Biocultural Diversity at Risk Amidst and Beyond Overtourism: The Decline in Wild Green Foraging in Corfu over the Past 50 Years

This study focuses on the interplay between ecological, demographic, and developmental factors while examining the changes in wild greens (WGs) uses in Corfu from 1970 to 2024. A comparative analysis of historical and contemporary datasets reveals a decline in WG species from 58 (belonging to 47 genera and 18 families) in 1971 to 42 species (37 genera, 16 families) in 2024. The reduction in cropland and, therefore, the herbaceous vegetation has significantly contributed to this loss, alongside urbanisation, demographic shifts, and the rise of tourism-driven economies. Changes in climatic factors, like a 1.5 °C increase in temperature and reduced rainfall, further affect plant biodiversity. Shifts in the occupations of local populations (from farming to touristic services), the declining role of women-centred foraging, and the pervasive influence of formal botanical education may have altered the cultural landscape of WG use. This study underlines the urgent need to integrate traditional ecological knowledge into conservation strategies to mitigate biodiversity loss and sustain cultural heritage.