At Kooragang Wetlands pests include exotic weeds, feral animals and mosquitos.
Around 60 species of introduced plants can be found at Kooragang Wetlands, some have more devastating effects on native vegetation than others. Some like Kikuyu were deliberately brought in as pasture grass and now inhibit native seedlings from growing; some like Lantana was either dumped on site or brought in as seed by birds and makes the soil unsuitable for many native plants.
|Juncus acutus grows on the edges of estuarine (brackish) wetlands.||Juncus acutus has a large amount of seed.|
The main introduced plants we target at Kooragang Wetlands are:
- Juncus acutus
- Alligator weed
- Morning glory
- Balloon vine
- Moth vine
- African olive
- Camphor laurel
Feral animal management
The main introduced animals we manage are mostly foxes. There are a number of introduced animals at Kooragang Wetlands. Some have a greater effect than others. Some like foxes eats eggs, small animals and birds; other like rabbits and hares eat young seedlings.
Despite mosquitoes being a natural part of the environment with 23 species being native to the lower Hunter River estuary, there are two broad problems with local mosquitoes: their nuisance value and their potential to carry viral diseases such as Ross River Fever.
At Kooragang we are managing this problem by educating people to wear protective clothing, repellent and avoid visiting during peak mosquito infestations. We are also working to flush tidal areas adequately; minimize isolated (unconnected) low areas that receive only occasional flushing; and maximize habitat for mosquito predators such as fish and insectivorous bats.