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- Namoi subregion
- Context statement for the Namoi subregion
- Ecology
- Terrestrial species and communities
The Namoi river basin supports a diversity of landscapes including the Liverpool and Kaputar ranges, the rolling hills of the sedimentary slopes, and the floodplains of the Liverpool Plains and Darling Riverine plains in the west of the river basin (Green et al., 2011). Vegetation in the upper Namoi includes open box woodlands on the slopes and temperate and sub-alpine forests in the ranges. The Liverpool Plains contain endangered native grasslands, and the riparian vegetation is dominated by river oaks and willows with river red gum communities along the major streams (Green et al., 2011). Ninety-seven regional vegetation communities were recognised to occur within the Namoi (Namoi CMA, 2011), However recent updates of this earlier mapping have revised this to 70 regional vegetation communities that were existed prioir to European colonisation and 3 derived regional vegetation communities (EcoLogical Australia 2013). Over 3200 km2 of native woodlands and forests are protected within national parks and nature reserves. East of Tamworth the Warrabah National Park approximates 40 km2 of habitat along the Namoi River. East of Narrabri the Kaputar National Park protects rainforest patches, semi-arid to sub-alpine woodlands and forests and heathlands on the high plateaus and peaks. The Pilliga Nature Reserve in the upper catchment of Bohena Creek is the largest reserve in the river basin protecting extensive areas of Pilliga scrub containing iron box woodlands and small areas of river red gum, yellow box, white box and angophora. White and black cypress are commonly associated with the iron bark. The Pilliga scrub is the largest remaining area of dry sclerophyll forest west of the Great Dividing Range in New South Wales and its size and connection to adjacent forest habitat makes it an important habitat for a range of threatened species including the endemic Pilliga mouse (Green et al., 2011).
Species/communities of national significance
Table 15 presents species or communities that occur in the Namoi river basin and are listed under the EPBC Act.
Table 15 Nationally listed biodiversity assets of the Namoi river basin
Asset |
Theme |
EPBC Act listing |
Presence |
---|---|---|---|
Birds |
|||
Great egret (Egretta alba) |
Biodiversity |
Migratory |
Known |
Glossy ibis (Plegadis falcinellus) |
Biodiversity |
Migratory |
Known |
Latham's snipe (Gallinago hardwickii) |
Biodiversity |
Migratory |
Known |
Marsh sandpiper (Tringa stagnatilis) |
Biodiversity |
Migratory |
Known |
Common greenshank (Tringa nebularia) |
Biodiversity |
Migratory |
Known |
Sharp-tailed sandpiper (Calidris acuminate) |
Biodiversity |
Migratory |
Known |
Caspian tern (Hydroprogne caspia or Sterna caspia) |
Biodiversity |
Migratory |
Known |
White-throated needletail (Chaetura caudacuta or Hirundapus caudacutus) |
Biodiversity |
Migratory |
Known |
Clamorous reed-warbler (Acrocephalus stentoreus) |
Biodiversity |
Migratory |
Known |
Superb parrot (Polytelis swainsonii) |
Biodiversity |
Vulnerable |
Known |
Aquatic species |
|||
Murray cod |
Biodiversity |
Vulnerable |
Known |
Non Aquatic species |
|||
Booroolong frog (Litoria booroolongensis) |
Biodiversity |
Endangered |
Known |
Bell’s turtle (Elseya belli) |
Biodiversity |
Vulnerable |
Known |
Five-clawed worm-skink |
Biodiversity |
Vulnerable |
Known |
Ecological communities |
|||
Coolibah-Black box woodlands |
Biodiversity/Land |
Endangered |
Known |
Source data: Thurtell and Wettin (2012)
Species/communities of regional significance
Table 16 presents species or communities that occur in the Namoi river basin and are listed as threatened species by the NSW Office of Environment and Heritage (2012).
Table 16 Species and communities of the Namoi river basin listed as threatened in New South Wales
Asset |
Theme |
NSW Status |
Presence |
||
---|---|---|---|---|---|
Birds |
|||||
Superb parrot (Polytelis swainsonii) |
Biodiversity |
Threatened |
Known |
||
Australasian bittern (Botaurus poiciloptilus) |
Biodiversity |
Vulnerable |
Known |
||
Barking owl (Ninox connivens) |
Biodiversity |
Vulnerable |
Known |
||
Black-breasted buzzard (Hamirostra melanosternon) |
Biodiversity |
Vulnerable |
Known |
||
Black-necked stork (Ephippiorhynchus asiaticus) |
Biodiversity |
Endangered |
Known |
||
Black-tailed godwit (Limosa limosa) |
Biodiversity |
Vulnerable |
Known |
||
Blue-billed duck (Oxyura australis) |
Biodiversity |
Vulnerable |
Known |
||
Brolga (Grus rubicund) |
Biodiversity |
Vulnerable |
Known |
||
Diamond firetail (Stagonopleura guttata) |
Biodiversity |
Vulnerable |
Known |
||
Freckled duck (Stictonetta naevosa) |
Biodiversity |
Vulnerable |
Known |
||
Gilbert's whistler (Pachycephala inornata) |
Biodiversity |
Vulnerable |
Known |
||
Magpie goose (Anseranas semipalmata) |
Biodiversity |
Vulnerable |
Known |
||
Painted snipe (Rostratula benghalensis) |
Biodiversity |
Endangered |
Known |
||
Red goshawk (Erythrotriorchis radiates) |
Biodiversity |
Critically endangered |
Known |
||
Regent honeyeater (Xanthomyza Phrygia) |
Biodiversity |
Endangered |
Known |
||
Grey falcon (Falco hypoleucos) |
Biodiversity |
Vulnerable |
Known |
||
Square-tailed kite (Lophoictinia isura) |
Biodiversity |
Vulnerable |
Known |
||
Turquoise parrot (Neophema pulchella) |
Biodiversity |
Vulnerable |
Known |
||
Aquatic species |
|||||
River snail (Notopala sublineata) |
Biodiversity |
Endangered |
Known |
||
Purple spotted gudgeon (Mogurnda adspersa) |
Biodiversity |
Endangered |
Known |
||
Silver perch (Bidyanus bidyanus) |
Biodiversity |
Vulnerable |
Known |
||
Olive perchlet (Ambassis agassizii) |
Biodiversity |
Endangered |
Known |
||
Freshwater catfish (Tandanus tandanus) |
Biodiversity |
Endangered |
Known |
||
Non aquatic species |
|||||
Brush-tailed phascogale (Phascogale tapoatafa) |
Biodiversity |
Vulnerable |
Predicted |
||
Davies’ tree frog (Litoria daviesae) |
Biodiversity |
Vulnerable |
Known |
||
Glandular frog (Litoria subglandulosa) |
Biodiversity |
Vulnerable |
Known |
||
Greater broad-nosed bat (Scoteanax rueppellii) |
Biodiversity |
Vulnerable |
Known |
||
Pale-headed snake (Hoplocephalus bitorquatus) |
Biodiversity |
Vulnerable |
Known |
||
Sloane’s froglet (Crinia sloanei) |
Biodiversity |
Vulnerable |
Known |
||
Squirrel glider (Petaurus norfolcensis) |
Biodiversity |
Vulnerable |
Known |
||
Stripe-faced dunnart (Sminthopsis macroura) |
Biodiversity |
Vulnerable |
Known |
||
Ecological communities |
|||||
Aquatic ecological community in the natural drainage system of the lowland catchment of the Darling River |
Biodiversity/Water |
Endangered ecological community |
Known |
||
Brigalow within the Brigalow Belt South, Nandewar and Darling Riverine Plains Bioregions |
Biodiversity/Land |
Endangered ecological community |
Known |
||
Cadellia pentastylis (Ooline) community in the Nandewar and Brigalow Belt South Bioregion |
Biodiversity/Land |
Endangered ecological community |
Known |
||
Carbeen Open Forest Community in the Darling Riverine Plains and Brigalow Belt South Bioregions |
Biodiversity/Land |
Endangered ecological community |
Known |
||
Carex Sedgeland of the New England Tableland, Nandewar, Brigalow Belt South and NSW North Coast Bioregion |
Biodiversity/Land |
Endangered ecological community |
Known |
||
Fuzzy Box Woodland on alluvial soils of the South Western Slopes, Darling Riverine Plains and Brigalow Belt South Bioregions |
Biodiversity/Land |
Endangered ecological community |
Known |
||
Howell Shrublands in the New England Tableland and Nandewar Bioregions |
Biodiversity/Land |
Endangered ecological community |
Known |
||
Inland Grey Box Woodland in the Riverina, NSW South Western Slopes, Cobar Peneplain, Nandewar and Brigalow Belt South Bioregions |
Biodiversity/Land |
Endangered ecological community |
Known |
||
McKies Stringybark/Blackbutt Open Forest in the Nandewar and New England Tableland Bioregions |
Biodiversity/Land |
Endangered ecological community |
Known |
||
Myall Woodland in the Darling Riverine Plains, Brigalow Belt South, Cobar Peneplain, Murray-Darling Depression, Riverina and NSW South Western |
Biodiversity/Land |
Endangered ecological community |
Known |
||
Native Vegetation on cracking clay soils of the Liverpool Plains |
Biodiversity/Land |
Endangered ecological community |
Known |
||
New England Peppermint (Eucalyptus nova-anglica) Woodland on basalts and sediments in the New England Tableland Bioregion |
Biodiversity/Land |
Endangered ecological community |
Known |
||
Ribbon Gum-Mountain Gum-Snow Gum Grassy Forest/Woodland of the New England Tableland Bioregion |
Biodiversity/Land |
Endangered ecological community |
Known |
||
Semi-evergreen Vine Thicket in the Brigalow Belt South and Nandewar Bioregions |
Biodiversity/Land |
Endangered ecological community |
Known |
||
White Box Yellow Box Blakely’s Red Gum Woodland |
Biodiversity/Land |
Endangered ecological community |
Known |
||
Source data: Thurtell and Wettin (2012)
