National recovery plan for Ginninderra Peppercress (Lepidium ginninderrense)
A Recovery Plan under the Environment Protection and Biodiversity Conservation Act 1999 (C’wlth), based on an Action Plan (Action Plan No. 25) prepared for the species under the Nature Conservation Act 1980 (ACT)
Conservation and Management Actions
The Department of Defence will continue to manage the Belconnen Naval Transmission Station site until it is fully decommissioned and is sold to the ACT Government. Some of the Conservation and Management Actions for Ginninderra Peppercress will only be applicable when the ACT Government manages the area.
As it is unlikely that the species exists anywhere else in the ACT, surveys beyond its immediate location are not economically justified. However, awareness of the species by field workers and others is important for potentially locating other sites.
- The Department of Defence will monitor the known population annually (this action will be the responsibility of Environment ACT Wildlife Research and Monitoring (WR&M) when the site is relinquished by Defence).
- Environment ACT (WR&M) will advise field workers, interested naturalists and conservation groups of the presence of the species to increase the potential that any other existing populations are identified.
- Environment ACT (WR&M) will liaise with the NSW Department of Environment and Conservation to encourage surveys of potential habitat outside the ACT.
Management of the Lepidium ginninderrense site will be directed to maintaining the existing conditions and ensuring that adjacent activities do not adversely affect the site. The management actions being undertaken are unlikely to have any adverse impact on other native species or ecological communities.
- Facilities, such as walking tracks will not be developed near the site, with the aim of discouraging visitor access to the area (ongoing).
- A 'low profile' will be maintained for the site where the species is located. The appropriateness of any signage and fencing will need careful consideration (ongoing).
- Statements of conservation objectives and intended management actions for the species will be placed in relevant management plans and strategies (ongoing).
- Expert advice on best practices for management of the species will be sought, particularly (a) maintenance of an open habitat, and (b) actions considered desirable based on the results of monitoring (as part of an 'adaptive management' approach). The experience of the Department of Defence in managing the population will be drawn upon in subsequent management by the ACT Government (ongoing).
- Existing plants of Lepidium ginninderrense support high seed set, allowing opportunities for translocation and ex-situ conservation (Young 2001). Environment ACT will undertake the following actions, which have been recommended by Young (2001):
- Collect open-pollinated seed from a wide range of individuals (already underway). (Year 1-3)
- Use some of the seed to establish new populations at other apparently suitable locations. (Year 1-3)
- Store remaining seed under appropriate conditions (e.g. at the Australian National Botanical Gardens) to act as a core for ex-situ genetic conservation. Seed will need to be replaced at intervals to be determined by seed longevity. (ongoing)
Any translocation and ex-situ conservation program should take into account the principles outlined by the Australian Network for Plant Conservation in Guidelines for the Translocation of Threatened Plants in Australia (ANPC 1997a) and Germplasm Conservation Guidelines for Australia (ANPC 1997b).