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 Critically Endangered
Listing and Conservation Advices Commonwealth Listing Advice on Hibbertia tenuis (Threatened Species Scientific Committee (TSSC), 2010ad) [Listing Advice].
 
Commonwealth Conservation Advice on Hibbertia tenuis (Threatened Species Scientific Committee (TSSC), 2010ap) [Conservation Advice].
 
Recovery Plan Decision Recovery Plan not required, the approved conservation advice for the species provides sufficient direction to implement priority actions and mitigate against key threats (13/07/2010).
 
Adopted/Made Recovery Plans
Federal Register of
    Legislative Instruments
Amendment to the list of threatened species under section 178 of the Environment Protection and Biodiversity Conservation Act 1999 (98) (13/07/2010) (Commonwealth of Australia, 2010h) [Legislative Instrument].
 
State Listing Status
SA: Listed as Endangered (National Parks and Wildlife Act 1972 (South Australia): June 2011 list)
Scientific name Hibbertia tenuis [76189]
Family Dilleniaceae:Dilleniales:Magnoliopsida:Magnoliophyta:Plantae
Species author Toelken
Infraspecies author  
Reference J. Adelaide Bot. Gard. 16: 70 (1995).
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

Scientific name: Hibbertia tenuis

Conventionally accepted as Hibbertia tenuis (State Herbarium of South Australia 2007a).

Hibbertia tenuis is a delicate procumbent to scrambling shrub with branches to approximately 50 cm long (Toelken 1995a). Leaves are 4–7 mm long (Toelken 1995a). The branches, leaves and floral parts are covered with small, fine star-shaped hairs (Toelken 1995a). The species flowers all year around and has bright yellow flowers 5–9 mm long on slender stalks 4–18 mm long, which droop after flowering (Toelken 1995a). The stamens are arranged in a cluster of 4–6 around the two carpels (Toelken 1995a).

Hibbertia tenuis is endemic to the southern area of the Mount Lofty Ranges, South Australia. The species is known from a single location, on private property near Yundi, approximately 45 km south of Adelaide (SA DEH 2009m; State Herbarium of South Australia 2009).

In 2009, the extent of occurrence of Hibbertia tenuis was estimated to be 0.05 km2 based on the extent of suitable habitat surrounding the Yundi population (State Herbarium of South Australia 2009).

Based on data from 2007, the area of occupancy of Hibbertia tenuis was estimated to be 0.01 km2, based on the area occupied by surviving plants in the Yundi population (State Herbarium of South Australia 2009).

Hibbertia tenuis was described as 'common' or as having 'many plants' at Yundi Swamp from surveys in 1980, 1985 and 1993. A 2007 survey identified only 10–20 mature plants (State Herbarium of South Australia 2009).

Only one population of Hibbertia tenuis is known. Two subpopulations at Mount Compass and Tooperang, approximately 4.5 km and 9 km respectively from the Yundi population, are presumed extinct (State Herbarium of South Australia 2009).

Hibbertia tenuis grows in and around wet peat bog swamps on the Fleurieu Peninsula of South Australia (State Herbarium of South Australia 2009).

The distribution of this species overlaps with the Swamps of the Fleurieu Peninsula ecological community, which is listed as Critically Endangered under the EPBC Act.

The generation length of Hibbertia tenuis is unknown, though mature plants are estimated to be 10–20 years old (SA DEH 2009m).

Threat risk levels for Hibbertia tenuis include:

Threat class Risk level Notes 
Grazing and disturbance by stock (Willson & Bignall 2009) Low Resumption of grazing at Yundi is a threat (Bates pers. comm. 2009 cited in TSSC 2010) 
Climate change, drought and severe weather (Willson & Bignall 2009) Medium  
Incompatible site management (Willson & Bignall 2009) Medium The site is not formally protected, so land clearance could occur (Bates pers. comm. 2009 cited in TSSC 2010)
Water management and use (Willson & Bignall 2009) Medium Changes in water usage, such as drainage, can affect Fleurieu Peninsula, including swamps in the Mount Compass area (MLRSEFPSRT 2007)
Weed invasion (Bates pers. comm. 2009 cited in TSSC 2010) Unknown Potential threat
Dieback caused by Phytophthora cinnamomi (Phytophthora Technical Group 2003) Unknown Potential threat

Minister's reasons for recovery plan decision

There should not be a recovery plan for Hibbertia tenuis as the approved conservation advice for the species provides sufficient direction to implement priority actions and mitigate against key threats.

Regional Recovery Plan for Adelaide and the Mount Lofty Ranges

The Regional Recovery Plan for Threatened Species and Ecological Communities of Adelaide and the Mount Lofty Ranges, South Australia (Willson & Bignall 2009) includes Hibbertia tenuis. This plan addresses threat management in the context of broad vegetation groups (Willson & Bignall 2009). The plan generally addresses key threats to a range of endangered species in the region, such as: water managment and use, weed invasion and grazing (Willson & Bignall 2009). There are no specific measures to address threats to Hibbertia tenuis, but, as it occurs in the high priority Wetland vegetation group, actions to recover this area should benefit the shrub (Willson & Bignall 2009).

Conservation Advice for Hibbertia tenuis

Refer to the Commonwealth Conservation Advice (TSSC 2010ap) for information on research priorities and recovery priority actions to mitigate threats including habitat loss, disturbance and modification, weeds, trampling and disease. Raising awareness of the species and enabling recovery of additional populations are also encouraged in the Advice.

Management documents for Hibbertia tenuis include:

  • Regional Recovery Plan for Threatened Species and Ecological Communities of Adelaide and the Mount Lofty Ranges, South Australia (Willson & Bignall 2009).
  • Commonwealth Conservation Advice on Hibbertia tenuis (TSSC 2010ap).

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:Livestock Farming and Grazing:Grazing pressures and associated habitat changes Commonwealth Listing Advice on Hibbertia tenuis (Threatened Species Scientific Committee (TSSC), 2010ad) [Listing Advice].
Regional Recovery Plan for Threatened Species & Ecological Communities of Adelaide and Mount Lofty Ranges 2009-2014 (Willson, A. & J. Bignall, 2009a) [State Recovery Plan].
Climate Change and Severe Weather:Climate Change and Severe Weather:Climate change altering atmosphere/hydrosphere temperatures, rainfall patterns and/or frequency of severe weather events Regional Recovery Plan for Threatened Species & Ecological Communities of Adelaide and Mount Lofty Ranges 2009-2014 (Willson, A. & J. Bignall, 2009a) [State Recovery Plan].
Climate Change and Severe Weather:Habitat Shifting and Alteration:Habitat loss, modification and/or degradation Commonwealth Listing Advice on Hibbertia tenuis (Threatened Species Scientific Committee (TSSC), 2010ad) [Listing Advice].
Invasive and Other Problematic Species and Genes:Invasive Non-Native/Alien Species:Competition and/or habitat degradation by weeds Commonwealth Listing Advice on Hibbertia tenuis (Threatened Species Scientific Committee (TSSC), 2010ad) [Listing Advice].
Invasive and Other Problematic Species and Genes:Invasive Non-Native/Alien Species:Vegetation and habitat loss caused by dieback Phytophthora cinnamomi Commonwealth Listing Advice on Hibbertia tenuis (Threatened Species Scientific Committee (TSSC), 2010ad) [Listing Advice].
Natural System Modifications:Dams and Water Management/Use:Alteration of hydrological regimes and water quality Commonwealth Listing Advice on Hibbertia tenuis (Threatened Species Scientific Committee (TSSC), 2010ad) [Listing Advice].
Regional Recovery Plan for Threatened Species & Ecological Communities of Adelaide and Mount Lofty Ranges 2009-2014 (Willson, A. & J. Bignall, 2009a) [State Recovery Plan].

Mount Lofty Ranges Southern Emu-wren and Fleurieu Peninsula Swamps Recovery Team (MLRSEWFPSRT) (2007). Protecting Fleurieu Peninsula Swamps and the Mount Lofty Ranges Southern Emu-wren: a guide for landowners, land advisors, property planners and developers. [Online]. Adelaide: Conservation Council of South Australia. Available from: http://www.ccsa.asn.au/files/emuwren/Protecting%20FPS%20MLRSEW%20booklet%20100307.pdf.

Phytophthora Technical Group (2003). Phytophthora Management Guidelines. [Online]. Adelaide: Government of South Australia. Available from: http://live.greeningaustralia.org.au/nativevegetation/pages/pdf/Authors%20P/1_Phyphtothera.pdf.

South Australian Department for Environment and Heritage (SA DEH) (2009m). Species information sheet for Hibbertia tenuis. Unpublished information provided to the Department of the Environment, Water, Heritage and the Arts. South Australian Department for Environment and Heritage.

State Herbarium of South Australia (2007a). Census of South Australian vascular plants, algae and fungi. [Online]. Available from: http://www.flora.sa.gov.au/census.html.

State Herbarium of South Australia (2009). Adelaide Herbarium Database. Unpublished data, provided to the Commonwealth Department of the Environment, Water, Heritage and the Arts, March 2009.

Threatened Species Scientific Committee (TSSC) (2010ad). Commonwealth Listing Advice on Hibbertia tenuis. [Online]. Department of the Environment, Water, Heritage and the Arts. Canberra, ACT: Department of the Environment, Water, Heritage and the Arts. Available from: http://www.environment.gov.au/biodiversity/threatened/species/pubs/76189-listing-advice.pdf.

Threatened Species Scientific Committee (TSSC) (2010ap). Commonwealth Conservation Advice on Hibbertia tenuis. [Online]. Department of the Environment, Water, Heritage and the Arts. Canberra, ACT: Department of the Environment, Water, Heritage and the Arts. Available from: http://www.environment.gov.au/biodiversity/threatened/species/pubs/76189-conservation-advice.pdf.

Toelken, H.R. (1995a). Notes on Hibbertia. New taxa from south-eastern Australia. Journal of the Adelaide Botanic Gardens. 16:70.

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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). Hibbertia tenuis in Species Profile and Threats Database, Department of the Environment, Canberra. Available from: http://www.environment.gov.au/sprat. Accessed Wed, 23 Jul 2014 22:47:11 +1000.