These waterways and wetlands are listed as Wetlands of International Importance under the Ramsar Convention for their migratory shorebirds like the Eastern curlew, and as a home to threatened species and threatened ecological communities.
Eastern curlew migrate annually between Australia, China and Russia. They require undisturbed feeding and roosting sites so they can build up enough bodily reserves to survive their long migration flights. The eastern curlew is one of the flightiest species of birds. A curlew can be spooked by a person from as far as 250 metres away, making them highly susceptible to disturbance.
Key threats to these wetlands and their ecosystems include changes to tidal range and freshwater/saltwater balance, habitat loss and fragmentation, introduced predators, weeds, pollution, and industry, urban and human disturbances.