About
- Sydney, New South Wales, Australia
The Blue Gum High Forest of the Sydney Basin Bioregion is one of six main indigenous forest communities of Sydney, Australia. It has been classified as critically endangered, under the New South Wales government's Threatened Species Conservation Act 1995. The principal canopy trees in this forest community are Sydney Blue Gum, Blackbutt and Sydney Red Gum which are usually seen between 20 and 40 metres tall. 180 species of indigenous plants have been identified at Dalrymple-Hay Nature Reserve.
The Blue Gum High Forest is restricted to the northern parts of Sydney, on soils based on shale with an annual rainfall over 1100 mm (43 in). Much of it grew on the ridge tops, roughly following the present day Pacific Highway from around Crows Nest up to Hornsby. Also it was recorded on soils based on the Mittagong Formation and exposed shale lenses within the Hawkesbury Sandstone. Remnants are found as far west as West Pennant Hills and Eastwood, though most of the few remaining areas are in suburbs such as Pymble, Turramurra and Wahroonga. Two of the larger forest remnants are Dalrymple-Hay Nature Reserve and Sheldon Forest. Around one percent of the original forest remains, and the current remnants amount to an area of 136 hectares (336 acres). Blue Gum High Forest grades into Turpentine-Ironbark Forest in drier areas of lower rainfall.
Ring-tail possums, Sugar Gliders, Brushtail possums and Grey-headed Flying Foxes are common. There are occasional sightings of wallabies. Birds include Rainbow Lorikeet (Trichoglossus moluccanus), Australian King Parrot (Alisterus scapularis), Crimson Rosella (Platycercus elegans), Currawongs, Variegated Fairywren (Malurus lamberti), Black-faced Cuckoo-shrike (Coracina novaehollandiae), Superb Fairywren (Malurus cyaneus), Powerful Owl (Ninox strenua) , Glossy Black Cockatoo (Calyptorhynchus lathami) and Silvereyes. The Yellow-bellied Sheathtail-bat (Saccolaimus flaviventris) is present though seldom seen.
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