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EPBC Act Policy Statement 3.7<br />

Nationally Threatened Species and Ecological Communities<br />

<strong>Peppermint</strong> <strong>Box</strong> (<strong>Eucalyptus</strong> <strong>odorata</strong>) Grassy Woodland<br />

<strong>of</strong> South Australia and Iron-grass Natural Temperate<br />

Grassland <strong>of</strong> South Australia<br />

June 2007<br />

ENVIRONMENT PROTECTION AND BIODIVERSITY CONSERVATION ACT


GUIDE TO LISTING<br />

What is the <strong>Peppermint</strong> <strong>Box</strong> (<strong>Eucalyptus</strong><br />

<strong>odorata</strong>) Grassy Woodland <strong>of</strong> South Australia?<br />

The <strong>Peppermint</strong> <strong>Box</strong> (<strong>Eucalyptus</strong> <strong>odorata</strong>) Grassy<br />

Woodland <strong>of</strong> South Australia ecological community<br />

extends from the southern Flinders Ranges to Lake<br />

Alexandrina. It is mostly found in the Flinders–L<strong>of</strong>ty<br />

Block Bioregion but patches also extend into the<br />

Murray–Darling Depression, Kanmantoo, Eyre–Yorke<br />

Block and Gawler Bioregions. Its general distribution<br />

is illustrated on the general area map (opposite).<br />

Remaining patches <strong>of</strong> this ecological community<br />

typically occur on gentle to moderate slopes,<br />

hilltops and adjacent plains. The soil types range<br />

from sandy-loam to clay-loam. The annual rainfall<br />

is between 310 and 610 millimetres a year.<br />

<strong>Peppermint</strong> <strong>Box</strong> (<strong>Eucalyptus</strong> <strong>odorata</strong>) is the dominant<br />

species <strong>of</strong> the tree canopy. The woodland tree form<br />

(a single main trunk at the base with low branches)<br />

<strong>of</strong> <strong>Peppermint</strong> <strong>Box</strong> characterises this ecological<br />

community.<br />

Other tree species that may be present in the<br />

canopy but are not as abundant as <strong>Peppermint</strong><br />

<strong>Box</strong> include: Grey <strong>Box</strong> (E. microcarpa); South<br />

Australian Blue Gum (E. leucoxylon); Sugar Gum<br />

(E. cladocalyx); Mallee <strong>Box</strong> (E. porosa); Drooping<br />

Sheoak (Allocasuarina verticillata); White Cypresspine<br />

(Callitris glaucophylla); and Southern Cypresspine<br />

(C. gracilis).<br />

The vegetation structure is an open to dense<br />

woodland. The tree canopy comprises low trees,<br />

generally 5–10 metres tall but sometimes up to<br />

15 metres tall, with a typical canopy cover <strong>of</strong><br />

5–40 per cent which can occasionally reach<br />

70 per cent (Hyde 1996; Robertson 1998).<br />

2<br />

The ground layer mainly comprises grasses and<br />

herbs which can vary from a relatively dense and<br />

diverse layer, in more open sites, to a sparse layer<br />

under more densely wooded sites. The grasses and<br />

herbs that most <strong>of</strong>ten occur include Wallaby Grasses<br />

(Austrodanthonia spp.), Spear Grasses (Austrostipa<br />

spp.), Iron-grasses (Lomandra spp.) and Black-anther<br />

Flax Lily (Dianella revoluta). Shrubs are sparse in the<br />

understorey with cover up to 30 per cent. The most<br />

common shrub species present are Sweet Bursaria<br />

(Bursaria spinosa) and Golden Wattle (Acacia<br />

pycnantha).<br />

A list <strong>of</strong> the main plant species known to occur in<br />

the <strong>Peppermint</strong> <strong>Box</strong> (<strong>Eucalyptus</strong> <strong>odorata</strong>) Grassy<br />

Woodland <strong>of</strong> South Australia ecological community<br />

is at Table 1.<br />

Shrubs can occur naturally in grassy woodlands,<br />

and can form an important part <strong>of</strong> the <strong>Peppermint</strong><br />

<strong>Box</strong> (<strong>Eucalyptus</strong> <strong>odorata</strong>) Grassy Woodland <strong>of</strong><br />

South Australia ecological community. Where they<br />

occur, they provide important habitat for many<br />

bird and insect species. Accordingly, a patch that<br />

has a significant ground layer <strong>of</strong> tussock grasses,<br />

and where the distribution <strong>of</strong> shrubs is scattered<br />

or patchy, is this ecological community. A remnant<br />

with a continuous shrub layer, in which the shrub<br />

cover is greater than 30 per cent, is excluded. As<br />

the shrub cover in this ecological community is<br />

naturally patchy, shrubs may be dominant over a<br />

very localised area.<br />

<strong>Peppermint</strong> <strong>Box</strong> (<strong>Eucalyptus</strong> <strong>odorata</strong>) Grassy Woodland<br />

(Peter Komidar)


Table 1. Characteristic flora <strong>of</strong> the <strong>Peppermint</strong> <strong>Box</strong> (<strong>Eucalyptus</strong> <strong>odorata</strong>) Grassy Woodland <strong>of</strong> South<br />

Australia ecological community, based on Hyde (1996) and Robertson (1998)<br />

Layer Species Common name(s)<br />

Dominant tree<br />

canopy<br />

<strong>Eucalyptus</strong> <strong>odorata</strong> <strong>Peppermint</strong> <strong>Box</strong><br />

Tree canopy Allocasuarina verticillata Drooping Sheoak<br />

Callitris glaucophylla White Cypress-pine, White Cypress, White Pine,<br />

Callitris gracilis Murray Pine, Mallee Pine, Slender Cypress-pine, Southern<br />

Cypress-pine<br />

<strong>Eucalyptus</strong> cladocalyx Sugar Gum<br />

<strong>Eucalyptus</strong> goniocalyx Long-leaved <strong>Box</strong>, Bundy<br />

<strong>Eucalyptus</strong> leucoxylon Blue Gum, Yellow Gum, South Australian Blue Gum, Water<br />

Gum, White Ironbark<br />

<strong>Eucalyptus</strong> microcarpa Grey <strong>Box</strong>, Narrow-leaved <strong>Box</strong>, Inland Grey <strong>Box</strong>, Western<br />

Grey <strong>Box</strong><br />

<strong>Eucalyptus</strong> porosa Mallee <strong>Box</strong>, Black Mallee-box<br />

Exocarpos cupressiformis Cherry Ballart, Native Cherry, Wild Cherry, Cherry Wood<br />

Shrub layer Acacia pycnantha Golden Wattle, Broad-leaved Wattle<br />

Beyeria lechenaulti Pale Turpentine Bush<br />

Bursaria spinosa Australian Blackthorn, Bursaria, Blackthorn, Native<br />

Blackthorn, Sweet Bursaria, Whitethorn, Christmas Bush<br />

Einadia nutans ssp. nutans Climbing Saltbush, Nodding Saltbush<br />

Enchylaena tomentosa var. tomentosa Ruby Saltbush, Barrier Saltbush<br />

Eutaxia microphylla var. microphylla Eutaxia, Mallee Bush-pea<br />

Ozothamnus retusus Notched Bush-everlasting<br />

Olearia decurrens<br />

Rhagodia parabolica Fragrant Saltbush, Mealy Saltbush<br />

Ground layer Aristida behriana Brush Wiregrass<br />

Arthropodium strictus Chocolate Lily<br />

Asperula conferta Common Woodruff<br />

Austrodanthonia caespitosa Ringed Wallaby-grass, Common Wallaby-grass<br />

Austrodanthonia setacea Small-flowered Wallaby-grass<br />

Austrostipa blackii Crested Spear-grass<br />

Austrostipa elegantissima Feather Spear-grass<br />

Austrostipa eremophila Rusty Spear-grass<br />

Austrostipa nitida Balcarra Spear-grass<br />

Austrostipa scabra Rough Spear-grass, Rough Needle-grass<br />

Calocephalus citreus Lemon Beauty-heads<br />

Cheilanthes austrotenuifolia Rock-fern<br />

Chrysocephalum apiculatum Yellow Buttons, Common Everlasting<br />

Convolvulus augustissimus<br />

Convolvulus remotus<br />

Australian Bindweed<br />

Crassula colorata Annual Stonecrop, Dense Crassula, Dense Stonecrop<br />

Crassula decumbens var. decumbens Spreading Crassula, Spreading Stonecrop<br />

Crassula sieberiana<br />

Cymbonotus preissianus<br />

Australian Stonecrop, Sieber Crassula<br />

Daucus glochidiatus Australian Carrot, Native Carrot<br />

4


Table 1. Characteristic flora <strong>of</strong> the <strong>Peppermint</strong> <strong>Box</strong> (<strong>Eucalyptus</strong> <strong>odorata</strong>) Grassy Woodland <strong>of</strong> South<br />

Australia ecological community, based on Hyde (1996) and Robertson (1998) continued<br />

Layer Species Common name(s)<br />

Dianella revoluta Blueberry Lily, Black-Anther Flax Lily<br />

Elymus scaber var. scabrus Native Wheat-grass, Common Wheat-grass<br />

Goodenia pinnatifida<br />

Goodenia pusilliflora<br />

Cut-leaf Goodenia<br />

Glycine rubignosa<br />

Lepidosperma viscidum<br />

Lomandra densiflora<br />

Twining Glycine<br />

Lomandra effusa<br />

Lomandra micrantha<br />

Scented Mat-rush; Iron-grass<br />

Lomandra multiflora ssp.dura Iron-grass<br />

Oxalis perennans Grass Wood-sorrel<br />

Maireana enchylaenoides Cotton-bush, Wingless fissure-weed, Wingdecs Bluebush<br />

Plantago varia Small Plantain, Sago-weed<br />

Ptilotus spathulatus Pussytails, Cat’s Paws<br />

Senecio quadridentatus Cotton Fireweed<br />

Sida corrugata<br />

Stackhousia spp.<br />

Corrugated Sida<br />

Vittadinia cuneata Fuzzweed<br />

Wahlenbergia luteola A Bluebell<br />

What is the Iron-grass natural temperate<br />

grassland <strong>of</strong> South Australia?<br />

The Iron-grass Natural Temperate Grassland <strong>of</strong> South<br />

Australia ecological community primarily occurs<br />

within the Flinders-L<strong>of</strong>ty Block Bioregion. The main<br />

extant patches lie in the area between Clare and<br />

Peterborough. However, patches extend into the<br />

Kanmantoo, Eyre–Yorke Block and Murray–Darling<br />

Depression Bioregions. Its general distribution is<br />

shown on the map on page 3.<br />

The ecological community generally occurs on gentle<br />

slopes <strong>of</strong> low hills above 380 metres above sea<br />

level. The soils on which it occurs are predominantly<br />

loams to clay-loams with an estimated clay content<br />

<strong>of</strong> 30–35 per cent. Surface pebbles are common at<br />

some sites and shale or sandstone rocky outcrops<br />

may also be present. The mean annual rainfall ranges<br />

from 280 to 600 millimetres per year.<br />

The structure <strong>of</strong> the vegetation is <strong>of</strong> a tussock<br />

grassland. Trees and tall shrubs are absent to<br />

sparse (cover less than 10 per cent) and tussock-<br />

5<br />

forming perennial grasses and Iron-grasses dominate<br />

the ground layer. A range <strong>of</strong> herbaceous plant<br />

species occurs in the inter-tussock spaces.<br />

Iron-grasses (Lomandra multiflora ssp. dura and<br />

Lomandra effusa) are the dominant and most<br />

characteristic feature <strong>of</strong> the vegetation. About<br />

10–70 per cent <strong>of</strong> the ground area is covered by<br />

Lomandra spp. Where the vegetative ground cover is<br />

minimal, Lomandra would still be expected to be one<br />

<strong>of</strong> the most common species. It must be noted that<br />

Lomandra may be absent in small areas (less than 1<br />

hectare) <strong>of</strong> the listed ecological community, however<br />

if these patches sit within the context <strong>of</strong> other areas<br />

containing Lomandra then these small patches are<br />

still considered to be part <strong>of</strong> the listed ecological<br />

community.<br />

Native plant species commonly recorded in<br />

Iron-grass Natural Temperate Grassland <strong>of</strong> South<br />

Australia ecological community is at Table 2.


Table 2. Common flora <strong>of</strong> the Iron-grass Natural Temperate Grassland <strong>of</strong> South Australia<br />

ecological community<br />

The plant list is based on surveys by Hyde (1995) and Robertson (1998) in the Flinders–L<strong>of</strong>ty Ranges<br />

and <strong>Department</strong> for Environment and Heritage (2001a) at Mokota Conservation Reserve<br />

Perennial native<br />

grasses<br />

Species Common name/s<br />

Aristida behriana* Brush Wiregrass<br />

Austrodanthonia auriculata Lobed Wallaby-grass<br />

Austrodanthonia caespitosa* Ringed Wallaby-grass, Common Wallaby-grass<br />

Austrodanthonia carphioides Short Wallaby-grass<br />

Austrostipa acrociliata Graceful Spear-grass<br />

Austrostipa blackii* Crested Spear-grass<br />

Austrostipa elegantissima Feather Spear-grass<br />

Austrostipa eremophila* Rusty Spear-grass<br />

Austrostipa nitida* Balcarra Spear-grass<br />

Austrostipa nodosa<br />

Austrostipa scabra Rough Spear-grass, Rough Needle-grass<br />

Enneapogon nigricans Black-head Grass<br />

Themeda triandra* Kangaroo Grass<br />

Grass-like plants Arthropodium strictus Chocolate Lily<br />

Bulbine bulbosa Bulbine Lily, Native Onion, Native Leek<br />

Dianella revoluta<br />

Lepidosperma viscidum<br />

Blueberry Lily, Black-Anther Flax Lily<br />

Lomandra effusa* Scented Mat-rush<br />

Lomandra multiflora ssp. dura* Many-flowered Mat-rush, Hard Mat-rush, Stiff Iron-grass<br />

Wurmbea dioica ssp. dioica Early Nancy<br />

Broad-leaved Asperula conferta Common Woodruff<br />

herbaceous species<br />

Brachyscome lineariloba Hard-headed Daisy<br />

* Indicates co-dominant species<br />

Calocephalus citreus Lemon Beauty-heads<br />

Chrysocephalum apiculatum Yellow Buttons, Common Everlasting<br />

Chrysocephalum semipapposum Clustered Everlasting, Yellow Buttons<br />

Convolvulus augustissimus Australian Bindweed<br />

Convolvulus remotus<br />

Crassula colorata Annual Stonecrop, Dense Crassula, Dense Stonecrop<br />

Crassula sieberana ssp. tetramera Australian Stonecrop, Sieber Crassula<br />

Eryngium ovinum/rostratum Blue Devil<br />

Euphorbia drummondii Caustic-weed, Red Soldier, Flat Spurge, Cuastic<br />

Creeper, Creeping Caustic, Mat-spurge, Milkweed<br />

Glycine rubignosa Twining Glycine<br />

Goodenia pinnatifida Cut-leaf Goodenia<br />

Goodenia pusilliflora<br />

Hyalosperma semisterile<br />

Isoetopsis graminifolia Grass Cushion<br />

Leptorhynchos squamatus Scaly Buttons<br />

Leptorhynchos tetrachaetus Little Buttons<br />

6


Table 2. Common flora <strong>of</strong> the Iron-grass Natural Temperate Grassland <strong>of</strong> South Australia ecological<br />

community continued<br />

Broad-leaved<br />

herbaceous species<br />

continued<br />

Species Common name/s<br />

Minuria leptophylla Minnie Daisy<br />

Oxalis perennans Grass Wood-sorrel<br />

Plantago varia Small Plantain, Sago-weed<br />

Podolepis tepperi<br />

Ptilotus spathulatus Pussytails, Cat’s Paws<br />

Rhodanthe pygmaea Pygmy Sunray<br />

Rumex dumosus Wiry Dock<br />

Sida corrugata. Corrugated Sida<br />

Stackhousia monogyna<br />

Swainsona behriana<br />

Creamy Candles, Creamy Stackhousia<br />

Thysanotus baueri<br />

Velleia arguta<br />

Mallee Fringe-lily<br />

Velleia paradoxa Spur Velleia<br />

Vittadinia cuneata<br />

Vittadinia gracilis<br />

Vittadinia megacephala<br />

Fuzzweed<br />

Wahlenbergia luteola A Bluebell<br />

Shrubs Bursaria spinosa Australian Blackthorn, Bursaria, Blackthorn, Native<br />

Blackthorn, Sweet Bursaria, Whitethorn, Christmas Bush<br />

Cryptandra amara ssp. longiflora Long-flower Cryptandra<br />

Enchylaena tomentosa Ruby Saltbush, Barrier Saltbush<br />

Maireana enchylaenoides Cotton-bush, Wingless Fissure-weed, Wingless<br />

Bluebush<br />

Maireana excavata Bottle Bluebush, Bottle Fissure-weed<br />

Pimelea micrantha<br />

Why were the <strong>Peppermint</strong> <strong>Box</strong> (<strong>Eucalyptus</strong><br />

<strong>odorata</strong>) Grassy Woodland <strong>of</strong> South Australia<br />

and Iron-grass Natural Temperate Grassland<br />

<strong>of</strong> South Australia listed as critically<br />

endangered?<br />

These ecological communities were listed as critically<br />

endangered under the Environment Protection<br />

and Biodiversity Conservation Act 1999 (the EPBC<br />

Act) because <strong>of</strong> a severe decline in distribution<br />

and ongoing loss <strong>of</strong> integrity. The decision by the<br />

Australian Minister for the Environment and Water<br />

Resources to list the communities followed careful<br />

consideration <strong>of</strong> advice from the Threatened Species<br />

Scientific Committee—an independent scientific<br />

body that advises the Minister on the conservation<br />

status <strong>of</strong> native species and ecological communities.<br />

7<br />

National listing <strong>of</strong> these ecological communities<br />

recognises that their long-term survival is under<br />

threat. The listing aims to prevent their further<br />

decline, and assist community and landholder efforts<br />

toward the recovery <strong>of</strong> these ecological communities.<br />

Both <strong>of</strong> these ecological communities have been<br />

heavily cleared and face similar threats across their<br />

range. In most <strong>of</strong> the areas that remain, grazing and<br />

pasture-improvement have effectively removed the<br />

characteristic native, perennial tussock grasses,<br />

herbs and shrubs, leaving many areas dominated<br />

by exotic weeds. Grazing has also prevented<br />

the regeneration <strong>of</strong> the overstorey species in the<br />

<strong>Peppermint</strong> <strong>Box</strong> Grassy Woodland <strong>of</strong> South Australia,<br />

to the extent that large areas <strong>of</strong> healthy, regenerating<br />

trees are rare.


Threats<br />

The key threats to the survival <strong>of</strong> both ecological<br />

communities include clearing, grazing and<br />

weed invasion. Other threats include road and<br />

rail maintenance activities and the effects <strong>of</strong><br />

fragmentation.<br />

Clearing for cropping and cultivated pasture<br />

eliminates native species, including any soil-stored<br />

seed, preventing their re-establishment without<br />

assistance.<br />

Grazing has reduced the diversity <strong>of</strong> the native<br />

species across most remaining sites <strong>of</strong> both<br />

ecological communities. As many grasses and forbs<br />

do not form persistent soil seed banks, once plants<br />

have been eliminated from the standing vegetation,<br />

they are unable to re-establish naturally, even if<br />

grazing pressure is removed.<br />

As well as direct impacts on individual plants, grazing<br />

can have indirect effects upon other native species<br />

through soil disturbance and physical changes to<br />

the soil such as compaction, nutrient enrichment,<br />

reduced water infiltration and erosion. These changes<br />

to the soil can facilitate and maintain weed invasion<br />

and make soil conditions unsuitable for native species<br />

regeneration.<br />

The degree <strong>of</strong> degradation <strong>of</strong> a patch varies with the<br />

grazing regime history. Constant grazing pressure<br />

throughout the year is more likely to eliminate grazing<br />

sensitive species than intermittent or seasonal<br />

stocking. This is why areas such as road sides which<br />

have only had intermittent grazing, <strong>of</strong>ten contain<br />

some <strong>of</strong> the best remnants.<br />

Calostemma purpurea (Garland lily): Iron-grass Natural Temperate<br />

Grassland <strong>of</strong> South Australia (Rosemary Purdie)<br />

8<br />

Austrostipa spp. (Speargrass) (John Vranjic)<br />

Weed invasion is a major threatening process for<br />

both ecological communities. Patches that have been<br />

heavily invaded by annual weeds such as Squirrel<br />

Tail Fescue and Rats Tail Fescue (Vulpia spp.) and<br />

Bearded Oats (Avena barbata) may still have a good<br />

cover <strong>of</strong> native species outside <strong>of</strong> spring. Annual<br />

weeds can be controlled through appropriate grazing<br />

and fire regimes. Perennial weeds such as Salvation<br />

Jane/Patterson’s Curse (Echium plantagineum)<br />

and Wild Sage (Salvia verbenaca) represent a more<br />

intractable problem.<br />

Persistent and intensive weed management using<br />

a variety <strong>of</strong> techniques is required to bring some<br />

weeds to a manageable threshold. Techniques<br />

include strategic mowing, slashing and clipping<br />

exotic grasses (to reduce their seed set and promote<br />

native regeneration) and the spot spraying or weed<br />

brushing <strong>of</strong> broadleaf weeds and perennial grasses<br />

with herbicide. Weeds growing in close proximity to<br />

native species should be removed by hand clipping.<br />

The aim in managing weeds is to reduce competition<br />

and assist natural regeneration and recovery <strong>of</strong> native<br />

plant communities.<br />

The Iron-grass Natural Temperate Grassland <strong>of</strong> South<br />

Australia is also threatened by inappropriate tree<br />

planting and agricultural snails.


Condition<br />

A condition class describes areas <strong>of</strong> an ecological<br />

community that have a similar conservation value.<br />

Condition can be determined by factors such as:<br />

numbers and types <strong>of</strong> native plants and animals<br />

present; the level <strong>of</strong> weed invasion; the size <strong>of</strong><br />

the area; and distance to the next area <strong>of</strong> native<br />

vegetation.<br />

Significantly degraded (low condition) areas are not<br />

part <strong>of</strong> a listed ecological community. This means<br />

that protection provisions <strong>of</strong> the EPBC Act are<br />

focused on the most valuable elements <strong>of</strong> Australia’s<br />

natural environment, while degraded areas, which do<br />

not trigger the ‘significance test’ <strong>of</strong> the EPBC Act,<br />

are largely excluded.<br />

9<br />

In order for an area to be included in either <strong>of</strong> the<br />

listed ecological communities, a patch must have a<br />

good diversity <strong>of</strong> native species and contain a good<br />

selection and cover <strong>of</strong> perennial native grasses. Table<br />

3 (below) outlines the two condition classes that are<br />

considered to be part <strong>of</strong> the listed <strong>Peppermint</strong> <strong>Box</strong><br />

(<strong>Eucalyptus</strong> <strong>odorata</strong>) Grassy Woodland <strong>of</strong> South<br />

Australia.<br />

Table 4 (page 10) outlines the two condition<br />

classes that are considered to be part <strong>of</strong> the listed<br />

Iron-grass Natural Temperate Grassland <strong>of</strong> South<br />

Australia. In both <strong>of</strong> these tables a third condition<br />

class is provided that describes areas considered<br />

to be suitable for rehabilitation but which are not<br />

considered part <strong>of</strong> the listed ecological communities.<br />

Table 3. Condition classes for the <strong>Peppermint</strong> <strong>Box</strong> (<strong>Eucalyptus</strong> <strong>odorata</strong>) Grassy Woodland<br />

<strong>of</strong> South Australia<br />

Classes A and B are indicative <strong>of</strong> the listed ecological community. Class C is indicative <strong>of</strong> patches that<br />

are degraded but could be rehabilitated to the listed ecological community. For a patch <strong>of</strong> vegetation<br />

to fall within a condition class it must meet or exceed each <strong>of</strong> the thresholds. For example, to meet<br />

condition class A a patch must be at least 0.1 ha in size and have more than 30 native species and at<br />

least 10 native broad-leaved herbaceous species not on the disturbance resistant list and have at least<br />

five native perennial grass species.<br />

No. <strong>of</strong> broad-leaved<br />

herbaceous species<br />

Condition class Minimum size<br />

1<br />

in addition to identified<br />

disturbance resistant species2 No. <strong>of</strong> native<br />

perennial<br />

grass species1 Diversity <strong>of</strong><br />

native plant<br />

Listed ecological community<br />

species<br />

A ≥ 0.1 ha > 30 ≥ 10 ≥ 5<br />

B ≥ 1 ha > 15 ≥ 3 ≥ 2<br />

Degraded patches amenable to rehabilitation<br />

C > 5 No minimum ≥ 1<br />

1<br />

Legend:<br />

Left to right:<br />

Austrostipa spp. (Speargrass),<br />

Minuria leptophylla (Minnie daisy),<br />

Lomandra multiflora ssp. dura (Iron-grass)<br />

(John Vranjic)<br />

1 As measured in a 50 m x 50 m quadrat (or equivalent).<br />

2 The following species are identifed as disturbance resistant species: Ptilotus spathulatus forma spathulatus; Sida corrugata;<br />

Oxalis perennans; Convolvulus augustissimus; Euphorbia drummondii; and Maireana enchylaenoides.


Table 4. Condition classes for the Iron-Grass Natural Temperate Grassland <strong>of</strong> South Australia<br />

Classes A and B are indicative <strong>of</strong> the listed ecological community. Class C is indicative <strong>of</strong> patches that are<br />

degraded but could be rehabilitated to become the listed ecological community. For a patch <strong>of</strong> vegetation<br />

to fall within a condition class it must meet or exceed the relevant threshold. For example to meet<br />

condition class A a patch must be at least 0.1 ha in size and have more than 30 native species and at<br />

least 10 native broad-leaved forb species not on the disturbance resistant list and have at least five native<br />

perennial grass species (excluding Lomandra) and have at least one native perennial tussock (including<br />

Lomandra) per linear metre.<br />

Diversity <strong>of</strong><br />

native plant<br />

Condition class Minimum size species1 No. <strong>of</strong> broad-leaved<br />

herbaceous species1 in addition to identified<br />

disturbance resistant species2 No. <strong>of</strong> native<br />

perennial<br />

grass species1 Tussock<br />

count3 Listed ecological community<br />

A ≥ 0.1 ha > 30 ≥ 10 ≥ 5 ≥ 1/m<br />

B ≥ 0.25 ha > 15 ≥ 3 ≥ 4 ≥ 1/m<br />

Degraded patches amenable to rehabilitation<br />

C > 5 No minimum ≥ 1 No<br />

minimum<br />

Legend:<br />

1 As measured in a 50 m x 50 m quadrat (or equivalent).<br />

2 The following species are identifed as disturbance resistant species: Ptilotus spathulatus forma spathulatus; Sida corrugata;<br />

Oxalis perennans; Convolvulus augustissimus ; Euphorbia drummondii; and Maireana enchylaenoides.<br />

3 As measured along a 50m transect.<br />

The Condition Class A and B outlined above for<br />

both ecological communities are the minimum<br />

level at which a patch is considered to be part<br />

<strong>of</strong> the listed ecological community. However, this<br />

does not represent the ideal state <strong>of</strong> the ecological<br />

community. The larger and more diverse a patch is,<br />

the more important it is. Additionally, patches that<br />

link remnants in the landscape, patches that occur<br />

in regions in which the ecological community is<br />

extremely uncommon, and patches that contain rare,<br />

declining or threatened species are important to the<br />

continuing viability <strong>of</strong> the ecological community into<br />

the future.<br />

How do I know if I have either <strong>of</strong> these<br />

ecological communities on my land?<br />

You can use the condition class information above<br />

and the following flowcharts (on pages 11 and 12)<br />

to determine whether or not you have either <strong>of</strong> the<br />

listed ecological communities on land you manage.<br />

10<br />

If the vegetation on your property was formerly<br />

<strong>Peppermint</strong> <strong>Box</strong> (<strong>Eucalyptus</strong> <strong>odorata</strong>) Grassy<br />

Woodland <strong>of</strong> South Australia or Iron-Grass Natural<br />

Temperate Grasslands <strong>of</strong> South Australia but no<br />

longer meets either <strong>of</strong> the definitions above, you may<br />

be able to work towards restoring this vegetation<br />

using the conservation actions outlined below.<br />

Areas that do not meet the condition criteria for<br />

inclusion in the listed ecological community, but<br />

should be given priority for regeneration include:<br />

large remnants; remnants containing mature trees,<br />

especially those with hollows; areas that link<br />

remnants in the landscape; remnants that occur in<br />

those areas in which the ecological community has<br />

been most heavily cleared and degraded; and those<br />

that contain rare, declining or threatened species.


Flowchart 1. <strong>Peppermint</strong> <strong>Box</strong> Grassy Woodland <strong>of</strong> South Australia<br />

Is the patch 0.1 ha in size or greater? NO<br />

YES<br />

Does the patch contain more than<br />

30 native plant species?<br />

YES<br />

Does the patch have at least 10 native<br />

broad-leaved herbaceous species that<br />

do not occur in the list below*?<br />

YES<br />

Does the patch have at least five<br />

perennial native grass species?<br />

YES<br />

NO Is the patch 1.0 ha in size or greater? NO<br />

NO<br />

NO<br />

The listed ecological community<br />

11<br />

YES<br />

Does the patch contain more than<br />

15 native plant species?<br />

YES<br />

Does the patch have at least three<br />

native broad-leaved herbaceous<br />

species that do not occur in the list<br />

below*?<br />

YES<br />

Does the patch have at least two<br />

perennial native grass species?<br />

* Ptilotus spathulatus forma spathulatus; Sida corrugata; Oxalis perennans; Convolvulus augustissimus;<br />

Euphorbia drummondii; and Maireana enchylaenoides.<br />

YES<br />

NO<br />

NO<br />

NO<br />

<strong>Eucalyptus</strong> <strong>odorata</strong> buds<br />

(Brooker & Kleinig © Australian National Botanic Gardens)<br />

Not the listed<br />

ecological<br />

community


Flowchart 2. Iron-grass Natural Temperate Grassland <strong>of</strong> South Australia<br />

Is the patch 0.1 ha in size or greater? NO<br />

YES<br />

Does the patch contain more than<br />

30 native plant species?<br />

YES<br />

Does the patch have at least 10 native<br />

broad-leaved herbaceous species that<br />

do not occur in the list below*?<br />

YES<br />

Does the patch have at least five<br />

perennial native grass species?<br />

YES<br />

Does the patch have at least one native<br />

perennial tussock per linear metre?<br />

YES<br />

NO Is the patch 0.25 ha in size or greater? NO<br />

NO<br />

NO<br />

NO<br />

The listed ecological community<br />

12<br />

YES<br />

Does the patch contain more than<br />

15 native plant species?<br />

YES<br />

Does the patch have at least three<br />

broad-leaved herbaceous species that<br />

do not occur in the list below*?<br />

YES<br />

Does the patch have at least four<br />

perennial native grass species?<br />

YES<br />

Does the patch have at least<br />

one native perennial tussock per<br />

linear metre?<br />

* Ptilotus spathulatus forma spathulatus; Sida corrugata; Oxalis perennans; Convolvulus augustissimus;<br />

Euphorbia drummondii; and Maireana enchylaenoides.<br />

YES<br />

NO<br />

NO<br />

NO<br />

NO<br />

Not the listed<br />

ecological<br />

community


What does the listing <strong>of</strong> these ecological<br />

communities mean for land managers?<br />

Protection under the EPBC Act applies to all<br />

components <strong>of</strong> the listed <strong>Peppermint</strong> <strong>Box</strong><br />

(<strong>Eucalyptus</strong> <strong>odorata</strong>) Grassy Woodland <strong>of</strong> South<br />

Australia and Iron-grass Natural Temperate<br />

Grassland <strong>of</strong> South Australia ecological communities.<br />

However, listing <strong>of</strong> these ecological communities<br />

under the EPBC Act will not prevent landholders<br />

from continuing to use their land in the same way<br />

they were before, providing they do not change or<br />

intensify their activities.<br />

National protection means any new or intensified<br />

activities that may be likely to have a significant<br />

impact upon either <strong>of</strong> the listed ecological<br />

communities should be referred to the Australian<br />

Minister for the Environment and Water Resources<br />

for assessment and approval (unless they are subject<br />

to an exemption under the EPBC Act). Activities<br />

that may have a significant impact include, but are<br />

not restricted to, clearing <strong>of</strong> remnants or supporting<br />

vegetation, grazing, introducing excessive nutrients<br />

to remnants and introducing potentially invasive<br />

pasture species into the proximity <strong>of</strong> remnants.<br />

The process for making a referral under the EPBC<br />

Act is easy and without charge. More information<br />

is available from the <strong>Department</strong>’s web site at<br />

www.environment.gov.au/epbc/index.html.<br />

Based on your referral, the Minister will determine<br />

if assessment and approval is required. If approval<br />

is not required, then you are free to take action<br />

in accordance with your referral. If approval is<br />

required, strict timeframes in the EPBC Act ensure<br />

the assessment and approval process is conducted<br />

in a timely manner.<br />

The EPBC Act allows for some exemptions to<br />

the requirement for assessment and approval.<br />

This means that some activities may not need<br />

an assessment or approval if you meet certain<br />

requirements. Information on exemptions is available<br />

online at: www.environment.gov.au/epbc/<br />

publications/exemptions.<br />

13<br />

What are the conservation priorities for the<br />

<strong>Peppermint</strong> <strong>Box</strong> (<strong>Eucalyptus</strong> <strong>odorata</strong>) Grassy<br />

Woodland <strong>of</strong> South Australia and Iron-grass<br />

Natural Temperate Grassland <strong>of</strong> South<br />

Australia?<br />

As part <strong>of</strong> its advice to the Minister, the Threatened<br />

Species Scientific Committee also provides<br />

recommendations on priority conservation actions<br />

that can assist in the recovery <strong>of</strong> these ecological<br />

communities.<br />

The priority actions identified for the <strong>Peppermint</strong><br />

<strong>Box</strong> (<strong>Eucalyptus</strong> <strong>odorata</strong>) Grassy Woodland <strong>of</strong> South<br />

Australia are:<br />

• protection <strong>of</strong> remnants <strong>of</strong> the listed ecological<br />

community through the development <strong>of</strong><br />

conservation agreements and covenants<br />

• control <strong>of</strong> existing weeds in remnants, particularly<br />

Squirrel Tail and Rats Tail Fescue (Vulpia spp.),<br />

Bearded Oats (Avena barbata) and Salvation Jane/<br />

Patterson’s Curse (Echium plantagineum)<br />

• exclusion <strong>of</strong> continuous grazing from remnants<br />

• use <strong>of</strong> strategic grazing (incorporating rest at<br />

appropriate times) in areas with larger numbers<br />

<strong>of</strong> native species<br />

• protection <strong>of</strong> remnants from new weeds by<br />

preventing soil disturbance in and around<br />

remnants, and the speedy eradication <strong>of</strong> any<br />

new invasions and<br />

• expansion and connection <strong>of</strong> existing remnants.<br />

The priority actions identified for the Iron-grass<br />

Natural Temperate Grassland <strong>of</strong> South Australia are:<br />

• protection <strong>of</strong> remnants <strong>of</strong> the listed ecological<br />

community through the development <strong>of</strong><br />

conservation agreements and covenants<br />

• exclusion <strong>of</strong> continuous grazing from remnants,<br />

coupled with weed management and control and<br />

use <strong>of</strong> strategic grazing (incorporating rest at<br />

appropriate times)<br />

• protection <strong>of</strong> remnants from weeds by preventing<br />

soil disturbance in and around remnants, and the<br />

speedy eradication <strong>of</strong> any new invasions and<br />

• expansion and connection <strong>of</strong> existing remnants.<br />

These lists do not encompass all actions that may<br />

be <strong>of</strong> benefit to these ecological communities, but<br />

highlights those that are considered to be <strong>of</strong> the<br />

highest priority at the time <strong>of</strong> listing.


Restoration and management <strong>of</strong> temperate grasslands in South Australia:<br />

Efforts <strong>of</strong> the Threatened Plant Action Group<br />

Since 1994, the Threatened Plant Action Group<br />

(TPAG) has been working to protect and restore<br />

remnants <strong>of</strong> temperate grasslands in the mid-north<br />

<strong>of</strong> South Australia. TPAG have initiated work at<br />

three sites containing important grassland habitat.<br />

The work undertaken on these sites includes<br />

intensive weed management with up to 12 site<br />

visits annually. The techniques used include:<br />

strategic mowing, slashing and clipping <strong>of</strong> exotic<br />

grasses (to reduce their seed set and promote<br />

native regeneration), spot spraying or weed<br />

brushing broadleaf weeds and perennial grasses<br />

with herbicide. Weeds growing in close proximity<br />

to native species are removed by hand clipping.<br />

Before the TPAG began working on the sites not<br />

many people had given them much thought as<br />

they were small and in poor condition. Weeds,<br />

including exotic annual and perennial grasses<br />

(eg Wild Oats, Phalaris and Tall Wheat-grass)<br />

and broadleaf plants (eg Salvation Jane, thistles,<br />

Scabious and Wild Sage), dominated the sites and<br />

few native species were abundant.<br />

After many years <strong>of</strong> hard work, native species<br />

diversity and abundance has increased<br />

substantially with lilies, daisies, other herbs,<br />

grasses and sedges appearing or increasing at<br />

the sites. Although some weed species are still<br />

present, they fill much less <strong>of</strong> the available space.<br />

Some native shrubs, herbs and grasses (grown<br />

from locally collected seed) have also been<br />

planted at the sites, locally collected seeds have<br />

been scattered in slashed areas and rubbish has<br />

also been removed. Fencing has been erected at<br />

some sites to preclude harmful land use activities.<br />

These actions aim to aid the in-situ recovery <strong>of</strong><br />

threatened grassland species and are guided by<br />

a recovery team.<br />

TPAG’s work has been supported by: the local<br />

community; Northern Areas Council; Clare<br />

and Gilbert Valley Council; South Australian<br />

<strong>Department</strong> for Transport, Energy and<br />

14<br />

Infrastructure; Australian Southern Rail; and the<br />

South Australian <strong>Department</strong> for Environment<br />

and Heritage.<br />

The Australian Government, South Australian<br />

<strong>Department</strong> <strong>of</strong> Transport, Energy and Infrastructure<br />

and the Northern and Yorke Natural Resource<br />

Management Group have provided funding for<br />

a range <strong>of</strong> recovery actions.<br />

For more information, or to get involved in<br />

threatened plant recovery in South Australia<br />

contact the Threatened Plant Action Group:<br />

Tel: 08 8232 4088<br />

Email: tpag@ncssa.asn.au.<br />

Funding is available for projects to recover<br />

threatened species and ecological communities.<br />

This includes work on rehabilitating areas<br />

that were formerly part <strong>of</strong> a listed ecological<br />

community, but are now degraded.<br />

• For information about the Threatened Species<br />

Network Community grants visit:<br />

www.wwf.org.au/tsn<br />

• For information about Envir<strong>of</strong>und grants visit:<br />

www.nht.gov.au/envir<strong>of</strong>und<br />

You may also wish to participate in the<br />

development and implementation <strong>of</strong> your region’s<br />

Natural Resource Management Plan. In this case,<br />

contact your local land management agency.<br />

<strong>Peppermint</strong> <strong>Box</strong> (<strong>Eucalyptus</strong> <strong>odorata</strong>) Grassy Woodland<br />

(Peter Komidar)


Where can I go for further information?<br />

The Threatened Plant Action Group <strong>of</strong> the Nature Conservation Society <strong>of</strong> South<br />

Australia can provide information on the management <strong>of</strong> land containing both<br />

the <strong>Peppermint</strong> <strong>Box</strong> (<strong>Eucalyptus</strong> <strong>odorata</strong>) Grassy Woodland <strong>of</strong> South Australia<br />

and Iron-grass Natural Temperate Grassland <strong>of</strong> South Australia:<br />

Tel: 08 8223 6301<br />

Email: tpag@ncssa.asn.au<br />

Useful web sites<br />

• EPBC Act web site: www.environment.gov.au/epbc<br />

• EPBC Act Administrative Guidelines on Significance:<br />

www.environment.gov.au/epbc/assessmentsapprovals/guidelines/<br />

index.html<br />

• Referral form: www.environment.gov.au/epbc/assessmentsapprovals/<br />

referrals/form.html<br />

Further information is also available from the <strong>Department</strong> <strong>of</strong> the Environment<br />

and Water Resources Community Information Unit:<br />

Email: ciu@environment.gov.au<br />

Freecall: 1800 803 772<br />

15<br />

Top to bottom:<br />

E. <strong>odorata</strong> (Brooker & Kleinig<br />

© Australian National Botanic<br />

Gardens), Austrostipa spp.<br />

(Speargrass) (John Vranjic),<br />

female pygmy blue-tongue<br />

lizard (Peter Robertson),<br />

grassland flowers (John Vranjic)<br />

Printed June 2007


Cover images (clockwise from left): E. <strong>odorata</strong> (Brooker & Kleinig © Australian National Botanic Gardens), female pygmy blue-tongue lizard (Mark Hutchinson),<br />

Austrostipa spp. (Speargrass) (John Vranjic), Minuria leptophylla (Minnie daisy) (John Vranjic)<br />

ENVIRONMENT PROTECTION AND BIODIVERSITY CONSERVATION ACT

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