Biodiversity publications archive

Refugia for biological diversity in arid and semi-arid Australia

Biodiversity Series, Paper No. 4
S.R. Morton, J. Short and R.D. Barker, with an Appendix by G.F. Griffin and G. Pearce
Biodiversity Unit
Department of the Environment, Sport and Territories, 1995

12. Refugia in the Northern Territory (continued)

12.8. Reference number NT8

Refuge area: Dulcie Ranges

Biogeographic region: Burt Plain

Type of refuge: Gorges/mountain ranges

Lat./Long. 22°35’S / 135°45’E

Quality of refuge: Highly significant (4)

Area (km²): <10,000

Chief refuge value

Gorges and associated rocky country providing refuge for rare and relict plants.

General description

Rugged and highly dissected ranges on Arapunya Station with steep gorges containing permanent and semi-permanent waterholes. The gorges provide habitat for a significant suite of plant species1.

ANZECC-listed species

None identified.

Regional endemics

The camaenid land-snails Semotrachia jinkana and S. huckittana occur only in the Dulcie Ranges, mostly in moister micro-environments2. These species belong to a group of taxa that appear to be endemic to rocky hills across inland Australia.

Relict species

Where water is permanent, rare and relict plants occur: Fimbristylis sieberana, Imperata cylindrica (otherwise only known from George Gill Range and Palm Valley), Juncus aridicola, J. continuus, Potamogeton tricarinatus, Samolus eremaeus, and Schoenus falcatus (otherwise only known from George Gill Range), Cucumis mel, Hannafordia bisselli, Helichrysum thomsonii, Phyllanthus aff. simplex, Poranthera triandra, Spartothamnella puberula, Veronia cinerea, Vittadinia hispidula and V. virgata1.

Other significant species

Three species of fish (Leipotherapon unicolor, Melanotaenia splendida, Ambassis agrammus agassizii) have been recorded1.

Key threats

None identified.

Land tenure

Pastoral lease.

Key references

1. Latz and Langford (1983)

2. Solem (1993)