Spatial Sensitivity Assessment of Biodiversity and Speleological Heritage to Mining
The Biodiversity Sensitivity Map provides a spatial representation of the varying degrees of vulnerability of conservation targets to mining-related impacts. It integrates biological and ecological characteristics of species and ecosystems, along with the influence of anthropogenic pressures, to create a comprehensive sensitivity gradient—referred to as the Biodiversity Sensitivity Index.
This index ranks the entire study area into four sensitivity classes, ranging from “Extremely Sensitive Areas” to “Less Concerning Areas”, with each category representing approximately 25% of the total area. The classification follows principles of systematic conservation planning, incorporating spatial representations of both the distribution and sensitivity of each conservation target.
Certain species, habitats, or ecosystem services are more vulnerable due to intrinsic biological or ecological traits, or due to their geographic location. Moreover, the model considers landscape-level attributes—such as environmental conditions that either support or hinder biodiversity persistence—that are not directly tied to the mining threat but are critical for understanding overall ecological resilience.
Importantly, only targets that are likely to become even more vulnerable in the absence of preventive or mitigation measures were included in the mapping, ensuring that the tool supports strategic planning and prioritization for conservation in the context of mineral exploration.
Key enabling factors for the development of the biodiversity sensitivity map included access to specialized knowledge through collaboration with the National Centers for Research and Conservation of Fauna (ICMBio), and utilization of the Biodiversity Extinction Risk Assessment System (SALVE) (https://salve.icmbio.gov.br), which contains occurrence records validated by taxonomic experts. Additionally, coordination with the National Center for Flora Conservation (CNCFlora) (http://cncflora.jbrj.gov.br/portal) was essential for the identification of priority conservation targets for flora.
The construction of the tool contributed to the improvement of participatory methods, considering that the involvement of different actors in the discussion and elaboration of PRIM Mining is crucial to guarantee transparency in the processes of defining targets and analysis parameters, increasing the reliability, robustness and scope of the results.