Ethnobotanical Knowledge Complexity in a Conservation Area of Northern Uruguay: Interlocutors-Medicinal Plant Network and the Structural Patterns of Interaction

With the aim of generating a strategy for biocultural conservation, we explore the structure and robustness of the botanical medical systems in the Biosphere Reserve “Bioma Pampa-Quebradas del Norte,” Uruguay, combining ethnobotanical hypotheses and network theory. We report a heterogeneous distribution of knowledge of medicinal plants with a potential limit to the individual knowledge (truncated–power-law). The robustness analysis in the face of alternative potential scenarios of system degradation indicates that the ethnobotanical system presents a high level of resistance to the loss of agents and medicinal plants species, but also a nonlinear response with a threshold of degradation after which an abrupt collapse in system structure is expected. To counter these threats at the Biosphere Reserve, we propose to promote ethnobotanical knowledge transmission and sustainable development in rural areas, and to encourage the development of strategies for the conservation of medicinal plants.