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
Recovery Plan Decision Recovery Plan required, this species had a recovery plan in force at the time the legislation provided for the Minister to decide whether or not to have a recovery plan (19/2/2007).
 
Adopted/Made Recovery Plans Limestone Blue Wattle Acacia caerulescens - National Recovery Plan (Carter, O. & N. Walsh, 2006c) [Recovery Plan].
 
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].
 
State Government
    Documents and Websites
VIC:Flora and Fauna Guarantee Action Statement 221 - Limestone Blue Wattle Acacia caerulescens (Victorian Department of Sustainability and Environment (Vic. DSE), 2008) [State Action Plan].
State Listing Status
VIC: Listed as Threatened (Flora and Fauna Guarantee Act 1988 (Victoria): February 2014)
Non-statutory Listing Status
VIC: Listed as Vulnerable (Advisory List of Rare or Threatened Plants in Victoria: 2005)
Scientific name Acacia caerulescens [21883]
Family Fabaceae:Fabales:Magnoliopsida:Magnoliophyta:Plantae
Species author Maslin & Court
Infraspecies author  
Reference Muelleria 7: 131, fig. 1 (12 Apr. 1989).
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

The Limestone Blue Wattle forms a tree to 10-15 m high (Orchard & Wilson 2001).

Endemic to eastern Vic. The species is restricted to the Lakes Entrance-Buchan district, where is is known only from the Swan Reach-Tambo Upper region and Lake Tyers north to the Murrindal area (Entwisle et al. 1996; Orchard & Wilson 2001). It grows along the Buchan R. valley between Murrindal and Buchan, where many populations are presumed depleted through clearing for agriculture (N.G.Walsh 2001, pers. comm.).

One population is reserved within the Buchan Caves Reserve; other small stands persist along the roadside to the north of Buchan. It is also present in Lake Tyers Forest Park, where there is a 'significant population' (Maslin & Court 1989), and beside the road between Swan Reach and Bruthen. A small population was recorded in 1992 in State Forest (Tildesley Forest Block) (MEL undated).

In 2000, there were thought to be 1000-2000 plants in total (Victorian Workshop 2000, pers. comm.).

Acacia caerulescens was segregated from A. obliquinervia as a separate taxon in 1989 (Maslin & Court 1989). A. obliquinervia has less glaucous and often longer phyllodes (Entwisle et al. 1996).

It appears that the distribution of this species is strictly associated with limestone geology (Maslin & Court 1989). It occurs largely as remnant populations on clay over limestone in Eucalyptus woodland or forest (Entwisle et al. 1996).

Key associations of the Buchan populations include Eucalyptus melliodora, Acacia falciformis and Themeda triandra, forming a grassy woodlands (Maslin & Court 1989). By contrast, the Toorloo Arm population is associated with Eucalyptus baueriana and E. globulus subsp. pseudoglobulus, open forest with a shrubby understory dominated by Pomaderris oraria sensu lato (Maslin & Court 1989). Other associated species include Acacia falciformis and Dodonaea viscosa (MEL undated).

Flowers are borne Nov.-Dec. (Entwisle et al. 1996). Ripe seeds have been collected in Jan. (Maslin & Court 1989).

It is a long-lived species. Plants are obligate seed-regenerators. Typically germination will occur following fire or soil disturbance. Recruitment is probably dependent on fire or soil disturbance (N.G.Walsh 2001, pers. comm.).

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
Agriculture and Aquaculture:Agriculture and Aquaculture:Land clearing, habitat fragmentation and/or habitat degradation Limestone Blue Wattle Acacia caerulescens - National Recovery Plan (Carter, O. & N. Walsh, 2006c) [Recovery Plan].
Ecosystem/Community Stresses:Indirect Ecosystem Effects:Loss and/or fragmentation of habitat and/or subpopulations Limestone Blue Wattle Acacia caerulescens - National Recovery Plan (Carter, O. & N. Walsh, 2006c) [Recovery Plan].
Human Intrusions and Disturbance:Human Intrusions and Disturbance:Mechanical disturbance during construction, maintanance or recreational activities Limestone Blue Wattle Acacia caerulescens - National Recovery Plan (Carter, O. & N. Walsh, 2006c) [Recovery Plan].
Human Intrusions and Disturbance:Recreational Activities:Soil disturbance and/or trampling due to bushwalking Limestone Blue Wattle Acacia caerulescens - National Recovery Plan (Carter, O. & N. Walsh, 2006c) [Recovery Plan].
Invasive and Other Problematic Species and Genes:Invasive Non-Native/Alien Species:Competition and/or habitat degradation Oryctolagus cuniculus (Rabbit, European Rabbit) Limestone Blue Wattle Acacia caerulescens - National Recovery Plan (Carter, O. & N. Walsh, 2006c) [Recovery Plan].
Invasive and Other Problematic Species and Genes:Invasive Non-Native/Alien Species:Competition and/or habitat degradation Asparagus asparagoides (Bridal Creeper, Bridal Veil Creeper, Smilax, Florist's Smilax, Smilax Asparagus) Limestone Blue Wattle Acacia caerulescens - National Recovery Plan (Carter, O. & N. Walsh, 2006c) [Recovery Plan].
Invasive and Other Problematic Species and Genes:Invasive Non-Native/Alien Species:Competition and/or habitat degradation Rubus fruticosus aggregate (Blackberry, European Blackberry) Limestone Blue Wattle Acacia caerulescens - National Recovery Plan (Carter, O. & N. Walsh, 2006c) [Recovery Plan].
Invasive and Other Problematic Species and Genes:Invasive Non-Native/Alien Species:Competition and/or habitat degradation by weeds Limestone Blue Wattle Acacia caerulescens - National Recovery Plan (Carter, O. & N. Walsh, 2006c) [Recovery Plan].
Invasive and Other Problematic Species and Genes:Problematic Native Species:Competition, predation and/or habitat degradation by kangaroos and wallabies Limestone Blue Wattle Acacia caerulescens - National Recovery Plan (Carter, O. & N. Walsh, 2006c) [Recovery Plan].
Natural System Modifications:Fire and Fire Suppression:Inappropriate and/or changed fire regimes (frequency, timing, intensity) Limestone Blue Wattle Acacia caerulescens - National Recovery Plan (Carter, O. & N. Walsh, 2006c) [Recovery Plan].

Entwisle, T.J., B.R. Maslin, R.S. Cowan & A.B. Court (1996). Mimosaceae. In: Walsh, N.G. & T.J. Entwisle, eds. Flora of Victoria. 3:585-658. Inkata Press, Melbourne.

Maslin, B.R. & A.B. Court (1989). Acacia caerulescens, A new species of Acacia Section Phyllodineae from Victoria. Muelleria. 7(1):131-134.

MEL (undated). National Herbarium of Victoria Specimens. [Online]. Available from: http://www.rbg.vic.gov.au/research_and_conservation/herbarium.

Orchard, A.E. & A.J.G. Wilson (eds) (2001). Flora of Australia, Volume 11A, Mimosaceae, Acacia Part 1.

Victorian Workshop Participants (2000). Personal communication.

Walsh, N.G. (2001). Personal Communication.

EPBC Act email updates can be received via the Communities for Communities newsletter and the EPBC Act newsletter.

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 caerulescens in Species Profile and Threats Database, Department of the Environment, Canberra. Available from: http://www.environment.gov.au/sprat. Accessed Wed, 16 Apr 2014 14:38:31 +1000.