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



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Recovery plan for nationally threatened plant species on Kangaroo Island South Australia



9 midway l equestre sept 2004

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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