"The comprises the most biodiverse region in the world, but, despite being highly threatened by human-induced s, little is known about how those changes influence the remaining forest’s extent and configuration in Brazil’s arc of . We analysed the spatial and temporal dynamics and the configuration of forest cover in Brazil’s state of over 34 years. We calculated seven landscape metrics based on freely available satellite imagery to understand the habitat transformations. Overall, natural vegetation cover declined from 90.9% to 62.7% between 1986 and 2020, and fragmentation greatly increased, generating 78,000 forest fragments and 100,000 fragments of ‘natural vegetation’, which also includes forest."