1. A protected area of land or water designated for the conservation of wildlife, plants, and natural ecosystems
The Pantanal is one of the world's largest nature reserves.
O Pantanal é uma das maiores reservas naturais do mundo.
2. An officially designated conservation area with legal protection and management regulations
Visitors must follow the rules established in the nature reserve.
Os visitantes devem seguir as regras estabelecidas na reserva natural.