Abba Bell (Darwinia sp. Williamson) Interim Recovery Plan 2003-2008

Interim Recovery Plan No. 139
Gillian Stack & Val English
Department of Conservation and Land Management, WA, 2003

4. Term of plan

This Interim Recovery Plan will operate from March 2003 to February 2008 but will remain in force until withdrawn or replaced. If the taxon is still ranked Critically Endangered after five years, the need to review this IRP or to replace it with a full Recovery Plan will be determined.

5. Acknowledgements

The following people have provided assistance and advice in the preparation of this Interim Recovery Plan:

Anne Cochrane    Manager, the Department's Threatened Flora Seed Centre
Colin Crane       Senior Technical Officer, the Department's Science Division
Leonie Monks    Research Scientist, the Department's Science Division
Amanda Shade    Horticulturalist, Botanic Garden and Parks Authority
Bryan Shearer    Principal Research Scientist, the Department's Science Division
Meredith Spencer    Conservation Officer, the Department's Blackwood District
Russell Smith    Ecologist, Phosphite Program, CALM Bunbury

Thanks also to the staff of the W.A. Herbarium for providing access to Herbarium databases and specimen information, and the Department's Wildlife Branch for assistance.

6. References

Brown, A., Thomson-Dans, C. and Marchant, N. (Eds). (1998) Western Australia's Threatened Flora. Department of Conservation and Land Management, Western Australia.

Department of Conservation and Land Management (1992) Policy Statement No. 44 Wildlife Management Programs. Perth, Western Australia.

Department of Conservation and Land Management (1994) Policy Statement No. 50 Setting Priorities for the Conservation of Western Australia's Threatened Flora and Fauna. Perth, Western Australia.

Department of Conservation and Land Management (1995) Policy Statement No. 29 Translocation of Threatened Flora and Fauna. Perth, Western Australia.

Department of Conservation and Land Management (1998) Western Australian Herbarium FloraBase - Information on the Western Australian Flora. Perth, Western Australia. http://www.calm.wa.gov.au/science/

English, V. (1999). Shrubland Association on Southern Swan Coastal Plain Ironstone (Busselton Area) Interim Recovery Plan (Southern Ironstone Association) 1999-2001. Department of Conservation and Land Management, Western Australia.

Gibson, N., Keighery, B., Keighery, G., Burbidge, A. and Lyons, M. (1994). A floristic survey of the Southern Swan Coastal Plain. Unpublished report for the Australian Heritage Commission prepared by the Department of Conservation and Land Management and the Conservation Council of Western Australia (Inc.).

Hirschberg, K. J. B. (1989). Busselton shallow-drilling groundwater investigations, Perth Basin. Professional Paper, Geological Survey of Western Australia. Report 25, pp 17-37.

Murray, D. (Ed.) (1997). Control of Phytophthora and Diplodina Canker in Western Australia. Final Report to the Threatened Species and Communities Unit, Biodiversity Group Environment Australia prepared by Department of Conservation and Land Management, Western Australia.

Stack, G. Evans, R. and English, V. (1999) Interim Recovery Plan number 34, 1999-2002 Darwinia sp. Williamson. Department of Conservation and Land Management, Perth.

Tille, P. J. and Lantzke, N. C. (1990). South West Capes - Margaret River - Augusta land capability study; methodology and results Volume 2 Appendices. Technical Report 109. Division of Resource Management. Western Australian Department of Agriculture, Perth.

Turnbull, J. and Doran, J. (1987). Seed Development and Germination in the Myrtaceae. pp 46-57 in P. L. Langkamp (ed.) Germination of Australian Native Plant Seed. Inkata Press, Melbourne.

World Conservation Union (2000) IUCN red list categories prepared by the IUCN Species Survival Commission, as approved by the 51st meeting of the IUCN Council. Gland, Switzerland.

7. Taxonomic description

Brown et al. (1998).

Darwinia sp. Williamson

This erect or spreading shrub, up to 70 cm tall and 40 cm wide, often uses other shrubs for support. Green linear leaves, three to five mm long, are triangular in cross section. They are crowded at the ends of branches, and bend backwards. The inflorescence is nodding or (in young plants) rarely erect. Red and green bracts are arranged in several rows, enclosing the flowers. The brown floral tube, three mm long, is ribbed, with small triangular calyx lobes. Petals are about one mm long. There is a long, red curved style, 10 to 16 mm long.

Addendum

Abba Bell (Darwinia sp Williamson) Interim Recovery Plan 2003-2008

In adopting this plan under the Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act), the Minister for the Environment and Heritage has approved the following modifications.

Critical Habitat
The plan identifies a broad area as critical habitat, including buffer zones of a set distance around known populations. The Threatened Species Scientific Committee does not necessarily believe that such an area qualifies as habitat critical to the survival of the species, as defined in the EPBC Act.

Recovery Criteria
For the purposes of reviewing this recovery plan under the EPBC Act, the Recovery Criteria are amended to read as follows:

Criteria for success: The number of individuals within populations and/or the number of populations have increased by 10% or more over the period of the plan's adoption under the EPBC Act.
Criteria for failure: The number of individuals within populations and/or the number of populations have decreased by 10% or more over the period of the plan's adoption under the EPBC Act.