The Brook Waimarama Sanctuary is a 715 hectare mainland “ecological island” sanctuary located in Nelson, New Zealand. The Brook Waimarama Sanctuary Trust was established in 2004 with the intent of restoring the local populations of pre-European flora and fauna which have been ravaged by introduced mammalian predators. Invasion by introduced weeds also poses a threat. The sanctuary may also be used in the future as a site where endangered species such as the South Island kākā may be protected. The sanctuary is open to the public and encourages visitors.
From inception a predator-proof fence had been planned with the intent of allowing complete eradication of the predator population (mammals) and the prevention of re-invasion. This predator-proof fence was completed in September 2016. A trapping programme began in a small area in 2006 aimed at controlling possum, rat, mice, stoat and weasel populations, and has since extended to cover an area of approximately 300 hectares.