and edited by Gabriela Olmos; edited by Melanie Slone and Fern Siegel.



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