Abstract
ABSTRACT Habitat loss and fragmentation are ecological impacts of development projects known to have severe effects on mammals’ populations. Here, we study the role of connectivity assessment in Environmental Impact Assessment, focusing on its contribution to determining appropriate mitigation, in particular, biodiversity offsetting. For that purpose, we analysed the dispersal of large mammals in a region potentially influenced by a mine located in the Atlantic rainforest in Brazil and anticipate the long-term outcomes of restoration offsets by modelling a 30-year post-offset scenario. Results show that: (i) offsets enhance ecological connectivity and are used as an alternative habitat for the animals dispersed due to habitat loss and fragmentation; (ii) the location of restoration areas should be carefully planned to maximize their contribution to increase ecological connectivity and enhance habitat quality. The reviewed case suggests that best practices to incorporate connectivity analysis in environmental impact assessment include: (i) monitoring biodiversity to quantify losses and gains; (ii) modelling offset areas alternatives for both protection and restoration; and (iii) conducting rigorous analysis of project alternatives, aiming at impact avoidance.
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