New Zealand invests $202M to restore three islands with Māori help

New Zealand has announced a major investment of $202 million to restore three remote islands, working alongside the Māori people to eliminate invasive mammals and revive native ecosystems. The initiative targets Maukahuka/Auckland Island, Rakiura/Stewart Island and the Chatham archipelago, marking one of the largest ecological restoration efforts in the country’s history. The project involves collaboration between the government, local communities and indigenous groups, with the aim of creating predator-free zones to support native bird species, marine life and land-based organisms. The New Zealand Department of Conservation (DOC) confirmed that the initiative has already secured $54 million in government funding and requires further financial mobilisation to complete the ambitious plans. The restoration effort focuses on removing invasive species that have disrupted the delicate balance of these isolated ecosystems. On Rakiura, the project seeks to eliminate feral cats, rats, possums and hedgehogs, which have been responsible for the decline of native wildlife. These predators were introduced over time, altering the natural habitat and threatening species that once thrived in isolation. For instance, Maukahuka/Auckland Island, home to over 100 endemic species, faces threats from mice, pigs and feral cats. The Chatham archipelago, meanwhile, aims to reduce the impact of possums and feral cats in key areas, supporting the recovery of seabird populations. Historically, New Zealand’s islands developed in relative isolation, allowing native species to evolve without the presence of terrestrial mammalian predators. This led to the emergence of unique ecosystems where many birds nested on the ground, lacked flight capabilities or failed to develop effective escape mechanisms. However, the introduction of non-native species such as rats, mice, feral cats, pigs and possums has severely impacted these fragile habitats. As a result, many native species have declined or disappeared entirely, turning once-safe refuges into hostile environments. The project is designed to reverse this trend by restoring the natural equilibrium. Maukahuka/Auckland Island is envisioned as a site for the revival of subantarctic megaherb landscapes, while Rakiura is considered a potential sanctuary for the critically endangered kākāpō. The Chatham Islands are identified as crucial for the survival of seabirds, including the tāiko and various albatross species. The success of similar initiatives on smaller islands surrounding Rakiura has laid the groundwork for this expansion, demonstrating the feasibility of large-scale predator eradication. The involvement of Māori and Moriori leaders is central to the project’s design and execution. The DOC highlighted that Rakiura and Maukahuka fall within the traditional territories of Ngai Tahu, with the role of kaitiaki, guardians of the land, being integral to the restoration process. In the Chatham Islands, the Hokotehi Moriori Trust and Ngati Mutunga o Wharekauri are collaborating with local entities and the government to ensure cultural values and ecological goals align. This partnership reflects a broader shift towards integrating indigenous knowledge and stewardship into environmental management practices. The benefits of successful restoration extend beyond land-based ecosystems. Island Conservation noted that predator-free areas can see up to 50% greater fish biomass and exhibit significantly faster recovery rates following environmental stressors such as coral bleaching. Additionally, the return of seabirds contributes to nutrient cycling through their guano, enriching both terrestrial and marine environments. This interconnectedness underscores the importance of the project in fostering resilience across multiple ecological systems.