Warplanes dump water on Amazon as Brazil military begins fighting fires

But outside of Rondonia, the government had yet to provide any operational details for other states. The Defense Ministry said in a briefing on Saturday that 44,000 troops were available in Brazil's northern Amazon region but did not say how many would be used where and what they would do.

Military personnel around Porto Velho appeared to be largely coordinating firefighting efforts, according to a Reuters witness.

Asked for additional details, the Defense Ministry told Reuters in a statement that in all seven states that have asked for help, the military is planning operations to support firefighting initiatives already underway.

Justice Minister Sergio Moro had also authorized a force of military police to assist in fighting the fires, with 30 set to be sent from Brasilia to Porto Velho. The president's office posted to Twitter a photo of police officers on a plane bound for Rondonia set to arrive at noon.

Environment Minister Ricardo Salles posted a video showing a caravan of yellow fire prevention trucks and other government vehicles, saying they were on the ground responding in Rondonia.

Colombian President Ivan Duque said on Sunday he would seek a conservation pact with other Amazonian countries - first in bi-lateral meetings in Peru this week and then at the United Nations General Assembly.

"Colombia wants to lead a pact, a conservation pact, between the countries that have Amazon territory," Duque said after meeting with an indigenous community in the Amazonian city of Leticia in southern Colombia. "We must understand the protection of our Mother Earth and our Amazon is a duty, a moral duty."

The Amazon is the world's largest tropical rain forest and is seen as vital to the fight against climate change because of the vast amounts of carbon dioxide that it absorbs.

The Amazon, which provides 20 percent of the planet's oxygen, is home to an estimated one million indigenous people from up to 500 tribes as well some three million species of plants and animals, including jaguars, sloths, giant otters, river dolphins, howler monkeys, toucans, reptiles, frogs and insects.

Brazilian climate scientist Carlos Nobre said he worries if 20-25 percent of the ecosystem is destroyed that the Amazon could reach a tipping point, after which it would enter a self-sustaining period of dieback as the forest converts to savannah. Nobre warned that it is not far off with already 15-17 percent of the rain forest having been destroyed.

Reuters