Biodiversity

Species Profile and Threats Database


For information to assist proponents in referral, environmental assessments and compliance issues, refer to the Policy Statements and Guidelines (where available), the Conservation Advice (where available) or the Listing Advice (where available).
 
In addition, proponents and land managers should refer to the Recovery Plan (where available) or the Conservation Advice (where available) for recovery, mitigation and conservation information.

EPBC Act Listing Status Listed as Vulnerable as Acacia depressa
Listing and Conservation Advices Commonwealth Conservation Advice on Acacia depressa (Echidna Wattle) (Threatened Species Scientific Committee, 2008dv) [Conservation Advice].
 
Recovery Plan Decision Recovery Plan not required, included on the Not Commenced List (1/11/2009).
 
Adopted/Made Recovery Plans
Federal Register of
    Legislative Instruments
Declaration under s178, s181, and s183 of the Environment Protection and Biodiversity Conservation Act 1999 - List of threatened species, List of threatened ecological communities and List of threatening processes (Commonwealth of Australia, 2000) [Legislative Instrument] as Acacia depressa.
 
State Government
    Documents and Websites
WA:Declared Rare Flora in the Katanning District (Graham, M. & M. Mitchell, 2000) [State Species Management Plan].
State Listing Status
WA: Listed as Endangered (Wildlife Conservation Act 1950 (Western Australia): September 2013 list) as Acacia depressa
Scientific name Acacia depressa [5685]
Family Fabaceae:Fabales:Magnoliopsida:Magnoliophyta:Plantae
Species author Maslin
Infraspecies author  
Reference Nuytsia 1 (27 Mar. 1975) 422, fig. 10.
Other names Acacia echinata [60991]
Distribution map Species Distribution Map

This is an indicative distribution map of the present distribution of the species based on best available knowledge. See map caveat for more information.

Illustrations Google Images

A prostrate, compact, cushion-like shrub, growing less than 5 cm high with a diameter of 50 cm or more (Leigh et al. 1984; Hopper et al. 1990; Brown et al. 1998; Orchard & Wilson 2001a). A prickly shrub 0.02-0.15 m high (Paczkowska & Chapman 2000).

The species is only known from the area of the type locality (Maslin 1975), lateritic hills between Kukerin and Tarin Rock (Maslin 1975; Leigh et al. 1984), in the Duggan area (Brown et al. 1998), west of Lake Grace (Hopper et al. 1990; Brown et al. 1998; Orchard & Wilson 2001a), Katanning District, south-western WA (Graham & Mitchell 2001).

The prostrate form and summer flowering may have resulted in the species being overlooked (Maslin, pers. comm. in Leigh et al. 1984). The species is conserved in Tarin Rock NR (Leigh et al. 1984; Briggs & Leigh 1996) but is bisected by a road. The surviving plants were not considered secure by Leigh et al. (1984).

A summary of the known population details as in Graham & Mitchell (2001):

Population [as
numbered by WA CALM]
LocationLand StatusYear of survey/
number of plants
Condition
1Tarin RockNature Reserve1983 - 138+good condition
2Tarin RockNature Reserve1983 - 142fair (7 dead)
3Tarin RockNature Reserve1985 - 93healthy
4Tarin RockNature Reserve1983 - 58good
5Tarin RockNature Reserve1983 - 7good
6Tarin RockRoad Reserve1987 - 39previously disturbed (1984)
7Tarin RockPrivate Property1987 - 114some buried from wind erosion
8Tarin RockPrivate Property1988 - 330&nbsp
9aTarin RockOther Crown Land?&nbsp
9bTarin RockRoad Reserve?&nbsp
10aTarin RockNature Reserve1991 - ca. 100healthy
10bTarin RockRoad Reservehealthy
11Tarin RockRoad Reserve1988 - 20+healthy
12Tarin RockPrivate Property1988 - ca. 570burnt in 1985
13aTarin RockNature Reserve1988 - 143healthy
13bTarin RockRoad Reservehealthy

Confined to the very tops of low lateritic hills (Leigh et al. 1984; Hopper et al. 1990; Brown et al. 1998; Paczkowska & Chapman 2000; Orchard & Wilson 2001a). The gravelly soils (Paczkowska & Chapman 2000) are skeletal and vegetation cover is sparse. The plants grow on exposed patches of ground apparently too rocky to support most other plant species. The vegetation is scrub, open heath and low shrubland (Orchard & Wilson 2001a). The species has been observed colonising the virtually bare rock road embankment passing through one site. The surrounding heathland is dominated by Banksia, Melaleuca, Beaufortia and Acacia species with scattered patches of Eucalyptus uncinata. Average annual rainfall for the area is 350 mm, with a marked winter incidence (Leigh et al. 1984).

The minute (Leigh et al. 1984) spherical flower heads are borne Dec.-Jan. (Leigh et al. 1984; Hopper et al. 1990; Brown et al. 1998; Paczkowska & Chapman 2000; Orchard & Wilson 2001a). Good seed germination has been noted following early autumn fires (Brown et al. 1998). Low seedling numbers occur following disturbance (Graham & Mitchell 2001).

The following table lists known and perceived threats to this species. Threats are based on the International Union for Conservation of Nature and Natural Resources (IUCN) threat classification version 1.1.

Threat Class Threatening Species References
Ecosystem/Community Stresses:Ecosystem Degradation:Habitat deterioration due to soil degradation and erosion Commonwealth Conservation Advice on Acacia depressa (Echidna Wattle) (Threatened Species Scientific Committee, 2008dv) [Conservation Advice].
Ecosystem/Community Stresses:Indirect Ecosystem Effects:Restricted geographical distribution (area of occupancy and extent of occurrence) Acacia depressa in Species Profile and Threats (SPRAT) database (Department of the Environment and Heritage (DEH), 2006ag) [Internet].
Human Intrusions and Disturbance:Human Intrusions and Disturbance:Mechanical disturbance during construction, maintanance or recreational activities Acacia depressa in Species Profile and Threats (SPRAT) database (Department of the Environment and Heritage (DEH), 2006ag) [Internet].
Natural System Modifications:Fire and Fire Suppression:Inappropriate and/or changed fire regimes (frequency, timing, intensity) Commonwealth Conservation Advice on Acacia depressa (Echidna Wattle) (Threatened Species Scientific Committee, 2008dv) [Conservation Advice].
Protected status:Protected status:Lack of secure conservation land tenure Acacia depressa in Species Profile and Threats (SPRAT) database (Department of the Environment and Heritage (DEH), 2006ag) [Internet].
Species Stresses:Indirect Species Effects:Low numbers of individuals Acacia depressa in Species Profile and Threats (SPRAT) database (Department of the Environment and Heritage (DEH), 2006ag) [Internet].

Briggs, J.D. & J.H. Leigh (1996). Rare or Threatened Australian Plants - Revised Edition. Collingwood: CSIRO Publishing.

Brown, A., C. Thomson-Dans & N. Marchant, eds. (1998). Western Australia's Threatened Flora. Como, Western Australia: Department of Conservation and Land Management.

Graham, M. & M. Mitchell (2000). Declared Rare Flora in the Katanning District. [Online]. Western Australia Department of Conservation and Land Management. Available from: http://www.dpaw.wa.gov.au/plants-and-animals/threatened-species-and-communities/threatened-plants.

Hopper, S.D., S. van Leeuwen, A.P. Brown & S.J. Patrick (1990). Western Australia's Endangered Flora and other plants under consideration for declaration. Perth, Western Australia: Department of Consrvation and Land Management.

Leigh, J., R. Boden & J. Briggs (1984). Extinct and Endangered Plants of Australia. Melbourne, Victoria: Macmillan.

Maslin, B.R. (1975). Studies in the genus Acacia (Mimosaceae) - 4. A Revision of the Series Pulchellae. Nuytsia 1(5). Page(s) 388-494.

Meredith, L.D. & M.M. Richardson (1990). Rare or Threatened Australian Plant Species in Cultivation in Australia. Report Series No. 15. Page(s) 1-114. Canberra: Australian National Parks and Wildlife Service.

Orchard, A.E. & A.J.G. Wilson, eds. (2001a). Flora of Australia, Volume 11B, Mimosaceae, Acacia Part 2. In: Flora of Australia. Canberra, ACT: ABRS & CSIRO.

Paczkowska, G. & A.R. Chapman (2000). The Western Australian Flora, A Descriptive Catalogue. The Wildflower Society of Western Australia (Inc.), the Western Australian Herbarium, Department of Conservation and Land Management and the Botanic Gardens & Parks Authority.

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This database is designed to provide statutory, biological and ecological information on species and ecological communities, migratory species, marine species, and species and species products subject to international trade and commercial use protected under the Environment Protection and Biodiversity Conservation Act 1999 (the EPBC Act). It has been compiled from a range of sources including listing advice, recovery plans, published literature and individual experts. While reasonable efforts have been made to ensure the accuracy of the information, no guarantee is given, nor responsibility taken, by the Commonwealth for its accuracy, currency or completeness. The Commonwealth does not accept any responsibility for any loss or damage that may be occasioned directly or indirectly through the use of, or reliance on, the information contained in this database. The information contained in this database does not necessarily represent the views of the Commonwealth. This database is not intended to be a complete source of information on the matters it deals with. Individuals and organisations should consider all the available information, including that available from other sources, in deciding whether there is a need to make a referral or apply for a permit or exemption under the EPBC Act.

Citation: Department of the Environment (2014). Acacia depressa in Species Profile and Threats Database, Department of the Environment, Canberra. Available from: http://www.environment.gov.au/sprat. Accessed Thu, 28 Aug 2014 09:20:55 +1000.