The restoration of native vegetation to parts of the landscape where it has been lost or removed is a critical part of effectively conserving Australia's ecosystems and all their functions. The protection of existing healthy native vegetation and the enhancement of degraded remnant vegetation are the other two strategies available to achieve landscapes where all the plant and animal species that occur there can persist indefinitely.
These three actions are usually listed in a hierarchy:
Where resources for conservation are limited, they usually run out before restoration work can be carried out. Yet without restoration to increase the size and extent of native vegetation patches and to increase the connectivity of native vegetation, many species will continue to decline in numbers to the point of regional extinction. Therefore revegetation at large scales is critical to the effective conservation of regional biodiversity.