In 2016, Alessandra played a decisive role in suspending the planned Tapajós River hydroelectric dam complex, through an international mobilization targeting major companies involved in its implementation. She is also a central figure in the self-demarcation of the Sawré Muybu territory, the ancestral heartland of the Munduruku people, and she leads firm opposition to carbon-offset projects, which she considers a new form of ecological colonization.

In 2020, she received the Robert F. Kennedy Human Rights Award for her defense of Indigenous rights and the environment. In 2023, she was honored with the prestigious Goldman Environmental Prize, recognizing her exemplary work. Despite repeated death threats and a home invasion in 2019, she continues to denounce illegal mining, gold prospecting, and violations of her people’s rights.

Alessandra Korap Munduruku has collaborated on several occasions with Planète Amazone. She was invited to Paris for a counter-summit during the World Hydropower Congress in 2019, and took part in COP26 in Glasgow in 2021. She also appears in the documentary series Protégeons l’Amazonie and in the film Amazonia, the Heart of Mother Earth, where she embodies the voice of Indigenous Peoples fighting for the recognition of their rights and the preservation of their sacred territories.