252 populations of 48 target plant taxa (Appendix 3) and 848 incidentally recorded populations of 342 significant plant taxa were located and assessed in the course of this project. New populations were located, based on searches of areas considered potential habitat, for 34 of the target taxa (Table 3.2). This indicates that targeted surveys utilising expert knowledge of the habitat requirements of rare plants are a very effective method of increasing the knowledge base for these species. Significant results included the discovery of four plants, through targeted survey, of Rapanea sp. A, listed as extinct in NSW, and the incidental discovery of several populations of the sedge Eleocharis tetraquetra, also listed as extinct in NSW.
Conversely, 10 taxa were unable to be located at all during targeted surveys (Table 3.3). These taxa are characterised by morphological or life-history attributes that would tend to make targeted survey for them difficult. For instance Chiloglottis anaticeps, Diuris disposita and Diuris pedunculata are small terrestrial orchids which may not flower if climatic conditions have been unfavourable. Known localities for both species of Diuris were searched without success during this project, possibly due to the exceedingly dry conditions prior to and during early 1997 which prevented flowering. Diuris disposita has since been recorded from the abovementioned locality (Bill Chapman, pers. comm.).
Table 3.5: Target taxa not located during CRA targeted surveys
An outstanding number of populations of significant plant taxa were recorded incidentally during this project. Refer to Appendix 4 for a listing of all incidentally recorded taxa.
Populations of 26 species listed as Endangered under the NSW Threatened Species Conservation Act (TSC) were recorded, including new populations ofAcalypha eremorum, Corchorus cunninghamii, Calophanoides hygrophiloides, Dendrocnide moroides, Elaeocarpus williamsianus and Pomaderris queenslandica. All of these taxa are known in NSW from few localities, and occur in low numbers.
Populations of 35 species listed as Vulnerable under the NSW TSC Act were incidentally recorded during this project including new populations of Bertya sp. A, Endiandra hayesii, Fontainea australis, Syzygium hodgkinsoniae, and Syzygium moorei.
Several plants, considered by specialist experts to represent undescribed taxa, were recorded during this project including Eucalyptus sp. aff. cypellocarpa (Hillgrove), Leucopogon sp. aff. fraseri, Olearia sp. aff. erubescens, Plectranthus sp. 3 ‘Long Gully’, and Pterostylis aff. cycnocephala. References 1
Commonwealth of Australia. 1995. Australia's National Biodiversity Strategy. Australian Government Publishing Service. Canberra.
Cropper, S. 1993. Management of Threatened Plants. CSIRO. Melbourne.
Elith, J., Burgman, M. & Minchin, P. 1998. Improved Protection Strategies for Rare Plants. Consultancy report by the University of Melbourne to Environment Australia for project number FB-NP22.
DeVries, R.J. 1997d. Vascular Plant Taxa of Priority Conservation Concern within North-Eastern New South Wales. Report No. 4 of the Forest Biota Response to Disturbance Project in North-Eastern NSW.
Unpublished report prepared for Environment Australia. NSW National Parks and Wildlife Service, Northern Zone CRA Unit.
Hnatiuk, R.J.1990. Census of Australian Vascular Plants. In Australian Flora and Fauna Series, Vol 11. Australian Government Publishing Service, Canberra.
JANIS. 1995. Proposed Nationally Agreed Criteria for the Establishment of a Comprehensive, Adequate and Representative Reserve System for Forests in Australia. A report by the Joint ANZECC/MCFFA National Forest Policy Statement Implementation Sub-committee (JANIS).
Keith, D. 1990. Rare and biogeographically significant vascular plant species of the Eden region, south-eastern NSW: a listing for the 'fine-filter' approach. Proc. Linn. Soc. NSW11 (2):111-132.
Keith, D. 1997. The Distribution and Population Status of Rare Tasmanian Forest Epacrids. A report prepared for the Tasmania CRA.
Keith, D. & Ashby, E. 1992. Vascular Plants of Conservation Significance in the South East Forests of NSW. Occasional Paper 11, NSW National Parks and Wildlife Service.
McCauley, A. 1997. Data Acquisition for the Comprehensive Regional Assessment of North-eastern New South Wales. Unpublished draft report to the Resource and Conservation Assessment Council. Northern Zone Team, NSW National Parks and Wildlife Service.
NSW National Parks and Wildlife Service. (1994). Flora of north-east NSW forests. North East Forests Biodiversity Study Report No.4, unpublished report, NSW National Parks and Wildlife Service.
Resource and Conservation Assessment Council. 1996a. Regional Report of Upper North East New South Wales Volume 2. Physical Attributes. Report prepared for the New South Wales Government by the Resource and Conservation Assessment Council, Sydney.
Resource and Conservation Assessment Council. 1996b. Draft Interim Forestry Assessment Report. Draft report prepared for the New South Wales Government by the Resource and Conservation Assessment Council, Sydney.
Richards, P.G., DeVries, R.J. & Flint, C.T. 1998. Vascular Plants of Conservation Significance in North-Eastern New South Wales: Inventory and Assessment. Unpublished draft report, NSW National Parks and Wildlife Service, Northern Zone CRA Unit.
Sheringham, P. & Westaway, J. 1997. Significant Vascular Plants of Upper North East New South Wales. Revised edition. A Report by the NSW National Parks and Wildlife Service for the Natural Resources Audit Council. NSW NPWS, Sydney.
Pro-forma used to record target species populations
Appendix 1 (cont.): Pro-forma used to record target species populations