Indigenous forests in New Zealand are nationally and internationally recognized as significant and highly valuable ecosystems. They are the country's most biologically diverse ecosystems, containing 70% of New Zealand's biomass and contributing to New Zealand's heritage and green image. They are valuable especially for their ecological uniqueness, with a very high level of endemism within their range of species. Much of these forests have been decimated over the last 200 years, and many of the species are threatened by extinction. Therefore, ecological and environmental principles such as maintaining the structure and composition of the forests as well as protecting its biodiversity need to be considered when managing the remaining indig...