Interim Recovery Plan No
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INTERIM RECOVERY PLAN NO. 93 IRONSTONE PETROPHILE (PETROPHILE LATERICOLA MS) INTERIM RECOVERY PLAN 2001-2004 Robyn Phillimore, Meredith Soutar and Val English Photo Andrew Brown March 2001 Department of Conservation and Land Management Western Australian Threatened Species and Communities Unit (WATSCU) PO Box 51, Wanneroo, WA 6946 Interim Recovery Plan for Petrophile latericola ms 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 This Interim Recovery Plan will operate from March 2001 to February 2004 but will remain in force until withdrawn or replaced.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 replaced by a full Recovery Plan after three years. This IRP was approved by the Director of Nature Conservation on 26 June 2001. The 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 at March 2001. 2 Interim Recovery Plan for Petrophile latericola ms SUMMARY Scientific Name: Petrophile latericola ms Common Name: Ironstone petrophile Family: Proteaceae Flowering Period: October to November CALM Region: Central Forest CALM District: South West Capes Shire: Busselton Recovery Team: Central Forest Region Threatened Flora and Communities Recovery Team (CFRTFCRT) Illustrations and/or further information: Brown, A., Thomson-Dans, C. and Marchant, N. (Eds). (1998) Western Australia’s Threatened Flora. Department of Conservation and Land Management, Western Australia; Western Australian Herbarium (1998) FloraBase - Information on the Western Australian Flora. Department of Conservation and Land Management, Western Australia. http://www.calm.wa.gov.au/science/ Current status: Petrophile latericola ms was declared as Rare Flora in October 1996 and was ranked in September 1997 as Critically Endangered (CR). It currently meets World Conservation Union (IUCN) Red List Category ‘CR’ under criteria A2c and C1 (IUCN 2000) due to low numbers of plants and a continued decline in the area and quality of habitat. The main threats are road, rail and firebreak maintenance activities, disease, weeds, hydrological changes, inappropriate fire regimes, drainage channel maintenance, and competition. Critical habitat: The critical habitat for Petrophile latericola ms comprises the area of occupancy of the known populations; areas of tall and low heath in shallow red/brown sandy-clay soil over ironstone in winter wet flats, as well as areas of Ironstone with remnant vegetation within 200 metres of the known populations; the local catchment for the surface and groundwater that provides the wetland habitat of the species; corridors of remnant vegetation that link populations; additional occurrences of the ecological community ‘Shrubland Association on Southern Swan Coastal Plain Ironstone’ and tall and low heath in shallow red sandy-clay soil over ironstone in winter wet flats, that do not currently contain the species. Habitat requirements: Petrophile latericola ms is endemic to Western Australia and is apparently confined to the south- west of Busselton in the Whicher Range. It inhabits tall and low heath on shallow red/brown sandy-clay soil over ironstone in winter wet flats with swamp teatree (Pericalymma ellipticum) and fringed regelia (Regelia ciliata). Existing Recovery Actions: The following recovery actions have been or are currently being implemented: 1. Most relevant people have been made aware of the existence of this taxon and its locations. These notifications detailed the Declared Rare status of the taxon and the associated legal responsibilities. 2. There are continuing negotiations to alter the care, control and management of land on which Populations 1 and 3 occur from rail reserve to conservation reserve. 3. Declared Rare Flora (DRF) markers have been installed at Subpopulations 1b, 2b and 3. 4. Dashboard stickers and posters have been produced and distributed. These illustrate DRF markers, inform of their purpose and provide a contact telephone number to use if such a marker is encountered. 5. CALM’s South West Capes District have developed maps and informed flora pickers that the area in which Petrophile latericola ms occurs is not available for commercial wildflower picking. 6. Seed from Petrophile latericola ms is stored in CALM’s Threatened Flora Seed Centre (TFSC). 7. The BGPA currently have 100 Petrophile latericola ms plants cultivated from seed and cuttings. 8. Areas of the ironstone community that contain Petrophile latericola ms have been sprayed with phosphite to control the plant pathogen Phytophthora cinnamomi. 9. In 1999 bollards were installed across the access track to prevent vehicular access to Population 2a. 10. A small barrier has been placed adjacent to the vegetation at Subpopulation 3 to prevent accidental damage. 11. The known populations of Petrophile latericola ms were surveyed and boundaries mapped in 1999. 12. Three areas of the ‘Shrubland Association on Southern Swan Coastal Plain Ironstone’ have been purchased, and two of these are being used as translocation sites for ironstone taxa. 13. The Central Forest Region Threatened Flora and Communities Recovery Team (CFRTFCRT) is overseeing the implementation of this IRP and will include information on progress in its annual report to CALM’s Corporate Executive and funding bodies. 14. Staff from CALM’s South West Capes District Office regularly monitor the populations. 3 Interim Recovery Plan for Petrophile latericola ms 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. Criteria for failure: The number of individuals within populations and/or the number of populations have decreased. Recovery actions 1. Coordinate recovery actions. 10. Develop and implement a fire management strategy. 2. Apply phosphite. 11. Monitor populations. 3. Monitor the impact of phosphite application. 12. Collect seed. 4. Implement disease hygiene measures. 13. Notify and liaise with relevant land managers. 5. Develop and implement a drainage management 14. Alter care control and management of habitat of strategy. Population 2. 6. Install Declared Rare Flora markers. 15. Negotiate to acquire land that contains Populations 1 and 3. 7. Propagate plants for translocation. 16. Obtain biological and ecological information. 8. Undertake and monitor translocation. 17. Promote awareness. 9. Undertake weed control. 18. Write a full Recovery Plan. 4 Interim Recovery Plan for Petrophile latericola ms 1. BACKGROUND History A single specimen of Petrophile latericola ms was discovered by G Keighery1 in 1991 on a rail reserve (Population 1a) during a floristic survey of the southern Swan Coastal Plain (Gibson et al. 1994). Soon after this during the same survey, a further population consisting of 287 plants (Populations 2a and 2b) was located in nearby State Forest. CALM District staff have since located additional plants (Populations 1b and 3) in remnant vegetation that adjoins Population 1a. In 1992 the rail reserve populations (Populations 1 and 3) were burnt and it was not until 1997 that some plants were relocated in the populations by CALM District staff. A hot fire also burnt through part of Subpopulation 2a in 1992 and resulted in the death of some mature individuals. Some regeneration has since occurred. Currently the species is known from three populations consisting of around 200 plants. Description Petrophile latericola ms is an upright, single-stemmed, open shrub, from 0.4 m to 1.5 m high and about 0.40 m wide with few branches. The hard, linear leaves are 15 to 50 mm long, circular in cross-section, end in a rigid, sharp point, and are held erect and close to the stem. The species has small, rounded inflorescences at the ends of the branchlets, with numerous overlapping brown bracts at their base. The flowers are bright yellow, hairy, and are about 20 mm long. The pollen presenter is erect and yellow, 3 to 5 mm long and has a hairy brush near the tip. The fruiting heads are rounded and up to 20 mm long (Brown et al., 1998). Petrophile latericola ms differs from P. brevifolia in having longer, spreading leaves and having more flowers on inflorescences (Brown et al. 1998). Distribution and habitat Petrophile latericola ms is endemic to Western Australia and is apparently confined to the south-west of Busselton. It inhabits tall and low heath on shallow red/brown sandy-clay soil over ironstone in winter wet flats with swamp teatree (Pericalymma ellipticum) and fringed regelia (Regelia ciliata) (Brown et al. 1998). The populations of Petrophile latericola ms occur with a number of