Exotic and native medicinal plants used by Quilombola Communities in the Atlantic Forest: Popularity, versatility and exclusivity as proxies for cultural keystone species

Flavia Santoro; Jhonnatas Gomes  Paiva; Luíza Gomes  Honorato; Mara Lúcia Hora; Mayra da Cruz Nascimento; Marcelo Trindade Nascimento

doi:10.15451/ec2025-09-14.32-1-12

Autores/as

Flavia Santoro
Jhonnatas Gomes Paiva
Luíza Gomes Honorato Associação dos Pequenos Produtores Rurais e Quilombolas de Aleluia, Batatal e Cambucá
Mara Lúcia Hora Herbarium of the Centro de Biociências e Biotecnologia (HUENF), Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Campos dos Goytacazes, RJ, Brazil
Mayra da Cruz Nascimento
Marcelo Trindade Nascimento Herbarium of the Centro de Biociências e Biotecnologia (HUENF), Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Campos dos Goytacazes, RJ, Brazil

DOI:

https://doi.org/10.15451/ec2025-09-14.32-1-12

Palabras clave:

Utilitarian redundancy; Indigenous Peoples and Local Communities; Conservation efforts.

Resumen

Native species used in the traditional medicine of Indigenous Peoples and Local Communities undeniably require conservation efforts. Some theoretical models suggest that exotic species may reduce the pressure on native species by sharing their functions and increasing redundancy within medicinal plant use. As a result, native species would no longer be exclusive. Exclusivity in use, along with versatility and popularity, are indicators of more frequent use, potentially leading to overexploitation. These characteristics are also used to define cultural keystone species. Our study investigated these three attributes in medicinal plants used by three afro-descendants quilombola communities within the Atlantic Forest to identify the role of exotic species in reducing the pressure on native species and to determine possible cultural keystone species in the local medical system. We conducted semi-structured interviews with local specialists and guided tours for data collection. We found no significant differences between exotic and native species in the tested attributes, suggesting that species from both origins share similar use pressures. However, when setting a threshold for the most critical attributes, we observed that, in the resulting list, most species appearing in at least two attribute lists are native. We highlight the need for conservation actions for the species present in all three lists compiled in this study and propose that these attributes be incorporated into the classification of species that form the structural core of a local medical system.

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