|Scientific Name:||Acacia chrysotricha|
|Taxonomic Notes:||This species hybridizes with A. fimbriata.|
|Red List Category & Criteria:||Endangered B1ab(iii,v) ver 3.1|
Acacia chrysotricha is an tree endemic to New South Wales in Australia only know from two locations. Its native range has been reduced due to deforestation and infrastructure development. It is currently known mainly from within Jaaningga Nature Reserve (1,200 individuals) and two other smaller subpopulations one in the Gladstone State Forest (30 individuals). The extent of occurrence is estimated as 10 km² and the area of occupancy based on available collection and a 2x2 cell size if estimated at 25 km². The main threats to the species include inappropriate fire regimes, weed invasion and logging activities. A draft management plan has been developed and several high priority management actions are being implemented to conserve the populations of A. chrysotricha. However, it remains to be seen if these actions will have a positive effect on population numbers and the recovery of this species in longer term. It is therefore still listed as Endangered.
|Range Description:||Acacia chrysotricha is endemic to Australia only known from the Brierfield-Newry State Forest region in New South Wales (Orchard and Wilson 2001).|
Native:Australia (New South Wales)
|Estimated area of occupancy (AOO) - km2:||25|
|Number of Locations:||2|
|Lower elevation limit (metres):||150|
|Upper elevation limit (metres):||260|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||It was originally known from 6 locations around the Bellingen area. In 2000 it was reported to only from only 2 locations south of Bellingen. One of the sites in wet sclerophyll forest within the Jaaningga Nature Reserve (previously Newry State Forest and Newry Golden Wattle Forest Preserve) and the second site is within a Eucalyptus plantation within Gladstone State Forest. Only some 1200 plants were known in 2000 in the Jaaningga Nature Reserve whilst in the Gladstone State Forest the population only had some 30 plants (NSW Scientific Committee 2000). According to the Atlas of Living Australia this species also occurs in the Nambucca region in Bollanolla Nature Reserve, further south, but this locality could not be verified for this assessment and the same record maps in a different place according to the Australian Virtual Herbarium (http://biocache.ala.org.au/occurrences/202311437).|
|Current Population Trend:||Unknown|
|Habitat and Ecology:||An erect tree up to 15 m high that grows in tall open forest and rainforest as an undestorey, in steep narrow gullies, in quartzite soils. Newry Golden Wattle is relatively short-lived. The seeds which remain in the soil require heat from fire to induce germination (Department of Environment and Conservation 2005).|
|Use and Trade:||Acacia chrysotricha is an ornamental tree used in parks and large gardens.|
|Major Threat(s):||The species is threatened by weed encroachment, of which Lantana camara is the most problematic and can threaten recruitment of A. chrysotricha; inappropriate fire regimes and logging activities. Too-frequent fire may lead to a decline in the population, as gradual exhaustion of the soil-borne seed bank will result, with no replacement of adult plants over time (Department of Environment and Conservation 2005).|
|Conservation Actions:||This species is known to occur within the Jaaningga Nature Reserve and the Gladstone State Forest. The conservation of A. chrysotricha is one of the main reasons for the Jaaningga Nature Reserve and protection of known populations are a priority of management (Department of Environment and Conservation 2005). The park was created in 1999 and covers and area of 975 hectares, a draft management plan is now in place (NSW National Parks and Wildlife Service 2007). Some hand removal of Lantana and bush regeneration work occurred in and around Newry golden wattle sites; wild dogs have been seen on a number of occasions on Range Road adjacent to Jaaningga Nature Reserve, and some baiting for dogs was carried out in the western and southern parts of the Reserve in 2006; a separate fire management strategy for Jaaningga Nature Reserve has been prepared and implementation of such strategy is set as a high priority; monitoring of the populations of Newry golden wattle, including habitat condition and trends in population demographics are set as a medium priority and targeted surveys for predicted threatened species is high priority; encourage research the ecology of Newry golden wattle especially its fire ecology and population dynamics is set as a high priority. The species is listed as Endangered in New South Wales (Department of Environment and Conservation 2005) and it is listed as 2R in Briggs and Leigh (1995), a rare taxon with a geographic range less than 100 km2. However, it is not listed under the Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act). The seeds for this species have been collected as part of the Millennium Seed Bank project. Seeds are located at: Wakehurst Place, Royal Botanic Gardens Kew (UK) and Mount Annan Botanic Garden, New South Wales (Australia).|
Briggs, J.D. and Leigh, J.H. 1995. Rare or threatened Australian plants. Centre for Plant Biodiversity Research, Canberra.
Commonwealth of Australia. 1999. Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act). Available at: http://www.environment.gov.au/cgi-bin/sprat/public/publicthreatenedlist.pl?wanted=flora. (Accessed: 10 June 2010).
Department of Environment and Conservation (NSW). 2005. Newry Golden Wattle - species profile. Sydney Available at: http://www.threatenedspecies.environment.nsw.gov.au/tsprofile/profile.aspx?id=10008. (Accessed: 12-05-2011).
IUCN. 2012. IUCN Red List of Threatened Species (ver. 2012.2). Available at: http://www.iucnredlist.org. (Accessed: 17 October 2012).
Kodela, P.G. and Haden, G.J. 2002. Acacia. In: G.J. Harden (ed.), Flora of New South Wales. Revised Edition, University of New South Wales Press Ltd., Sydney.
NSW National Parks and Wildlife Service. 2007. Babadaga group of reserves. Draft plan of management. In: Department of Environment and Climate Change (NSW) (eds).
NSW Scientific Committee. 2000. Acacia chrysotricha (a tree) - Endangered species determination - final. In: DEC (NSW) (ed.). NSW Scientific Committee, Sydney.
Orchard, A.E. and Wilson, A.J.G. 2001. Mimosaceae, Acacia part 1. In: B.R. Maslin (ed.), Flora of Australia Volume 11A, ABRS, Canberra.
Tindale, M.D. 1966. New taxa of Acacia from eastern Australia. No. 1. Contributions from the New South Wales National Herbarium 4(1): 19-23.
|Citation:||Malcolm, P. 2012. Acacia chrysotricha. The IUCN Red List of Threatened Species 2012: e.T19891443A20125119. http://dx.doi.org/10.2305/IUCN.UK.2012.RLTS.T19891443A20125119.en . Downloaded on 13 October 2015.|
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