Gippsland Lakes (25110)
Australia, Australasia
Site overview
KBA status: confirmed
Global KBA criteria: A1b, D1a
Year of last assessment: 2009
National site name: Gippsland Lakes
Central coordinates: Latitude: -38.0158, Longitude: 147.5490
System: marine, terrestrial
Elevation (m): 0 to 30
Area of KBA (km2): 598.99358
Protected area coverage (%): 97.96
KBA classification: Global
Legacy site: Yes
Site details
Site description: The Gippsland Lakes IBA is identical to the Ramsar site of the same name and includes many Gippsland Lakes Reserves and also Heritage Rivers as well as listed protected areas in coastal east Victoria. It is delineated as the contiguous reserve land and open water of the natural wetlands situated just inside the coast of East Gippsland from Seaspray to Lake Tyers. The lakes are a group of coastal lagoons separated from the sea by a broad sandy barrier known as Ninety Mile Beach. The main lakes, Wellington, Victoria and King, cover an area of 340 km² and have a shoreline of 320 km. The lakes are fed by a number of river systems. The largest of the rivers are the LaTrobe River and the Avon River (flowing into Lake Wellington), and the Mitchell River, Nicholson River and Tambo River (flowing into Lake King). The system is linked to the sea by an artificial entrance near the eastern end, opened in 1889, where the town of Lakes Entrance is now situated. Before 1889 the entrance moved during floods or storms and became restricted during periods of low river flow. The artificial entrance both lowered and reduced annual variation in lake levels and salinity. Today, the larger wetlands are saline but surrounded by a complex of other smaller wetlands ranging from hypersaline to freshwater. In periodically inundated low lying areas, the vegetation is wet scrub dominated by Swamp Paperbark, and fringed on the lake side by reed and reed mace. In some of the swamps around the lakes the swamp scrub is dying back and is being replaced by salt marsh, due largely to increased salinity. The key freshwater areas supporting breeding birds are MacLeod, Heart and Dowd's Morasses. Parts of the Lakes system are heavily used for commercial and recreational fisheries and for other water-based recreation (with old figures stating that 250,000 anglers each year take over 1.5 million fish, mostly Black Bream, weighing around 400 tonnes, from the Lakes system). The wider landscape is only 50% pastoral, 40% reserved, 5% residential and 5% mining. The neighbouring Jack Smith Lake and Lake Denison are not included in the IBA but have occasionally supported large numbers of Red-necked Avocets.
Rationale for qualifying as KBA: This site qualifies as a Key Biodiversity Area of international significance that meets the thresholds for at least one criterion described in the Global Standard for the Identification of KBAs.
Additional biodiversity: The Gippsland Lakes regularly support 20,000 or more waterbirds; species recorded in notable but sub-threshold numbers are Grey Teal (7,270 at Lake King, Lake Victoria and Lake Wellington), Australasian Grebe (4,500 at Lake King), Eurasian Coot (10,000 at Lake King, 1,000 at Lake Victoria and 2,000 at Lake Wellington) and Great Cormorant (7,000 at Lake Victoria, 440 at Lake Wellington) (DEWHA 2008). About four to eight pairs of the near threatened Hooded Plover occur, including two pairs on the Bunga Arm of the Coastal Reserves. The endangered Australasian Bittern is probably now extirpated from the Gippsland Lakes due to massive decline of fringing reedbeds. Other waterbirds still occurring in locally significant numbers include Blue-billed Duck (very small numbers on freshwater inland wetlands, mostly confined to Macleods Morass), Australian Pelican (locally significant breeding resident), Australian White Ibis (locally significant breeding resident), Caspian Tern (locally significant breeding resident), Dusky Moorhen (outside urban ponds, a very rare species in the region that has declined almost completely), Eurasian Coot (locally significant breeding resident, has declined by 60-75%), Great Crested Grebe (appears to have declined by more than 80%), Great Egret (appears to have declined by 50%), Hoary-headed Grebe (appears to have declined by 65%), Royal Spoonbill (locally significant breeding resident), Straw-necked Ibis (locally significant breeding resident), White-bellied Sea-Eagle (locally significant breeding resident with approximately 25 pairs, perhaps 25% of the Victorian population) and Yellow-billed Spoonbill (locally significant breeding resident). Striated Fieldwrens are frequently recorded in intervening vegetation (Atlas of Australian Birds database). Non-bird biodiversity: Other species of fauna recorded in the Gippsland Lakes region include Swamp Skink, Green and Golden Bell Frog, Growling Grass Frog (the site may be an important hybrid-zone for these species) and Bottlenose Dolphin.
Other site values: Victorian State Government with management responsibilities shared by East Gippsland Shire Council, West Gippsland Shire Council, Department of Sustainability and Environment, Parks Victoria, Department of Primary Industries (mostly fisheries), Southern Rural Water, East Gippsland Water, West Gippsland Water, East Gippsland Catchment Management Authority, West Gippsland Catchment Management Authority, Environment Protection Authority, Gippsland Coastal Board, Gippsland. Ports. Public access is permitted to lakes and morasses.
Habitats
Land use: fisheries/aquaculture | nature conservation and research | tourism/recreation
| IUCN Habitat | Coverage % | Habitat detail |
|---|---|---|
| Shrubland | 3 | |
| Forest | 5 | |
| Marine Coastal/Supratidal | 86 |
Threats
Summary of threats to biodiversity at KBA: Freshwater inflow allocations needed for key breeding locations to stabilise bird populations that are declining due to increasing salinity. Other more localised management action is needed to address habitat quality, such as the decline in the extent of reedbeds and Melaleuca scrub.
| Threat level 1 | Threat level 2 | Threat level 3 | Timing |
|---|---|---|---|
| Pollution | Agricultural & forestry effluents | Nutrient loads | Ongoing |
| Biological resource use | Hunting & collecting terrestrial animals | Intentional use (species being assessed is the target) | Ongoing |
| Biological resource use | Fishing & harvesting aquatic resources | Intentional use: subsistence/small scale (species being assessed is the target) [harvest] | Ongoing |
| Human intrusions & disturbance | Recreational activities | Ongoing | |
| Transportation & service corridors | Utility & service lines | Ongoing |
Additional information
References: DEWHA (2008) A Directory of Important Wetlands in Australia. Gippsland Lakes Ramsar Information Sheet. http://www.environment.gov.au/water/publications/environmental/wetlands/database/ accessed June 2008. DSE (2003) Gippsland Lakes Ramsar Site Strategic Management Plan. Department of Sustainability and Environment, Melbourne. East Gippsland BOCA bird sightings database 2008.
Contributors: Simon Mustoe wrote the report. Data are based largely on sightings made and collated by the East Gippsland Bird Observers Club (EGBOCA).