Table: Species at risk in each subregion: their threatening processes.
| Species name |
Threatening processes |
Threatening processes notes |
| GAW1 |
| Acanthiza iredalei iredalei (Slender-billed Thornbill (western)) |
Broad scale vegetation clearing |
No data |
| Acanthiza iredalei iredalei (Slender-billed Thornbill (western)) |
Changed fire regimes |
Long periods between fires creates older woody shrub and tree areas which are less favourable to good populations of the thornbill. |
| Acanthiza iredalei iredalei (Slender-billed Thornbill (western)) |
Feral animals |
Predation by fox and cat. |
| Acanthiza iredalei iredalei (Slender-billed Thornbill (western)) |
Increasing fragmentation and loss of remnants |
As the species is sedentary isolation in remnant native vegetation islands threatens the species especially if fire destroys a localised population. |
| Amytornis striatus (Striated Grasswren) |
Changed fire regimes |
May destroy hummock grassland over large areas and cause local extinction |
| Amytornis striatus (Striated Grasswren) |
Feral animals |
Possible predation by foxes and feral cats |
| Amytornis striatus (Striated Grasswren) |
Grazing pressure |
Degrades habitat |
| Amytornis textilis myall (Thick-billed Grasswren (Gawler Ranges)) |
Firewood collection |
Intense overgrazing could affect the taxon |
| Brachyscome muelleri |
Other - describe |
Small size of population and reliance on favourable seasonal climatic conditions |
| Cacatua leadbeateri (Major Mitchell's Cockatoo) |
Broad scale vegetation clearing |
Clearance of feeding and breeding habitat. |
| Cacatua leadbeateri (Major Mitchell's Cockatoo) |
Exotic weeds |
As above. |
| Cacatua leadbeateri (Major Mitchell's Cockatoo) |
Grazing pressure |
Impeding the recruitment of trees that will be used for breeding in the future. |
| Cacatua leadbeateri (Major Mitchell's Cockatoo) |
Other - describe |
Nest robbing and trapping for aviculture. |
| Halosarcia flabelliformis (Bead Glasswort) |
Changed hydrology - other |
Altered hydrology could lead to excessive and prolonged flooding |
| Halosarcia flabelliformis (Bead Glasswort) |
Changed hydrology - salinity |
Altered hydrology could lead to excessive salinity and intolerable conditions. |
| Halosarcia flabelliformis (Bead Glasswort) |
Exotic weeds |
Competition with and displacement by exotic weeds |
| Halosarcia flabelliformis (Bead Glasswort) |
Feral animals |
Rabbits graze the species and facilitate the spread of weeds. |
| Halosarcia flabelliformis (Bead Glasswort) |
Grazing pressure |
Sheep graze along the margins of salt lakes and facilitate the introduction of exotic weeds. |
| Halosarcia flabelliformis (Bead Glasswort) |
Other - describe |
Mining for salt and gypsum
Rubbish dumping facilitates the introduction of weeds.
Vehicle damage- uncontrolled use of vehicles and trailbikes results in damage to vegetation and erosion
|
| Limosella granitica |
Exotic weeds |
Subject to invasion and crowding out by exotic water weeds. |
| Limosella granitica |
Pollution |
Occurs in small rockholes which are subject to pollution from sheep and cattle droppings and dust from agriculture |
| Malurus pulcherrimus (Blue-breasted Fairy-wren) |
Broad scale vegetation clearing |
Favours dense low vegetation, particularly in the vicinity of swamps |
| Malurus pulcherrimus (Blue-breasted Fairy-wren) |
Changed hydrology - salinity |
No data |
| Malurus pulcherrimus (Blue-breasted Fairy-wren) |
Feral animals |
Possible cat predation |
| Malurus pulcherrimus (Blue-breasted Fairy-wren) |
Grazing pressure |
Opening up of dense vegetation |
| Malurus pulcherrimus (Blue-breasted Fairy-wren) |
Increasing fragmentation and loss of remnants |
No data |
| Numenius madagascariensis (Eastern curlew) |
Other - describe |
Encroachment onto intertidal saltmarsh and sand flat feeding areas has resulted in a consistent decline in numbers observed during regular wader counts |
| Nyctophilus timoriensis (South-eastern form) (Eastern Long-eared Bat) |
Grazing pressure |
Has reduced the quality of habitat |
| Petrogale xanthopus xanthopus (Yellow-footed Rock-wallaby (SA and NSW)) |
Feral animals |
Predation by feral cats and foxes and competition with rabbits, sheep and goats. |
| Petrogale xanthopus xanthopus (Yellow-footed Rock-wallaby (SA and NSW)) |
Other - describe |
Small population numbers pose a stochastic and genetic risk. |
| Pterostylis xerophila (Desert Greenhood) |
Grazing pressure |
Rabbits, sheep and cattle. |
| Pterostylis xerophila (Desert Greenhood) |
Increasing fragmentation and loss of remnants |
Was widespread in fertile red loamy soils in dry Woodland but is now almost extinct due to conversion of this habitat to farmland. |
| Rulingia craurophylla |
Feral animals |
Rabbits |
| Rulingia craurophylla |
Grazing pressure |
No data |
| Rulingia craurophylla |
Increasing fragmentation and loss of remnants |
No data |
| Santalum spicatum (sandalwood) |
Grazing pressure |
Grazing by rabbits, goats and stock |
| Santalum spicatum (sandalwood) |
Other - describe |
Illegal harvesting
Lack of regeneration
|
| Stictonetta naevosa (Freckled Duck) |
Broad scale vegetation clearing |
Historic clearance and swamp drainage for agriculture has significantly reduced southern Australian habitat |
| Stictonetta naevosa (Freckled Duck) |
Changed hydrology - salinity |
No data |
| Stipa nullanulla (Club Spear-grass) |
Changed fire regimes |
No data |
| Stipa nullanulla (Club Spear-grass) |
Changed hydrology - salinity |
Rising saline groundwater |
| Stipa nullanulla (Club Spear-grass) |
Grazing pressure |
The species is highly palatable to stock and rabbits and it only survives where protected from grazing |
| Stipa nullanulla (Club Spear-grass) |
Other - describe |
Recreational pursuits such as the use of trail bikes and four wheel drives. |
| Swainsona pyrophila (Yellow Swainson-pea) |
Changed fire regimes |
No data |
| Swainsona pyrophila (Yellow Swainson-pea) |
Feral animals |
Rabbits |
| Swainsona pyrophila (Yellow Swainson-pea) |
Grazing pressure |
No data |
| GAW2 |
| Acanthiza iredalei iredalei (Slender-billed Thornbill (western)) |
Broad scale vegetation clearing |
No data |
| Acanthiza iredalei iredalei (Slender-billed Thornbill (western)) |
Changed fire regimes |
Long periods between fires creates older woody shrub and tree areas which are less favourable to good populations of the thornbill. |
| Acanthiza iredalei iredalei (Slender-billed Thornbill (western)) |
Feral animals |
Predation by fox and cat. |
| Acanthiza iredalei iredalei (Slender-billed Thornbill (western)) |
Increasing fragmentation and loss of remnants |
As the species is sedentary isolation in remnant native vegetation islands threatens the species especially if fire destroys a localised population. |
| Amytornis textilis myall (Thick-billed Grasswren (Gawler Ranges)) |
Grazing pressure |
Intense overgrazing could affect the taxon |
| Cacatua leadbeateri (Major Mitchell's Cockatoo) |
Broad scale vegetation clearing |
Clearance of feeding and breeding habitat. |
| Cacatua leadbeateri (Major Mitchell's Cockatoo) |
Exotic weeds |
As above. |
| Cacatua leadbeateri (Major Mitchell's Cockatoo) |
Grazing pressure |
Impeding the recruitment of trees that will be used for breeding in the future. |
| Cacatua leadbeateri (Major Mitchell's Cockatoo) |
Other - describe |
Nest robbing and trapping for aviculture. |
| Cyperus lhotskyanus |
Feral animals |
Rabbits and goats |
| Cyperus lhotskyanus |
Grazing pressure |
No data |
| Cyperus lhotskyanus |
Increasing fragmentation and loss of remnants |
No data |
| Limosella granitica |
Exotic weeds |
Subject to invasion and crowding out by exotic water weeds. |
| Limosella granitica |
Pollution |
Occurs in small rockholes which are subject to pollution from sheep and cattle droppings and dust from agriculture |
| Notoryctes typhlops (Yitjarritjarri, Southern Marsupial Mole) |
Changed fire regimes |
Changed fire regimes in the spinifex dominated sandy deserts. |
| Notoryctes typhlops (Yitjarritjarri, Southern Marsupial Mole) |
Feral animals |
Predation by foxes and cats. |
| Notoryctes typhlops (Yitjarritjarri, Southern Marsupial Mole) |
Other - describe |
Overall lack of knowledge on biology of species and threats |
| Notoryctes typhlops (Yitjarritjarri, Southern Marsupial Mole) |
Pollution |
Predation by dingoes |
| Nyctophilus timoriensis (South-eastern form) (Eastern Long-eared Bat) |
Grazing pressure |
Has reduced the quality of habitat |
| Petrogale xanthopus xanthopus (Yellow-footed Rock-wallaby (SA and NSW)) |
Feral animals |
Predation by foxes |
| Petrogale xanthopus xanthopus (Yellow-footed Rock-wallaby (SA and NSW)) |
Increasing fragmentation and loss of remnants |
Competition for resources with goats and rabbits |
| Petrogale xanthopus xanthopus (Yellow-footed Rock-wallaby (SA and NSW)) |
Other - describe |
Small population numbers pose a stochastic and genetic risk. |
| Pterostylis xerophila (Desert Greenhood) |
Broad scale vegetation clearing |
Was widespread in fertile red loamy soils in dry Woodland but is now almost extinct due to conversion of this habitat to farmland. |
| Pterostylis xerophila (Desert Greenhood) |
Grazing pressure |
Rabbits, sheep and cattle. |
| Rhodanthe oppositifolia ssp. oppositifolia (twin-leaf everlansting) |
Feral animals |
Rabbits and goats |
| Rhodanthe oppositifolia ssp. oppositifolia (twin-leaf everlansting) |
Grazing pressure |
No data |
| Rhodanthe oppositifolia ssp. oppositifolia (twin-leaf everlansting) |
Increasing fragmentation and loss of remnants |
No data |
| Santalum spicatum (sandalwood) |
Grazing pressure |
Grazing by rabbits, goats and stock |
| Santalum spicatum (sandalwood) |
Other - describe |
Lack of regeneration |
| Stipa nullanulla (Club Spear-grass) |
Changed fire regimes |
No data |
| Stipa nullanulla (Club Spear-grass) |
Changed hydrology - salinity |
Rising saline groundwater |
| Stipa nullanulla (Club Spear-grass) |
Grazing pressure |
The species is highly palatable to stock and rabbits and it only survives where protected from grazing |
| Stipa nullanulla (Club Spear-grass) |
Other - describe |
Recreational pursuits such as the use of trail bikes and four wheel drives.
The species occurs near gypsum salt lakes which are often subject to mining.
|
| Swainsona pyrophila (Yellow Swainson-pea) |
Changed fire regimes |
No data |
| Swainsona pyrophila (Yellow Swainson-pea) |
Grazing pressure |
No data |
| GAW3 |
| Cacatua leadbeateri (Major Mitchell's Cockatoo) |
Broad scale vegetation clearing |
Clearance of feeding and breeding habitat. |
| Cacatua leadbeateri (Major Mitchell's Cockatoo) |
Exotic weeds |
As above. |
| Cacatua leadbeateri (Major Mitchell's Cockatoo) |
Grazing pressure |
Impeding the recruitment of trees that will be used for breeding in the future. |
| Cacatua leadbeateri (Major Mitchell's Cockatoo) |
Other - describe |
Nest robbing and trapping for aviculture. |
| Codonocarpus pyramidalis |
Grazing pressure |
Goat and Rabbit grazing |
| Codonocarpus pyramidalis |
Other - describe |
Lack of recruitment |
| Cullen parvum (Small Scurf-pea) |
Exotic weeds |
Competition with introduced weeds |
| Cullen parvum (Small Scurf-pea) |
Grazing pressure |
Grazing by both native and introduced herbivores. |
| Cullen parvum (Small Scurf-pea) |
Increasing fragmentation and loss of remnants |
No data |
| Halosarcia flabelliformis (Bead Glasswort) |
Changed hydrology - other |
Altered hydrology could lead to excessive and prolonged flooding |
| Halosarcia flabelliformis (Bead Glasswort) |
Changed hydrology - salinity |
Altered hydrology could lead to excessive salinity and intolerable conditions. |
| Halosarcia flabelliformis (Bead Glasswort) |
Exotic weeds |
Competition with and displacement by exotic weeds |
| Halosarcia flabelliformis (Bead Glasswort) |
Feral animals |
Rabbits graze the species and facilitate the spread of weeds. |
| Halosarcia flabelliformis (Bead Glasswort) |
Grazing pressure |
Sheep graze along the margins of salt lakes and facilitate the introduction of exotic weeds. |
| Halosarcia flabelliformis (Bead Glasswort) |
Other - describe |
Mining for salt and gypsum
Rubbish dumping facilitates the introduction of weeds.
Vehicle damage- uncontrolled use of vehicles and trailbikes results in damage to vegetation and erosion.
|
| Malacocera gracilis (slender soft-horns) |
Feral animals |
Rabbits and Cattle |
| Malacocera gracilis (slender soft-horns) |
Grazing pressure |
No data |
| Malacocera gracilis (slender soft-horns) |
Increasing fragmentation and loss of remnants |
No data |
| Nephrurus deleani (Pernatty Knob-tail) |
Feral animals |
Rabbit grazing threatens habitat. |
| Nephrurus deleani (Pernatty Knob-tail) |
Grazing pressure |
Sheep and cattle grazing threatens the restricted habitat of this species and causes soil compaction and erosion. |
| Olearia pannosa subsp. pannosa (Sliver Daisy-bush) |
Exotic weeds |
Competition with exotic weeds. |
| Olearia pannosa subsp. pannosa (Sliver Daisy-bush) |
Feral animals |
Sheep and goats |
| Olearia pannosa subsp. pannosa (Sliver Daisy-bush) |
Other - describe |
Extremely low seed set and negligible seedling recruitment.
Road maintenance works for roadside populations.
|
| Olearia pannosa subsp. pannosa (Sliver Daisy-bush) |
Pathogens |
Mould and a fungus eating beetle in the genus Corticaria damage fruits. |
| Pterostylis xerophila (Desert Greenhood) |
Broad scale vegetation clearing |
Was widespread in fertile red loamy soils in dry Woodland but is now almost extinct due to conversion of this habitat to farmland. |
| Pterostylis xerophila (Desert Greenhood) |
Grazing pressure |
Rabbits, sheep and cattle. |
| Senecio megaglossus |
Changed fire regimes |
Inappropriate fire regimes, given the known requirement of fire by other Senecio species |
| Senecio megaglossus |
Exotic weeds |
Competition with invasive weeds prevents seedling establishment |
| Senecio megaglossus |
Grazing pressure |
The fleshy foliage appears susceptible to grazing by domestic stock, rabbits and feral goats. |
| Senecio megaglossus |
Increasing fragmentation and loss of remnants |
Some populations are considered too small to be viable. |
| Stictonetta naevosa (Freckled Duck) |
Broad scale vegetation clearing |
Historic clearance and swamp drainage for agriculture has significantly reduced southern Australian habitat |
| Stictonetta naevosa (Freckled Duck) |
Changed hydrology - salinity |
No data |
| Stipa nullanulla (Club Spear-grass) |
Changed fire regimes |
No data |
| Stipa nullanulla (Club Spear-grass) |
Changed hydrology - salinity |
Rising saline groundwater |
| Stipa nullanulla (Club Spear-grass) |
Grazing pressure |
The species is highly palatable to stock and rabbits and it only survives where protected from grazing |
| Stipa nullanulla (Club Spear-grass) |
Other - describe |
Recreational pursuits such as the use of trail bikes and four wheel drives.
The species occurs near gypsum salt lakes which are often subject to mining.
|
| Swainsona pyrophila (Yellow Swainson-pea) |
Changed fire regimes |
No data |
| Swainsona pyrophila (Yellow Swainson-pea) |
Grazing pressure |
No data |
| GAW4 |
| Acanthiza iredalei iredalei (Slender-billed Thornbill (western)) |
Broad scale vegetation clearing |
No data |
| Acanthiza iredalei iredalei (Slender-billed Thornbill (western)) |
Changed fire regimes |
Long periods between fires creates older woody shrub and tree areas which are less favourable to good populations of the thornbill. |
| Acanthiza iredalei iredalei (Slender-billed Thornbill (western)) |
Feral animals |
Predation by fox and cat. |
| Acanthiza iredalei iredalei (Slender-billed Thornbill (western)) |
Increasing fragmentation and loss of remnants |
As the species is sedentary isolation in remnant native vegetation islands threatens the species especially if fire destroys a localised population. |
| Atriplex kochiana (Koch's saltbush) |
Feral animals |
Rabbits and goats |
| Atriplex kochiana (Koch's saltbush) |
Grazing pressure |
No data |
| Atriplex kochiana (Koch's saltbush) |
Increasing fragmentation and loss of remnants |
No data |
| Frankenia plicata |
Grazing pressure |
Grazing by stock affects the plant both directly and by habitat degradation resulting in increased run-off |
| Frankenia plicata |
Increasing fragmentation and loss of remnants |
No data |
| Halosarcia flabelliformis (Bead Glasswort) |
Changed hydrology - other |
Altered hydrology could lead to excessive and prolonged flooding |
| Halosarcia flabelliformis (Bead Glasswort) |
Changed hydrology - salinity |
Altered hydrology could lead to excessive salinity and intolerable conditions. |
| Halosarcia flabelliformis (Bead Glasswort) |
Exotic weeds |
Competition with and displacement by exotic weeds |
| Halosarcia flabelliformis (Bead Glasswort) |
Feral animals |
Rabbits graze the species and facilitate the spread of weeds. |
| Halosarcia flabelliformis (Bead Glasswort) |
Grazing pressure |
Sheep graze along the margins of salt lakes and facilitate the introduction of exotic weeds. |
| Halosarcia flabelliformis (Bead Glasswort) |
Other - describe |
Mining for salt and gypsum
Rubbish dumping facilitates the introduction of weeds.
Vehicle damage- uncontrolled use of vehicles and trailbikes results in damage to vegetation and erosion.
|
| Nephrurus deleani (Pernatty Knob-tail) |
Feral animals |
Rabbit grazing threatens habitat. |
| Nephrurus deleani (Pernatty Knob-tail) |
Grazing pressure |
Sheep and cattle grazing threatens the restricted habitat of this species and causes soil compaction and erosion. |
| Pseudomys australis (Plain's Rat) |
Feral animals |
Predation by foxes |
| Pseudomys australis (Plain's Rat) |
Grazing pressure |
Habitat disruption by rabbits and cattle |
| Pseudomys australis (Plain's Rat) |
Other - describe |
Dingoes and Letter-winged Kites predate upon the species. |
| Santalum spicatum (sandalwood) |
Grazing pressure |
Grazing by rabbits, goats and stock |
| Santalum spicatum (sandalwood) |
Other - describe |
Lack of regeneration |
| Stipa nullanulla (Club Spear-grass) |
Changed fire regimes |
No data |
| Stipa nullanulla (Club Spear-grass) |
Changed hydrology - salinity |
Rising saline groundwater |
| Stipa nullanulla (Club Spear-grass) |
Grazing pressure |
The species is highly palatable to stock and rabbits and it only survives where protected from grazing |
| Stipa nullanulla (Club Spear-grass) |
Other - describe |
Recreational pursuits such as the use of trail bikes and four wheel drives.
The species occurs near gypsum salt lakes which are often subject to mining.
|
| GAW5 |
| Acanthiza iredalei iredalei (Slender-billed Thornbill (western)) |
Broad scale vegetation clearing |
No data |
| Acanthiza iredalei iredalei (Slender-billed Thornbill (western)) |
Changed fire regimes |
Long periods between fires creates older woody shrub and tree areas which are less favourable to good populations of the thornbill. |
| Acanthiza iredalei iredalei (Slender-billed Thornbill (western)) |
Feral animals |
Predation by fox and cat. |
| Acanthiza iredalei iredalei (Slender-billed Thornbill (western)) |
Increasing fragmentation and loss of remnants |
As the species is sedentary isolation in remnant native vegetation islands threatens the species especially if fire destroys a localised population. |
| Cacatua leadbeateri (Major Mitchell's Cockatoo) |
Broad scale vegetation clearing |
Clearance of feeding and breeding habitat. |
| Cacatua leadbeateri (Major Mitchell's Cockatoo) |
Exotic weeds |
As above. |
| Cacatua leadbeateri (Major Mitchell's Cockatoo) |
Grazing pressure |
Impeding the recruitment of trees that will be used for breeding in the future. |
| Cacatua leadbeateri (Major Mitchell's Cockatoo) |
Other - describe |
Nest robbing and trapping for aviculture. |
| Grevillea treueriana (Mt Finke Grevillea) |
Feral animals |
Rabbits and goats |
| Grevillea treueriana (Mt Finke Grevillea) |
Grazing pressure |
No data |
| Grevillea treueriana (Mt Finke Grevillea) |
Increasing fragmentation and loss of remnants |
No data |
| Nyctophilus timoriensis (South-eastern form) (Eastern Long-eared Bat) |
Grazing pressure |
Has reduced the quality of habitat |
| Swainsona pyrophila (Yellow Swainson-pea) |
Changed fire regimes |
No data |
| Swainsona pyrophila (Yellow Swainson-pea) |
Grazing pressure |
No data |