NSW Central Murray Forests

These wetlands in south-western New South Wales were listed under the Ramsar Convention in 2003.

Aerial view of marshlandThe NSW Central Murray Forests Ramsar site is near Deniliquin in south-western New South Wales.

It covers 83,992 hectares and consists of three subsites: Millewa Forests, Werai Forests and Koondrook Forests. All three depend on flows in the Murray River.

Why these wetlands were listed as a Ramsar site

Countries that sign up to the Ramsar Convention can nominate sites to be listed as Wetlands of International Importance (Ramsar sites). The site must meet at least 1 of 9 internationally accepted criteria.

NSW Central Murray Forests were listed as a Ramsar site in 2003 because they meet the following criteria:

Criterion 1: Representative or unique wetlands

Millewa Forests, together with Barmah Forest in Victoria, are Australia’s largest area of river red gum forest. They have trees more than 200 years old and areas that are structurally equivalent to undisturbed forest.

This is despite the fact that parts of the forests have been harvested for timber for 150 years.

The Ramsar site also has other wetland types such as floodplain lakes, moira grass plains, meadows and reed swamps.

Criterion 2: Threatened species or ecological communities

Superb parrot (Polytelis swainsonii)The Ramsar site supports eight nationally or internationally listed threatened species.

These includes:

Criterion 4: Supports species at a critical stage of their life cycle or provides refuge in adverse conditions

The Ramsar site provides habitat for 11 species of migratory birds listed under international agreements. It supports breeding of thousands of colonial nesting waterbirds during times of inundation.

It is also important for breeding of native fish and ducks.

The permanent rivers and wetlands within the site are recognised as drought refuge for native fauna in this semi-arid region.

Criterion 8: Food source, nursery or migration path for fish

The Ramsar site provides migratory routes between habitats in the Murray River, its anabranches (sections that branch off from the river and later rejoin it) and floodplains.

Native fish move into off-stream areas on rising flows and seek refuge in deeper waters during low flow periods. Many species spawn on the floodplains.

How the site is managed

Management of this Ramsar site is guided by the following:

In addition, the Werai Forests were vested in the Minister for the Environment on 1 July 2010 and will be transferred to traditional owners for conservation purposes.

Threats to the Ramsar site

The main threats to this site’s ecological character include:

  • altered water regimes
  • altered fire regimes
  • introduced species, particularly European carp which competes with native fish
  • climate change.

Changes in the water regimes have caused a reduction in the frequency and length of spring wetland inundation in all three forests and an alteration to the seasonality of inundation in Millewa Forests.

The Office of Environment and Heritage is working with the Commonwealth to improve the water regimes in these forests.