Biological invasion threatens the sandy-savanna Mussununga ecosystem in the Brazilian Atlantic Forest

摘要: The sandy-savanna Mussununga is a little-known ecosystem that already presenting signs of degradation due to effects invasive species, anthropogenic disturbances, and land-use change. We investigated the effect biological invasion by Acacia mangium A. auriculiformis, disturbance promoted fire Eucalyptus management, as well change around patches in this neglected ecosystem. occurrence negatively related abundance, basal area, height native woody positively correlated with proportion dead plants. There trend vegetation type from open savanna woodland Acacia. disturbed planting species past have greater richness layer (large shrubs trees), but lower abundance ground (small herbs). forest plantation was associated an increase layer. tends dominate community invading treeless patches, correlation death Subsequently, promotes several changes culminate increment type. Different Acacia, Eucalyptus, main economic activity study affected both layers. conservation should include actions preclude change, monitoring control invasion.