Wing-fruited Lasiopetalum (Lasiopetalum pterocarpum ms) Interim Recovery Plan 2003-2008

Interim recovery plan no. 134
Gillian Stack and Val English
Department of Conservation and Land Management, WA, 2003

Summary

Scientific Name: Lasiopetalum pterocarpum ms Common Name: Wing-fruited Lasiopetalum
Family: Sterculiaceae Flowering Period: September-November
Dept Region: Swan Dept District: Perth Hills
Shire: Serpentine-Jarrahdale Recovery Team: Swan Region Threatened Flora and Communities Recovery Team (SRTFCRT)

Illustrations and/or further information: A. Brown, C. Thomson-Dans and N. Marchant (Eds) (1998) Western Australia's Threatened Flora; A. Markey (1997) A Floristic Survey of the northern Darling Scarp.

Current status: Lasiopetalum pterocarpum ms was declared as Rare Flora under the Western Australian Wildlife Conservation Act 1950 and ranked as Critically Endangered in 1998. It currently meets World Conservation Union (IUCN 2000) Red List Category 'CR' under criteria Ba1b(iii)+2ab(iii); C2a(i,ii) and D as it is known from a single wild population of 17 plants, in an area of National Park subject to heavy visitation by recreational users. It is also listed as Endangered under the Commonwealth Environmental Protection and Biodiversity Conservation Act 1999 (EPBC Act). Established weed invasion, by blackberry (Rubus aff. selmeri), watsonia (Watsonia meriana) and gladioli (Gladiolus undulatus), is a major threat to this species, and in combination with the recreational use of the area continues to impact its habitat. Changes to stream flows or water quality in the stream that flows adjacent to the population and inappropriate fire regimes are additional threats. An additional 48 plants were translocated into a new site in June 2001, but it is not yet known if this population will be self-sustaining.

An Interim Recovery Plan was written for Lasiopetalum pterocarpum ms in 1999 (Stack and English 1999). This plan is based on that document, includes additional information compiled since 1999, and replaces that plan.

Critical habitat: The critical habitat for Lasiopetalum pterocarpum ms comprises the area of occupancy of the known populations; similar habitat within 200 metres of known populations; native vegetation that links populations; additional nearby occurrences of similar habitat that do not currently contain the species but may be suitable for further translocations; and the surface and groundwaters that maintain its riparian habitat.

Habitat critical to the survival of the species, and important populations
Given that this species is Critically Endangered it is considered that all known habitat is habitat critical. In addition all populations, including translocated populations, are considered important to the survival of the species.

Benefits to other species/ecological communities
Recovery actions, such as weed control, implemented to improve the security of Lasiopetalum pterocarpum ms are likely to improve the quality of the habitat in which this population is located.

International Obligations
This plan is fully consistent with the aims and recommendations of the Convention on Biological Diversity, ratified by Australia in June 1993, and will assist in implementing Australia's responsibilities under that Convention. However, as Lasiopetalum pterocarpum is not listed under any international agreement, the implementation of other international environmental responsibilities is not affected by this plan.

Role and interests of indigenous people
There are no known indigenous communities involved in the management of areas affected by this plan. Therefore no role has been identified for indigenous communities in the recovery of this species.

Social and economic impacts
Wild and translocated populations of Lasiopetalum pterocarpum ms are located on public lands. There are unlikely to be any major social or economic impacts associated with the implementation of actions held in this plan.

Evaluation of the Plan's Performance
The Department of Conservation and Land Management, in conjunction with the Recovery Team will evaluate the performance of this IRP. In addition to annual reporting on progress with listed actions and comparison against the criteria for success and failure, the plan is to be reviewed within five years of its implementation.

Habitat requirements: L. pterocarpum ms is currently known from a very narrow range in the Serpentine area. It occurs in a riparian community in a National Park, much of it very close to a major carpark and walkway (Brown et al. 1998).

Existing Recovery Actions: The following recovery actions have been or are currently being implemented -

  1. National Park Rangers are aware of the location and threatened status of the species.
  2. Surveys for new populations have been conducted.
  3. Weed control of blackberry, watsonia and gladioli is ongoing in the habitat of the wild population.
  4. The habitat of Population 1a has been fenced.
  5. Approximately 2700 seeds collected from Population 1 are stored in the Department's Threatened Flora Seed Centre.
  6. The Botanic Garden and Parks Authority currently have 13 plants of L. pterocarpum ms from three clones.
  7. A translocated population was established in 2001.
  8. Trials have established that this species has low susceptibility to Phytophthora cinnamomi.
  9. An information sheet that describes and illustrates the species has been produced.
  10. Staff from the Department's Perth Hills District regularly monitor both wild and translocated populations of this species.
  11. The Swan Region Threatened Flora and Communities Recovery Team is overseeing the implementation of this IRP and will include information on progress in an annual report to the Department's Corporate Executive and funding bodies.

IRP Objective: The objective of this Interim Recovery Plan is to abate identified threats and maintain or enhance in situ populations to ensure the long-term preservation of the species in the wild.

Recovery criteria
Criteria for success: The number of individuals within populations and/or the number of populations have increased by ten percent or more.
Criteria for failure: The number of individuals within populations and/or the number of populations have decreased by ten percent or more.

1. Coordinate recovery actions 8. Collect seed and cutting material
2. Continue weed control 9. Conduct further surveys
3. Restrict access, rehabilitate unauthorised tracks 10. Continue to implement Translocation Proposal
4. Ensure appropriate stream flow and water quality 11. Obtain biological and ecological information
5. Develop and implement a fire management strategy 12. Promote awareness
6. Map critical habitat 13. Incorporate recovery actions in Management Plan for National Park
7. Monitor the populations 14. Review the need for further recovery actions and/or a full Recovery Plan