The Brazilian government has revised upward its estimate for the extent of Amazon rainforest destroyed last year. Figures released last week by Brazil’s National Space Research Agency (INPE) put Amazon deforestation at 6,207 square kilometres for the year ended July 31, 2015. That represents an increase of 6.5 percent relative to the estimate of 5,831 square kilometres published last December.

While deforestation in the Brazilian Amazon has fallen sharply over the past decade, a larger share of forest loss is now being driven by smallholders who are more difficult to control, posing new challenges for the Brazilian government.

The Brazilian government has said forest clearance in the Amazon has decreased by 18% over the past year to July 2014, but environmental NGOs disagree saying their data shows increased rates of forest loss. Brazil’s environment minister, Izabella Teixeira, said approximately 4800km2 was lost between August 2013 and July 2014. This was down from 5900km2 during the same period a year earlier. But WWF and Imazon disagree and say that alternative satellite monitoring systems, different to those used by the government, show a staggering increase in forest loss of over 460%. Ms Teixeira maintained that the official government estimate was the most accurate: “Anything else is speculation. We have been working hard to end deforestation.”