Urban rewilding to combat global biodiversity decline.

Rapid urbanization is contributing to unprecedented biodiversity decline worldwide. Despite biodiversity loss being more pronounced in cities, traditional conservation efforts such as establishing large, protected areas and restoring native vegetation are largely undertaken far from urban landscapes. More proactive approaches, such as rewilding, have garnered momentum as a conservation process but remain underused in cities. In the present article, focusing on active faunal reintroductions, we explore urban rewilding as a process to restore ecological functions and enhance ecosystem resilience. Through a systematic literature review, we assess the varied aims, challenges, and definitions of success in rewilding efforts in urban contexts. Moreover, we define the unique opportunities and benefits urban rewilding presents for reconnecting people with nature, fostering community engagement, and enhancing cultural connections. Finally, we identify future research areas, including the need for long-term studies on ecological impacts, developing species selection frameworks, and exploring sociocultural dimensions of urban rewilding.