The importance of the continuity of practice: Ethnobotany of Kihnu island (Estonia) from 1937 to 2021

Local knowledge is highly endangered in the modern world, and therefore, it is important to understand the factors contributing to the preservation of biocultural diversity. Three major aspects were identified: continuity of the practice, support for the ritual related to the use, and external acknowledgment of the local use by an authoritative source. Moreover, strong centralization of current local knowledge in institutionalized domains (ethnomedicine) was identified, which has excluded unacknowledged or officially unapproved local knowledge from circulation. The inclusion of local ecological knowledge as a practice in school curricula and the highlighting of local historical uses in herbals and popularizing activities are recommended.