A study published in May in the journal Perspectives in Ecology and Conservation points out that transforming around 80% of the Amazon into environmental conservation areas would cost Brazil, per year, seven times less per hectare than the European Union invests to maintain all its areas of conservation. preservation. According to researchers, Brazil would spend between 1.7 and 2.8 billion dollars a year to formally protect 3.5 million km² of forest — equivalent to 83% of the total extension of the Amazon biome in Brazil. Currently, Amazonian conservation areas extend over 2.2 million km², or 51% of the biome.