National recovery plan for Twenty-five threatened orchid taxa of Victoria, South Australia and New South Wales 2003 - 2007

Coates, F., Jeanes, J. and Pritchard, A.
Department of Sustainability and Environment, Melbourne, 2002

Appendix 3

Prasophyllum sp. (Shelley)

Conservation status:
EPBC Act 1999: Not listed
IUCN (2000): CR
NRE (2000): E
Distribution:
Endemic to Victoria - Victorian Northern Inland Slopes Bioregion (Burrowa-Pine Mountain area west of Corryong).
Specific details of population localities are held on DSE internal files.
Present range
Abundance:
Fewer than 15 plants known from a single population. Former abundance is unknown, but likely to have been naturally rare with an extremely small population size.
Habitat:
Winter-wet open riparian grassland within shrubby Eucalyptus dives - E. viminalis forest. Associated understorey species include Acacia melanoxylon, Daviesia latifolia, Derwentia derwentiana, Platylobium formosum, Pimelea linifolia subsp. linifolia. The ground layer typically includes Gonocarpus serpyllifolius, Glycine microphylla, Stellaria pungens, Poa sp., Centaurea erythraea and Hypochaeris radicata. Critical habitat has not been determined, but may require disturbed or open bare ground for recruitment.
Reservation status:
Reserved at Pheasant Creek FFR.
Management:
Parks Victoria, (Central Victoria Region: Tallangatta).
Current and potential threats and their risk:
Current threats Perceived risk
Weed invasion High - introduced grasses are abundant.
Grazing/pest animals Likely to be high - rabbits are common.
Inappropriate fire regimes Likely to be low - sites are long unburnt and plants are unlikely to rely on fire for regeneration.
Site disturbance High - site is close to the road and vulnerable to damage from heavy vehicles and roadside management.
Potential threats Perceived risk
Reservation status Inadequately reserved.
Illegal collection Low - no evidence of collection in the past.
Ecology/biology High - conditions for seed recruitment and maintenance of pollinator and fungal activity unknown; increased extinction risk due to small population size.
Recovery objectives:
Clarify taxonomy; maintain and/or increase existing population size; protect and manage habitat.

Recovery actions undertaken:

  • The site was visited during recovery plan preparation.

Issues specific to recovery:

  • There is doubt as to whether Victorian plants are P. canaliculatum sens. strict. or an undescribed species with affinities to P. canaliculatum. For the purposes of the recovery plan, the Victorian population is treated as a threatened short range endemic taxon, confined to the Pheasant Creek Flora and Fauna Reserve west of Corryong (D. Rouse, Centre for Plant Conservation Biology, Canberra).

Overall recovery strategy:

Taxonomy will be clarified and searches will be conducted at similar sites in north-east Victoria. Recovery actions will be revised if additional populations are discovered. Habitat will be managed at the known population to prevent accidental damage by vehicles and suppression of plants by over-abundant introduced grasses. Recovery will be jointly managed by DSE, and PV. Community involvement will be sought.

Consultation:

Parks Victoria (Central Victoria Region: Tallangatta); DSE NE (Wodonga); D. Rouse (Centre for Plant Conservation Biology, Canberra).

Action Pheasant Creek
1. Determine current conservation status  
1.1 Clarify taxonomy L
1.2 Acquire baseline population data M
Responsibility DSE-BNR, Centre for Plant Conservation Biology
2. Investigate population biology  
2.1 Describe life history M
2.2 Evaluate natural pollination levels and/or causes of pollinator limitation M
2.3 Determine the effects of artificial pollination on growth survival and reproduction N/A
2.4 Determine spatial distribution of mycorrhizal fungi N/A
2.5 Determine optimal conditions for growth of mycorrhizal fungi in-situ N/A
Responsibility DSE-BNR
3. Determine habitat requirements of key populations  
3.1 Identify key populations N/A
3.2 Conduct surveys H
3.3 Identify ecological correlates of populations H
3.4 Prepare habitat descriptions M
Responsibility DSE-BNR
4. Manage risks to populations  
4.1 Identify and implement strategies to control threats H
4.2 Identify disturbance regimes to promote regeneration and recruitment H
4.3 Protect key public land populations and habitat N/A
4.4 Protect key private land populations and habitat N/A
Responsibility PV (Tallangatta), DSE-BNR
5. Promote in-situ recruitment  
5.1 Prepare habitat for seedling recruitment N/A
5.2 Re-stock populations with seed N/A
Responsibility PV (Tallangatta), DSE-BNR
6. Measure population trends and responses against recovery actions  
6.1 Conduct annual censusing of populations M
6.2 Collate, analyse and report on census data M
6.3 Re-prioritise and adjust recovery actions and/or threat management H
Responsibility DSE-BNR
7. Increase populations ex-situ  
7.1 Hand pollinate plants N/A
7.2 Establish a threatened orchid seed bank and determine seed viability M
7.3 Establish a mycorrhizal fungi bank M
7.4 Establish and maintain cultivated populations M
7.5 Maintain a database of threatened orchid taxa in cultivation L
Responsibility PV (Tallangatta), RBG, DSE-BNR
8. Translocate cultivated plants  
8.1 Determine criteria for re-stocking/re-introduction Completed
8.2 Evaluate site suitability N/A
8.3 Determine long term cost-benefits and feasibility of translocating plants N/A
8.4 Prepare and implement translocation plans N/A
8.5 Maintain translocated populations N/A
Responsibility DSE-BNR
9. Implement an education and communication strategy  
9.1 Prepare technical educational material on in-situ recovery techniques L
9.2 Undertake community extension L
9.3 Conduct workshops and symposia on in-situ recovery techniques L
9.4 Encourage and support research by Higher Education Institutions and existing research partners N/A
Responsibility DSE-BNR
10. Consolidate recovery and extend networks  
10.1 Maintain the Threatened Orchid Recovery Team L
10.2 Establish and facilitate regional Recovery Teams L
10.3 Co-ordinate recovery and exchange knowledge with interstate agencies N/A
Responsibility DSE-BNR