                 
Recovery plan for nationally threatened plant species on Kangaroo Island South Australia
Department of Environment, Water and Natural Resources
Kangaroo Island Natural Resources Management Board
Australian Government
Title: Recovery plan for nationally threatened plant species on Kangaroo Island South Australia
© Department of Environment, Water & Natural Resources
This work is copyright. It may be reproduced for study, research or training purposes subject to an acknowledgement of the sources but no commercial usage or sale. Requests and enquiries concerning reproduction and rights should be addressed to:
Department of Environment, Water and Natural Resources
PO Box 1047
Adelaide SA 5001
Citation
Taylor, D.A. (2012). Recovery plan for nationally threatened plant species on Kangaroo Island South Australia. Department of Environment, Water and Natural Resources, Government of South Australia.
Cover Photos: The nationally threatened species Leionema equestre on the Hog Bay Road, eastern Kangaroo Island (Photo D. Taylor)
Acknowledgements
This Plan was developed with the guidance, support and input of the Kangaroo Island Threatened Plant Steering Committee and the Kangaroo Island Threatened Plant Recovery Team. Members included Kylie Moritz, Graeme Moss, Vicki-Jo Russell, Tim Reynolds, Yvonne Steed, Peter Copley, Annie Bond, Mary-Anne Healy, Bill Haddrill, Wendy Stubbs, Robyn Molsher, Tim Jury, Phil Pisanu, Doug Bickerton, Phil Ainsley and Angela Duffy.
Valuable advice regarding the ecology, identification and location of threatened plant populations was received from Ida and Garth Jackson, Bev and Dean Overton and Rick Davies.
The support of the Kangaroo Island staff of the Department of Environment, Water and Natural Resources was also greatly appreciated.
Funding for the preparation of this plan was provided by the Australian Government, Kangaroo Island Natural Resources Management Board and the Threatened Species Network (World Wide Fund for Nature).
Note: This recovery plan sets out the actions necessary to stop the decline of, and support the recovery of, the listed threatened species or ecological community. The Australian Government is committed to acting in accordance with the plan and to implementing the plan as it applies to Commonwealth areas.
The plan has been developed with the involvement and cooperation of a broad range of stakeholders, but individual stakeholders have not necessarily committed to undertaking specific actions. The attainment of objectives and provision of funds may be subject to budgetary and other constraints affecting the parties involved. Proposed actions may be subject to modification over the life of the plan due to changes in knowledge.
Introduction
This is the first Recovery Plan for nationally threatened plant species on Kangaroo Island produced in recognition of the need to develop a coordinated conservation strategy for fourteen plant species listed as threatened under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act). This Recovery Plan builds on a five year action plan produced in 2003 and has been developed in line with the requirements of the EPBC Act and guidelines.
Species covered by the recovery plan
This is a multi-plant species recovery plan covering the land mass of Kangaroo Island. Fifteen species are addressed in this recovery plan along with the habitat critical to their survival (Table 1). Fourteen of these species are listed as nationally threatened under the EPBC Act. At the time of the development of the action plan in 2003, Pultenaea insularis was considered to be a species endemic to Kangaroo Island, critically endangered and worthy of listing under the EPBC Act. P. insularis has since been reviewed by de Kok and West (2004) and identified as Pultenaea pedunculata, a species commonly found on mainland South Australia. Recent genetic work however suggests that P. insularis is genetically distinct from the mainland P. pedunculata and may be worthy of consideration as a separate species (Ottewell et al, 2009). Until the status of this species has been confirmed P. insularis will continue to be treated as a separate species of interest to the KI Nationally Threatened Plant Project. For that reason it is included in this recovery plan.
Distribution and Populations
Due to limited knowledge of distribution and abundance of the majority of the 15 threatened plant species on Kangaroo Island, all known populations and sub-populations of each plant species have been classified as important under this plan. No assessment of the importance of Kangaroo Island populations and sub-populations relative to the full Australia wide distribution of each species has been made.
A summary of the known populations and sub-populations of the 15 threatened plant species is presented in Table 2. Spatial representations of these populations are included in Appendix A.
Table 1: Plant species considered in this report and their EPBC Act status and habitat
Species
|
Common Name
|
EPBC Act 1999
|
Habit
|
Asterolasia phebalioides
|
Downy Starbush
|
Vulnerable
|
Small shrub to
1.5 m high
|
Beyeria subtecta*
|
Kangaroo Island Turpentine Bush
|
Vulnerable
|
Small rigid shrub to 0.6 m high
|
Caladenia ovata
|
Kangaroo Island Spider-orchid
|
Vulnerable
|
Ground orchid to 0.23 m high
|
Cheiranthera volubilis*
|
Twining Finger-flower
|
Vulnerable
|
Slender climbing twiner
|
Correa calycina var. halmaturorum*
|
De Mole River Correa
|
Vulnerable
|
Shrub
|
Euphrasia collina subsp.osbornii
|
Osborn’s Eyebright
|
Endangered
|
Small herb to 0.3 m high
|
Leionema equestre*+
|
Kangaroo Island Phebalium
|
Endangered
|
Small shrub to
0.3 m high
|
Logania insularis*
|
Kangaroo Island Logania
|
Vulnerable
|
Low growing shrub
|
Olearia microdisca*
|
Small-flowered Daisy-bush
|
Endangered
|
Narrow, woody shrub to 1.5 m high
|
Pomaderris halmaturina subsp.halmaturina
|
Kangaroo Island Pomaderris
|
Vulnerable
|
Tall shrub up to
4 m high
|
Ptilotus beckerianus
|
Ironstone Mulla Mulla
|
Vulnerable
|
Herb to 0.25 m high
|
Pultenaea insularis*-
|
Beyeria Bush-pea
|
Not currently listed
|
Low spreading shrub to 0.6 m high
|
Pultenaea villifera var. glabrescens*
|
Splendid Bush-pea
|
Vulnerable
|
Low spreading or tall shrub
|
Spyridium eriocephalum var. glabrisepalum*
|
MacGillivray Spyridium
|
Vulnerable
|
Low slender shrub to 1 m high
|
Thelymitra matthewsii
|
Spiral Sun-orchid
|
Vulnerable
|
Ground orchid to 0.2 m high
|
* Endemic to Kangaroo Island - Currently subject to taxonomic revision.
+ Synonym Phebalium equestre
Table 2: Populations of fifteen threatened plant species on Kangaroo Island
Species
|
Number of plants based on most recent and most complete counts
|
Number of records
|
Area of occupancy (km2)
|
Asterolasia phebalioides
|
>50000
|
3
|
4.0
|
Beyeria subtecta
|
11146
|
81
|
51.6
|
Caladenia ovata
|
Unknown
|
6
|
4.0
|
Cheiranthera volubilis
|
>8453
|
20
|
23.4
|
Correa calycina var. halmaturorum
|
Unknown
|
2
|
1.4
|
Euphrasia collina subsp.osbornii
|
617
|
4
|
4.7
|
Leionema equestre
|
2663
|
26
|
21.7
|
Logania insularis
|
Unknown
|
6
|
3.5
|
Olearia microdisca
|
2264
|
18
|
26.1
|
Pomaderris halmaturina subsp. halmaturina
|
1902
|
27
|
45.4
|
Ptilotus beckerianus
|
37252
|
21
|
28.4
|
Pultenaea insularis
|
831
|
15
|
11.6
|
Pultenaea villifera var. glabrescens
|
>629
|
20
|
19.6
|
Spyridium eriocephalum var. glabrisepalum
|
1536
|
48
|
45.6
|
Thelymitra matthewsii
|
Unknown
|
2
|
1.8
|
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