Threatened Species Unit, Western
The State of New South Wales, Department of Environment and Conservation, 2004
11 Species ability to recover
Caladenia arenaria has good prospects of persisting in the long term. There are five sites, spread over 150 km, two with substantial populations. This reduces the probability of a chance event eliminating the species entirely. Management actions required are relatively straightforward, such as control of vertebrate grazing and weed control . There are no impediments to recovery, provided the recovery actions are implemented.
The only studies of C. arenaria so far completed are surveys conducted in 1998, 1999 and 2000 (G. Robertson unpubl. data; Carr 2000, 2001). The survey in 1998 examined remnant vegetation close to the Narrandera and Urana sites. In 1999 around 40 person days survey were spent in the area between Ardlethan and the southern Riverina near Savernake (Carr 2000). In 2000 about 30 person days survey were undertaken (Carr 2001).
Ensure all populations persist, and that declines in population numbers attributable to threatening processes are reversed.
- Population demographic factors influencing recoverability are understood.
- The impact of threatening processes affecting populations is minimised.
- Long-term management strategies are developed for each C. arenaria population.
- The possibility of stochastic events eliminating a population are reduced .
- The distribution, numbers and structure of populations is known.
- The population dynamics are understood.
- The impact of weeds, grazing, hybridisation and collecting on the populations is minimised.
- The effects of hand pollination are understood.
- Joint Management Agreements (JMAs) and Voluntary Conservation Agreements (VCAs) are developed for each population
- The germination requirements and most appropriate conditions for long term storage of seed and mycorrhizae are understood, and germplasm stored.