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Alarming patterns of mature forest loss in the Brazilian Atlantic Forest

Abstract

The Brazilian Atlantic Forest is a global biodiversity hotspot that harbours a high number of endemic species and provides important ecosystem services. However, a long history of deforestation means that only 24% of its original forest cover remains and studies are needed to examine the spatial and temporal patterns of forest loss to better understand the effectiveness of current laws in curbing deforestation in this important biome. Here we provide a comprehensive quantitative and qualitative time-series analysis of mature forest loss within the Brazilian Atlantic Forest. From 2010 to 2020, we detected 14,401 deforestation polygons, resulting in a loss of 186,289 ha, most of it with a high likelihood of illegality. These losses occurred mainly in small-sized patches on private lands for agricultural expansion, but also in protected areas and Indigenous lands. Deforestation is concentrated in two hotspots that involve different agricultural actors and land-use change processes. This pattern could lead to species extinctions, ecosystem service losses and a weakened capacity to address climate change, thus challenging the effectiveness of mechanisms currently used to counter deforestation. Implementing further incentive, protection and enforcement measures could aid in progress towards zero deforestation in this critically important habitat.

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Fig. 1: Limits defined by the Atlantic Forest protection law and deforestation locations from 2010 to 2020.
Fig. 2: Overall deforestation area and rate analysed for land tenure types from 2010–2020.
Fig. 3: Land use and cover observed in deforestation polygons in each land tenure type across the Atlantic Forest.
Fig. 4: Deforestation hotspots in the Atlantic Forest.
Fig. 5: Deforestation and land use and cover in small, medium and large private properties.

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Data availability

The datasets generated during and/or analysed during the current study are available via Zenodo at https://doi.org/10.5281/zenodo.13774392 (ref. 65). Source data are provided with this paper.

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Acknowledgements

This work results from the cooperation agreement (01340.005517/2017-53) between Brazil’s National Institute for Space Research (INPE) and the SOS Mata Atlântica Foundation for the development of the project ‘Annual Update of the Atlas of Atlantic Forest Remnants’. We thank INPE researchers L. Maurano and C. Rennó, who supported the process of validating, discussing and statistically analysing the data and the NICFI Satellite Data Program for providing Planet-NICFI imagery. This work was also supported by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior–Brasil (CAPES) under Finance Code 001.

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S.A. conceptualized the study, produced, processed and analysed data and reviewed and discussed results. J.P.M. conceptualized the study, reviewed and discussed results and wrote the text. L.F.G.P conceptualized the study, reviewed and discussed results and wrote the text. M.R. conceptualized the study and reviewed and discussed results. G.C.G. accessed, analysed and processed data. B.V.A. accessed, analysed and processed data, designed figures and reviewed and discussed results.

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Correspondence to Silvana Amaral or Luis Fernando Guedes Pinto.

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Amaral, S., Metzger, J.P., Rosa, M. et al. Alarming patterns of mature forest loss in the Brazilian Atlantic Forest. Nat Sustain 8, 256–264 (2025). https://doi.org/10.1038/s41893-025-01508-w

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