Skip navigation
Back to home page

West Region's Threatened Plants

Threatened Flora Updates

Community Involvement

Threatened Plant Recovery Projects

Threatened Plants of Eyre Peninsula and the Far West

Video Footage

More Information

Location Map

Ark on Eyre   Search  View Main Menu options

Threatened Plants

Winter Spider-orchid (Photo: Jane Hutchinson)

Get Acrobat ReaderDocuments for download from this site are in PDF format and you will need Adobe Acrobat Reader to view them. The reader is free and can be downloaded from the Adobe website.

You will need appropriate video playing software to view video files on this page. Download Windows Media Player or Download QuickTime Player.

Threatened plants are those plant species considered to be at risk of extinction in the wild on either a National, State or Regional basis. In South Australia, we refer to these species as Endangered, Vulnerable to extinction, or Rare.

Threatened plants are subjected to a range of threatening processes. We are working with the community to overcome these threats and help in the recovery of our region's threatened plants.

Ninety-seven nationally threatened plant species listed under the Environment Protection and Biodiversity Conservation (EPBC) Act 1999 occur in South Australia. At a State level, about 22 percent of South Australia's plant species are listed as threatened in South Australia under the National Parks and Wildlife (NP&W) Act 1972 (ie 785 out of a total of 3500 plant species recorded in the State). This includes species considered extinct in South Australia. For more information see the Department for Environment and Heritage Threatened Species web page and the State of the Environment Report for South Australia 2003.

Silver Daisy-bush
Nationally Vulnerable Silver Daisy-bush Olearia pannosa ssp. pannosa

West Region's Threatened Plants

The flora of West Region is unique. The region is where the 'East meets the West' in terms of Australian plants, resulting in a unique mixture of species. West Region is also home to a large number of plant species that are found nowhere else in the world. We call these species 'endemic'. There are approximately 40 endemic plant species on Eyre Peninsula.

Unfortunately West Region also has a relatively high number of plant species that are threatened with extinction. On Eyre Peninsula, 26 plant species are listed as nationally threatened under the Environment Protection and Biodiversity Conservation Act 1999. Ten of these nationally threatened plants are endemic to the peninsula. At a State level, 132 plants found on Eyre Peninsula are listed under the National Parks and Wildlife Act 1972 as threatened in South Australia. A number of plants are also considered threatened on a regional level.

Due to a lack of scientific understanding about non-vascular plants (eg mosses, liverworts and algae) and aquatic plant species, it is unclear how many of these types of plants are also threatened, but it could be a significant number.

See Threatened Plants on Eyre Peninsula brochure (1.5Mb PDF).

See Threatened Flora of the South Australian Department for Environment and Heritage's West Region (550Kb PDF) for a list of threatened plant species found on Eyre Peninsula and the Far West.

Brochure cover

See the Threatened Plants of Eyre Peninsula and the Far West for a list of selected threatened plants found in our region.

Threats

Species that are threatened often live in less than ideal situations, where various processes affect their ability to survive and reproduce.

The threatening processes affecting the plants of the West Region vary between species and populations, however common threats include:

  • changed fire patterns
  • changed water patterns
  • climate change
  • competition with weeds (eg Bridal Creeper and Perennial Veldt Grass)
  • diseases such as the root rot fungus Phytophthora, an infectious soil and waterborne fungi that causes plant dieback
  • disturbance by vehicles
  • fragmented habitat
  • grazing by herbivores (eg by introduced animals such as livestock, rabbits and goats, and by native animals such as kangaroos)
  • habitat loss from building development
  • land clearance and modification of habitat
  • loss of native pollinators (eg insects and small animals)
  • road and rail maintenance
  • rubbish dumping
  • salinity.

These threats are not listed in order of importance, because they differ between species and populations.

Inspecting damaged vegetation

 
Purple-flowered Polygala weeds invading critical habitat of the Endangered Metallic Sun-orchid
Inspecting damaged vegetation caused by roadside maintenance at an Endangered Fat-leaf Wattle site   Purple-flowered Polygala weeds invading critical habitat of the Endangered Metallic Sun-orchid

Recovery

The Draft Recovery Plan for 23 Threatened Flora Taxa on Eyre Peninsula, South Australia 2007-2012 (4.5Mb PDF) is one of the most diverse multi-species regional recovery action plans in Australia. It addresses 21 nationally listed and two state listed threatened plant species found on Eyre Peninsula. The Plan provides a comprehensive summary of the region’s threatened flora information and prioritised actions for today’s natural resource custodians.

The Draft Recovery Plan is open for public comment until 30 June 2008. See Latest News for details on how you can make a written submission.

The Draft Recovery Plan for 23 Threatened Flora Taxa on Eyre Peninsula, South Australia 2007-2012 (4.5Mb PDF) aims to address two long-term conservation goals over 30 years:

    Goal 1. Recover threatened plant species critical habitat on Eyre Peninsula
    Goal 2. Recover threatened plant species populations on Eyre Peninsula.

Recovery of threatened flora species is defined by five objectives:
  1. Obtain baseline information, including critical and potential habitat, for each threatened flora species
  2. Increase understanding, appreciation and involvement in threatened flora recovery efforts
  3. Manage immediate threats and improve threatened flora critical habitat
  4. Conduct research critical to management by addressing knowledge deficiencies in threatened flora biology and ecology (including threat identification)
  5. Monitor threatened flora populations and evaluate the success of recovery actions.

In West Region, progress is already being made on many of these recovery objectives. For examples of this work, see the Threatened Plant Recovery Projects section.

For more information about the Draft Recovery Plan:

Ironstone Mulla Mulla survey grids

  Roadside marker
Ironstone Mulla Mulla survey grids, including this one burnt in the 2005 Black Tuesday bushfire, are monitored annually   Markers are installed to identify and protect significant roadside plant and animal habitat during road maintenance works

Threatened Species Updates

We regularly publish Threatened Species Updates to keep interested people up-to-date with threatened plant conservation activities on Eyre Peninsula.

Community Involvement

Conservation Volunteers Australia participants controlling the weed Tree Lucerne
Conservation Volunteers Australia participants controlling the weed Tree Lucerne near threatened plants

Volunteers and community groups greatly assist our work and play a key role in threatened plant recovery on Eyre Peninsula and the Far West. Groups that have contributed to the project include:

How You Can Help

Take photos instead of picking native flowers
Take photos instead of picking native flowers

Everyone can be involved in helping to save threatened species. If you are interested in volunteering for threatened plant recovery projects on Eyre Peninsula and the Far West, please fill out and submit a Volunteering Form or contact us for more information.

Please be aware of native plants and help preserve them by:

  • preventing damage caused by grazing animals
  • controlling weeds to reduce competition
  • preventing removal of native plants by land clearance and illegal collection
  • taking photos instead of picking native flowers
  • joining your local Landcare, Friends of Parks, or similar group and looking after a threatened plant population
  • reporting any new sightings of threatened plants to the West Region Threatened Flora Officer, so they can be added to the statewide database and used in future management of the species.

For other ideas on how you can help protect our natural environment see Green Tips.

Potential Research Projects

Staff from the West Region of the Department for Environment and Heritage and local volunteers are keen to work in partnership with postgraduate students and other groups on research projects aimed at increasing our knowledge about the biology and ecology of threatened plants in our region.

See our list of potential research projects.

Threatened Plant Recovery Projects

Native Orchid Volunteers

Volunteers monitoring native orchids
Volunteers monitoring native orchids
Photo: Ivon Perrin

A small number of enthusiastic orchid volunteers regularly visit bushland and roadsides across lower Eyre Peninusla to find, monitor and photograph native orchids. Native orchids are often cryptic and difficult to find, but the volunteers have located several previously unknown populations of threatened orchids, including the Metallic Sun-orchid (250Kb PDF) and Winter Spider-orchid. Eyre Peninsula is home to five Nationally threatened orchid species, two of which are found only on Eyre Peninsula.

Our volunteers have produced a practical field guide Orchids of Lower Eyre Peninsula (published by Pam Hewstone and Jane Hutchinson, ISBN 0-646-41938-2). Copies are available for purchase from the Department for Environment and Heritage office in Port Lincoln.

See Metallic Sun-orchid Information Sheet (250Kb PDF).

See video footage of Metallic Sun-orchid habitat after fire, and the plant's flowers opening in sunlight to attract pollinators (4.2Mb file).

Bead Samphire Monitoring

Tagging, mapping and monitoring threatened Bead Samphire plants
Tagging, mapping and monitoring threatened Bead Samphire plants

With the help of local volunteers, we are monitoring populations of Bead Samphire (100Kb PDF), a plant listed nationally as Vulnerable to extinction. Bead Samphire grows in saltmarshes and samphire flats, often on the foreshore of salt lakes and on saline flats. The species has been identified as a potential indicator of signs of climate change, particularly environmental changes associated with rising sea-levels, so monitoring Bead Samphire is important work.

Bead Samphire plants are monitored at Fowlers Bay, Acraman Creek and Sceale Bay conservation parks, and Arno Bay. Population structure is being monitored to assess changes in the number of juvenile plants, small adults, adults, and those plants that are dying or damaged.

See Bead Samphire Information Sheet (100Kb PDF).

West Coast Mintbush Recovery

West Coast Mintbush in flower
West Coast Mintbush in flower, showing few signs of grazing damage

West Coast Mintbush (100Kb PDF) is found nowhere else in the world but on Eyre Peninsula and the Far West (ie it is endemic to our region). The species is listed nationally as Vulnerable to extinction. We are working with the community to conduct grazing monitoring and baseline surveys to help West Coast Mintbush populations recover.

West Coast Mintbush is threatened by grazing herbivores including kangaroos, rabbits and livestock. Our monitoring project aims to assess how much West Coast Mintbush plants are being grazed, and how this grazing is impacting the plants' reproduction success. We are also trying to improve our understanding of where West Coast Mintbush is found. Land-holders and community members on Eyre Peninsula and the Far West are encouraged to contact us for an information pack to help record mintbushes in the local area.

See West Coast Mintbush Information Sheet (100Kb PDF).

 

Schools

A number of schools have made an important contribution to the recovery of threatened plants on Eyre Peninsula and the Far West. Projects have included:

  • Saving Silver Daisy-bush - Cleve Area School
  • Saving threatened wattles - Cummins Area School
  • Saving Whibley's Wattle - Tumby Bay Area School.

See For Schools.

Green Corps

Several Green Corps teams have been involved in threatened plant conservation activities on Eyre Peninsula including:

Green Corps is an Australian Government youth development and environmental training program for young people aged between 17 and 20 years.

See the Green Corps website.

Green Corps participants   Green Corps team members
Green Corps participants fenced Endangered Chalky Wattles to protect the plants from grazing   Green Corps team members cleaning seed collected from native plants

Lower Eyre Peninsula Bushfire Recovery

At least seven nationally threatened plant species were impacted by the 2005 Black Tuesday bushfire. The Department for Environment and Heritage has coordinated a scientific program to undertake threatened plant recovery actions as part of the Lower Eyre Peninsula Bushfire Re-establishment Program.

See Lower Eyre Peninsula Bushfire Re-establishment Program: Scientific Program.

Collecting seed from Alcock's Wattle
Collecting seed from Alcock's Wattle Acacia alcockii, listed as Rare in South Australia

Botanic Gardens of Adelaide Seed Conservation Centre

Our on-the-ground threatened plant recovery projects are complemented by the important work of the Botanic Gardens of Adelaide Seed Conservation Centre. The primary objective of the Seed Conservation Centre is to undertake seed collections of priority plant species throughout South Australia for the establishment of long-term seed conservation collections, and development of germination and storage protocols for each species collected. Seed from West Coast Mintbush, Whibley's Wattle, Tufted Bush-pea, and other local threatened plants has been collected by the Seed Conservation Centre as part of the international Millenium Seed Bank Project.

See the Botanic Gardens of Adelaide Seed Conservation Centre.

 

Threatened Plants of Eyre Peninsula and the Far West

The following section lists a selection of threatened plant species found in the West Region. More information about some of these species is available by accessing the information sheets, web pages and reports via the links provided.

See Threatened Flora of the South Australian Department for Environment and Heritage's West Region (550Kb PDF) for a list of threatened plant species found on Eyre Peninsula and the Far West.

For more information about individual nationally threatened plant species, see the Australian Department of the Environment, Water, Heritage and the Arts Species Profile and Threats (SPRAT) Database. You can search the SPRAT database for a species profile for any nationally threatened plant species. The database provides information on what the species looks like, its population and distribution, habitat, reproduction, taxonomy, and a useful reference list.

List of Selected Nationally Threatened Plant Species Found in the West Region

Nationally Endangered Corruna Daisy
Nationally Endangered Corruna Daisy Brachycome muelleri
(Photo: Manfred Jusaitis)

Endangered (Commonwealth Environment Protection and Biodiversity Conservation Act 1999)

Vulnerable (Commonwealth Environment Protection and Biodiversity Conservation Act 1999)

  • Feathery Wattle or Imbricate Wattle Acacia imbricata
  • Resin Wattle or Neat Wattle Acacia rhetinocarpa
  • Club Spear-grass Austrostipa nullanulla
  • Winter Spider-orchid Caladenia brumalis syn. Arachnorchis brumalis
  • Slender Bell-fruit Codonocarpus pyramidalis
  • Bead Samphire Halosarcia flabelliformis - Information Sheet (100Kb PDF)
  • Granite Mudwort Limosella granitica
  • Microlepidium alatum
  • Silver Daisy-bush Olearia pannosa ssp. pannosa - Information Sheet (300Kb PDF)
  • Silver Candles Pleuropappus phyllocalymmeus
  • West Coast Mintbush Prostanthera calycina - Information Sheet (100Kb PDF)
  • Nodding Rufous-hood Pterostylis aff. despectans syn. Oligochaetochilus mirabilis
  • Desert Greenhood Pterostylis xerophila syn. Oligochaetochilus xerophilus
  • Ironstone Mulla Mulla or Becker's Pussy-tail Ptilotus beckerianus - Information Sheet (50Kb PDF)
  • Tufted Bush-pea Pultenaea trichophylla
  • Large-flower Groundsel or Superb Groundsel Senecio megaglossus - Information Sheet (450Kb PDF)
  • Annual Candles Stackhousia annua
  • Yellow Swainson-pea Swainsona pyrophila

Nationally Vulnerable Granite Mudwor

 
Nationally Vulnerable Silver Candles
Nationally Vulnerable Granite Mudwort Limosella granitica   Nationally Vulnerable Silver Candles Pleuropappus phyllocalymmeus

List of Selected State Threatened Plant Species Found in the West Region

Endangered (South Australian National Parks and Wildlife Act 1972)

  • Mt Olinthus Greenhood Pterostylis "Mt Olinthus" syn. Oligochaetochilus sp. "Mt Olinthus"

Vulnerable (South Australian National Parks and Wildlife Act 1972)

  • Sandalwood Santalum spicatum

Video Footage

See video footage of Metallic Sun-orchid habitat after fire, and the plant's flowers opening in sunlight to attract pollinators (4.1Mb file).

See video footage of Fat-leaf Wattle at a roadside site (4Mb file). Note the wattle's fat, fleshy phyllodes (leaf-like structures). The video also highlights the threat of habitat fragmentation. Fat-leaf Wattles are now mainly restricted to roadsides and rail reserves. The wattles in the video have been badly damaged during road maintenance.

More information

 

 

  Top of Page  
  This page was last modified 2007-05-25  
   
Privacy, Disclaimer and Copyright Disclaimer Copyright Privacy Government of South Australia - Department for Environment and Heritage SA Government logo. Link to Minister's web site Department for Environment and Heritage SA Government logo. Link to Minister's web site