Since the European invasion, at least 10 species of mammal, 3 reptile species, 4 birds species and probably 198 plant species have disappeared from what is now Woodlands Historic Park. The creek has been highly eroded, the soils compacted, and most of the diverse grassy ground cover replaced by Chilean Needle Grass and broad-leafed weeds. Water flows have been changed by dams and drains. The park is criss-crossed by pipelines and vehicle tracks (map), and even some of the granite boulders have been broken up.
As degraded as the park is, it can get worse. There are threats to the plant and animal populations of the park, to its recreational value, and to its soil. Some possible threats, in no particular order, are:
- Environmental Weeds, meaning any plant which did not occur in the park before European settlement.
- Alien animals, including rabbits, foxes, cats, dogs, birds, European honey bees and Red-legged Earth Mites.
- Urban development.
- Illegal acts.
- Soil compaction by vehicles.
- Sound and light pollution.
- Derelict or missing fences allowing horse access to native grasslands.
- Wildlife which may become over-abundant, including Kangaroos and Brush-tail Possums.
- Excessively dense regrowth of native trees or shrubs (such as Hedge Wattle), resulting in other plants being shaded out.
- Lack of fire.
- Fire prevention works.
- Climate Change.
The ability of Parks Victoria to combat any of these threats is severely restricted by its limited funding.