Three Springs Daviesia Daviesia bursarioides Interim Recovery Plan 2004-2009

Western Australian Threatened Species and Communities Unit (WATSCU)
© The Western Australian, Department of Conservation and Land Management, 2004

Foreword

Interim Recovery Plans (IRPs) are developed within the framework laid down in Department of Conservation and Land Management (CALM) Policy Statements Nos. 44 and 50.

IRPs outline the recovery actions that are required to urgently address those threatening processes most affecting the ongoing survival of threatened taxa or ecological communities, and begin the recovery process.

CALM is committed to ensuring that Critically Endangered taxa are conserved through the preparation and implementation of Recovery Plans or Interim Recovery Plans and by ensuring that conservation action commences as soon as possible and always within one year of endorsement of that rank by the Minister.

This Interim Recovery Plan will operate from June 2004 to May 2009 but will remain in force until withdrawn or replaced. It is intended that, if the taxon is still ranked Critically Endangered, this IRP will be reviewed after five years and the need for a full Recovery Plan assessed.

This IRP was given regional approval on 8 June, 2004 and was approved by the Director of Nature Conservation on 22 June, 2004. The allocation of staff time and provision of funds identified in this Interim Recovery Plan is dependent on budgetary and other constraints affecting CALM, as well as the need to address other priorities.

Information in this IRP was accurate in June 2004.

Summary

Scientific Name: Daviesia bursarioides Common Name: Three Springs Daviesia
Family: Papilionaceae Flowering Period: July - September
CALM Region: Midwest CALM District: Moora
Shire: Three Springs Recovery Team: Moora District Threatened Flora Recovery Team

Illustrations and/or further information: Brown, A., Thomson-Dans, C. and Marchant, N. (Eds) (1998) Western Australias Threatened Flora, Department of Conservation and Land Management, Western Australia; M.D. Crisp (1985) Conservation of the genus Daviesia, Australian National Botanic Gardens, Occasional Paper No. 6; M.D. Crisp (1995) Contributions towards a revision of Daviesia (Fabaceae: Mirbelieae) III: A synopsis of Daviesia, Australian Systematic Botany 8(6), 1178-79.

Current status: Daviesia bursarioides was declared as Rare Flora in September 1987, and is currently ranked as Critically Endangered (CR) under the Wildlife Conservation Act 1950. It currently meets Red List (IUCN 2000) Category CR under criteria B2ab(iii); C1+2a(i) due to the fragmented populations, low number of plants, and continuing decline in the quality of the habitat. D. bursarioides is also listed as Endangered under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act). The main threats are edge effects, degraded habitat, road, fence and firebreak maintenance, weed invasion, competition due to shading, inappropriate disturbance regimes and possibly disease.

Description: Daviesia bursarioides is a straggling, divaricately branching shrub to 2 m tall, with blue-green spine-tipped branches. The leaves are distinctive among Daviesias, being scattered and small, obovate in shape narrowing to the base, to 20x2.5 mm. The flowers appear between July and September, and are grouped in 3-8 flowered racemes in the axils of the leaves, on a long stem to 35 mm, giving the raceme an open appearance. They are small and typically pea-shaped. Each flower has an upper standard petal 7x9 mm, yellow in colour and maroon towards the base. The wing petals are 6x3 mm and deep pink, and the keel is 5x2 mm, and maroon in colour. The fruit is a triangular pod, 9x10 mm (Patrick and Brown 2001; Crisp 1995).

Habitat requirements: Daviesia bursarioides is endemic to the Three Springs area of Western Australia, and is known from approximately 120 plants in six populations over a range of about 15 km. Populations occur on Shire road reserve, Main Road reserve, private property and Nature Reserve. D. bursarioides is found in open shrub mallee habitat dominated by Eucalyptus gittinsii and Allocasuarina campestris, with a range of Acacia, Dryandra, Hakea and Grevillea species. Soils are shallow brown sandy loams with extensive lateritic gravel. Population 5 (the largest population) occurs on the periphery of a dense Allocasuarina campestris thicket on deep lateritic gravel. Species diversity at most sites is poor, and the nutrient levels in the soil are low.

Critical habitat: The critical habitat for Daviesia bursarioides comprises the area of occupancy of the known populations (wild and translocated); similar habitat within 200 metres of known populations; corridors of remnant vegetation that link populations and additional nearby occurrences of similar habitat that do not currently contain the species but may have done so in the past and may be suitable for translocations.

Habitat critical to the survival of the species, and important populations: Given that this species is listed as Critically Endangered, it is considered that all known habitat for wild and translocated populations is habitat critical to its survival, and that all wild and translocated populations are important populations.

Benefits to other species or ecological communities: There are no other known listed threatened species or ecological communities in the habitat of Daviesia bursarioides. However, recovery actions such as improving the security of tenure of D. bursarioides populations will also help protect the habitats in which the populations are 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 Australias responsibilities under that convention. The taxon is not listed under any specific international treaty, however, and therefore this IRP does not affect Australias obligations under any other international agreements.

Role and interests of indigenous people: Indigenous communities interested or involved in the regions affected by this plan have not yet been identified. The Aboriginal Sites Register maintained by the Department of Indigenous Affairs does not list any significant sites in the vicinity of the populations. However, not all significant sites are listed on the Register. Input and involvement will be sought from any indigenous groups that have a active interest in the areas that are habitat for Daviesia bursarioides, and this is discussed in the recovery actions.

Social and economic impact: The implementation of this recovery plan has the potential to have some limited social and economic impact, where populations are located on private property or road reserves. One population of D. bursarioides occurs on private land, in an area previously used as a source of gravel, and negotiations will continue with regard to the future management of this population. In addition, the Nature Reserve used for the translocation must be accessed through private property. Recovery actions refer to continued liaison between stakeholders with regard to these areas.

Evaluation of the plans performance: The Department of Conservation and Land Management will evaluate the performance of this IRP in conjunction with the Moora District Threatened Flora Recovery Team. 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.

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

  1. Relevant land managers have been made aware of the location and threatened status of the species.
  2. Declared Rare Flora (DRF) markers are in place for all roadside populations of the species. These alert road maintenance workers to the presence each population, and enable them to take appropriate care.
  3. Population 5 on private property has been fenced to exclude stock.
  4. Approximately 3000 seeds collected from Populations 1, 2, 3, 5 and 6 are stored at CALMs Threatened Flora Seed Centre.
  5. The Botanic Garden and Parks Authority currently hold 13.93g seed from six clones, and 8 plants in the nursery in fairly poor health.
  6. A translocation was implemented with approximately 600 juveniles planted out over the years 1998, 1999 and 2000. Approximately 60 plants are still surviving.
  7. An information sheet that describes and illustrates the species has been printed and distributed.
  8. Staff from CALMs Moora District regularly monitor populations of the species.
  9. The Moora District Threatened Flora Recovery Team (MDTFRT) will oversee the implementation of this IRP and will include information on progress in an annual report to CALM's Corporate Executive and funding bodies.

IRP objective: The objective of this Interim Recovery Plan is to abate identified threats and maintain or enhance viable 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 over the period of the plans adoption under the EPBC Act.

Criteria for failure: The number of individuals within populations and/or the number of populations have decreased by ten percent or more over the period of the plans adoption under the EPBC Act.

Recovery actions:

  1. Coordinate recovery actions
  2. Map critical habitat
  3. Liaise with land managers
  4. Seek long-term protection of habitat
  5. Reduce shading by associated vegetation
  6. Implement disturbance regime
  7. Implement weed control as required
  8. Collect seed
  9. Monitor populations
  10. Conduct further surveys
  11. Develop and implement a fire management strategy
  12. Undertake and monitor translocation
  13. Promote awareness
  14. Obtain biological and ecological information
  15. Review the need for a full Recovery Plan