Cumberland Plain Woodland
The Cumberland Plain Woodland is one of six main indigenous woodland communities of Sydney, New South Wales, Australia, that comprises an open tree canopy, a groundcover with grasses and herbs, usually with layers of shrubs and/or small trees. Situated in the Cumberland Plain, it is made up of dry sclerophyll woodlands, grasslands and/or forests, reminiscent of Mediterranean forests and temperate grasslands. Currently, less than 6% of the Woodlands remain in small parts distributed across the western suburbs of Sydney, totaling only around 6400 hectares.
Cumberland Plain Woodland was listed as an Endangered Ecological Community under the Threatened Species Conservation Act 1995 in June 1997. The greatest threats to the Cumberland Plain Woodland include land clearing for agriculture, urban sprawl and the introduction of harmful weed species.
Geography
In 1877, Cumberland Plain Woodlands covered 107,000 hectares and filled around 30% of the Sydney Basin. At the time of European settlement, the Cumberland Plain contained 1,070 km² of woodlands and forests. The westward expansion of Sydney over the plain has placed enormous pressure on the woodlands and other local ecological communities, only 13% of which remain uncleared.Situated in the cities of Fairfield, Liverpool, Cumberland, Campbelltown, Blacktown and Penrith, and surrounds, they contain approximately 2000 ha of the remaining Cumberland Plain Woodland. The ecoregion contains clay soils derived from Wianamatta Shale. The ecoregion is located on a rain shadow area, usually getting 700–900 mm of annual rainfall, to the west of Sydney CBD. Its range does not extend to slightly wetter Sydney Turpentine-Ironbark Forest, or high-rainfall ridges.
The biotic community is mostly found on flat or hilly terrains up to about 350 m in elevation, but it may also be present on locally precipitous sites and at slightly higher elevations. Some parts of the community may have a forest structure. The Woodland features an open tree canopy, groundcover prevailed by grasses and herbs, sometimes with layers of shrubs and small trees.
Examples of the remnants can be seen at Scheyville National Park, Rosford Street Reserve, Brenan Park, Central Gardens Nature Reserve, Fairfield Park Precinct, Kemps Creek, Mulgoa, Prospect Hill in Pemulwuy, Prospect Nature Reserve, Wetherill Park Nature Reserve and Chipping Norton Lake, among other places.
Ecoregions
The Cumberland Plain Woodland, classed under Coastal Valley Grassy Woodlands, includes these ecoregions in its realm, with some overlapping and others plainly being sub-ecoregions of the Woodland:- Cumberland Moist Shale Woodlands – Located in protected areas, they have waxy-leaved shrubs and small trees in the understorey with a ground cover of herbs, fleshy twiners and grasses, which are usually absent in the surrounding grassy woodlands. Having hints, and being a component, of Western Sydney Dry Rainforest, some of its species would include hairy clerodendrum and slender grape. Although most of its habitat has been cleared for housing and urbanization, there are pockets of it in the southwest parts of the Fairfield City Council area and northwest of Liverpool near Green Valley and Cecil Hills.
- Cumberland Shale Hills Woodland – It's one of the widespread grassy woodland communities within Cumberland Plain Woodland and is restricted to mean annual rainfall of between 750 and 900 millimetres and elevations between 50 and 350 metres above sea level. An open woodland mainly containing grey box and forest red gum trees, it is mostly prevalent in Prospect near Prospect Reservoir, and also on the western edges of Fairfield City, Campbelltown LGA and Liverpool LGA.
- Cumberland Shale Plains Woodland – Featuring a soft topography, it is an open grassy woodland mainly containing grey boxes, forest red gums and ironbarks. Spotted gum may occur in the Fairfield LGA. It also contains a thin to reasonable cover of shrubs and a high cover of grasses and forbs. It is mostly spread in around Wetherill Park in Fairfield LGA, Prospect and Greystanes in Blacktown LGA, Cecils Hills and to the southwest as well, in Liverpool LGA.
- Western Sydney dry rainforest – Predominantly cleared within the Cumberland Plain and a component of Moist Shale Woodlands, it occurs on the secured clay-rich soils of the wavy hills and ranges of western Sydney in around Abbotsbury near Calmsley Hill City Farm, albeit in a very small isolated pocket. Grey myrtle is the most prevalent species with a ground cover being sparsely made up of herbs and ferns. Other salient species include fig, wild quince and whalebone tree. The rainforest canopy may include spotted gums, wattles and paperbarks. Shrubs such as hairy clerodendrum and large mock olive are also present. Rainfall is usually below 900 millimeters per annum in the rainforests within Cumberland Plain.
- Cumberland Shale-Sandstone Ironbark Forest – Found on the peripheries of the Cumberland Plain, it is one of a series of woodlands that are associated with the impalpable transition between clay-rich shale soil and the coarse sandy substrates of the sandstone plateau. It is present on the western bounds of the Woronora Plateau and above the Nepean and Georges rivers between Appin and the Holsworthy defence area. It is a modestly tall eucalyptus forest with a mixed understorey of sclerophyll shrubs and grasses with some sparse blanket of tall casuarinas. Its ground cover contains varies species of shrubs that are common on shale substrates such as blackthorn and those linked with sandstone soils such as geebungs.
- Shale/Sandstone Transition Forest – Found in Ingleburn to the west of the Woronora Plateau in south-western Sydney, at the edges of the Cumberland Plain, in an area with relatively low rainfall, it is a moderately tall eucalyptus forest that's linked with the subtle transition between clay-rich shale soil and the rough sandy matter of the sandstone plateau.
- Shale gravel transition forest – Low in fertility and contains shale-influenced sandy soils that support a constituents of ironstone gravels, it is a forest with an understorey that may deviate between dense shrubs and a low thin shrub with an abundant ground cover of grasses. It is mostly found in Prospect, Marsden Park, Holsworthy and near Bankstown.
Vegetation
Cumberland Plain Woodland are dominated by Grey Box and Forest Red Gum, with Narrow-leaved Ironbark, Spotted Gum and Thin-leaved Stringybark occurring sporadically. The ecoregion may have an open layer of small trees that would include such species of Acacia decurrens, Acacia parramattensis, Acacia implexa and Exocarpos cupressiformis. The shrub layer is mainly contains Bursaria spinosa, indigofera australis, Hardenbergia violacea, Daviesia ulicifolia, Lespedeza cuneata, Dillwynia, Dodonaea viscosa, with plenty grasses such as Kangaroo Grass and Weeping Meadow Grass.
Other eucalyptus species within the Woodland include:
- Eucalyptus amplifolia
- Eucalyptus sieberi
- Eucalyptus oblonga
- Eucalyptus capitellata
- Corymbia gummifera
- Eucalyptus racemosa
- Eucalyptus baueriana
- Eucalyptus longifolia
- Eucalyptus paniculata
- Eucalyptus punctata
- Eucalyptus melliodora
- Melaleuca alternifolia
- Melaleuca decora
- Melaleuca styphelioides
- Alectryon subcinereus
- Allocasuarina torulosa
- Tristaniopsis laurina
- Melia azedarach
- Backhousia myrtifolia
- Notelaea longifolia
- Casuarina cunninghamiana
- Syncarpia glomulifera
- Clerodendrum tomentosum
- Bursaria spinosa
- Melicytus dentatus
- Acacia floribunda
- Angophora bakeri
- Angophora subvelutina
- Pittosporum revolutum
- Solanum prinophyllum
- Breynia oblongifolia
- Dichondra repens
- Ajuga australis
- Daucus glochidiatus
- Centella asiatica
- Solanum cinereum
- Crassula sieberiana
- Aphanopetalum resinosum
- Pandorea pandorana
- Cayratia clematidea
- Cheilanthes distans
- Chrysocephalum apiculatum
- Pratia purpurascens
- Arthropodium milleflorum
- Chenopodium hastatum
- Schenkia spicata
- Veronica plebeia
- Stackhousia viminea
- Cestrum nocturnum
- Rubus parvifolius
- Ozothamnus diosmifolius
- Glycine tabacina
- Cyperus gracilis
- Oplismenus hirtellus
- Bothriochloa macra
- Fimbristylis dichotoma
- Panicum effusum
- Sorghum leiocladum
- Chloris truncata''
Wildlife
bird species that migrates to the woodland.
- Gang Gang Cockatoo
- Glossy Black-cockatoo
- Brown Treecreeper
- Painted Honeyeater
- Swift Parrot
- Square-tailed Kite
- Hooded Robin
- Black-chinned Honeyeater
- Turquoise Parrot
- Barking Owl
- Powerful Owl
- Speckled Warbler
- Diamond Firetail
- Masked Owl
- Sooty Owl
- Regent Honeyeater
- Large-eared Pied Bat
- Spotted-tail Quoll
- Eastern False Pipistrelle
- Eastern Bent-wing Bat
- Eastern Freetail Bat
- Large-footed Myotis
- Yellow-bellied Glider
- Squirrel Glider
- Koala
- Yellow-bellied sheath-tailed bat
- Greater Broad-nosed Bat